Retroactive continuity

Retroactive continuity—commonly contracted to the portmanteau word retcon—refers to deliberately changing previously established facts in a work of serial fiction. The change itself is referred to as a retcon, and the act of writing and publishing a retcon is called "retconning."
When George Lucas re-edited the original Star Wars trilogy, he made changes directly to the source material, rather than introduce new source material that contradicted the contents of the previous material. However, the Star Wars prequels qualified as "new source material," and many fans have pointed out instances which apparently retcon elements of the original trilogy.
Although the concept is older, Tupper, E. Frank. The Theology of Wolfhart Pannenberg. Philadelphia: Westminster Press (1973). p. 100, 221. . Note: This book seems to be the first printed use of the concept. the term "retroactive continuity" was popularized in 1983 by Comic Book writer Roy Thomas,Roy, Thomas. All-Star Squadron 18, letters column. DC Comics (February 1983). "We like to think that an enthusiastic ALL-STAR booster at one of Adam Malin's Creation Conventions in San Diego came up with the best name for it a few months back: 'Retroactive Continuity'. Has kind of a ring to it, don't you think?" and the shortened form "retcon" on Usenet in the late '80s.
==Star Wars movies==
*In A New Hope, Ben Kenobi told Luke Skywalker that his father was betrayed and murdered by a pupil of his, Darth Vader. — Obi-Wan Kenobi: "A young Jedi named Darth Vader, who was a pupil of mine until he turned to evil, helped the Empire hunt down and destroy the Jedi Knights. He betrayed and murdered your father." The Empire Strikes Back reveals Darth Vader to be Luke Skywalker's father. — Darth Vader: "No. I am your father." In Return of the Jedi, Obi-Wan explained to Luke what he meant by telling him that Vader murdered his father, informing what he said was true, "from a certain point of view", since the Anakin that Obi-Wan remembered fondly "was destroyed" when he fell to the dark side of the Force, and therefore no longer considers him "Anakin" (this is supported by Obi-Wan only calling Vader "Darth" in A New Hope and not by his real name). While the in-universe explanation holds up fairly well, whether or not this was actually a retcon out of universe is one of the most hotly debated topics concerning the original trilogy. This point was explained in the Disney+ series Obi-Wan Kenobi.
*In the original release of A New Hope, Han Solo proceeded to pre-emptively shoot Greedo, while in later re-releases up to the Disney acquisition it was shown that Greedo shot first and missed Han by inches while Han shot back, with Lucas later claiming that Greedo always shot first in spite of the shooting script stating otherwise. This infamously resulted in the "Han shot first" controversy among fans.
*In A New Hope, Ben Kenobi says the Old Republic existed for a thousand generations, — Obi-Wan Kenobi: "For more than a thousand generations, the Jedi Knights were the guardians of peace and justice in the Old Republic." which Expanded Universe sources interpreted to mean 25,000 years. However, in Attack of the Clones, Palpatine said that the Republic had "stood for a thousand years". This would be rectified in the Legends Expanded Universe with the creation of the Ruusan Reformation. However, after April 2014, the Expanded Universe, now known as Star Wars Legends, is no longer considered canonical. 2020's The Star Wars Book would further establish that the canon Old Republic was indeed founded more than 25,000 years prior to A New Hope.The Star Wars Book
*In The Empire Strikes Back, Ben Kenobi's assertion that Luke was the last hope — Ben: "That boy is our last hope." Yoda: "No. There is another." could either mean that he was unaware of Luke's and Leia's relation, or that he did not believe Leia could take Luke's place. In Revenge of the Sith, he was present when Padmé Amidala gave birth to Luke and Leia, and even helped arrange for Bail Organa to adopt Leia.
*In The Empire Strikes Back, Obi-Wan states that Jedi Grand Master Yoda taught him to be a Jedi.Star Wars: Episode V The Empire Strikes Back — Yoda: "Much anger in him, like his father." Obi-Wan Kenobi: "Was I any different when you taught me?" In The Phantom Menace, it was retconned that he was taught by Jedi Master Qui-Gon Jinn.
