Leo Adam

**Leo Adam** known as **Ryuichi Akai** (赤井隆一, *Akai Ryuichi*?) in the Japanese version, is main protagonist of Duel Monster Series He is good at games, riddles, and puzzles, especially Duel Monsters. He is regarded as one of the most skilled and best duelist known and was respected by many other characters in the series for his exemplary style of Dueling.

He attended Duel Academy under Recommendation of Lincoln Kaiba and was put in the Slifer Red Dorm, the dorm with the least privileges and he would become the academy's best Duelist and saves the world and the academy from many threats such as the evil Kagemaru, The Light of Destruction possessed Sartorius, the deranged and manipulative Roki, and finally the malicious spirit Nightshroud. After three years, he graduates from Duel Academy

Leo was the reincarnation of The Supreme King. At the end of the third season of the GX Series, he fused his soul with Roki, his favorite card from childhood, with the use of "Super Polymerization" to purge him from the influence of The Light of Destruction. He also possesses the three-thousand-year-old (five thousand in the dub) mystical Millennium Puzzle which allows him to communicate with Duel Spirits and communicated with the Pharaoh Atem who act as his mentor and partner.

## Design

### Appearance

In the Original Series, Leo is rather short His normal outfit consists of the standard male Domino Middle School Uniform and wears the Millennium Puzzle on the lace around his pants Leo also wore Eyeshield Glass to cover his Face to avoid attention when He used Atem's Deck as the Series Progress He grows taller much more and noticeably more muscular and look more older and mature. He wore a KaibaCorp Duel Disk in the left arm

In the GX Series, Leo wore standard Slifer Red uniform, unbuttoned, and a black shirt underneath. and wore dark jeans. A Deck box is strapped above his waistline, largely hidden beneath the lower rim of his jacket. When He joined Duel Academy, he still used the KaibaCorp Duel Disk before carries an Academy-issued Duel Disk on his left arm much later after entering in the Academy.

In the 5D's Series, Leo wore a small triangle shape pendent similar shape as the millennium puzzle that was given to him by Atem at the end of GX Series and wore a Dark Blue Shirt, grey pants, a black, leather jacket, black boots

### Personality

Leo was very quiet and reserve and often exhibits aloof behavior and is serious calm and collective showing little emotion and focuses his attention towards dueling. He is very passionate about dueling and do his very best when he duels. Deep down, however, he does not wish to see the ones closest to him to suffer or get them in danger. Leo sees friends as the most valuable thing a person can have; he believes no one should ever have to be alone and tries to convince others who reject friendship that it is something to be embraced.

Leo is kind noble and heroic as He is a selfless, protective, kind-hearted and overall mostly a serious person, who deeply values the safety of humanity and his friends. Because of this, he is seen by most other characters in the show as a dependable person they can always trust. Leo also has strong charisma, able to turn former rivals into allies and friends He also a good teacher when it come to dueling and can help many Duelist to grown strong in their own right and even can make beginner Duelist becoming strong as well such example is Joey Wheeler

Leo is a good sport, and is shown to take his losses well. When he wins duels, he likewise would congratulates his opponents on putting up a good fight and He always shows respect towards his opponents, with a few exceptions, even complimenting them during a Duel.

Leo often doggedly pursues his goal such as wanted to fulfilling the Promise he made with Atem that He beat Atem in a Duel at the Eye of Wdjat so that Atem can past on to the Afterlife with his Friends or When he desperately tried to rescue Jesse and find a cure for Maya when she was bedrillen ill by Roki. Which cause him to ignoring the concern of others and inadvertently causing distress and further concern among those that care for him.

Leo is rather a bit dense when it comes to love or romantic subjects though not completely dense on the subject many females characters how to develop attraction or a crush on him throughout the series though Leo doesn't notice this probably due to focus mostly on dueling. Though Leo himself stated that He not interesting in Dating and shown to dislike Girls often hogging on him and would bluntly reject them and express his annoyance, However, Leo is romantically inexperienced, appearing somewhat shy and even naive about the topic He became shy when he was forced to go on a date with Tea by his Grandfather though he can keep his own emotion under control even when the subject is brought up and he rarely get flustered from the subject.

After His Ordeal against Roki, He became cold and cynical and became relevantly emotionless He finds himself unable to enjoy Dueling no longer show much happiness to most of his victories and consider the duels he engaging now as boring and attempts to end his Duels as quickly as possible. Despite still caring deeply for his friends, he is much more distant towards them, not wanting them to be hurt by the danger his presence tends to attract. He begins to recover his passion of Dueling during the Pair Duel tournament and fully recovers when Facing Atem again in a Duel.

### Abilities

Leo is shown to be highly technical when it comes to computers and machines, able to build and program seemingly anything as he was to build his own Duel Cycle from scrap parts, twice, and how he jamming the bangle on Rally Dawson. Along with the ability to construct one, he is also shown to be an expert at riding a Duel Runner, evidenced numerous times throughout his Duels.

Leo has the power to see and hear Duel Monster spirits and control them. This is the main power that is used by the Supreme King. Leo can use it to materialize Duel Monsters and their powers. After the events in the Dimension World arc, Leo now has the power of Roki and the Supreme King inside him. When he materializes his Duel Monsters, he can make them even stronger. Roki's power allows him to sense people's thoughts and emotions, see visions of the future, and protects him from other supernatural powers, like hypnosis and Nightshroud's influence. Roki's powers also let him quickly figure out that Honest was masquerading as Fujiwara. Leo's eyes take the same color as Roki's or the Supreme King when manifesting either of their abilities. He is also able to project his voice out for people in yonder reach to hear, as shown in the final Duel with Nightshroud.

Leo can cooked having to cooked for his family friends and fellow Dorm mates in the Slifer Dorm many times

Leo also has incredible athletic abilities After he fused Roki's soul with his own, his athletic ability has shown to have increased. He was seen jumping on platforms with relative ease

Leo is highly skilled Duelist and is enable descern the Best of any Card he currently have accessed to

### Etymology

Leo's Japanese name Ryuichi means Dragon and One

## Biography

### History

Leo was born in the Tops area of New Domino City. His parents were lead developers for the Ener-D Reactor. As Roman Goodwin was about to cause Zero Reverse was about to take place, Leo's father placed Leo in an escape pod to save him from the explosion, while Leo's parents died.

Leo's escape pod landed in the newly created Satellite area, sometime later he was taken to Martha orphanage where he grew up with and befriended Dylan Atlas Conner Blake and Mack Hangan. Growing up, Leo became interested in Duel Monsters since he was young Leo also became friends with Kalin Kessler sometime later when Leo was Six one of his living relatives his grandfather came to get him and move to New Domino City He also took Dylan and Conner along with him while Mack was taken by his Single Mother Eva Hangan

When Leo enter elementary school he was befriended by Tea Gardener.

### GX Series

#### Seven Stars

Leo was late due to his Duel Cycle broke down resulted in him running to take his entrance exam in order to enroll in Duel Academy and make it to the test center in time, When he arrived with Mack and Conner passed the Exam the head teacher at Duel Academy, Dr. Crowler, was hesitant to allow Leo to take his exam, but a phone call from his superior, Chancellor Sheppard changed his mind. Crowler Dueled Leo himself and disregarded the rule that he is to use an exam Deck, instead of using his personal Deck. Leo is able to hold off its attack with "Winged Kuriboh," whose spirit he is capable of seeing and communicating with, something that most people would not be able to do. He proceeds to the duel with a numbers of combos and win the Duel using Winged Flame Dragonoid and Storm Field

Leo is accepted into Duel Academy and is placed in the Slifer Red dorm, which is the lowest-ranked of the three dorms. Leo became roommates with Conner and Mack and became roommates with Syrus Truesdale and Chumley Huffington.

