List of cross-generational references

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The nine generations of Pokémon games, taking place in the same , have had multiple references to each other. Not only do the games reference their same-generation counterparts (with the 's default name being the version played and the rival's being the counterpart version in the first two generations), but games released later in the series typically will feature references to events of past generations.
This does not include Pokémon. While Pokémon released in previous generations will always appear, they are not a reference to the generation itself.
==List of references==
===Generation II===
====References to Generation I====
* Not only is the Kanto region a playable area during the games, but several of the events of Generation I are spoken of as having happened three years prior. Many characters also reappear because of this, though some of them undergo design changes.
* , the player character of the first games, is found training in Mt. Silver and can be battled.
* , the rival character of the first games, has become the Gym Leader of Viridian City. His team is based on the Pokémon he used in the final battle in .
* A man in the Violet City Pokémon Center states that the former Team Rocket was broken up by a "."
* The parents of the in Saffron City mention that her Clefairy Doll was given to her by three years before.
* The Berserk Gene, a held item, is found near the former entrance of the now-collapsed Cerulean Cave, where once hid.
* There is a Pokémon doll of a Surfing Pikachu available to decorate the room, which references the Pikachu's Beach minigame in .
* A man in Cerulean City says there used to be a cave near the city with powerful Pokémon.
* If the player checks the poster in the Celadon Game Corner, the player will be informed that there's nothing there, referring to the secret switch under the poster in Generation I.
* The master of the Saffron City Fighting Dojo, Kiyo, can be found and battled in Mt. Mortar. Like Koichi in Generation I, he gives the player upon defeating him.
* In a Celadon City restaurant, a woman says that no one will give the player a Coin Case here and that they should look in Johto. A man in the same place gives a Coin Case in Generation I.
===Generation III===
====References to Generation I====
* Brawly is said to have once trained alongside Bruno, who is a member of Kanto's Elite Four. Also, both of them are Pokémon users.
* The Oceanic Museum in Slateport City has two water samples on the top floor, one of which is from Kanto (though this reference is removed in Emerald). Its background music theme is also an arrangement of the S.S. Anne theme.
** There is also a miniature scale model of the S.S. Anne on the top floor of the Oceanic Museum.
* In Lanette's house, there is a computer displaying e-mails from Bill about the Pokémon Storage System.
* On Faraway Island, a series of smudged messages, which may have been left by Mr. Fuji, appear on a signpost.
* A boy in Lilycove City says that he and his family came from the Kanto region before he asks if there are any Pokémon found only in this area.
* In the in Kanto, there is a small crater where used to be.
====References to Generation II====
* In , the player character is said to have moved at the beginning of the game with their family from the Johto region, the main setting of the Generation II games. In , the character who said this instead states that the player character's family moved there from a faraway place.
* The internal data of Pokémon Ruby and Sapphire contains remastered versions of the themes played on Routes 38 and 39, Goldenrod's Radio Tower Takeover, Legendary beasts' battle, and Saffron City.
* The Oceanic Museum in Slateport City has two water samples, one of which is from Johto (though this reference is removed in Emerald).
* A man in Mt. Moon says that Brock sometimes helps excavate Fossils there. This explains how he acquires the and which he uses in Generation II.
* At the Cerulean Cape, a dame says Misty has high hopes about the location, which is known as a famous dating spot. In the Generation II games, she is first encountered there with an unknown male character.
* Janine, Koga's daughter and future Leader of Fuchsia Gym, appears in Fuchsia City, and tells the player that she is training to use Pokémon like her father. She is misnamed as Charine in the English translation of Pokémon FireRed and LeafGreen, however.
* The branch of Team Rocket in the Sevii Islands seems to be the same branch which attempted to revive Team Rocket during Generation II, with plans to use magnetic waves to evolve Pokémon. Gideon also claims that Giovanni's child has red hair, a reference to .
* One of Professor Oak's assistants will state that he is to get a radio show sometime in the near future.
* Celio mentions that some members of Bill's family live in Goldenrod City.
* A woman on Two Island in Bruno's section of the Fame Checker mentions the RageCandyBar.
* A child in Indigo Plateau in Lance's section of the Fame Checker says he has a cousin who is a Gym Leader somewhere far away.
* Whitney, Jasmine and Pryce lookalikes appear as audience members in Pokémon Contests.
* The man who digs Three Isle Path and gives the player a Nugget says that he'd like to buy a house in Kanto. He may be the same person who gives away a Nugget in Generation II in his house on .
* The themes used on the Sevii Islands are remastered versions of the routes around Mahogany Town as well as remastered versions of /Olivine City and Azalea Town/Blackthorn City.
===Generation IV===
====References to Generation I====
* Professor Rowan is said to have developed the Sinnoh Pokédex with help from a Pokémon Professor from Kanto.
* Professor Oak himself comes to Sinnoh to give the the National Pokédex, and can always be found in a house in Eterna City thereafter. He gives the player an Up-Grade, which was sent to Oak by his acquaintance from Kanto.
* In the gate east of Canalave City is a guard who complains that he is thirsty, like the guards in Kanto who will allow the player to enter Saffron City if they are brought a drink. Unlike those guards, however, this one does not do anything if brought a drink.
* One of the Elite Four, Bertha, shares a similar name (in Japanese and English) and design to Agatha. It is possible they are related, or that Bertha was at least modeled after Agatha.
* Eddie from mentions that he trained at the Fighting Dojo in Saffron City.
* In Amity Square, some Pokémon may be let out of their Poké Balls to follow their around. One of the few available is , which did the same (however, throughout the game) in .
* Bebe's friend Bill is mentioned to have developed the basic storage system.
* Part of the Veilstone Game Corner music theme is a techno remix of the Rocket Game Corner music theme.
* One of 's alternate names was Ash in the English versions of . This is one of the default names of in the games . It may even be a reference to the 's first main character.
* As a direct tribute to the original games, one of the wallpapers has been designed to resemble the design of the routes of the first games, complete with the graphics and sprites when the games are played on the Game Boy. The wallpaper showcases typical features like both types of fences, low and high grass, normal ground, a signpost and a house.
* When visiting the Villa, Roark wonders if he could make the Underground extend to Kanto and Johto.
* As are remakes of , the references present in the original games to Generation I return.
* During a special event, the player will travel back in time to shortly after Red has defeated Giovanni. Giovanni tells his that he has decided to disband Team Rocket. Afterwards, he will run towards the Johto region and is found in a cave at Tohjo Falls. When the player defeats him, he will make a remark that the player reminds him of the team in the first place.
* In , a man mentions that Professor Oak once said there were 150 Pokémon, the amount known during Generation I, although there are now over 400.
====References to Generation II====
* A news report of a red Gyarados begins . The cameraman who filmed the documentary appears at the Survival Area.
** In , the game instead begins with a report about Professor Rowan. However, the cameraman from the red Gyarados report is seen blocking the entrance to Lake Valor, hoping to get a shot of the said to live there.
* A man who gives the a in Hearthome City says that Professor Elm announced that Eggs kept with a Trainer will eventually hatch.
* Jasmine, one of Johto's Gym Leaders, appears to give the player and participates in Sinnoh's Pokémon Super Contests.
* A man in Valor Lakefront states that he would like to see a that resides in the Whirl Islands, a that resides in the Tin Tower, and dancing in Mt. Moon sometime during his life.
* A on near Celestic Town says he wants to train with a ninja Gym Leader in a faraway land.
* Hayden on mentions that he left the Dragon's Den several years ago.
* The Poké Ball design on the floor of the Sinnoh Pokémon Centers is colored . Park Balls are also colored gold and silver, and the normally black stripe in the middle is actually a light blue, -like color.
* Geoffrey on mentions a Dragon Tamer Champion.
* The which Bebe gives to the player was obtained originally from her friend in Johto.
* Cynthia gives the SecretPotion, the medicine from Cianwood City that cured Amphy in Generation II, to the player to cure the group of blocking .
* When visiting the Villa, Roark wonders if he could make the Underground extend to Kanto and Johto.