*In Return of the Jedi, Obi-Wan states that he decided to train Anakin to become a Jedi. This would later be reverted in The Phantom Menace, where he initially doesn't want to, but does so to fulfill the dying wish of his master, Qui-Gon Jinn
*In Return of the Jedi, Leia tells Luke that she vaguely remembers how her mother looked, - Leia: "She was very beautiful. Kind, but...sad." but in Revenge of the Sith, Padmé Amidala dies soon after giving birth to them. There has been some debate whether Leia was talking about Breha Organa, her foster mother (despite Luke specifically asked her about "real mother"), though StarWars.com stated that Leia was indeed remembering Padmé, so it is now unclear if this is canonical or not. It should be noted that when illustrator Iain McCaig was assigned to draw concept art for Breha, he gave Breha all of Amidala's traits in an attempt to explain how Leia remembered her mother's smile.The Art of Star Wars Episode III: Revenge of the Sith
*Poe Dameron and Rey met for the first time in Star Wars: The Force Awakens novelization, but then it was retconned that their first meeting was in Star Wars: Episode VIII The Last Jedi.
*Kylo Ren and Luke Skywalker both stated in Star Wars: Episode VIII The Last Jedi that Kylo had intentionally destroyed the Jedi Temple of Luke Skywalker and taken several students with him, while slaughtering the remaining students. However, The Rise of Kylo Ren 1 shows that Ben destroyed the Temple by accident and no students left to join him, only to pursue him when he fled.The Rise of Kylo Ren 1
*In the novelizations of The Force Awakens and The Last Jedi, as well as the visual dictionary for The Last Jedi, Snoke is established to be a dark side user with no connections to the Sith, who had previously seen the rise and fall of the Galactic Empire. The Rise of Skywalker instead states that Darth Sidious had created Snoke and had been directly responsible for the events that resulted in the rise of the First Order and the corruption of Ben Solo to the dark side.
==Star Wars: The Clone Wars==
The Clone Wars made many retcons to established continuity when it debuted.
*In the 2005 Revenge of the Sith novelization, Anakin says that he had only ever read about MagnaGuards before fighting them onboard the Invisible Hand. However, the season one episode "Duel of the Droids" has him fighting MagnaGuards to rescue R2-D2.
*Previous EU media had depicted Ryloth as being a tidally-locked planet with one side permanently facing its sun.Geonosis and the Outer Rim Worlds When Ryloth appeared on The Clone Wars, however, it was as a planet with a normal day/night cycle and a consequently less harsh environment.
*Clone trooper Echo's designation number was originally given in "Clone Cadets" as CT-21-0408: although not spoken aloud, all of the members of Domino Squad had their numbers written on their training armor. Both the unfinished and final versions of the later episode "The Bad Batch" changed Echo's number to CT-1409.
*The tie-in graphic novel Shipyards of Doom involves a Republic strike team which includes Anakin Skywalker carbon-freezing themselves as an infiltration tactic.The Clone Wars: Shipyards of Doom Third-season episode "The Citadel" involves the same tactic, but has Anakin claiming never to have undergone the procedure .
*"Citadel Rescue" retconned a part of the novel Coruscant Nights I: Jedi Twilight by killing off Even Piell, who had first been depicted as dying in that novel, later in the timeline.Coruscant Nights I: Jedi Twilight
*Season four episodes "Kidnapped," "Slaves of the Republic" and "Escape from Kadavo" were adapted from the first story arc of the Star Wars: The Clone Wars monthly comic series. However, in the course of the adaptation, a large number of elements were changed:
**The comic, coming out around the same time as the first season of the show, was set early in the Clone Wars, with Ahsoka Tano as a young and inexperienced Padawan. The TV series, by season 4, had moved a few years into the war, and Ahsoka was much more experienced. This change also resulted in the removal of several characters: in the TV show, Asajj Ventress had been kicked out of the Separatists' service during season three, and clone trooper Waxer, who made a brief appearance, had been killed off in "Carnage of Krell," the episode immediately before the beginning of the arc. As a result, Boil took over Waxer's role.