Leo later has a confrontation with Chazz Princeton, an Obelisk Blue student who had witnessed Crowler's defeat to Leo. Believing his victory to be a fluke, Chazz challenged Leo to a Duel, which is interrupted midway through. Though Chazz believed he would have won, Leo had just drawn a card that would win him the Duel.

Dr. Crowler, eager to exact his revenge on Leo, began plans to get him expelled. He placed a fake love note in Leo's gym locker, on which he had forged the signature of Alexis Rhodes, one of the top female students. Mack and Syrus found the note instead of Leo, and the two of them rowed across the lake to the girl's dorm. Leo followed and saved Syrus and Mack from expulsion by defeating Alexis in a Duel.

The owner of Duel Academy's card shop, Ms. Dorothy, gifted Leo with some rare cards after he helped her push her van up the hill when it stalled. In Duel Academy's promotion exams, Leo had his rematch with Chazz, who had been supplied powerful cards by Dr. Crowler. Leo's use of "Transcendent Wings" to evolve "Winged Kuriboh" to level ten won him the Duel, and he is therefore allowed to move up to the Ra Yellow dorm but he declined the opportunity.

Crowler's crusade against Leo continued, with him sending Titan, a self-proclaimed "Shadow Duelist" to defeat Jaden. Titan used illusions to make it appear he had the ability to start Shadow Duels. Leo was skeptical throughout the whole Duel, and is proven correct - it was a sham. They're Duel in the Abandoned Dorm and the spirits of the dorm are angered by Titan. A real Shadow Duel actually did begin - with Leo realizing that this now become a shadow duel when he is saved by Winged Kuriboh.

Due to their trespass at the Abandoned Dorm, both Leo and Syrus were nearly expelled. They got a chance to stay by participating in a Tag Duel. Should they win, their records would be cleared. Leo Dueled Syrus as practice for the latter and Leo defeated him. Finding that Syrus had confidence problems, he is then told by Alexis that they stem from Syrus' relationship with his older brother, Zane, who is known as the best Duelist at the academy. Determined to help Syrus and to see how he ranks against the best, Leo challenged Zane to a Duel. Though the latter compliments Leo's abilities, Leo suffers his first loss since arriving at the academy, losing to Zane's "Cyber End Dragon." Despite this, it is enough to spur Syrus' confidence. The two were unable to function as a team in their Duel against the Paradox Brothers at first due to Syrus self-confidence, but pulled things together in the end, allowing them to stay at the academy.

Leo developed a friendship and rivalry with Bastion Misawa. Both had expressed a desire to Duel one another since witnessing their respective entrance exams. After Bastion's victory with a Duel against Chazz, he was offered a promotion to Obelisk Blue but declines, stating he will not enter it until he becomes the best student in the freshman class. To do so, he believes he needs to defeat Leo. However, he does not wish to Duel him right away, as he wished to develop a Deck specifically to counter Leo's.

Leo stayed at Duel Academy during winter break, finding himself in a life-threatening Duel with the spirit of the "Jinzo" card. Leo felt real pain as his Life Points decreased, and his body parts fade as he is attacked. Though he wins, he gets his first taste of a Shadow Duel since then

Leo then found himself in a Duel over the affections of Alexis against the captain of Duel Academy's tennis team, Harrington Rosewood. Harrington gets an early lead during the Duel with his "Ace" cards. After Leo deals major damage to him via direct attacks, he then activates "Deuce" and almost wins with its effect, but Leo was able to save himself win the Duel, becoming Alexis' fiancee as per the terms that Harrington set. Leo, however, show no interest in the term that Harrington had set and He and Alexis agreed that they just remain friends

Leo got an opportunity to Duel against the Atem's deck when the said Deck went on tour at Duel Academy. A copycat Duelist named Dimitri stole the Deck and Leo Dueled him to get it back. Leo successfully defeated Dimitri with "Flame Wing Dragonoid," recovering the Deck. Leo is nominated by Zane to be the academy's representative against North Academy, with Chancellor Sheppard accepting it. Crowler nominated Bastion in response, and he proposed the two of them Duel in order to decide who the representative would be. Bastion claims that he's nearly finished his Deck that will counter Leo's strategy. Jaden gained an early advantage in the Duel but is set back when Bastion negated "Polymerization" with "Cursed Seal of the Forbidden Spell", preventing Leo from Fusion Summoning in the usual way. Leo is forced to play defensively as Bastion's "Water Dragon" and "Hyozanryu" destroyed his monsters. Leo unveiled his Warrius card on the Field Using it and "Double Vouge" Leo won the Duel via effect damage. Bastion then promised to create another Deck to challenge Leo again someday.

Leo found his rivalry with Chazz renewed when the latter returned to Duel Academy as the representative of North Academy. Leo overheard an outburst of Chazz's, in which he expressed dislike for the burden his brothers put on him to win. Chazz unveils new "Armed Dragon" cards which prove to be more effective against Leo than his previous Decks had been.

Leo is surprised to discover that Chazz has gained a Spirit Partner in Ojama Yellow and that Chazz can see Duel Spirits as well. Leo won using a strategy involving Synchro Monster and utilized Synchro summoning to win. Chazz's brothers berate him after the Duel, and Leo steps in to defend him. Chazz decided to remain at Duel Academy afterward.

The Slifer Red dorm head and alchemy professor, Lyman Banner, held a hike and picnic to the ruins that exist on the island. Leo, Mack Syrus, Conner Chumley Emily Chloe, and Alexis attended. While there, they appear to be transported to the past, to a time when the ruins were still in use. Leo's friends were captured, but Leo himself is saved by Yasmin. He eventually ends up in a Duel against Gravekeeper's Chief, in which he and his friends will be buried alive if he loses. He found that the pain he experiences from losing Life Points to be real. Leo narrowly defeated the Chief by using the effect of his "Titanic" to Summon "Junk Synchron". The Chief gifted Leo with one half of a Shadow Charm pendant after the Duel, stating that it should help protect him in any further Shadow Duels he may participate in. The group is returned to their own time.

Chancellor Sheppard selected Leo as one of the seven Duelists to hold the Spirit Keys. These keys unseal the Spirit Gates, behind which the Sacred Beast cards are sealed. The legend goes that if the cards are released, a catastrophe will occur. A group of individuals known as the Shadow Riders will arrive and attempt to steal the keys. Leo decides to prepare himself to face the Shadow Rider who might target him for the key. Conner and Alexis believed Leo will be first, as his Slifer Red uniform marks him as a weaker Duelist. In attempting to warn Leo of this, she is transported to the volcano with Leo, where the first Shadow Rider, Nightshroud, awaits. As it turns out, he targeted Leo for neither of the previously given reasons - he did so because he owns the other half of the Shadow Charm pendant, which pointed him in Leo's direction. Mack Syrus and Chumley are taken hostage, so Leo accepted the Shadow Duel, in which the loser's soul will be sealed in a card. Nightshroud gained an early advantage by combining "Red-Eyes Black Dragon" and "Inferno Fire Blast". Leo made a comeback, but Nightshroud unveils "Red-Eyes Darkness Dragon". Leo narrowly avoided defeat by Summoning "Warrius". Nightshroud's soul was sealed in the card, but he remains barely conscious, as Nightshroud was controlling someone else - the brother of Alexis, Atticus Rhodes.