* In Stargazer Colosseum in Pokémon Battle Revolution, some of the Pokémon in the last battle depend on which game is linked to the Wii. If is linked, one of the Pokémon is , Gold's game mascot, and if is linked, one of the Pokémon is , Silver's game mascot.
* When a appears during a slot game in Veilstone Game Corner, a remixed version of Mt. Moon Square music theme from Pokémon is played.
* In , one of the women in the basement floor of the Veilstone Department Store mentions that the store is sold out of RageCandyBars, the local specialty in Mahogany Town.
* In , the Gym guide of Vermilion Gym states that the Gym's traps were temporarily out of order, a reference to Pokémon Gold, Silver, and Crystal.
* In the Pokégear's description of Cerulean Cave, it states that the cave had collapsed before it was reconstructed, referencing how the cave was sealed off in the original Johto games.
* A in the Pokémon Center states that the Pokémon Center didn't exist when he was climbing the mountain, which is only true in Generation II.
* In , the man at Indigo Plateau mentions that nobody uses his to home anymore (which it used to do in Generation II) since they usually to and from instead.
====References to Generation III====
* A man in Hearthome City, who says he is from the Hoenn region, will show the player to the Contest Hall, a feature originally introduced in Hoenn.
* A man in Valor Lakefront states that he would like to see a rocket launch from the Space Center in Mossdeep City sometime during his life.
* If the player helps a woman at the Hotel Grand Lake find her lost Suite Key, in , she will reward them with a Lava Cookie, a specialty of Hoenn. In , the reward was changed to a White Flute, which are likewise also made in Hoenn.
* A south of the Valor Lakefront says she would like to vacation in Hoenn because it has more routes on which to .
* A woman west of Pastoria City used to work at the Weather Institute of Hoenn and will give out weather-changing TMs for Shards.
* An old woman living at the base of Stark Mountain acts in the same way that another woman does on in Hoenn, insisting that the player keep healing their Pokémon with her. They both also live just north of a sandstorm-ridden desert.
* A north of Sunyshore City wishes to visit Hoenn's seas.
* A in the Seven Stars Restaurant will occasionally mention the sauce of her dish was made from spicy Cheri Berries with a Hoenn-style recipe.
* Audrey on says she was born in Hoenn.
* A woman in the claims to have been from Hoenn, where another resides. In , her reference could mean either the Battle Tower itself or the that is present in Hoenn.
* A catalog in Rad Rickshaw's Cycle Shop in Eterna City advertises the Acro Bike and Mach Bike.
* In Stargazer Colosseum in , some of the Pokémon in the last battle depend on which game is linked to the Wii. If Diamond is linked, one of the Pokémon is , Sapphire's game mascot, and if Pearl is linked, one of the Pokémon is , Ruby's game mascot.
* The fourteen foreign Pokédex entries in are all from the respective translated versions of .
* In , the Adamant Orb and Lustrous Orb are required to summon and , much like the Red Orb and Blue Orb were required to summon Groudon and Kyogre.
* Primo, who can be found in the Violet City Pokémon Center, previously appeared as Poké Dude on 's Teachy TV.
* When the player first encounters Bill in the Ecruteak City Pokémon Center, he will mention that Lanette from Hoenn helped him develop the Pokémon Storage System.
* In , many buildings and lengths of most Routes and areas in Kanto are heavily based on Generation III Kanto rather than Generation II Kanto. Furthermore, many areas and other aspects not present in the Generation II Kanto have returned in order to resemble the Generation III Kanto more closely.
* Mr. Pokémon is said to have gotten the Red Orb or Blue Orb from a friend in Hoenn.
* , Hoenn's , is present in Vermilion City, and will speak of a strange Hoenn-native Pokémon that has been reported Kanto.
** He also appears in the Silph Co. building in Saffron City after the player defeats and gives the player one of the Hoenn first partner Pokémon.
* The Embedded Tower, which houses the super-ancient Pokémon, is said to have been built by people from Hoenn.
* When the player battles the Frontier Brains in , a remix of 's Frontier Brain theme can be heard.
===Generation V===
====References to Generation I====
* 's theme as Kanto is remixed in the final battles of official competitions.
* After a in Undella Bay is defeated, he claims he will challenge the Gym Leaders all over the world. He then asks where he can find Gyms, asking for confirmation that they're in Kanto, Hoenn, and Sinnoh.
* A in the Icirrus Gym says that he trained in a Fighting Dojo in Kanto.
* According to one of the Plasma Grunts in N's Castle, "Team Galactic and Team Rocket drew too much attention to themselves. That's why their plans were thwarted."
* An aboard the Royal Unova mentions that she is from the Kanto region.
* A female in Humilau City references Misty by her Gym Leader title, "Tomboyish Mermaid".
* A in Humilau City references a on Kanto Route 3 when she says "This dress is comfy and easy to wear..."
* Shauntal references Agatha in a quote from her novel during the player's post-National Pokédex challenge. She also references Bertha and notes the similarity in appearance between the two.
* Sabrina appears as a at Pokéstar Studios.
* The Gym Leaders of Kanto (excluding Koga) can be battled at the Pokémon World Tournament. also works as Kanto's representative in the Champions Tournament.
====References to Generation II====
* Shauntal mentions the Silver Wing and the Rainbow Wing in one of her conversations at Caitlin's Villa. These are the main items used to summon and , respectively.
* The lone who stole the Machine Part from the Kanto Power Plant is revealed to live in Unova. He says that while he had planned to revive Team Rocket, soon after returning home he fell in love and then married.
* The RageCandyBar returns. The wife of the ex-Team Rocket Grunt, as well as Professor Juniper, gives the RageCandyBar to the player. The wife mentions that the candy is the favorite sweet of one of her husband's past coworkers in Team Rocket.
* Team Rocket's Radio Tower takeover theme can be heard in the Game Freak headquarters in Castelia City.
* is said to have waited for for a long time.
* According to one of the s in N's Castle, "Team Galactic and Team Rocket drew too much attention to themselves. That's why their plans were thwarted."
* A aboard the Royal Unova mentions that he came from Johto for a business trip.
* A on Skyarrow Bridge describes the trucks rounding the bend with onomatopoeia, calling it the dialect of Goldenrod City.
* Janine and the Gym Leaders of Johto can be battled at the Pokémon World Tournament. Lance and also work as Johto's representatives in the Champions Tournament.
* Before being battled at the Pokémon World Tournament, Norman mentions how he used to live in Olivine City before moving to Petalburg City.
====References to Generation III====
* A man in the Desert Resort will mention that he doesn't need Go-Goggles to go through the sandstorm there, a reference to how they were needed to do so in Hoenn. In , he also mentions the Mirage Tower.
* Some of the music themes, such as N's final battle theme, the Team Plasma battle theme, and the Elite Four theme have segments of Hoenn themes in them.
* , the family who offers their own battle challenge to the player, may be compared to the Winstrate family in .
* Returning to the former HM , which is required to access Abyssal Ruins, may be paralled with the underwater in Hoenn.
* In Undella Town, two residents that reside there during the summer mention that they came from the Hoenn region for a vacation. One of them also mentions Steven Stone.
* A in Clay Tunnel mentions that the soil here is similar to the soil in the Hoenn region.
* In , in Icirrus City, there is a married couple that used to be members of Team Magma and Team Aqua.
* When the player obtains the Bicycle, the sprite is that of Acro Bike, rather than the normal one.
* The Gym Leaders of Hoenn can be battled at the Pokémon World Tournament. and Wallace also work as Hoenn's representatives in the Champions Tournament.
* Before fighting Norman in the Pokémon World Tournament, he will mention having been beaten by his child, referencing or 's victory over him in .
====References to Generation IV====
* In Nacrene Gym, the book called "Sweets for Pokémon" describes Poffins and mentions that they are made in the Sinnoh region.
* Caitlin of the Battle Castle appears as an Elite Four member in Unova. She references her prior inability to battle, and mentions the Battle Castle's presence in Sinnoh and Johto.