**The Separatists' involvement is downplayed, with Separatist forces no longer participating in the Battle of Kadavo, and a plot thread where Count Dooku attempted to frame the Jedi for having murdered the colonists of Kiros being excised.
**Multiple characters original to the comic strip, including Onyx and his crew and Xerius Ugg, were omitted.Star Wars: The Clone Wars: Slaves of the Republic They were replaced with TV-series original character Darts D'Nar and his ship, the Tecora.
* "An Old Friend": In her entry on the original Databank, Teckla Minnau was said to have survived the Clone Wars, going on to marry a writer while serving as a handmaiden to Queen Kylantha. This episode retconned that by killing her off during the events on Scipio.
*"The Lost One": Republic 61, the events of which were dated to 22 BBY by The Essential Reader's Companion,The Essential Reader's Companion depicted former Supreme Chancellor Finis Valorum's death in a terrorist attack.Republic 61 This episode, which was dated to 20 BBY in the the original continuity, places the events of "The Lost One" in 20 BBY. depicted Valorum alive and well.
*The "Bad Batch" arc which opened the series' revived seventh season was initially released on StarWars.com as a series of unfinished story reels. The final versions of the four episodes featured multiple changes:
**The finished versions of all four episodes have different opening morals to the ones in the story reels.
**"The Bad Batch":
***The explanation Rex gives to Anakin Skywalker and Mace Windu regarding how exactly the Separatists seem to be keeping the upper hand during the Battle of Anaxes has been changed: in the story reel, he is more upfront with his theory that the presumed-dead ARC trooper Echo may still be alive, and about the existence of the strategy algorithm the Separatists are using that has led him to this conclusion. In the finished episode, he instead gives the Jedi Generals a more vague explanation, and only confides his real theory to Cody later in the barracks in a new scene as he feels the Jedi wouldn't have believed him.
***Kix has his original almost-bald hairstyle in the story reel, but in the finished episode sports a full head of hair. Similarly, Jesse's ARC trooper helmet has a rangefinder in the story reel that is absent in the finished episode.
***In the reel, Jesse makes a comment while the Bad Batch is fighting the battle droids in the canyon, wondering "Are these guys for real?" The line is gone in the final version.
**"A Distant Echo":
***The story reel includes provocative nose art of Padmé Amidala on the Marauder. The nose art is no longer present in the final release of the episode, nor is it visible in other episodes in which the shuttle makes an appearance. Instead, the scene where Anakin Skywalker objects to the nose art is replaced with a scene where he has a private holo-call with Padmé, while Rex attempts to keep Obi-Wan Kenobi from interrupting.
***Hunter's dialogue about the Marauder not being an obviously Republic ship is not present in the final version.
***The insensitive remarks Crosshair makes on Skako Minor that lead Rex to lose his temper and punch him are, in the story reel, an insinuation that Echo may have willingly gone over to the Separatists after being left for dead. In the final episode, Crosshair instead goads Rex by suggesting Echo's death was Rex's fault.
**"On the Wings of Keeradaks": The scene where Wat Tambor demonstrates the Decimator on a Poletec test subject is gone from the final episode.
**"Unfinished Business":
***In the story reel, Echo says that Trench is unaware of his rescue because Wat Tambor is too afraid of the Harch Admiral to inform him of that crucial fact. In the final episode, he instead frames Trench's ignorance as due to Tambor's greed making him loath to admit the loss.
***Gold Leader, in the story reel, is wearing the same flight suit and face-revealing helmet as the clone pilots in Revenge of the Sith. In the final version, he is instead wearing the face-concealing helmet and Phase II armor introduced for clone pilots in season 4.
***The reel version of the episode ends with a medal ceremony. In the final version, the last scene is instead Rex seeing Echo off after the latter decides to take up the Bad Batch's offer to join them.