Left weak from his Duel with Nightshroud, Leo watched from the sidelines as Dr. Crowler is defeated by the second Shadow Rider, the vampire known as Camula, having his soul sealed in a doll in the process. He then also witnessed Zane who meets the same fate when Camula threatens Syrus' soul. Enraged by the fall of his friends, Leo challenged Camula after Atticus informed him that his complete Shadow Charm may be able to negate the power of Camula's and prevent souls from being stolen during the Duel. This turned out to be true, as Camula is forced to use her own soul as a cost in the activation of "Illusion Gate," rather than a spectator's as she had against Zane. Leo was able to defeat her with "Aero Flare Dragonoid," who gains ATK for each fallen "Mythical type Monster" in the Graveyard. With this, Camula's soul was taken by "Illusion Gate" and the souls of Crowler and Zane were restored.

Leo's next opponent was Abidos the Third, an ancient pharaoh revived by the Shadow Riders who was once known as the "God of Duels." Leo defeated him with fewer problems than expected, and Abidos realized that his servants had always let him win. Abidos is impressed by Leo's Dueling and returns to the afterlife, with Leo promising to meet him there when he dies so that they can Duel again. Conner Alexis and Chazz successfully defeated Shadow Riders Night Warrior Titan and Don Zaloog, respectively. After that, only one Shadow Rider remaining. During this time, Professor Banner disappeared, and both Chazz and Alexis are defeated by the final Shadow Rider. Leo confronts him in the basement of the Abandoned Dorm. He eventually revealed himself as Professor Banner. He stated that Leo must prove himself as the "ultimate alchemist", comparing Leo's process of Leo "Polymerization" to fuse monsters to be similar to alchemic processes. Banner explained that he came down with an illness after traveling the world in the name of alchemy, and was forced to entrust his soul to a homunculus in order to survive. Wishing to pay back the one who funded his research, he aimed to obtain the Sacred Beasts. Banner is eventually defeated when Leo countered the latter's removed from play strategy with "Aerogan." Banner left his Emerald Tablet Shadow Charm to Jaden, warning him of the impending disaster that the Sacred Beasts will bring about.

After Chazz's Duel against Alexis, Leo witnessed the Spirit Gates open, without the aide of the Spirit Keys, which Chazz currently had. The keys led them to the gates, at which point the keys disappeared into the seven pillars surrounding the area. The ground quaked, and a black box rose from the center of the gates, inside of which was a smaller, box that contains the Sacred Beasts. The true mastermind of the ploy revealed himself - Kagemaru, the elderly Chairman of Duel Academy. He intends to use the powers of the Beasts to restore his own youth. He specifically challenged Leo to a Duel in favor of the rest of the gathered students and teachers. Leo found "Sabatiel - The Philosopher's Stone" inside the Emerald Tablet, and places it in his Deck. From within a life support tube supported by a spider-walker, Kagemaru Duels Leo. Kagemaru Summoned "Uria, Lord of Searing Flames" and "Hamon, Lord of Striking Thunder," which drove Leo into a corner. With two Beasts present, they began to absorb energy from card spirits around the world, which was then used to restore Kagemaru's youth. He appears as a young man once more and continued the Duel. Using a series of Spell and Trap Cards, Leo destroyed both of the Beasts with "Croaninja." Kagemaru was able to revive them, however, and further Summoned the third Beast - "Raviel, Lord of Phantasms." Jaden used the "Sabatiel the philosopher's stone" card to his advantage and was able to pentuple the ATK of "Luminus" to win the Duel. The power absorbed is returned to the Duel Spirits, and Kagemaru became elderly once more. He begged for forgiveness, and Leo forgave him, before telling him to try to stand on his own.

Leo was present at Chumley's Duel with Dr. Crowler, and supported his friend before he departed to become a card designer for Industrial Illusions. Leo is then chosen by Zane to be the latter's final opponent before his graduation, in a match that the whole school will attend. Leo accepted the Duel. Both Duelists were able to counter the strategies of the other, and Duel ultimately ended in a DRAW as the crowd applauded the spectacle.

#### Turbo Dueling Grand Prix Tournament

Leo Began his Second Year in Duel Academy He meeted the New Headmaster of the Slifer Red Dorm replacing Professor Banner Anthony Rorke who was former Pro Turbo Duelist Rorke notice Leo's Knowledge about Turbo Duels challenge him to a Turbo Duel but couldn't face him because he doesn't have his Duel Cycle with him so Rorke decide to observe Leo skilled as Duelist in normal duel and Leo won afterward Lincoln arrive congratulated Leo for his Victory He soon revealed that Leo's Duel Cycle is upgraded into Duel Runner since Leo is now at the Legal Age to use a Duel Runner Lincoln also stated the two of them will have their Duel in Newly made Duel Area specifically for Turbo Dueling since Lincoln desire to show a destromation for Turbo Dueling for the Academy for long time both Leo and Professor Rorke accept the term

A few days later, Leo Conner Syrus and Mack are walking through the woods. Crowler give them a task deliver 14 new Duel Disks to students who had lost theirs. Leo wonders why so many people were losing their Disks, and Syrus explains it's because of a bully that is challenging them to Duels and then taking them. Syrus had lost to this bully as well, so Leo decides it's time to confront this guy and get the disks back. They run to river, and standing on the bridge is the bully,Tyranno Hassleberry, the same Ra Yellow student that was picking on Crowler and Bonaparte when he arrived at the school. He tries to intimidate Leo with his strength, but Leo was unphase by this and challenges him to a Duel. Hassleberry also has a bunch of other Ra Yellows who support him like an army troop. They and Syrus watch the Duel, and Leo states that if he wins, Hassleberry has to give all the Duel Disks he stole back. Although Hassleberry fights admirably, he still loses to Leo's combo of fusing "Hawktor" and "Warrius" with "Polymerization" to Fusion Summon "Winged Warrius" and in the end, using "De-Fusion" to separate them back. After the Duel, Hassleberry agrees to give back the Duel Disks. Later that night, Hassleberry moves to the Slifer dorm, having decided to live in the dorm because he feels that he could learn a lot about Dueling from Leo.

After the Turbo Dueling Grand Prix Tournament Leo meet a New Student named Aster Phoenix. Unaware of new student Aster Phoenix's status, Leo Duels him and won Ms. Dorothy reveals that Aster constructed the Deck out of eight packs of cards he purchased that morning. Aster leaves after being defeated. Later, after the Duel, Syrus Truesdale realizes who Aster really was, and Leo want to have a rematch with Aster when the latter is using his true Deck.

#### Society of Light

Sometime later, Leo has just recently finished a Duel with Bastion Misawa in the Duel Arena, using "Aero Flare Dragonoid" to destroy "Water Dragon" to get the win. That night, the group gathers inside the Slifer Red dorm to watch Zane Truesdale's next Pro League match. Finding out that Zane's opponent will be Aster Phoenix, Leo is eager to see what Aster's actual Deck consists of. To everyone's surprise including Zane's, Aster reveals that his Deck has an "Mythical Monsters and Elemental Hero" theme, similar to Leo and Mack's. However, when Aster fuses "Hawktor" and "Dragonoid", he does not Fusion Summon "Flame Winged Dragonoid", but "Phoenix Dragon Enforcer". To his friends' amazement. Aster counters nearly every move Zane makes and even causes him to take damage from "Power Bond". The Duel ultimately ends with Aster the winner, much to the shock of all of Duel Academy.

Aster Phoenix holds a press conference after his defeat of Zane Truesdale in the Pro League. He issues a challenge to Leo Adam. knowing that both of them play "Mythical Monsters" He states he'll be coming to Duel Academy tomorrow. Aster meets with his manager, Sartorius. Aster doesn't seem to have any real interest in Dueling Leo, but is doing so once more on Sartorius' advice. Aster arrives that night by skysurfing. Aster thwarts the escape of a man who was robbing Duel Academy's card shop.