* Looker appears in search of the Seven Sages of Team Plasma. He is absent in Pokémon Black 2 and White 2, but Shauntal mentions him as part of one of the novels she is writing.
* Cynthia will meet the player at Caitlin's Villa in Undella Town after getting the National Pokédex. The player will be able to battle her in Spring and Summer.
** In addition to this, after defeating her in a battle for the first time, she will mention that the player looked like who faced .
* According to one of the Plasma Grunts in N's Castle, "Team Galactic and Team Rocket drew too much attention to themselves. That's why their plans were thwarted."
* Shauntal mentions the Distortion World in one of her conversations at Caitlin's Villa. She states that was spectacular.
* Before her rematch, Shauntal quotes a line about Volkner, which comes from her novel. In Pokémon Black 2 and White 2, she also mentions Volkner's close friend in another line from her novel.
* A man who gives away Fossils every day at Twist Mountain said that when the player looks carefully and digs at the walls of empty places like caves, the player will find many different kinds of items such as Fossils, a possible reference on how the player can dig up different kinds of items, especially Fossils, at the Sinnoh region's Underground.
* Henry aboard the Royal Unova mentions that he is from the Sinnoh region.
* Upon meeting Skyla for the first time, she tells Cedric, "You are talking like places like Kanto and Sinnoh are right around the corner!"
* In Lentimas Town, a mentions Stark Mountain. Both it and the nearby Reversal Mountain are where reside. The Magma Stone also appears as a Key Item needed to awaken the Legendary Pokémon.
* In the Strange House, the player can find books talking about and , as well as collect the Lunar Wing, which can be used to encounter Cresselia at the Marvelous Bridge.
* The Cave of Being is said to be connected to Sinnoh. The music used in the cave is Lake Caverns from , and entering the cave after entering the Hall of Fame will cause the lake guardians to appear and fly off to various locations around Unova for the player to find and catch.
* In Pokémon Black 2 and White 2, Crasher Wake appears on , much like how he appeared on in , singing his theme song.
* On board the Plasma Frigate, a mentions that he used to be part of Team Galactic.
* In Pokémon Black 2 and White 2, a show on the <sc>Variety</sc> channel mentions that Aaron used to be a and a Gym Leader before joining the Sinnoh Elite Four.
* Shauntal references Bertha in a quote from her novel during the player's post-National Pokédex challenge. She also references Agatha and notes the similarity in appearance between the two.
* After defeating her in battle, Shauntal says she wants her novels to be full of heart and soul.
* A lady at Village Bridge references the Pokéathlon as a very popular competition in Johto.
* After defeating a at , he considers training by standing under a waterfall, referencing Chuck's training method in HeartGold and SoulSilver.
* The Gym Leaders of Sinnoh can be battled at the Pokémon World Tournament. Cynthia also works as Sinnoh's representative in the Champions Tournament.
===Generation VI===
====References to Generation I====
* The layout of Santalune Forest is an almost exact copy of Viridian Forest.
* Several moves originating from Generation I, including and , use their original sound effects.
* Professor Sycamore gives new s one of the three Kanto first partner Pokémon.
* Cassius in Camphrier Town mentions how Bill sent him there to work with the PC.
* A on will mention that he likes to wear shorts because "they are comfy and easy to wear."
* A sleeping is blocking , and the Poké Flute is required to awaken and get past it.
* A remix of the wild Pokémon battle music from Generation I plays when battling and the legendary birds, using exactly the same instrumentation as that of the Game Boy music. The remix also contains the sound effect from Generation I.
* An NPC at mentions that visited Kalos to study abroad, and would frequently end conversations with "Smell ya later!" However, she also says that he got "bonjour" down just fine, which is how he greeted the player while aboard the S.S. Anne.
* A in the Fighting Dojo on the third floor of a building at North Boulevard mentions that her sensei came all the way from the Kanto region to open a Fighting Dojo.
* A male NPC in the Lumiose Museum mentions that he and a group of other people are on an info-gathering trip from Kanto.
* Lysandre Labs is a high-tech facility inhabited by a villainous team where the player needs to use spin tiles and warp panels to navigate around, much like the Silph Co. and the Team Rocket Hideout.
* The uses the same name as the Cerulean Cave in Generation I. Also, both of these locations are the only places in their respective games where can be encountered. Additionally, an NPC blocks the entrance of each Dungeon until the player becomes the , both NPCs tell the player exactly the same thing if they interact with them, and mysteriously vanish after their conditions are met.
* The Poké Ball Factory in Laverre City shares many similarities to Silph Co.. In both cases, an evil team (Team Rocket or Team Flare) infiltrates the facility, and thwarting them rewards a Master Ball. However, Team Rocket's goal is to steal the plans for the Master Ball, whereas Team Flare apparently wants to steal Poké Balls. Another similarity is that in both cases, the event happens in the sixth town that rewards the with a Badge (Saffron City or Laverre City).
* A female NPC in Restaurant Le Nah says she is from Kanto.
* An old male NPC in Mauville City, who tells the player that he was born in Sinnoh, also tells that his son lives in Kanto.
* A in Lilycove City's Contest Spectacular Trainer Fan Club says he came all the way from Kanto to see Lisia.
* A stone in a vitrine in is from Rock Tunnel.
* A sample of water from Kanto is on display at the Oceanic Museum.
====References to Generation II====
* The chase puzzle at the Parfum Palace is similar to the chase puzzle in the Ilex Forest.
* Unlike with other Pokémon, while Surfing on a , the Pokémon gains an alike overworld sprite. Whenever was used outside of battle in Generation II, the overworld sprite of Lapras was used.
* Gym Leader Valerie is said to be from Johto.
* A painting of Ecruteak City appears in the Lumiose Museum.
* A female NPC in Kiloude City says that she is preparing a ian hamburger steak. This is a reference to the Cinnabar Volcano Burger that was the 's specialty in Johto.
* Like in the original games, the player character and / family are originally from the Johto region in .
* A stone in a vitrine in is from Mt. Mortar.
* The Oceanic Museum contains a water sample from the Johto region.
* Two Rage Candy Bars can be found at the Trick House during one of the puzzles.
* A girl in Sootopolis City tells that dedicated fans flock there "from as far away as Kanto and Johto" for "the coolest Water-type Gym Leader".
* When the Magnemite Croquette line in Mauville Food Court becomes available, a boy will note that the dish uses specially made sauce from Johto when entering for the first time.
* If the player has in their team, the head of TV Mauville can show them secret TV specials made about it. One of these specials takes place in Johto.
====References to Generation III====
* A in Azure Bay claims that he swam to Kalos from the Hoenn region.
* A painting of Mr. Briney and Peeko appears in the Lumiose Museum.
* A little girl in Laverre City will mention that her is from Hoenn when spoken to.
* A will mention the hot springs in Lavaridge Town when spoken to.
* An old woman on the second floor of Hotel Richissime mentions that the 40th and 45th wedding anniversaries are the anniversaries, respectively, while her husband next to her mentions that their first date was at the Oceanic Museum.
* When the player can't afford a ride on the Lumiose City cab, one of the s will say when defeated, "Now I won't even have a copper to send back to my family in Hoenn..."
* A woman staying at Hotel Richissime on the fifth floor during the bed making job compares it to the Resort Gorgeous on the Sevii Islands.
* The introduction of Pokémon Omega Ruby and Alpha Sapphire reflects to the original games, including the music.
* The DexNav interface resembles to the layouts from the original Pokémon Ruby and Sapphire. It also uses the original tileset.
* A tells the player that he "heard that Pokémon Centers used to have two stories until 10 years ago" and had "a special area known as the Pokémon Cable Club". The last game to utilise this feature, , was first released in 2004, 10 years before the remakes were released.
* In the Rustboro Gym and the Treasure Hunter's house, a display of the map of Hoenn from Pokémon Ruby and Sapphire by Midori Harada is seen.
* A man at Mt. Pyre mentions how there used to be holes in the floor, a thing that was true in Generation III.
* When the player shows Norman the Eon Ticket, he says that it has been 11 years since he last saw the ticket. Eon Ticket was originally distributed in 2003, 11 years before the remakes' release.