*The four-part grand finale of The Clone Wars ("Old Friends Not Forgotten," "The Phantom Apprentice," "Shattered," "Victory and Death"), released in 2020, retcons almost all of the details about the Siege of Mandalore and Ahsoka Tano and Rex's survival of and escape from Order 66 given in the 2016 novel Ahsoka.Ahsoka
**In the novel, Ahsoka's last conversation with Anakin is him warning her about how dangerous Maul is. "Old Friends Not Forgotten" has their last conversation be them wishing each other luck and discussing the changes Anakin made to Ahsoka Tano's lightsabers. In addition, the lightsabers themselves are now blue, whereas the novel has them with their original blade colors, green and yellow-green. Editions of the novel published after the episode's release updated the description of the lightsabers to match the TV show.
**In the novel, Ahsoka owns a weapons belt that she wore during the Siege and used to hold her lightsabers. The TV series gives Ahsoka a Mandalorian-designed combat outfit that lacks a separate belt and has catches located at her hips for her to carry her weapons.
**Ahsoka's last duel with Maul during the Siege, in the novel, takes place in a plaza in Sundari. Their conversation is an exchange of insults regarding her departure from the Jedi and him only being "half" a Sith. Maul is captured when Ahsoka lures him into a ray shield that her allies activate. In "The Phantom Apprentice", conversely, their final duel takes place on the support beams of Sundari's bio-dome, and their conversation is about Maul's earlier offer to her to team up so they can defeat Darth Sidious. Ahsoka is disarmed before she captures Maul by knocking him off of a beam and suspending him in mid-air with the Force, whereupon Rex arrives with backup in several gunships. Two Mandalorian warriors then secure Maul with their wrist-cables before Rex shoots him with a stun blast.
**In the flashback of the Siege, Maul addresses Ahsoka as "Lady Tano," which is what he calls her in Star Wars Rebels episode "Twilight of the Apprentice." The novel states that Maul got the title from the clone troopers, who called Ahsoka that as a form of respect since she was no longer officially part of the Republic Military. In the episodes, conversely, the clones treat Ahsoka as if she never left, addressing her as "Commander" in reference to her former rank of Jedi Commander up until Order 66 happens. The only character referred to as "Lady" in the episodes is Bo-Katan Kryze.
**While the novel does not show the execution of Order 66 itself, it is implied that it is issued quite soon after the end of the Siege, while Ahsoka, Rex and Maul are still on Mandalore. It is hinted that Maul takes the opportunity to escape in the chaos, and Ahsoka is forced to choose between killing him or saving Rex's life, opting for the latter. While the order is given after the end of the Siege in the TV show, Ahsoka and Rex have already left Mandalore, intending to deliver the captured Maul to the Jedi Council on Coruscant, and as such they are onboard a Star Destroyer in hyperspace when it happens. Maul does not escape his confinement, but is intentionally released by Ahsoka as a diversion for the clones. Ahsoka is indeed forced to make a choice between dealing with Maul or saving Rex at the climax, but the decision with Maul is whether to let him escape in the shuttle he is stealing.
**Finally, in the novel, after escaping, Ahsoka and Rex fake their deaths to the Empire by burying another clone in Rex's armor, marking the grave with a headstone claiming that they killed each other. Having acquired two starships and having decided to split up, Rex leaves first before Ahsoka, left alone in the night, turns on her lightsabers one last time before kneeling and placing them on the gravesite to seal the deception. She then leaves as well. In the episode, the gravesite is, instead of Mandalore as implied in the novel, on a moon, where the Star Destroyer they were onboard crashed after Maul destroyed its hyperdrive. No attempt is made to create a fake grave for Rex, as he keeps his armor and he and Ahsoka instead bury the bodies of the clones who died in the crash, and no inscribed grave markers are created, as the clones' helmets on poles are used instead. Ahsoka does not abandon her weapons at night, but in the daytime, and does not abandon her lightsabers together, with her only being shown abandoning her primary weapon, not the shoto lightsaber. She does not ignite the blade, instead only briefly hesitating before dropping it on the ground. She and Rex are also implied to leave the moon together, only parting ways afterwards, as they only have one starship.
==Star Wars: The Bad Batch==
Series premiere "Aftermath" directly contradicts events depicted in the Star Wars: Kanan comic series regarding the Battle of Kaller and how Depa Billaba and Caleb Dume experienced Order 66.