He appears to be looking for a certain card and when he does not find it, he tosses the man's cards causally on the ground. The Duel begins and Aster Summons "Aero Phoenix Dragon Enforcer" while Leo Summons " Aero Flare Dragonoid". Aster uses a strange Field Spell Card called "Clock Tower Prison", which appears to turn its hands each turn and do nothing else. Aster plays "D - Time" and Special Summons "Destiny Hero - Doom Lord", a monster that no one in the crowd is familiar with. Its effect removes "Aero Flare Wingman" from play.

Aster unveils his "Destiny Heroes and his Destiny Monsters" and Leo's "Mythical Monsters" can't seem to compete. Despite the Mythical Monster and "Destiny Heroes" relatively low attack points, their effects push Leo into a corner, as Aster uses "Misfortune" to deal damage while continuing to place Clock Counters on "Clock Tower Prison". On the turn that the fourth Clock Counter is placed, Leo would be able to deal enough damage to win. However, "Clock Tower Prison" renders Aster immune to damage when it has enough Counters. Leo plays "Fusion Gate" and because "Clock Tower Prison" was destroyed, Aster can Summon his ultimate monster - "Destiny Hero - Dreadmaster", whose ATK are equal to the sum of the attack points of the other "Destiny Heroes" on the Field.

Aster explains his past. His father was a card designer for Industrial Illusions, who designed the "Destiny Heroes" himself. One day, Aster came home to find his father missing. The person who did it also took one of the "Destiny Hero" cards, which was known to be the most powerful among them. Aster's vigilante activity is centered around stopping crime to find the person who took his father from him, as he would be able to identify them by their possession of the stolen card. His "Dreadmaster" negates the effect of Leo's "Electrovire" and wins Aster the Duel with its attack. Leo falls to the ground, his cards flying about, and they turn blank as he falls.

After Leo's loss to Aster Phoenix, he claims he can't see his cards and they're blank. However this appears to be how Leo sees his Deck as everyone else sees nothing wrong with his cards. Everyone, Syrus Truesdale the most, is worried about it. Leo ultimately decided to leave Duel Academy to figure out what wrong. Leo was riding at his Duel Runner when a comet hits. Afterwards, he is transported into Vestroia a Duel Monster Spirit World that is the home of Mythical Monsters that represents and protects the delicate balance between Light and Darkness. Within this Leo is currently at a Area called the Riverlands he then meets a Cards similar to Croaninja who later Transform into Super Croaninja who is a Duel Monsters Spirit like Croaninja and his other Mythical Monster who explains that "the Gentle Darkness" is in danger of being obliterated by a mysterious "Dark Light", and only Leo is able to fight off this entity and save the universe.

Just then, an unusual Duel Robot sent by this "Dark Light" arrives, and Leo must defeat it in a Duel, using cards salvaged from a satellite. He's shocked when he can see the cards he's holding, and even more shocked when he discovers that the cards were contained within a KaibaCorp satellite, which was carrying cards he'd designed for a contest held by Lincoln Kaiba years ago, and Leo figures out that he was the winner.

After winning the Duel, Leo rediscovers his passion for Dueling and regains his resolve, and then sets out to return to Duel Academy and stop this mysterious "Light" but notice his return to Duel Academy will be a Long Trip as he is currently somewhere outside of New Domino City and realize that He is in the Satellite District Leo meet up with some old friends in the Satellite and he had them help to figure out a way return to New Domino City while Returning to Duel Academy Leo began recall many events that went through and determine to stop the dangers ahead

A few days later, Alexis Rhodes is set to Duel Aster Phoenix. The fate of the Slifer Red dorm hangs in the balance. If Aster wins, then it will be demolished. If Alexis wins the dorm remains. Vice-Chancellor Bonaparte is confident that Aster will win, being Pro League Duelist. Leo finally makes it back to Duel Academy and is lead by a light into a cave. He meets another new "Mythical type Duel Spirit" there, and then hurries to the Academy.

Leo then arrived at the Arena takes Alexis' place in the Duel, stating that he has a score to settle with Aster and his rematch with Aster begins. Aster uses his "Destiny Heroes and Destiney Monsters" again, and Leo unveils Contact Fusion, which is the special ability of his new card "Altair" that can fuse with any monsters without "Polymerization". However, he was unaware that this results in the Fusion Monster returning to the Fusion Deck at the End Phase, and is reduced to 200 Life Points via direct attacks as a result.

Aster is confident he will win since Leo still learning about his new cards, but Leo refuses to give up and notes to himself, he may still has a lot to learn about his new Deck as "Aquos Altair" went back to his Fusion Deck on the End Phase without his knowledge. The two Duelists continually counter the moves of the other, revealing more and more of their new Decks. Aster soon gets out "Destiny Hero - Dogma". Leo saves himself from an attack that would end the Duel, but now both players are down to a few Life Points. Leo is still determined that he can continue, but Aster doesn't believe so, claiming there is no monster in Leo's Deck that can help him. Leo states that may have been the case with his old Deck, but it won't be with his new one. He decides to prove so by showing Aster a brand new monster in his Deck stating that He won't loose this time. Leo then plays "Mythical Space", which lets his "Altair" Fusion Monsters remain on the field past the End Phase, and Summons "Pyro Altair". Leo attacks, but Aster quickly plays "D - Shield" to save himself. Aster then proceeds to switch his "Dogma" into Attack Position and equip it with "Heavy Storm Blade". Aster attacks which surprises everyone, however doing so activates the effect of "Heavy Storm Blade", destroying every Spell and Trap on the field besides "Heavy Storm Blade". This weakens "Pyro Altair" and "Dogma" then attacks it. However the attack doesn't go through and soon enough "Heavy Storm Blade" begins to crack (which shocks Aster). Leo reveals that the set card Aster destroyed with "Heavy Storm Blade" was "Spell Calling" which allowed Leo to set two face-down cards after it was destroyed. As such the attack backfires on Aster, destroying "Dogma" and winning Leo the Duel. Due to Leo's victory, the Slifer Red Dorm remains safe. Aster congratulates Leo for his victory and Leo states he won't count their first Duel as official to make things even for both of them, but Aster doesn't mind and leaves.

A few days after Leo's Victory against Aster Phoenix, Jasmine and Mindy arrived at the Slifer Dorm and tell Leo, and the others about Chazz and Joey and the trouble he is causing at the Obelisk dorm. When they get there, the entire dorm is painted white to represent the Society of Light. Chazz is standing at the front steps, along with the other Obelisks that he turned into members by beating them in a Duel. Atticus is there and he warns them about how Chazz has become a stronger Duelist since he joined the Society. Chazz explains that the Society is run by Sartorius, who Leo remembered to be Aster Phoenix’s manager. Chazz says that Sartorius is more than that; Sartorius can help people see the light and that soon the whole world will see. When Mack believes that they were exposed to lots of white paint fumes which causes Chazz and his groupees to react in shock and embarrassment. He angrily states that they are the crazy ones. Leo wanted to challenge Chazz, but Alexis decides to do it because she feels it is right that she defend the Obelisks. Chazz and Alexis get ready to Duel in the arena, along with Leo and the others and the new members of the Society. Chazz devastates Alexis with his new combos and ultimately wins the Duel. Alexis collapses to the ground and her friends run to her side to see if she is alright. She simply gets back up and says that she has seen the light. Chazz says that soon, everyone will, and become members of the Society of Light.

Later after Joey and Chazz Duel Selene Tea Jake Ethan Melody and Athena and win brainwashed them in join Society of Light causing Leo to forbid his Friend from challenge recklessly in fear of Loosing his friend to the Society of Light but determined to bring his Friend back to Normal

A Few Days Later, Chazz chooses Lorenzo, the former world champion of the "Shooting Game" to Duel Jaden. Alexis lures Jaden to a planetarium in the white dorm, where the Duel takes place. Lorenzo plays a Boss Rush Deck and overpowers Jaden in the early stages of the Duel. He later reveals that Sartorius offered to make Lorenzo a Pro League Duelist if he could defeat Jaden. Ultimately however, he loses.