* is referenced in 's description on the , which describes its nature. Although Mirage Islands appear in different parts of Hoenn, none appear on that route.
* The in is referenced several times at the Battle Resort. A man in Battle Maison will mention Scott and the Pike Queen. Another NPC will say to the player that the Battle Resort is planned to be replaced by the Battle Frontier in the future. There is also a model of the on top of the hill.
* The pattern the triangular object at the end of the Delta Episode darts around before emerges is in the same pattern of the Birth Island puzzle from , and .
* The Primal Pokémon battle theme contains small bits of the original super-ancient Pokémon battle theme from Generation III.
* The music that plays inside the Sky Pillar is a remix of the theme that plays when appears to stop the battle between and in Sootopolis City in Pokémon Emerald.
* During the Delta Episode, Wallace battles the player with his team from Pokémon Emerald. In addition, during the cutscene at the end of the Delta Episode, is seen requesting Wallace to take his place as Champion when he one day leaves the Pokémon League to travel the world, referring to their respective roles in Emerald.
* When Lisia is talked to after defeating her and her uncle Wallace in a Pokémon Contest, she mentions that Wallace has a mentor named Juan, who appears in Pokémon Emerald to replace Wallace as the Leader of Sootopolis Gym after Wallace becomes the Champion.
* Wattson mentions that the New Mauville used to be locked up normally before its current, more technological locking system. This is a reference to how, in Ruby, Sapphire, and Emerald, the player required the to enter New Mauville, instead of the new method, which doesn't involve obtaining an item.
* If the player has in their team, the head of TV Mauville can show them secret TV specials made about it. The head of the expeditions featured in these specials is Brandon, a famous explorer and the Frontier Brain of the Battle Pyramid from Pokémon Emerald.
* In Pokémon Super Mystery Dungeon, several characters from Pokémon Mystery Dungeon: Red Rescue Team and Blue Rescue Team appear, such as Team A.C.T., , , and . Elements from those games are also mentioned by them, and the player is able to visit the continent where the games were set.
====References to Generation IV====
* Drasna of the Elite Four claims her grandparents moved to Kalos from a city where the past lives on in a faraway region, and that they raised her on the of the Pokémon of and .
* Looker returns as the main character of a post-game side story and at one point compares his assets to the size of Mt. Coronet. He also appears in Hoenn in the Battle Resort, suffering from amnesia.
* Paintings of the and the Sinnoh Underground appear in the Lumiose Museum.
* An NPC in Snowbelle City will play a remixed version of the music from Jubilife City when spoken to.
* A who wanders between hotels will eventually the player an from Sinnoh, referring to it as "Mr. Backlot's Pokémon". The Eevee's OT is "Elena" (Japanese: ヘレン Helen), the name of one of the Maids in the in .
* A male on the second floor of Professor Sycamore's lab in Lumiose City says that Sycamore studied under Professor Rowan in Sinnoh when he was younger.
* Lumiose City's layout bears a strong resemblance to the logo of the in Generation IV.
* A female NPC in Snowbelle City Pokémon Center tells the player about a long-standing tradition in the Sinnoh region where people give Gracidea flowers to each other as a sign of appreciation. She will also give the player a Gracidea flower if the player shows her a . A male NPC in the Berry Master's house on will make a similar reference and give a Gracidea to the player under the same conditions.
* The Oceanic Museum contains a water sample from the Sinnoh region.
* An old male NPC in Mauville City tells the player that he was born in Sinnoh.
* A painting in Lilycove Museum depicts in "an odd landscape with bizarre and fantastic scenery". Another painting depicts .
* A stone in a vitrine in is from Mt. Coronet.
* A letter found at Sea Mauville mentions the loss of an Odd Keystone donated by the Oreburgh Mine. After reading the letter, it is possible to encounter a in the same room.
* Two Old Gateaux can be found at the Trick House during one of the puzzles.
* On , Hayes mentions having visited some ruins in the Sinnoh region.
* If the player has in their team, the head of TV Mauville can show them secret TV specials made about it. One of these specials takes place in Sinnoh.
* In Pokémon Super Mystery Dungeon, several characters from Pokémon Mystery Dungeon: Explorers of Time, Darkness, and appear, such as Wigglytuff's Guild members, , , , and . Elements from those games are also mentioned by them, and the player is able to visit the continent where the games were set.
** The couple from the WiiWare Pokémon Mystery Dungeon games also appears in Pokémon Super Mystery Dungeon, mentioning their past profession of appraising Treasure Boxes.
====References to Generation V====
* A eating outside of a café in Lumiose City mentions having visited the café in Striaton City.
* Statues of and can be found in the courtyard of Parfum Palace. Two Tourists in the courtyard explain that the two Pokémon are Legendary Pokémon of the Unova region, and that Kalos and Unova must have been in contact with each other.
* A found at the Ambrette Town Fossil Lab, who gives the player the four Drives if shown a , says that he got the Drives from an acquaintance of his in the Unova region.
* At the Ambrette Town Fossil Lab, there are two skulls on display that resemble the Dragon Skull from the Nacrene Gym.
* A on mentions that Colress told him that the big rocks on that route emit some kind of special energy.
* In Shalour City, a reveals that the Hiker who gives the player a Sun Stone in the same city likes ferris wheels and has finally found true love. This is likely a reference to Hiker Andy, who can ride the with the player in Nimbasa City.
* A male in Coumarine City will play a remix of the song "An Unwavering Heart" from Generation V when spoken to.
* A in Coumarine City explains that Dr. Fennel of the Unova region created Game Sync.
* A female in Coumarine City mentions that Pokémon dream when they're tucked in with Game Sync.
* A in Coumarine City explains that Triple Battles and Rotation Battles got their start in the Unova region.
* A male in the Pokémon Center mentions Team Plasma "making news in the Unova region".
* A on the first floor of the building containing the Fighting Dojo asks about the whereabouts of , before mentioning that she's looking for Master Miles.
* A woman on the first floor of the building containing the Fighting Dojo mentions that she recently moved from a very rural part of Unova.
* Paintings of both Castelia City and the Battle Subway appear in the Lumiose Museum.
* One of the items that the player may be asked to find during the lost-and-found job in Hotel Richissime is a Brycen-Man Figure.
* A at the mentions how the trains at the station are completely different from the subways in Unova, where she comes from.
* A in the says, "Ore, ore, ore... Ores that I adore! Ah, this is where you should laugh..." This heavily implies he's the who can be found in Icirrus City, as he says the same thing when talked to for the first time.
* A on says that she can't wait to finish reading Shauntal's new book.
* Clara on says that her hometown is Mistralton City.
* According to the television show "Gym Freaks", Wulfric is a fan of the Brycen-Man Series, and Clemont is secretly saving up money to visit the amusement park in the Unova region.
* An at the Lumiose Museum mentions that his partner learned the move in the Village of Dragons.
* A globe in Wally's house has a pin stuck in the place of Unova.
* A at the Devon Corporation tells the player that he's working on a machine that can visualize a Pokémon's dreams, and mentions that a rival of his is working on a similar project in the Unova region.
* The Oceanic Museum contains a water sample from the Unova region.
* Aarune tells the player upon meeting him that he is originally from the Unova region.
* An old male NPC in Mauville City, who tells the player that he was born in Sinnoh, also tells that his great-grandson is "off dreaming in Unova".
* A Backpacker in Mauville City mentions he is from Castelia City.
* A stone in a vitrine in is from Chargestone Cave.
* A model of then-unfinished Royal Unova can be found at the Oceanic Museum.
* Two Casteliacones can be found at the Trick House during one of the puzzles.
* A man in Pacifidlog Town mentions how he once dreamed of playing at the Big Stadium. He also gives the player .
* A model of Castelia City is available as a Secret Base decoration in the Lilycove Department Store rooftop sale.
* When first met in the Granite Cave, Zinnia talks to the player about truths and ideals, referencing to and , respectively.
* A Backpacker in the basement of S.S. Tidal mentions that he is from Unova.