*In the comic, CC-10/994 "Grey" is a Clone Commander with red armor markings and equipment including a pauldron over his right shoulder and a vibrosword on a bandolier.Kanan 1 "Aftermath" depicts him as a Clone Captain with green markings, no sword, and a pauldron over his left shoulder.
*Billaba's lightsaber goes from green in the comic to blue in the episode, following up on the reference book Star Wars: The Lightsaber Collection.Star Wars: The Lightsaber Collection The blue color originated from concept art created for Star Wars: The Clone Wars prior to the series' initial cancellation.
*In Kanan, Commander Grey and Captain Styles attack Billaba and Dume at a campground at night on Kaller after the Separatists have surrendered Kaller to the Republic. Grey responds to the order with "Yes, my Lord." Billaba and Dume fight together until Billaba orders Dume to run while she is shot down. Afterwards, he is hunted in the forest by Rostu Squad.Kanan 2 "Aftermath" has Dume separated from Billaba during the daytime in the immediate aftermath of a battle as he follows Clone Force 99. At this point, Captain Grey receives Order 66 and, saying nothing in response, attacks Billaba with his men. Dume runs back towards his Master, but, after being told to run, escapes into the forest and is followed by Clone Sergeant Hunter and Crosshair. The latter attacks Dume, while Hunter attempts to help him. Dume eventually escapes by leaping over a small canyon.
*Kanan has Dume use his Jedi cloak to conceal his identity while evading clone forces. "Aftermath" shows him losing it in the woods while being followed by members of the Bad Batch.
==Andor==
*Star Wars: Rogue One: The Ultimate Visual Guide states that Cassian Andor was born on the planet Fest.Star Wars: Rogue One: The Ultimate Visual Guide However, in the first episode of Andor, "Kassa", it is revealed that Cassian was actually born on the planet Kenari. This discrepancy would later be explained in the next episode, "That Would Be Me", as Fest being an in-universe fabricated false birthplace created by his adoptive mother Maarva Andor to hide his Kenari origins.
==Star Wars Legends==
*In one 1978 series of strips that was later titled The Constancia Affair, Luke Skywalker's parents were called "Master and Mistress Tan Skywalker." At the time, the Expanded Universe was in its early stages, and nobody knew what the name of Luke's father was going to be, save that the two probably shared the surname Skywalker. The given name "Anakin" was only revealed in the 1983 movie Star Wars: Episode VI Return of the Jedi, five years after the release of The Constantia Affair. The name "Tan" was later retconned into a title-rank that was bestowed to exceptionally skilled pilots.
*The novelization of Return of the Jedi mentions that the planet Endor no longer exists, but the planet Endor appears in the film and in Star Wars Legends sources, so The Essential Atlas retconned the claim in the novelization of Return of the Jedi into being a hoax.
*The Ewoks tv series shows the Endor system to be a binary star system, but all other appearances show the Endor system to only have one star, so the StarWars.com Databank entry for Endor retconned the Ewoks tv series to be showing Ewok mythology.
*Since A New Hope, the Republic was known to have fought the Clone Wars, and the Expanded Universe (EU) added several other conflicts, such as the Great Sith War; but in Attack of the Clones, Sio Bibble stated that "there hasn't been a full-scale war since the formation of the Republic." The above-mentioned Ruusan Reformation also handled this discrepancy.
*In the novelization of Return of the Jedi, it's said that Darth Vader fell into a pool of lava. In Revenge of the Sith, Anakin doesn't actually touch the lava, but the fumes were hot enough to set fire on his clothes. More than a retcon, this idea was most likely altered in order to make Anakin's survival more plausible. In addition, it's revealed that Obi-Wan Kenobi and Owen Lars were brothers, though in Attack of the Clones it's shown that they were unrelated (coincidentally, in real-world, Nash Edgerton, Joel Edgerton's (young Owen Lars) brother, doubled Ewan McGregor (young Obi-Wan) and that Palpatine was loved by the Coruscanti (which was further supported by the sourcebook Coruscant and the Core Worlds and its statement that the populace specifically viewed Palpatine as a virtual demigod), while in the Special Edition of the film, it's shown that Coruscant celebrated Palpatine's death, even bringing down a statue of his.