A few days later, Leo is forced into a Duel against Professional Duelist and Society of Light member Howard X Miller, who the English version calls Sartorius' lawyer. X plays a Mill Deck, and his strategy revolves around destroying his opponent's Deck and causing them to lose when they can't draw a card. Leo ultimately thwarts X's strategy using "Necroxus" and ironically wins the Duel when X himself can't draw a card.

Sartorius, Aster's manager, challenges Hassleberry to a Duel, while promising to set Chazz back to normal should Hassleberry win. The Duel goes quite evenly, with both players being reduced to only a few hundred Life Points in a few turns. Sartorius wins by using "Reversal of Fate" to change the effects of his "Arcana Force" monsters. Despite his loss, Hassleberry is not converted to the Society of Light, much to Sartorius' shock. Hassleberry explains that in the past, he had excavated some Dinosaur fossils. His leg had been injured, and so the bone had been replaced by the fossilized Dinosaur bone he had uncovered. He claims that this "Dinosaur DNA" is what grants him immunity to the powers of Sartorius. A few days later, its revealed that Sartorius has officially enrolled at Duel Academy as a student.

Leo worried how the Society of Light have brainwashed students to join them To Find away to Help his Friend defend themself from any members of the Society of Light He decide have his friends go to Duel Monsters Spirit Valley where he first acquired his Mythical Monster Deck Mack acquire Neo Spacian and a New Elemental Hero Card Neos reinforced his Deck Conner acquire new Mecha Monster Cards and new Darkus Cards reinforced his Deck Maya acquired new Magical Warriors Cards and Jasmine and Mindy acquire a Brand new Deck while Emily acquire new powerful Fairy Warriors card and Chloe acquired a New Beast Monsters cards

Duel Academy organizes a field trip sometime after Sartorius' enrollment at the academy. Dr. Crowler and Vice-Chancellor Bonaparte about where they will take the students. Sartorius and the large contingent of Obelisk Blue students that Chazz Princeton converted to the Society of Light enter the room. Sartorius wants to pick where they go, and he has most of the student population backing up his choice. Leo enters the office while accompanied by Mack Conner Maya Jaden Hassleberry, Bastion Syrus Emily Chloe Jasmine Mindy and Serenity. Leo states he also has a place to recommend for the school trip, but the Society members order him to get lost until he is smart enough to join them. Leo states he is not interesting in joining the Society and has equal chance of choosing as he is currently the the Number 1 student in the school. It's determined that Leo will Duel a Society member, with the winner being permitted to choose the trip destination (Sartorius also mentions if Leo loses then he has to promise to join the Society of Light). Sartorius chooses Princess Rose to represent the Society of Light. She claims she can see Duel Spirits and that hers are three frog princes, referencing well-known fairy tales. Leo ultimately wins the Duel, and announces that the field trip will be somewhere in New Domino City Metropolitan area, Central Downtown the site of the Battle City tournament.

Duel Academy's students arrive at New Domino City for their field trip. Leo Mack Conner Jaden Syrus and Hassleberry purchase guidebooks to visit the city's landmarks while Maya Emily Chloe Jasmine Mindy and Serenity goes shopping at Downtown Shopping District. They visit the pier where Leo begin reminiscing when He was dueling Joey as the Mask Duelist and Joey under the control of Marik Leo decide to visit his Grandfather's Shop. Conner notice that Syrus Jaden and Hassleberry is missing and goes and Leo Mack and Conner goes and find them He meet up with Maya and Emily Serenity where Chloe Jasmine and Mindy disappear as well later Leo and the other meet up with Aster and Seeing the hologram of Hassleberry's "Dark Tyranno" on top of a building, they determine that he Jaden and Syrus must be there. Frost then finds Leo, and wishes to take him to see Sarina, who Aster recognizes as Sartorius' younger sister.

Leo arrives at the hotel where the Obelisk Blue/Society of Light students are staying, and is kicked out, along with Atticus. The Slifer Red students are forced to stay at an outdoor camp, and are only supplied food when John brings them some. Blaze and T-Bone, two more of Sarina's enforcers, end up in the same camp as Leo, though they don't realize who he is. They appear to get along just fine, and Leo shares the food with them. They reveal that they themselves had once tried to enter Duel Academy, but failed the entrance exam. Despite this, they challenge Leo to a Duel. T-Bone is about to start their Duel when Sarina absorbs the soul of Blaze into one of her mirror cards while still back in her hideout. She tells T-Bone not to fail her, and forcibly places the "Monarch" cards of Blaze, Frost and Thunder into T-Bone's Deck. T-Bone uses the combined power of the "Monarchs" to Summon "Demiurge Ema", but ultimately loses when Jaden powers up "Altair" using several Spell Cards. Sarina seals T-Bone's soul in a mirror as well, and reveals she's locked Syrus Jaden Hassleberry Chloe Jasmine and Mindy in virtual pods. She states she'll be waiting at Kaiba Land for Leo and Aster Phoenix.

After making their way to Kaiba Land and the Virtual World Facility within, Leo and Aster are suddenly transported onto a digital plane, where they are reunited with Syrus Hassleberry Jaden Chloe Jasmine and Mindy who are currently trapped by and also discover that the members of the Light Brigade are trapped here. Then, Sarina appears, explaining that she is acting under the orders of her brother, Sartorius, who wishes to discover the identity of the destined Duelist who is to be his final opponent, and Sarina is to Duel either Leo or Aster to find the answer, but if Sarina's opponent loses, he must join Sartorius and the Society of Light. Jaden accepts the challenge, but convinces Sarina into a Tag-Team Duel. Sarina agrees, and splits herself in two for the face-off against Leo and Aster. Aster is reluctant to accept, but decides that he must win to learn the truth about the death disappearance of his father and the fate of an "Ultimate Destiny Hero" monster.

The Sarinas take an early advantage in the Duel, due to the fact that Aster refuses to cooperate with Leo, Furthermore, the full moon behind Sarina's "Full Moon Mirror" seems to wane into a new moon with every monster that is destroyed, and once "Full Moon Mirror" gains its tenth Full Moon Counter, Sarina declares that the true test has now begun.

Sarina 1 unveils her strongest monster: By Tributing "Magic Mirror Spirit Asogi" and "Magic Mirror Spirit Nayuta" she Summons "Dark Creator" to the field and multiplies her monster tenfold, thanks to a Field Spell Card called "Infinite Fiend Mirror". After stating that only the Chosen Duelist can destroy her army of "Dark Creator" monsters, she attacks, but Leo and Aster barely manage to survive her onslaught, because of Aster's "Elemental Recharge". However, as Sarina ends her turn without a direct attack, Leo realize that "Dark Creator" and the "Dark Creator Tokens" that were recently summoned cannot attack directly. Even though Aster manages to launch a counterattack with "Destiny Hero - Dasher", Sarina's "Dark Creator" has another surprise: it cannot be destroyed by battle. However, Jaden is able to use the effect of "Dasher" in the Graveyard to Special Summon his newest "Mythical" monster, "Iparu", and use it in a combo that brings out "Polymorph Altair". "Altair" is able to negate the effects of "Dark Creator", which, after "Dark Creator" is destroyed, undoes the effects of "Infinite Fiend Mirror". After the Duel, Sarina urges Leo and Aster to save her brother from the control of the light.