* In Pokémon Super Mystery Dungeon, several characters from Pokémon Mystery Dungeon: Gates to Infinity appear, such as , , , , , , . Elements from that game are also mentioned by them, and the player is able to visit the continent where the game was set.
====References to Generation VII====
* A that can be found in one of the various hotels in Kalos speaks about the region he is from, separate from the regions of the first five generations. He also gives the player a Strange Souvenir. This is so far the only direct reference to a future generation seen within the core series.
===Generation VII===
====References to Generation I====
* The player character in and and their family have moved to Alola from the Kanto region.
* and make an appearance at the Battle Tree in Alola.
* Heahea City was said to be formed by people who traveled from Kanto and Johto long, long ago and came together in the Alola region.
* A in Heahea City says that he wants to document all the differences between Diglett's Tunnel in Alola and Diglett's Cave in Kanto.
* A poster within the Geothermal Power Plant on Blush Mountain talks about the Kanto Power Plant. It also goes on to say that the Legendary Pokémon appeared there once.
* An NPC at Aether Paradise mentions that her group is there to study how things are done there, and compares it to how things are done at the in Fuchsia City.
* Malie Garden is colloquially called "Nugget Garden" and has its own along with a similar challenge of battling a number of Trainers on it. The Trainers even use the same Pokémon and lines dialogue as the Trainers on the original Nugget Bridge in .
* An NPC at Aether Paradise mentions that the PC Boxes for Pokémon Storage System were developed by Bill in the Kanto region. He adds that Bill is "apparently a real ".
* In Sun and Moon, Lillie takes Lusamine to see Bill in the chance he could help make Lusamine better after she got bonded with after hearing about how Bill got combined with a Pokémon.
* A woman in the Hau'oli City Mall next to a poster says "Hey! Under this poster... There's nothing! Of course there's no switch, silly!", referencing the secret switch under the poster in the Rocket Game Corner that gave access to the Team Rocket Hideout.
* Professor Kukui tells the player about his travels in the Kanto region and how he challenged the Pokémon League there.
* One phrase that the player may receive from the Johto Tent at the Festival Plaza is "You better have Burn Heal!" This line is also spoken by Blaine before his Gym battle.
* In Ultra Sun and Ultra Moon, the player has an autograph from Lt. Surge in their room.
* In Ultra Sun and Ultra Moon, Malie City houses the Kantonian Gym, which is modeled after the Gym in Vermilion City. Defeating the Leader of the Gym rewards the player with a Surge Badge, a reference to the and the Gym Leader who hands it out, Lt. Surge.
* When encountered on in Ultra Sun and Ultra Moon, Looker mentions that there have been reported sightings of the infamous Pokémon mafia in Alola. This also foreshadows the events of the post-game.
* The woman selling fossils in Olivia's jewelry shop in Konikoni City mentions that Olivia brought the Dome and Helix Fossils to Alola from the Kanto region.
* A on Mount Lanakila mentions how he and his fellow Black Belts next to him are from the Fighting Dojo.
* Team Rocket makes a return as Team Rainbow Rocket, with Giovanni once again as its leader. Giovanni also uses a to battle the player.
* Giovanni's battle theme in Team Rocket's Castle contains remixed bits of the Team Rocket Hideout theme.
* In Ultra Sun and Ultra Moon, Gladion travels to Kanto and Johto to train. When he returns during the post-game, he uses the fully evolved form of a Kanto first partner Pokémon.
* In Pokémon Quest, the player is accompanied by a drone named MoBee IV, which is mentioned to have been manufactured by the Silph Co.
* Pokémon: Let's Go, Pikachu! and Let's Go, Eevee! are modified remakes of .
* In Cerulean City, one of the Bicycles on display at the Bike Maniac's house is described to be a limited edition Bicycle that was popular a while ago and costs 1,000,000, referring to the Bicycle in Generation I that cost this amount and was thus unbuyable.
* In Vermilion City, a man with a nicknamed Dux mentions how he's planning to go catch a soon, referencing the Generation I in-game trade where the player can trade a Spearow for a Farfetch'd named Dux in the same city.
* In Celadon City, a ponders the possibility of making more money with the Game Corner if they offered Pokémon in exchange for s, which is how the Game Corner functions in Generation I.
* The logo of the Rocket Game Corner features a , whose Master Trainer is also found in the same location during the post-game. These are references to the Rocket Game Corner's Prize Exchange being the only method to obtain Porygon in Generation I.
* After being defeated, Hideo on mentions that he and his friends used to ride their bikes up and down the road a long time ago, referring to 's status as the Cycling Road in previous generations, as well as to the fact that the Punk Guys in Pokémon: Let's Go, Pikachu! and Let's Go, Eevee! are modeled after the Generation I s.
** This is further referenced by Orson on Route 17, who, after being defeated, mentions how the route used to be called the Cycling Road before it was converted into the Pokémon Road.
* When the player visits Professor Oak's Laboratory after defeating the first seven Gyms, Professor Oak pretends to have forgotten Blue's name and asks what it is, referencing the opening of the Generation I games, where he asks the player the same question.
* After being defeated, Lance briefly jokes that Professor Oak will be the player's final battle at the Pokémon League, alluding to the scrapped battle against Professor Oak in the Generation I games.
====References to Generation II====
* Heahea City was said to be formed by people who traveled from Kanto and Johto long, long ago and came together in the Alola region.
* Malie City was also said to be formed by people from Johto settling in Alola.
* Malie Garden also has a lake inside of it in the shape of a Gyarados, an allusion to the Lake of Rage in Johto.
* A in Malie City mentions that she is from Johto and finds it odd that people in Alola don't use to travel, before giving the player the TM for the move.
* Lana mentions having reeled in a Red Gyarados once. In the end, she was just trying to trick the player into believing her.
* A poster within the Geothermal Power Plant on Blush Mountain mentions the Kanto Power Plant and how a Machine Part being stolen from there once put the entire plant out of operation, referencing the post-game events of the Johto games.
* On Mount Lanakila, Professor Kukui mentions facing the Indigo League and how tough the battle with Lance was. Lance was the of the Indigo League in the Generation II games and their remakes.
* The player is able to obtain one Apricorn Ball each per game. These are the special Poké Balls that Kurt makes by hand in the Johto region. In Ultra Sun and Ultra Moon, the player can also receive one of each Apricorn Ball from a Game Freak employee in Heahea City by showing him a Pokémon from a Virtual Console version of a Generation II game.
* A Rage Candy Bar is given to the player in Pokémon Center Cafés when buying a drink for the first time on Tuesdays.
* When Moomoo Milk is purchased at a Pokémon Center Café, the man running the café can sometimes mention the Goldenrod City Gym Leader Whitney, saying that her supposedly produces high quality Moomoo Milk.
* In Ultra Sun and Ultra Moon, Gladion travels to Kanto and Johto to train.
* In Ultra Sun and Ultra Moon, a in the Akala Ferry Terminal in Heahea City mentions Kurt and the rare GS Ball, claiming that its name stands either for the "greatest smith's ball" or "Gold-Silver Ball".
* In , is mentioned to possess the Berserk Gene, which was also a Generation II-exclusive item heavily related to Mewtwo. It is used to make a drug called "R", which temporarily boosts a Pokémon's power while also causing them to go berserk, referencing the Berserk Gene's effect of boosting a Pokémon's upon consumption, while also it.
* After Giovanni has been defeated at the Viridian Gym and he's left to train alone, takes charge of the Gym himself, just like he had done in Generation II. In addition, when he's challenged for a rematch during the post-game, he mentions how he's planning to remodel the Gym, which he's seen to have done in Generation II.
* After being defeated in a rematch, Sabrina mentions how she won't be facing another challenger like the player for three years, referencing the three-year gap in-between the events of the Kanto and Johto games and her future battle against the Johto player character, whose arrival she claims to have foreseen three years in advance when met in Generation II.
* After being defeated in a rematch, Koga mentions how he has plans to join the Elite Four, which he's accomplished by the time of the Johto games. From the second rematch onward, he will also mention his daughter before the battle.