*Heir to the Empire established that the name of the Imperial capital planet is Coruscant, but in The Truce at Bakura, characters refer to it as Imperial Center, so Shadows of the Empire explained that the name Imperial Center was what the Empire designated Coruscant.
*The Coruscant Uprising, and the brutality with which the Empire suppressed it, retcons the hopeful tone of the post-Endor celebrations on Coruscant seen in the special edition of Return of the Jedi with the fact that the planet would not be freed from Imperial rule for another two years.
*In the Dark Empire trilogy, it's mentioned that Palpatine's clone bodies rapidly decay because they're overwhelmed by his essence moving into them, but Crimson Empire revealed that Carnor Jax bribed Palpatine's physician to make Palpatine's clone bodies rapidly decay.
*The Essential Chronology retconned Lumiya and Arden Lyn to be Emperor's Hands and The Emperor's Pawns did the same for Blackhole and Jeng Droga.
*Tales of the Jedi – The Golden Age of the Sith 0 established that the Sith existed long before 5000 BBY, but the novelization of The Phantom Menace, which is set in 32 BBY, says that "the Sith had come into being almost two thousand years ago". The Essential Chronology retconned the novelization of The Phantom Menace to refer to the founding of the New Sith.
*In The Phantom Menace, Yoda mentions the Rule of Two, but The Essential Chronology established that Darth Bane created the Rule of Two after the Sith were seemingly wiped out in 1000 BBY. Evil Never Dies: The Sith Dynasties explained that Kibh Jeen discovered the Order of the Sith Lords and told the Jedi about them, but the Jedi dismissed him as insane.
*Dark Forces: Rebel Agent and Dark Forces: Jedi Knight don't mention the Brotherhood of Darkness having anything to do with the Sith, but The Essential Chronology revealed the Brotherhood of Darkness to be what the New Sith became at the end of the New Sith Wars and the Seventh Battle of Ruusan to be the event that lead the Jedi to think that the Sith were extinct until the events of The Phantom Menace.
*Dark Forces: Rebel Agent and Dark Forces: Jedi Knight established that the spirits of the victims of the thought bomb were trapped on Ruusan until the arrival of Kyle Katarn, but in Bane of the Sith, Darth Bane sees ghosts of Qordis and Kaan on Dxun. Darth Bane: Rule of Two retconned the ghosts on Dxun into being hallucinations resulting from the thought bomb damaging Darth Bane's brain.
*In Bane of the Sith, Darth Bane remembers warning Kaan not to use a thought bomb, but in Darth Bane: Path of Destruction, Darth Bane gives Kaan the idea to use a thought bomb.
*The name of the Republic's leader was for many years the President of the RepublicStar Wars Episode IV: A New Hope novelization or the President of the Galactic Senate;Star Wars: The Visual Dictionary when the prequels revealed the title to be the Supreme Chancellor, the term "President of the Senate" was retconned to be one of the Chancellor's several official titles (some say that this was the title before the Reformation).
*In the Jedi Prince series, Bertroff Hissa, Trioculus, and Kadann were trying to steal power away from Ysanne Isard. Isard is never mentioned in the series—in fact, it's frequently implied that there is no Imperial leader other than Trioculus—but this retcon was created to fit the series into the established timeline.
*The Dark Side Sourcebook retconned the Prophets of the Dark Side seen in the Jedi Prince series to be imposters of the true Prophets of the Dark Side.
*The EU established that Raith Sienar gave Tarkin the designs for the Death Star, and that Bevel Lemelisk developed the superlaser; after Episode II revealed that the Geonosians gave the plans to Tyranus/Sidious, it was retconned that the Geonosians developed the details based on outlines given to them by Sienar and Lemelisk. Indeed, the history of the Death Star has become so convoluted that a novel was created on this topic. The novel was, in effect, one large retcon.