Back at Duel Academy, a Society of Light member, Bob Banter (who is in love Alexis Rhodes) Duels Leo to prove himself worthy to be Alexis' boyfriend. Alexis only accepts under one condition. If Leo loses, he will be reported for spying on her. Bob's cards involve the player to use their head Close to the end of the Duel, Bob activates "Quiz Panel - Obelisk 30" and Leo recognizes the card. Bob realizes that was the card he dropped in front of Leo earlier. Although Leo at this point knew the entire answer to the question of the card, he ultimately chooses not to answer it completely because he considered it unfair for Bob and that since he knew the answer, it wouldn't be a challenge for him at all. In the end, Leo wins the Duel after using a gamble of his own: "Secret Mission".

When Chancellor Sheppard returns and announces the Genex Tournament, Leo decide to prepared himself for the Genex and Syrus thinks that with any luck, Leo will Duel many professionals. Sheppard specifies that the entire island will be the Duel arena and that each participant will receive one Genex Medallion. Participants must Duel at least once per day and are not permitted to decline the first person who challenges them each day. The winner will obtain all Genex Medallions owned by the loser. The final two medallion-holders will compete in the final match. Sheppard announces that the best veteran Duelists that he met in his travels will be arriving here shortly. He urges all of the students to do their best as he wishes the first Genex Champion to be from Duel Academy.

After Sheppard dismisses them, the students discuss the new development. Syrus says he heard a rumor that the number of medallions one collects will affect your grade, with Aster saying he doesn't care about that. Hassleberry muses that its all about survival. Leo stated that no matter who he face He will beat them

#### Darkness

After the events that happened Previously Leo has became very withdrawn and became cold and distant while still care about his friends Syrus Emily and Chloe is now in the Obelisk Blue dorm, and He is the one of the only remaining student at Slifer Red along with Conner and Mack. He now spends most of his time alone, feeling too distanced from his friends after what had happened. He decides to leave Duel Academy, not wishing to put his friends in danger (he had come to believe that things that put his friends in danger happened because of him being around). However, Lincoln Sartorius and Kagemaru attempt to convince him otherwise, believing that he is needed on the island to prevent a growing danger in the near future. This seems to be well-advised, as before their meeting, Leo already confronts a mysterious Obelisk Blue student by name of Yusuke Fujiwara, who can hypnotize people and set fires with his eyes, as well as the mysterious entity Trueman, who seems to want both Leo and Fujiwara dead. Both of these entities noticed Leo showing Roki's power and commented that he is not a regular human.

Leo eventually regained his passion for Dueling while teaming with Alexis in a Tag Duel. While Dueling alongside her, he also made amends with her and repaired their friendship, making him more open to his friends again.

### 5D Series

#### Fortune Cup

Half a year since graduating from Duel Academy after His journey Leo return to Satellite by special means helping the people who are in trouble and spend his time testing his Duel Runner newest upgrades Leo then plan to return to New Domino City to reclaim his Stardust Dragon from Dylan

In the process, he runs into Trudge, a Sector Security officer, who wants to arrest Rally for stealing an acceleration chip. (in the dub, Rally was framed.) Trudge agrees to Duel Leo under the condition that if Leo won, Trudge would forget the events of that day; if Trudge won, Leo would give himself up to Trudge. After accepting the challenge and losing, Trudge swears to crush Leo, but lets him go.

Leo then return to New Domino City and manage to Find Dylan and tosses "Stardust Dragon" back to him, telling Leo he can have it. Leo refuses and tosses it back to Dylan, saying that he would rather Duel him for it to prove he can get it on his own. Dylan agrees, but their Turbo Duel is interrupted by the appearance of the Red Dragon right before the winner is determined, later revealed to have been Leo. The Dragon causes Dylan's already permanent birthmark (Mark of the Dragon) to glow and burn as well as revealing Leo's mark, the Dragon's Tail. Leo is arrested shortly after while Dylan leaves safely. Rex Goodwin and Lazar, who had been monitoring the Duel, reveal that if the Blue Dragon and Red Dragon hadn't appeared, Dylan would have lost.

After his arrest, Leo was given a bangle on his wrist that signified his criminal record and was sent to The Facility, where he met Alvin Harlan. Alvin informs Leo of the Six Dragons and the Signers Groups, telling him that those who have the birthmarks were chosen by the People of the Stars. Leo's birthmark is the Red Dragon's Tail, which appears on his arm when he fights alongside "Stardust Dragon" or encounters another Signer.

Leo meets mechanic named Flint, who imposes a Duel. Since Leo's cards had been taken, Alvin Duels Flint. Disgusted at weakness of Andros' cards, Flint stamps on the cards, despite their sentimental value to Andros. Leo knocks Flint down and challenges him to a Duel, borrowing Andros's Deck. Leo defeats him without ever attacking once and Flint offers his assistance to him.

Under Rex Goodwin's orders, the warden Armstrong is made carry out tests on Leo. Armstrong also has Leo sent to a different part of the Facility. Leo's new cellmate Ralph Jones offers Leo a chance to escape through a tunnel he's been working on for months. Leo agrees to come if they can take Flint and Andros too. However, Armstrong has Flint and Andros beaten for knowing Leo. Leo stands up to Mr. Armstrong, causing him to impose stricter rules. Goodwin then unexpectedly shows up and grants Leo freedom from the Facility - on the condition that he defeat Armstrong in a Duel and come to work with him. Leo, though feeling suspicious, accepts Goodwin's offer.

Leo refuses to escape with Ralph, as Tanner and Yanagi are unable to come too and escaping wouldn't grant true freedom. Without a Deck to use against Armstrong, the other inmates give Leo cards to use against Armstrong.

The next day Leo faces Armstrong, using the Deck of random cards. The Duel is set up to shock players if they suffer damage, but Armstrong rigs the arena to stop himself receiving shocks and uses surveillance cameras to see Leo's cards. Alex, however, uses his tunnel to sneak into a security room and switches Armstrong's shocks back on, causing a brief blackout in the process. During the blackout, Leo switches the positions of two of his Set cards, knowing that Armstrong knows which was Set where. Leo defeats Armstrong and is released by Goodwin.

Before his release, Andros gives Leo his "Totem Pole" card. Flint gives him his "Red Beast Deck", instructing him to go to a old friend of his to ask him who could help him and ask for a guy named Blister, then use the card to prove he met Flint.

Leo is followed by two men working for Goodwin at Bootleg, but is pulled away by Blister on his Duel Runner. Blister jams the signal emitted from Leo's bangle to stop them being followed. Despite believing it to be suicide on Leo's part, Blister helps him in infiltrating an impound warehouse to recover his Deck and Duel Runner.

Disguised as an electrician, under the pseudonym Leo Joel (Ryuma Akagi in the Japanese version), Leo was able to sneak into the warehouse. When he gets to the crate, where his Duel Runner is held, he is ambushed by Trudge. Leo hops onto his Duel Runner and smashes it through the crate. Trudge forces him into another Turbo Duel. While trying to escape, Trudge closes all the security doors, making Leo's chances of escaping very slim. However, Blister blows up the elevator door and at ground floor, Leo rides out while Trudge gets stuck in the elevator. Soon he catches up. After Trudge starts physically attacking Leo, Blister arrives to help, having had a change of heart over what Yusei told him about friends. Leo wins the Duel but is electrocuted by a huge crowd of Security then crashes outside at the Tops, where the richest people live, where he got knocked out. Leo was found by Leon and Luna, who felt his pain from the electrocution, as they see him on the floor and unconscious.

Leo is later given refuge by Dana Skye a photographer and her two younger twins sibling Luke and Luna. he fears that he would only cause them trouble by staying, but they manage to talk him into a Duel and staying for the night. Leo accepts Luke challenge to duel him and is reminded of Rally through Luke's personalities.

