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Characters: Code Lyoko
For tropes and descriptions that apply to Code Lyoko: Evolution, please refer to its character page.

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The Lyoko Warriors

    In General 

    Ulrich Stern 
Ulrich Stern

"Who's the dork that pushed me into Sissi's arms?"

Voiced by: Barbara Weber-Scaff

The unofficial hero of the show, and the main favorite of fangirls. He is a quiet and introverted person by nature, quite the opposite of his best friend, Odd. Headstrong and stubborn, he cares for his friends and would do anything for them. Ulrich is more athletic than academic and it shows when you compare his grades to his sports performance. He attracts the attention of many females of the school, but has obvious feelings for Yumi. He manifests in Lyoko as an unarmored samurai, with the ability to "Triplicate" into three of himself, and Super Speed. His katana can deflect XANA's creatures' energy attacks.

Lyoko AvatarSeason 4 Avatar

    Odd Della Robbia 
Odd Della Robbia

"That's just the Magical Odd Effect. You see me once and you feel as though you've known me all your life!"

Voiced by: Matthew Géczy

The only extravert of the Team, and an incorrigible smart-aleck. He dresses in flashy, clashing colors, mostly purple and yellow. Though physically petite compared to the rest of the team, he is an adrenaline junkie, just the type to go for extreme sports. Also a passable student; his strengths are in the languages and artistic classes. He's a big flirt who's dated about every girl in his grade (most of them for only a day or two) as well as a few others. He has smuggled his small dog, "Kiwi", into the dormitories. In Lyoko, his avatar is a Cat Boy version of himself, including claws and a tail. He has heightened agility and stamina in this form, and can shoot "Lazer Arrows" from his forearms — which, for a time, tended to run out of ammo at the worst possible moments. This shortage was resolved in Season 2 at the expense of another of Odd's powers, the "Future Flash" which offered spontaneous visions of the mostly immutable immediate future. This left Odd with the short end of the stick powers-wise, a fact lampshaded in Season 3's "Triple Trouble" when Jérémie tries to give Odd a teleportation ability, but ended up making two clones for him instead, and the clones wind up not disappearing when no longer needed. At least he still has a marginally useful energy shield, granted as part of the Season 2 power realignment.

  • Anime Hair: A rare justified example: he is explicitly mentioned to use gel to keep his hair that way (though that doesn't explain the bi-color part). Notably, he originally had a regular hairstyle in the prequel, and changed it according to what he looks like on Lyoko (twice).
  • Big Eater:
    (seeing Odd wolfing down food for the first time)
    Ulrich: You always eat like this?
    Odd: No, it's just I'm not very hungry today.
  • Boisterous Bruiser: In training. He's too young to drink, but he gets the eating, womanizing, battle-happy and fun-loving elements down pat.
  • Book Dumb
  • Bring It: He's fond of the "bring it" Bruce Lee gesture.
  • Butt Monkey: Gets the least respect in his group, does badly in school, has absolutely no luck with his love life, and, as he lampshades, is "the only one who looks like a nitwit on Lyoko".
  • Camp Straight: He does look a bit effeminate (to the point of leading to Viewer Gender Confusion from some fans), dresses in pink and purple, and speaks in high-speeched voice. Graphic errors such as the occasional lack of undershirt, or his voice in the French dub, don't help either. Ironically, however, he is clearly shown to not only be straight, but also very interested in girls. Of course, that doesn't stop the Yaoi Fangirls from imagining things...
  • Casual Danger Dialog
  • Catch Phrase: "T'y crois pas!" ("Can't believe it!")
  • Crazy Enough to Work: Almost everything he does is this. See Leeroy Jenkins.
  • Crouching Moron, Hidden Badass: For all his silly jokes, Butt Monkey status and tendencies to go crazy in fight, Odd definitely is a skilled fighter. At several points, he has been able to deal with large amount of monsters entirely on his own, escape or distract Xanafied people on Earth and save Aelita. Not to mention he was the one who finally took down William, allowing the Lyoko Warriors to get him back.
  • Empowered Badass Normal: When Jérémie used a Tower to gives him powers for a short amount of time so he could fight toe-to-toe with a XANA-possessed Yolande.
  • Expository Hairstyle Change: In the prequel.
  • Face Palm
  • Insistent Terminology: "I'm not scrawny, I'm svelte."
  • Is It Something You Eat?
  • Keet
  • Kid-anova: He has had relationship with almost every girl in his school, Yumi, Aelita and Sissi excepted (and even then, he once replaced Ulrich as Yumi's partner at dance, flirted with Aelita upon first meeting her, and Sissi gets moments with him several times too).
  • Leeroy Jenkins: He rarely has any strategy before charging; most of his tactics consist either in doing something completely crazy or going ahead shooting at the enemy. Even his own teammates have some doubt about his sanity.
    Aelita: You call this being careful? I call it being COMPLETELY NUTS!
    Odd: Isn't that the same thing?
  • Meaningful Name: Aside from the obviousness, "Odd" may also come from "Odr", meaning "tip of the arrow".
  • Mr. Fanservice: He has his share of fangirls. This is at least partly due to his Lyoko form... and the Sensual Spandex.
  • Multicolored Hair
  • The Nicknamer: He's the one that names all the monsters (even complete with Xtreme Kool Letterz). As if that wasn't enough, two episodes reveal that he also calls some monsters by ordinary human names such as "Lucy-Ann". He's also responsible for Jérémie being called "Einstein" and Aelita "Princess" most of the time.
  • Outnumbered Sibling: Odd reveals in the episode "Distant Memory" that he has five older sisters who bully him.
  • Screams Like a Little Girl: It's even worse in the original French version, where he actually sounds like a kindergarten girl.
  • Shipper on Deck: He is very supportive of Ulrich's relationship with Yumi.
  • Ship Tease: Often with, ironically enough, Sissi.
  • Small Name, Big Ego: As he stated in the aptly-named episode "Bragging Rights".
    Odd: Yes, I'm a braggart, and I love it that way!
  • Static Character: The most noteworthy example on the show; he never changes.
  • They Wasted a Perfectly Good Sandwich: He hates this trope; he spends the entirety of the episode "Tidal Wave" complaining about not eating.
Lyoko AvatarSeason 4 Avatar