*The show Star Wars: Droids: The Adventures of R2-D2 and C-3PO showed C-3PO and R2-D2 having several adventures in the time between the rise of the Empire and Episode IV; after the release of Episode III showed them to be in the employ of the same people they are with in Episode IV, it has been retconned that the two droids somehow were separated from their owners because of Corla Metonae after Episode III, then returned to them sometime before Episode IV.
*While A-wings are not supposed to exist before the Battle of Yavin, they appear in the Droids series, which happens between the two trilogies. The identical R-22 Spearhead was then "invented" as a predecessor of the A-wing, in order to explain the appearance of such ships in the Droids era.
*The title Darth was supposed to be invented in the period of the New Sith Wars until the game Knights of the Old Republic introduced Darth Revan and Darth Malak, who lived 2,000 years before the beginning of the aforementioned period. It is generally assumed that the title was forgotten sometime between, so the tradition was lost. The first Sith Lord to use the title Darth in the New Sith Wars era also constantly shifted into the past: first it was thought to be Darth Bane, then Darth Rivan, and later Darth Ruin.
*Timothy Zahn, in Star Wars: The Thrawn Trilogy, cast the Clone Masters as the opponents of the Galactic Republic in the Clone Wars, as several authors of the '90s considered that the cloners and their clones were the "villains." However, after Attack of the Clones revealed the clones were on the Republic's side, the Clone Masters were retconned into being renegades who did not attack until after the formation of the Empire.
*The Confederacy of Independent Systems' use of Morgukai clones during the Siege of Saleucami, shown in the Star Wars: Republic storyline of the same name, and a young Gilad Pellaeon's presence among the Republic forces, explains Pellaeon's claim in Heir to the Empire (part one of the aforementioned Thrawn trilogy) to have battled unstable clones during the Clone Wars many years before.
*The BBY system used in many sources to represent dates in the Star Wars timeline is itself a retcon. It originated as an out-of-universe dating system and, after becoming popular, was retconned into an in-universe system used by the New Republic, et al.
*According to their first back-story written in The Star Wars Sourcebook, the Mon Calamari and the Quarren had their first contact with offworlders when the Galactic Empire discovered their world. This generated continuity problems when Quarren appeared as background aliens in Episode I, and when the Mon Calamari Padawan Bant Eerin appeared in the Jedi Apprentice series. The idea that the Mon Calamari's conflict with the Empire was their first experience with offworlders was retconned away when they appeared as loyal members of the Galactic Republic in Star Wars: Clone Wars. Geonosis and the Outer Rim Worlds explained these previous references as Imperial propaganda.
*Little Kessel was created for The Essential Atlas to confirm that the lush, idyllic "Kessel" seen in The Second Kessel Run and the "regular" Kessel—a desolate, misshapen world unpleasant enough to serve as an in-universe synonym for Hell—are not the same planet.
*The Last One Standing: The Tale of Boba Fett implied that Jaster Mereel was the real name of Boba Fett. However, Attack of the Clones revealed that Boba was a clone of his "father", Jango Fett, so Jango Fett: Open Seasons retconned Jaster Mereel into a separate character, Jango's mentor and predecessor as Mandalore. Star Wars Gamer 10's entry for State of the Arts explained that Boba used "Jaster Mereel" as an alias.
*As revealed in the comic book Star Wars 68, Boba Fett was believed to have served with a group of Mandalorian supercommandos called the Mandalorian Protectors towards the end of the Clone Wars. According to Fenn Shysa, only three survived: himself, Fett, and Tobbi Dala. However, The History of the Mandalorians retconned this "Boba Fett" into not being Boba Fett, but rather a rogue ARC trooper named Spar who had become obsessed with returning the Mandalorians to their former glory.
*The rumor mentioned in The History of the Mandalorians that the renegade clone Spar was in fact Jango Fett's son rationalizes Fenn Shysa's claim that, during the Clone Wars, he and the Mandalorian Protectors had served under Boba Fett - who was later shown to have been only 13 at the end of the conflict.
*The History of the Mandalorians retconned Boba Fett's appearances in Star Wars: Young Jedi Knights into being appearances of his daughter, Ailyn Vel.