After leaving the twins Leo returns to his Grandfather home where he reunited with Mack Maya Joey and Tea Leo explain the recent event that happens recently. Leo then left and head to the garage to make an adjustment on his Duel Runner Leo reunited with Syrus and Alexis since a year since they graduated from Duel Academy

Leo is later threatened into participating in the Fortune Cup by Lazar, who holds his Satellite friends hostage. Leo is later given more incentive to participate when Dylan gives "Stardust Dragon" back and personally demands that he face him. In the quarter-finals of the Fortune Cup, Leo faced Hunter Pace, disguised as Shira, and won, moving to the second round where his opponent was Mai Valentine.

His next opponent in the quarterfinals is Greiger. After Leo defeats Greiger, Grieger attempts to take revenge on Goodwin for what he did to his village, but Leo manages to stop him. Before security takes Greiger away, he tells Yusei to fulfill his own mission. In the dub, Yusei stops Greiger from knocking down the tower Goodwin was in to get revenge on what Goodwin did to his village, but a spike broke through the glass at the top of the tower (where Goodwin is) from the collision with Greiger's Duel Runner and Leo's Duel Runner and Goodwin stopped it with his metal hand. As security takes Greiger away, he tells Leo to be careful in the finals in the dub. In Semifinal his opponent was Elena Alder

Leo faces Akiza, a member of the Arcadia Movement, in the finals. Previously, he had thought that she only felt anger and rejection. But after Akiza's first move, he notices and points out that she has a pleasure and joy for destruction. Akiza replies that cannot be true, however, later on, the Duel, after people insult her again, she accepts it all because of being the "Black Rose". According to her, this other side of her is the one who enjoys destruction all because of the powers caused by the Mark of the Dragon. He learns that after she was found by Sayer, he told her to feel but not to think, to let him do that for her. But even still, she puts on her mask just to feel; this prompts Leo to fight this Duel to change her.

By the end of the Duel begins as he says that her pain which came from all the destruction she caused was turned into one that the other Signers shared. Leo tells her that the birthmark may hold the answer for her pain, but in order to find out, she must think and love herself. Akiza still intends to deny this by winning the Duel without noticing, as pointed out by Leo, who has seen through her, that she is crying. Thus he eventually wins, resulting in her mask cut in half due to "Cosmic Blast" and after she falls, Akiza tells him to "help her".

He faces Dylan in the championship match. Although he is pushed to a corner in the middle of the Duel, Leo wins using various combos with "Stardust Dragon" and fuse Stardust Dragon and Altair into Omega Stardust Dragon to destroy Dylan's "Blitz Red Dragon Archfiend" and becomes the new King of Turbo Duels. He tends to ignore his victory, however, concerned about the vision of the Spider Nazca Line which he and Dylan saw during the Duel.

#### Dark Signers

Following his victory against Dylan, Leo flees the stadium with his Friends to avoid being mobbed by reporters and fans. They hide out at Blister's place at the edge of the city.

### Dylan Atlas

Leo and Dylan are closed friend since Childhood Along with Mack they always seemed to be together. When they were in Middle School, they joined The Enforcers, led by Kalin when they visit the Satellite. However their friendship had ended when Dylan defeated by Conner in a devastating manner after was offered the chance to become King of Dueling by attended Duel Academy Dylan betray Leo by beating him a Duel and take his Stardust Dragon and his Duel Runner when they were fourteen took off to New Domino City to become a Duel King under Rex Goodwin. Their friendship then ended

Their Relationship has since become rocky while Leo and Dylan attend Duel Academy Dylan would mostly act smug toward Leo the two of them only worked Together when needed

When it is discovered that Leo and Dylan are both Signers, whose destiny it is to save the world from the Dark Signers, they are forced to work together despite their differences. Their friendship is then finally fully repaired when Dylan admits during their duel against Rex Goodwin before how he knew it, he ended up in a group of pests and how he cannot escape what is known as a bond and tells Rex Goodwin people don't get easily lonely. From then on, Leo and Dylan became best friends again.

### Mack Hangan

Leo and Mack are best friends they share a closed brotherly relationship since they were kids both of them were raised in Satellite together. they have been best friends ever since. Mack cheerful and enthusiastic personality often made Leo enjoyed his company as both of them were raise in Satellite together

### Conner Blake

Conner was Leo's best friends since Childhood.

### Maya Adam

Maya is Leo's Sister Maya didn't get to meet Leo until she was Five years old because Leo was sent off to the Satellite when their parents dies from a explosion At their first meeting Leo act a bit cold and distant toward Maya causing her to a bit timid after seeing Leo doesn't smile much She tried to make him Smile and Laugh but Fail When She finally see Leo laughing and smiling when His Friend Mack won a duel against a bully and talked and how he won which cause her to take interested in Duel Monsters and Leo taught her everything he knows about Duel Monsters to her Leo became very closed to Maya and is very protective of her

In Japanese Version Mayu affectionately called Ryuichi Onii-chan meaning Older Brother in Japanese

### Joey Wheeler

Joey initially bullied Leo along with Jake, but after he saw how Leo stood up for them they became best friends.

### Pharaoh Atem

After putting the Millennium Puzzle together He meets Atem and He becomes his mentor and Taught Leo to always believe in his Deck and not only that They also developed a bond that is very strong which Leo came to respected Atem as a Father Figure. Atem would give his advice on how to overcome any tough situation or when making a decision.

Their bond is very strong When Atem sacrifice himself to save Leo so that his soul wouldn't be taken This left Leo completely sadden and depressed by this Sacrifice. Atem help Leo overcome his self doubt when most of his Friends were sacrifice due to his action and began suffer from Guilt however Atem tell him to snap out of it and convince him He can saved his Friend by Defeating Roki

After Leo beats Atem was very proud of Leo, tells him otherwise, and as he steps through the door to the afterlife, Leo gives him a hug, Telling He now ready to go on his own path forward.

### Téa Gardner

Téa has been Leo's friend since childhood. Téa is shown to cared for Leo very much she has also develop a attraction toward him though Leo was oblivious to this due to spending most of his time focusing on Dueling when Rebecca Hawkins hugs Leo, Téa appears upset She has also shown jealousy towards Mai Valentine for her initially flirtatious attitude towards Leo during her first appearance at Duelist Kingdom, as well as Vivian Wong. although she never has had the courage to actually confess her strong romantic feelings to Leo.

### Seto Kaiba

After Seto Kaiba lost to Leo in their first Duel, he becomes determined to defeat Leo and becomes his rival and recognized him as the Masked Duelist. Their differing personalities often causes them to come into conflict with each other such as their initial meeting with Kaiba's belief in cards being meant for power over Leo's belief that cards have a heart.

Despite their differences, Leo bears no animosity towards Kaiba, which cannot be said the same for the other way as Kaiba held a grudge against Leo for quite some time. He even cheered Kaiba on when the latter played a match against Pegasus even though Kaiba had taken Leo's star chips by threatening to jump off the edge of the castle unless Yugi stopped an attack that would have won him the Duel.

When Kaiba ultimately lost to Pegasus he had his soul taken away. Leo became outraged at Pegasus for playing games with their lives. He and Atem made it their mission to free Kaiba along with Mokuba Kaiba and Leo's grandfather. Kaiba helped Leo find his friends when they were abducted by Marik. Usually, circumstances force Kaiba to work with or aid Leo such as common foes like Marik and his Rare Hunters, the Big Five, or Dartz.

### Syrus Truesdale

Syrus and Leo first met at the entrance exam and later Syrus become one of Leo's best friends at Duel Academy. Leo believes in Syrus even when he lacks confidence in himself and he encourages him to have confidence in himself. An example of this is when they are both forced to Duel the Paradox Brothers, Leo motivates Syrus even though Syrus feels he will just be a burden.