* From the second rematch onward, Blaine mentions that the Volcano is being active lately in his pre-battle dialogue. In addition, a news flyer at the Cinnabar Pokémon Center warns people of the possibility of a volcanic eruption. These are references to the eruption of the Cinnabar Volcano, which occurs before the events of Generation II and devastates most of Cinnabar Island.
====References to Generation III====
* Wally makes an appearance at the Battle Tree in Alola.
* A at Vast Poni Canyon mentions that his idol is Professor Birch.
* Lana jokes that could be found in Brooklet Hill's waters.
* Anabel appears in the post-game as a member of the International Police and Looker's superior. She is mentioned to have "protected some tower" in the Hoenn region and having been a powerful Trainer, referring to her status as the Frontier Brain of Hoenn's in . She can also be found at the Battle Tree, another battle facility, where she mentions the location making her feel nostalgic.
* When examining the shelves in Thrifty Megamart on Royal Avenue, the player is informed that the shop has a sale on shipping-damaged Lava Cookies.
* A Lava Cookie is given to the player in Pokémon Center Cafés when buying a drink for the first time on Saturdays.
* While describing , Ilima mentions how "the Pokédex from a distant land says that the arching movement and glitter of its pendulum lulls its foes into a deep state of hypnosis", referencing Hypno's Pokédex entry from .
* The woman selling fossils in Olivia's jewelry shop in Konikoni City mentions that Olivia brought the Root and Claw Fossils to Alola from the Hoenn region.
* In Ultra Sun and Ultra Moon, the man in the Ula'ula Ferry Terminal in Malie City who gives the player a Nugget says that he dug up lots of Nuggets on the Sevii Islands. This heavily suggests that this man is the same one who can be found mining for gold at Three Isle Path in , further supported by their similar dialogue.
* Maxie and Archie, in their Generation III designs, appear as members of Team Rainbow Rocket, using and Kyogre, respectively, to battle the player.
* The Bike Maniac's Bicycle collection in Cerulean City includes Acro and Mach Bikes.
* On , David mentions "a move in another region that lets you dive underneath the water", likely referring to Hoenn (where was first introduced) and its underwater areas.
* and 's VS models' poses in Pokémon: Let's Go, Pikachu! and Let's Go, Eevee! are identical to Red and 's VS poses, respectively, in .
====References to Generation IV====
* Cynthia makes an appearance at the Battle Tree in Alola.
* A in the Pokémon Center on questions who would win in a matchup between the Masked Royal and Crasher Wake.
* In order to research how the Ultra Beasts emerge from portals, the Pokémon , , and are noted at the Dimensional Research Lab.
* When examining the shelves and fridges in Thrifty Megamart on Royal Avenue, the player is informed that the shop has a sale on Mt. Coronet Fresh Water, as well as on Sinnohan Poffin Assortments.
* The laboratory in Aether Paradise contains files about the development of . According to the one of them, materials for the development were collected from Canalave Library.
* Looker appears in Alola as Anabel's subordinate.
* When encountered on in Ultra Sun and Ultra Moon, Looker mentions how Alola doesn't have anyone "so terrible as to try to create a new world", referencing Team Galactic.
* An Old Gateau is given to the player in Pokémon Center Cafés when buying a drink for the first time on Thursdays.
* The woman selling fossils in Olivia's jewelry shop in Konikoni City mentions that Olivia brought the Skull and Armor Fossils to Alola from the Sinnoh region.
* The designs for the male and female s greatly resemble those of the Sinnohan s and s, respectively.
* In Ultra Sun and Ultra Moon, the player can find a bottle message at Ula'ula Beach, which they can deliver to Kainoa at the Malie City Outer Cape. He will tell the player that the message is from a friend of his named Arabella, who works as a Gym Trainer in Kanto. This is a reference to Arabella, who can be battled at the Viridian Gym in .
* Cyrus appears as a member of Team Rainbow Rocket, using either or to battle the player.
* Archer appears as a member of Team Rocket. During the post-game, he mentions his plans to leave Kanto and one day bring back Team Rocket, referencing his role as the leading of Team Rocket in .
====References to Generation V====
* Professor Burnet makes her core series debut in , working at the Dimensional Research Lab in Heahea City, and being married to Professor Kukui. She also gives the player the Reveal Glass, referencing her origin game.
* An mentions that she once worked in Driftveil City, helping Pokémon that got separated from their Trainers, most likely due to the actions of Team Plasma.
* Colress makes an appearance on , and talks about his wish to bring about the full potential in Pokémon. After the player has become , he'll reappear and give the player Genesect's Drives, mentioning how they were created at the P2 Laboratory. He also makes an appearance at the Battle Tree.
** In Ultra Sun and Ultra Moon, Colress's role is expanded. He can now first be seen at the Tide Song Hotel in Heahea City, thinking about he met. He also helps the Ultra Recon Squad by developing two devices, which are modified versions of the Colress Machine, for fusing and de-fusing with and . When he later gives these devices to the player on Mount Lanakila, he alludes to his regarding Pokémon fusion. During Episode RR, he appears again to assist the player and Lillie at Team Rocket's Castle, using another modified Colress Machine to send dimension-displaced back to where they came from.
* When encountered on in Ultra Sun and Ultra Moon, Looker mentions how Alola doesn't have anyone trying to separate Pokémon from their Trainers, referencing Team Plasma.
* Grimsley can be found on , and registers on the player's Poké Ride. He can also be found in the Battle Tree. In Ultra Sun and Ultra Moon, he also initially holds high scores on all the Mantine Surf beaches and mentions he's a former member of the Unova Elite Four.
* A Casteliacone is given to the player in Pokémon Center Cafés when buying a drink for the first time on Wednesdays. A Sweet Heart can be received on Sundays under the same conditions.
* The woman selling fossils in Olivia's jewelry shop in Konikoni City mentions that Olivia brought the Cover and Plume Fossils to Alola from the Unova region.
* Ghetsis appears as a member of Team Rainbow Rocket, using either or to battle the player.
====References to Generation VI====
* Dexio and Sina, Professor Sycamore's assistants from , appear in Sun, Moon, Ultra Sun, and Ultra Moon, telling the player about and its and giving the player a Zygarde Cube, which is stated to have been discovered by Professor Sycamore. When met in Heahea City, they mention being reminded of a group of five young Trainers, referring to the Kalos player character and their rivals. They later appear on Poni Island and inform the player about Mega Evolution, giving the player a Key Stone and an Alakazite. They also make an appearance at the Battle Tree.
* When encountered for the first time on , Colress wonders out loud if the Z-Ring's/Z-Power Ring's power can surpass that of the Mega Ring.
* A man on the first floor of the Dimensional Research Lab in Heahea City mentions having heard about "some rare Pokémon that can use rings to teleport itself through space", describing .
* A on says that there is a Pokémon in the Kalos region with bamboo leaves in its mouth, referring to and .
* A poster within the Geothermal Power Plant on Blush Mountain talks about the Kalos Power Plant. It mentions that it draws its energy from space with microwaves and send back to the planet's surface. The people in Kalos work with Porygon in space.
* In Sun and Moon, Samson Oak mentions that the Rotom Pokédex was built with the help of a "young fellow" from Kalos. This is a reference to Clemont, a Kalosian Gym Leader known for his reputation as a genius inventor.
* After becoming the , Kylie and Ashlyn on Poni Breaker Coast will tell the player that they come from the Kalos region. They also talk about Trainer PR Videos and about being known in Kalos for their skills in HM-making.
* A Lumiose Galette is given to the player in Pokémon Center Cafés when buying a drink for the first time on Mondays. A Shalour Sable can be received on Fridays under the same conditions.
* In Hau'oli City, Ilima's mother gives the player a Lumiose Galette and explains that it's his favorite food from the Kalos region, where he went to study abroad.
* There is a in Malie City. A who is dining there says that he once visited the branch in Kalos.
* During Acerola's trial at the , a picture of Pikachu Pop Star can be seen amongst the many pictures in 's room.