*Stormtroopers during the Galactic Civil War were rarely indicated to be clones before Attack of the Clones was released, except in the article Soldiers of the Empire!. Additionally, multiple Expanded Universe sources mentioned normal human stormtroopers (such as Davin Felth and Kyle Katarn) and showed the existence of Imperial academies (such as Carida) which trained normal humans to be stormtroopers. Large numbers of clones were later retconned into the stormtrooper ranks. Star Wars: Battlefront II explained that, following the Kamino uprising, clones of people other than Jango Fett and non-clone humans began to be recruited to be stormtroopers, although the 501st Legion continued to be composed entirely of Jango Fett clones as late as the Battle of Endor.
*The Phase Zero dark troopers—aging and wounded Clone Wars veterans essentially turned into cyborgs—explain how, while the Empire's first use of them did not occur until after the Battle of Yavin, the Battlefront games include "Dark troopers" in the Imperial arsenal as early as 18 BBY.
*The novel I, Jedi places Corran Horn at the Jedi Praxeum during the events of The Jedi Academy Trilogy, and also fine-tunes some of the events of the trilogy to fit later canon.
*In the Return of the Jedi novelization, Obi-Wan Kenobi refers to Owen Lars as his brother, and in Jedi Apprentice: The Hidden Past, Obi-Wan has a vision in which he has a brother named Owen. Attack of the Clones established that Owen Lars has no relation to Obi-Wan, so Lone Wolf: A Tale of Obi-Wan and Luke retconned Owen Kenobi into a vision symbolizing that Obi-Wan and Owen Lars would work together to raise Luke Skywalker.
*The Dark Jedi Jerec wears a blindfold. The New Essential Guide to Characters referred to Jerec as a human who was blind since birth. However, sources published more recently have retconned him as a member of the eyeless species Miraluka.
*Although the 2002 video game Star Wars: Jedi Knight II: Jedi Outcast refers to its Imperial antagonists as the "Imperial Remnant," The Dark Forces Saga, Part 6: Outcasts and Megalomaniacs Welcome retconned them into in fact being representatives of the Empire Reborn, an Imperial splinter faction first introduced in the 1994 novel The Crystal Star.The Crystal Star
*The character of Quinlan Vos was originally written by George Lucas to appear in Episode III as being one of the many Jedi who were killed during Order 66. Star Wars: Republic writers inserted the scene in the film's comic book adaptation in spite of their plans to do more stories with Vos. However, when they became aware that Lucas never filmed Vos' death scene, they retconned Vos' death to have his survive the explosion, bringing him back, albeit receiving severe burns, in Republic 82.
*In Dark Apprentice, the Massassi are described as "grayish-green", but in Tales of the Jedi – Dark Lords of the Sith 4 and all subsequent appearances, the Massassi are shown to be red-skinned.
*In Tales of the Jedi – Dark Lords of the Sith 1, it's mentioned that Naga Sadow was "a member of an elite priesthood, of pure Sith blood, who were in rebellion against their rulers, the fallen Jedi who wore the title Dark Lords of the Sith", but in Tales of the Jedi – The Sith War 4, Exar Kun refers to "the Dark Lord Naga Sadow" and in Star Wars: Tales of the Jedi – The Golden Age of the Sith, Naga Sadow is a Dark Lord of the Sith with mostly human blood.
*In Tales of the Jedi – Dark Lords of the Sith 2, it's mentioned that the Sith fled to Korriban after the Republic tried to exterminate them, but in Tales of the Jedi – The Golden Age of the Sith 2, the Sith Empire uses Korriban to bury their Dark Lords before the Republic discovers them.
*In Tales of the Jedi – The Golden Age of the Sith 0, it's mentioned that the First Great Schism lead to "a century of bloodshed" that ended with the Exiles being exiled from the known galaxy, but The New Essential Chronology revealed that it was the Second Great Schism that lead to the Hundred-Year Darkness, which it revealed to be the same event as the "century of bloodshed" mentioned in Tales of the Jedi - The Golden Age of the Sith 0.
==Notes and references==
==External links==
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