Leo also cares deeply for Syrus and look out for him like he does with his other friends. Syrus has been thankful to Leo since for helping him gain confidence in dueling and since then His skills have greatly improved by a wide margin.

Syrus loses faith in Leo after watching their friends being sacrificed partly due to Leo's fault. These feelings are aggravated even more due to orb of drought planted in Syrus' mind by the evil Zure, Knight of Dark World. But later he realizes that it wasn't entirely Leo's fault and starts supporting him again. After Leo initially leaves Roki, Syrus seems to be the person who misses Leo the most and immediately cries tears of joy when he sees Leo return.

### Alexis Rhodes

Alexis Rhodes has always shown interest in Leo and his Dueling skills. They share a lot in common, like the same passion for Dueling. Along the series they become very close friends, willing to support each other in the most difficult times. An example of this is when Alexis risks her life to accompany Leo to the dimensional world in order to help him look for Jesse. Another example is when Leo Duels Alexis to free her from the control of Sartorius.

In the Japanese Version Ryuichi refer Asuka by her Last name and Asuka refer Ryuichi as Akai-kun but after the Team Duel against Furious Four they began referring each other by the by their first name which show represent closeness

Alexis has develop a crush on Leo after she first Duel him, which was first evident at the beginning of the series because of Leo's experlery style of dueling make Alexis took interest in Leo. Alexis has stated often that she does not want a boyfriend, and therefore has never gone through with anyone's interest in her.

Ironically as she develop her crush on Leo for not only being the few males not to show infatuation with her and Alexis feelings for Leo has grown progressively overtime One hint was shown when Leo stated that He doesn't think Alexis is the type of person who would write a Love Letter causing her to blush slightly at this.

Leo's Sister Maya suspect Alexis's crush on Leo when Leo was Teaching Alexis about Turbo Dueling commenting Alexis was pretty considering Leo as boyfriend material for Alexis or any other girl who have affection for Leo. Her dormmate, Jasmine wondered if Alexis was "falling for that Slifer", the "Slifer" being referred to as Leo. when Leo and Syrus Duel the Paradox Brothers. Alexis tells Bastion that she "is happy that Leo gets to stay at the Academy." Bastion corrects her by assuming that she meant Leo and Syrus, and presumably figures out that Alexis has a crush on Leo when Alexis tries to change the subject while Selene wonder why she only mention Leo.

Their relationship has generally grown apart when Leo had become Cold Distant and relatively Emotionless this troubles Alexis greatly. She keeps reminiscing about how things were during their first year at Duel academy. She wishes that Leo go back being the same person he was before But they were able to turn things around during the Duel Academy's Tag Duel tournament when Alexis reminds Leo that he used to very passionate about Dueling. After some time, during their final pair Duel and Leo was able enjoyed dueling again and was grateful to Alexis for reminding him his passionate for dueling Leo states that he's grateful to have met her and also claims her 'bold' combo of using "Doble Passe" was his first impression of her. During the course of the tournament, Alexis realizes she has feelings for Leo and proceeds to tell him after they had won, but decides not to go through with it and tell him that She was glad that she met him. Later, during the graduation party, she thinks about everything that has changed since their first year and feels that Leo has changed the most after Seeing Leo off.

### Chazz Princeton

Though originally one of Leo's rival, Chazz eventually becomes a close friend. Though their rivalry continues, they form a bond to their shared battles in various arcs.

### Roki

Roki was the spirit of a card Leo owned in his early childhood. Roki was the Father of Leo's Ancestor

### Akiza Izinski

Akiza and Leo, both skilled Duelists and Signers, shared a strong bond. Leo had consistently supported and assisted Akiza, prompting her to reciprocate the favor, her actions subtly revealing her special feelings for him. The extent of Leo's sentiments toward Akiza remained uncertain, yet his grandfather, Thomas, and Martha seemed to sense them. Martha playfully teased Leo about his affection for Akiza, while his grandfather even suggested that Leo ask her out on a date. However, Leo firmly denied any romantic connection, insisting that their relationship was purely platonic.

Akiza felt a profound connection to Leo, grateful for his role in helping her accept her true self. She regarded Leo as her closest confidant, as he had aided her in conquering her insecurities and demonstrating that she could change and form meaningful friendships despite the doubts others had placed in her path. Consequently, Akiza occasionally found herself on edge when others insinuated jealousy or possessiveness towards Leo, typically responding with threats or annoyance, swiftly changing the topic. She felt hurt when Leo neglected her due to his time spent with Bruno.

During their initial duel in the Fortune Cup, Leo attempted to reach Akiza, genuinely believing in her inherent goodness despite the harsh treatment she had endured throughout her life. One of Leo's primary motivations stemmed from his personal experience with the Supreme King, recognizing how his own destructive nature had been influenced by it in the past, only to be saved by a friend. Leo yearned to guide Akiza on a similar path towards redemption. In his interactions with Akiza, Leo consistently exhibited protectiveness and care, qualities he demonstrated to his other close friends.

When Akiza applied for her Duel Runner license, Leo accompanied her to a rollerblading arena, offering his guidance and support. Luke and Luna, noticing their camaraderie, playfully commented on the outing resembling a date. On another occasion, Maya directly asked Akiza if she harbored romantic feelings for Leo, causing her to blush and instinctively deny them.

### Bruno

The two have very similar interests, the first and foremost being the upgrading of Duel Runners, and due to this, they bonded very fast, to the extent that when they were doing a project, they were so absorbed in their own work that they didn't even notice anyone else's presence in the room.

## Deck

Leo original deck was Strategy Deck which belong to Grandfather He plays very flexible strategies, preparing him for any situation. Two Types that can be seen consistently throughout this Decks are the Fiend-Type and the Spellcaster-type which is focused on the Summoning of the Egyptian Gods and the "Dark Magician"

Leo originally only utilized a Junk theme Deck when dueling as Himself without the Mask Leo has many different cards in his Deck being either Warrior or Machine-Type monsters. Many of the cards he uses in his deck tend to be a constant in his duels, to which many have come to say that his strategies have become played out if not predictable. Despite this, Leo is still known for his exemplary dueling style, able to quickly analyze his opponent's tactics and formulate an effective counter-strategy by taking advantage of whatever cards he currently has access to. While he normally starts slowly to better gauge his opponent, he is shown able to build off his previous moves to methodically calculated well-ahead with a setup for bigger combos later.

Later in the Series Leo later acquired a Mythical Deck which compose many type of monster The majority of Leo's Mythical Deck compose of mostly Warrior type monsters and lack power, but he supports them with a variety of Spell and Trap Cards to unleash effective combos. Leo relies largely on Fusion with this deck and most of his monster are capable of being fuse together with Polymerization

He also relies on "Junk"-themed cards like "Scrap-Iron Scarecrow" and "Junk Barrage". Fitting with the motif, Leo's cards generally appear as rather weak in ATK and/or low in Levels with limited usage, but combined together for various innovative tactics. He also makes regular use of recycling his cards, either returning them to his hand/field or activating their effects from the Graveyard. To compensate for most of his monsters having limited ATK, he also uses cards that focus on Burn effects, such as "Junk Barrage" and "Cosmic Blast".

During the Arc Revolution he acquired a New Mythical Deck which involve Xyz summoning and able formulated new effective strategy with this new Deck which evolve his deck greatly and gain a new ace monster Mythical Warrior Aluze later Leo soon discover Pendulum Summoning and acquired another Mythical Deck that largely involved Pendulum Summoning become the Third Person to be able to Pendulum Summoning Leo began to often use Pendulum summoning as a way gather material for other summoning methods such as Fusion Synchro and XYZ summoning and Focus on his new Ace Monsters Yellow-Eyes Pendulum Dragon.