* In Ultra Sun and Ultra Moon, a in Po Town says he's from the Kalos region.
* The bottom floor of Resolution Cave has a practically identical layout to Zygarde's chamber in Kalos's Terminus Cave. In Sun and Moon, a Zygarde Cell is found in the center of the chamber, while in Ultra Sun and Ultra Moon, a 50% Forme Zygarde is there instead, like it was in Terminus Cave in X and Y.
* After becoming Champion, a mysterious man appears in Haina Desert, apparently suffering from amnesia. If the player shows him a /, he will regain his memories and mention that he first encountered the Pokémon shown to him 30 years earlier, and that the "star pulses" it bestowed upon him have been passed down to "a group of wonderful men". This is likely a reference to the old guys and the O-Powers they give to the player in , as the same sound effect used when obtaining an O-Power is used when Solrock/Lunatone causes the man to regain his memories.
* The woman selling fossils in Olivia's jewelry shop in Konikoni City mentions that Olivia brought the Jaw and Sail Fossils to Alola from the Kalos region.
* In Ultra Sun and Ultra Moon, a boy in the Akala Ferry Terminal in Heahea City mentions the factory in Kalos that makes Poké Balls.
* Lysandre appears as a member of Team Rainbow Rocket, using either or to battle the player. He also mentions the ultimate weapon, forcing the player character to make a similar choice between two buttons as he did for the Kalos player character in X and Y.
* When the player enters the S.S. Anne, gives them a Shalour Sable.
* One of the games at the Rocket Game Corner features a Pikachu fighting in a mask, a reference to Pikachu Libre. This could also be a reference to Pokkén Tournament, in which Pikachu Libre is a playable Pokémon.
===Generation VIII===
====References to Generation I====
* An NPC in Motostoke and a in Circhester mention that curry is a big thing in Kanto.
* An NPC in Hammerlocke mentions that in Galar look different from Meowth in Kanto and Alola.
* A boy in Wyndon says that a nearby is named Marcel, a reference to the Mr. Mime that can be obtained from an in-game trade in .
* An NPC in Wyndon says that both Kantonians and Galarians like waiting in lines.
* The Cram-o-matic can sometimes give the player a Safari Ball. Its description mentions the Kanto Safari Zone.
* Deneb mentions that she traveled to Kanto to train at the Fighting Dojo.
* Todd, the player character of Pokémon Snap, returns as an NPC in New Pokémon Snap. He also helped Professor Mirror in designing the NEO-ONE, which is directly based on the ZERO-ONE vehicle designed for him by a certain Pokémon Professor years earlier.
* Todd remarks that the Mightywide River makes him feel nostalgic, referencing the fact that it shares many similarities with the River and Valley stages from the original Pokémon Snap.
* of the Miss Fortunes mentions that she came to Hisui from Kanto.
====References to Generation II====
* Rage Candy Bar is one of the rewards the player can win at the Battle Café.
* The Ball Guy gives the player one of each kind of Apricorn Poké Ball over the course of the game. More can also be obtained from him by winning a tournament at the Pokémon League.
* Apricorns can be found and turned into Apricorn Poké Balls on the Isle of Armor.
* The Cram-o-matic can sometimes give the player a Sport Ball. Its description mentions the Bug-Catching Contest in the Johto region.
* Like in Johto, s are used as crafting materials for Poké Balls in Hisui.
* During Request 32: "The Headache-Stricken Psyduck", a Galaxy Team member named Tomma is revealed to be from Cianwood City and gives the player some of his hometown's Secret Medicine.
* During Request 67: "The Clefairy's Moonlit Dance", a Galaxy Team member mentions that dance during the full moon where he comes from, likely referencing the Clefairy dance at Mt. Moon Square. When the player witnesses Clefairy dancing during the request, a remix of the theme that plays during the Clefairy dance in Generation II is heard. Just like in Generation II, the Clefairy also leave behind a Moon Stone while running away.
* In the Italian language version of Pokémon Legends: Arceus, during the main game climax at the Temple of Sinnoh, Kamado mentions the Whirl Islands and Mt. Silver.
====References to Generation III====
* Lava Cookie is one of the rewards the player can win at the Battle Café.
* Kabu is mentioned to have come to Galar from Hoenn.
* The ruins containing the legendary giants use a remixed version of the music their ruins in Generation III use.
* There's an inaccessible restaurant in Jubilife Village called the Sevii Kitchen, which is a reference to the Sevii Islands.
====References to Generation IV====
* Old Gateau is one of the rewards the player can win at the Battle Café.
* The Cram-o-matic can sometimes give the player a Safari Ball. Its description mentions the Great Marsh in Sinnoh.
* The legendary giants in the Crown Tundra are encountered by lighting up floor tiles by walking on them and then interacting with a statue, similar to how the legendary giants were awakened in . The screen also shakes at the beginning of the encounter in a similar fashion as it does in Platinum.
* In the first series of rematches, the Sinnoh Elite Four members use their respective teams from Platinum.
* The Hisui region, the setting of Pokémon Legends: Arceus, is the Sinnoh region in the past. During the post-game, Kamado alludes to the region's present-day name by mentioning that Hisui could be called the Sinnoh region after the "almighty Sinnoh" worshipped by the Diamond and Pearl Clans.
* Kamado is the ancestor of Professor Rowan.
* Galaxy Team shares its Japanese name with Team Galactic. During the post-game, Cyllene promises to pass down the team's name to the following generations, explaining how Team Galactic got its name.
* One of the Old Verses the player can find in Hisui mentions Sinjoh, whose ruins the player can visit during an event in .
* The pattern seen at the Hall of Origin in Pokémon Legends: Arceus is the same one seen during the Sinjoh Ruins event.
====References to Generation V====
* Casteliacone is one of the rewards the player can win at the Battle Café.
* At the Hulbury station, a mentions that it should be possible to battle on board the trains, like in Unova.
* The Dream Ball, previously exclusive to Unova's Entree Forest, can be obtained from the Ball Guy at Wyndon Stadium.
* A man in one of Wyndon's Pokémon Centers mentions that he's from Unova.
* Ingo, one of the es of Unova, appears as a warden in Hisui, having been transported back in time to Pokémon Legends: Arceus's time period. He mentions having faint memories of and a man who looked like him.
====References to Generation VI====
* Lumiose Galette and Shalour Sable are possible rewards the player can win at the Battle Café.
* A on says that swimming experts can swim from Galar to Kalos.
* If the player character is , their default shirt in Pokémon Legends: Arceus is one from .
====References to Generation VII====
* Two NPCs at the Meetup Spot train station will notice if the player has played Pokémon: Let's Go, Pikachu! or Let's Go, Eevee!, referring to it as a "Let's Go experience", and give the player a (if the player has save data of Let's Go, Pikachu!) and an (if the player has save data of Let's Go, Eevee!).
* A woman in Motostoke mentions that she came from Alola to see the Gym Challenge.
* Big Malasada and Pewter Crunchies are possible rewards the player can win at the Battle Café.
* After being defeated, a compares his battle with the player to a type of drink. The drinks he can mention are the same ones that can be bought at Alola's Pokémon Center Cafés.
* An NPC in Hammerlocke mentions that in Galar look different from Meowth in Kanto and Alola.
* After becoming , the player can obtain a Beast Ball from the bargain shop keeper at Stow-on-Side. More can also be obtained from the Ball Guy by winning a tournament at the Pokémon League.
* On the Isle of Armor, the player encounters who mentions having caught 151 in Alola, but they escaped across the island. He asks the player's help in finding them, rewarding them with other Pokémon he met in Alola, mostly Alolan forms, whenever they've found a certain amount of Diglett.
* Mustard can be seen playing Pokémon Quest in the Master Dojo.
* 's Pokémon Sword Pokédex entry mentions the Tauros in Galar being too wild to be ridden, referencing the use of Tauros as Ride Pokémon in Alola.
* In The Crown Tundra, an Ultra Wormhole brings Ultra Beasts to the Max Lair.
* Legendary Clue? mentions Ultra Wormholes being first discovered by Professor Mohn.
* Peonia mentions that the scientist running the Max Lair used to work at a . She also mentions wanting to visit Alola to taste malasada.
* When the player gains the ability to ride , Professor Laventon compares it to Alola's Ride Pokémon.
* As part of a request, the player has to look for five lost at the Alabaster Icelands. The man who gives the request says he's from Alola.
===Generation IX===
====References to Generation I====
* Several food vendors around Paldea mention they're from Kanto.
* The Pika-Vee Case for the player's Rotom Phone features the sprites of and , possibly referencing the first battle of the game.
* The Monstrous Tablecloth's description mentions that it was designed by members of the Pewter Museum of Science.
* The Tera Jewel resembles the sprite of a from Generation I.
* The Alfornada observatory, which also houses the town's battle court, is decorated with images of Generation I menu sprites.
* Roman the in South Province (Area Five) says "Hoo hah!" when the player challenges him. After being defeated, he says he's imitating a martial artist he idolizes. This a reference to Bruno, who uses the same phrase before being battled.
* A Safari Ball is obtainable as a milestone reward while completing the Blueberry Pokédex. Its item description mentions the in Kanto.
====References to Generation II====
* One of each of the Apricorn Poké Balls is obtainable as a milestone reward while completing the Paldea Pokédex.
* The music options that can be played while the player is taking a photo with their Rotom Phone include remixed versions of the Johto wild Pokémon battle theme, the Pokémon March, and the Pokémon Lullaby.
* Perrin gives the player a Sport Ball during The Indigo Disk expansion for completing her side quest. Its item description mentions the Bug-Catching Contest in Johto.
====References to Generation III====
* For the Cascarrafa Gym's Gym Test, the player must buy Kofu rare Hoennian seaweed at an auction at Porto Marinada to be used as a cooking ingredient.
* The Bitter Melon Stir-Fry served at Medali's Treasure Eatery is described as a recreation of a recipe that the restaurant's head chef encountered in Hoenn.
====References to Generation IV====
* A Safari Ball is obtainable as a milestone reward while completing the Blueberry Pokédex. Its item description mentions the Great Marsh in Sinnoh.
====References to Generation V====
* A Dream Ball is obtainable as a milestone reward while completing the Paldea Pokédex.
* The shirt worn by s features the Pokéstar Studios logo.
* Blueberry Academy, the sister school of Naranja Academy/Uva Academy, is located in Unova.
* Many music themes used at Blueberry Academy are remixed versions of themes from .
* Lacey is the daughter of Clay, while Drayton is the grandson of Drayden.
* Crispin, Lacey, Amarys, and Drayton's respective hometowns are Virbank City, Nimbasa City, Castelia City, and Opelucid City.
* Castelia City's theme is one of the unlockable background themes for the League Club Room.
* The monochrome design of the League Club Room is colored black and white, referencing the names of the Generation V core series games. In addition, this version of the room features paintings of Skyarrow Bridge, Black City, and White Forest, as well as a model of Nimbasa City's .
* The futuristic design of the League Club Room features several references to the Big Monster and Invaders Series from Pokéstar Studios.
* When met in the League Club Room, Brassius mentions how there is another type specialist working as an artist in Unova. In a later conversation, he mentions he visited their art gallery in Castelia City, which was filled with .
* When met in the League Club Room, Larry asks the player if he should try out Berry sandwiches or Casteliacones. Following the player's recommendation, he tries out one of them in-between visits to Blueberry Academy.
* When met in the League Club Room for the third time, Raifort mentions she visited the Abyssal Ruins in-between visits.
* Chargestone Cavern is highly similar to Chargestone Cave in both name and appearance, featuring the same kind of blue, electrified, and occasionally floating rocks.
* A plateau in the Terarium's Canyon Biome has the same layout as the Nature Preserve. Similar to the Nature Preserve, this area also houses a as a fixed encounter.
* One of the requirements for encountering in the Coastal Biome is selecting the Sepia filter on the player's Rotom Phone camera. This is a reference to the Meloetta event in Black, White, Black 2, and White 2, where the who teaches Meloetta at mentions recalling the melody from his "sepia-toned memories".
====References to Generation VI====
* The Meditative Seat, Heterarchical Loop, and Paradoxical Popper Super-Secret Base decorations from can be found on display at Artazon.
* s, which in Kalos, can be found across Paldea.
* 's Pokédex entry from states that it's speculated to have a connection to "a phenomenon that occurs in a certain region", referencing Mega Evolution.
* Atticus can sell the player replicas of the Expansion, Magma, and Aqua Suit helmets at Porto Marinada.
* Pokémon Legends: Z-A takes place in Lumiose City and features Mega Evolution.
====References to Generation VII====
* In Nemona's house in Cabo Poco, there is a painting that appears to reference , even though Ash-Greninja is not present in Pokémon Scarlet and Violet due to a change in the way its Ability works.
* Images of Akala Island and the Altar of the Sunne/Moone appear in Salvatore's languages classroom.
* After being defeated, Iono references the Z-Move .
* A book in the Naranja Academy/Uva Academy entrance hall mentions Pewter Crunchies.
* A Beast Ball is obtainable as a milestone reward while completing the Paldea and Blueberry Pokédexes.
* One of the shaved ice flavors available at Kitakami is named "Alola Blue".
* If the player has save data from Let's Go, Pikachu! or Let's Go, Eevee!, a woman in Mesagoza mentions the player adventuring in Kanto and the phrase "Let's Go!", before giving the player a phone case featuring and .
* A at Blueberry Academy can teach the player the "Electrium Z" emote, which has the player perform the Z-Move pose.
* Atticus can sell the player replicas of Aether uniform shoes, Ultra Recon Squad glasses, and Ryuki's gloves at Porto Marinada.
====References to Generation VIII====
* Images of Professor Laventon and a Hisuian appear in Raifort's history classroom.
* A woman in Mesagoza will grant the player various Rotom Phone cases if the player has any save data from a Nintendo Switch game:
** If the player has save data from , she makes a reference to Dynamaxing, before giving the player a phone case modeled after the Ball Guy.
** If the player has save data from , she references the Grand Underground and Super Contest Shows, before giving the player a phone case based on a Pokétch.
** If the player has save data from , she makes references to Hisui and the Arc Phone, before giving the player a phone case modeled after said phone.
* A copy of Galar: A History can be found at Naranja Academy/Uva Academy. It describes the destruction of the Stow-on-Side mural during the events of Pokémon Sword and Shield.
* A at the Paldean academy's cafeteria mentions curry.
* Penny is mentioned to be from Galar.
* and 's Pokédex entries reveal that, unlike in Galar, Corviknight is unable to serve as the Flying Taxi Pokémon in Paldea due to Tinkaton's habit of attacking it mid-flight.
* Perrin mentions that her ancestors come from Sinnoh back when it was called Hisui. At one point, she also uses Adaman's catchphrase, "Time wasted is lost", which she says is a saying passed down in her family, confirming her as Adaman's descendant. She also takes the player to a photo survey to find a , during which several themes from Legends: Arceus can be heard, including The Heartwood and Hisui wild Pokémon battle themes.
* Atticus can sell the player a replica of Marnie's backpack and a helmet modeled after the Ball Guy at Porto Marinada.
* One of the Poké Ball-throwing styles the player can unlock using the League Club Room PC is that of the former Galar Leon.
* If the player shows a Pokémon with the Mightiest Mark to a student in Blueberry Academy's School Store, he will teach them Leon's signature Pose as an emote.
* Jubilife Village's theme is one of the unlockable background themes for the League Club Room.
* Near the beginning of Mochi Mayhem, Penny gets irritated during a phone call with her father by his use of the word "Adven-tour" and describes him as "ultra-mega-annoying" afterwards. This heavily implies that her father is Peony, as he uses the same word and prefix in his dialogue.
==Related articles==
* List of cross-canon references
Category:Pokémon meta
Category:Games
Category:Lists
it:Elenco dei riferimenti tra le varie generazioni