    Yumi Ishiyama 
Yumi Ishiyama

"Black is my color. Black, like your eye will be if you don't back off!"

Voiced by: Mirabelle Kirkland

The tallest and oldest of the group. A good student, she is a Japanese national at the boarding school, living off-campus with her family. She is one grade above the rest of the Team, which proves sometimes problematic. While she may have feelings for Ulrich, Yumi is exasperated by his inability to articulate his crush. Her virtual form is a geisha with a collapsible razor-edged fan, with which she can deflect energy bolts. The fan is controlled telekinetically, and can be thrown as a ranged weapon, returning to her hand after an attack. Yumi also exhibits telekinetic power over several objects of the Lyoko landscape — most often boulders in the Mountain or Desert sectors. A running joke among fans is XANA's tendency to single her out for attack.

Lyoko AvatarSeason 4 Avatar

    Jérémie Belpois 
Jérémie (Jeremy) Belpois

"OK, XANA. What do you have in store for us this time?"

Voiced by: Corey Padnos (2001), Sharon Mann (2004-2007)

Jérémie is the computer genius whom operates the Supercomputer and allows the interface. He's also the leader of the Team, and shows good tactical skills even under pressure. As the most level-headed, he keeps the infighting within the group to a minimum. He can even get a bit authoritarian, despite being the youngest. Jérémie is one year younger than Ulrich and Odd, having skipped a grade. He has more than a crush on Aelita, and it's largely this motivation that keeps the Team going in time after time to shut XANA down. Though he has been virtualized twice, this has never been done on camera — something of a Lampshade Hanging on the second occasion.

Lyoko Avatar
  • Take Our Word for It: "He was ridiculous..."
  • The Unreveal: Each time he went on Lyoko, it either happened offscreen or had a specific condition that caused him to keep his normal appearance instead of an avatar.

    Aelita Stones 
Aelita (Maya) Stones (Lyoko / Hopper / Schaeffer)

"And just forget about my past, you think that's easy? You didn't spend ten years of your life as some sort of computer software!"

Voiced by: Sharon Mann

Aelita started out as the Damsel in Distress in the series. Unlike the other characters, she seemed to have originated on Lyoko, and survived there for years. The first season of the show deals with Jérémie and the Team trying to figure out a way to materialize her into the real world. She originally had two special abilities in Lyoko: she could enter the access towers that XANA uses to interface with the real world and shut them down, and she had the ability to morph the virtual landscape around her to create walls, rockslides, etc. Starting with Season 3, she was no longer in danger of being killed if losing all her Life Points. She gained the ability to attack with spheres of energy as well, and obtained wings in Season 4 with her new outfit.

Lyoko Avatar

Season 4 Avatar

    William Dunbar 
William Dunbar

"I'm not the kind of guy who likes to steal the show."

Voiced by: David Gasman

A transfer student exiled to Kadic Academy in Season 2 for spamming love notes. His primary function during the first half of his tenure was to act as a Romantic False Lead for Yumi and lampshade Ulrich's inability to spit it out in the process. William's assistance in foiling several of XANA's schemes on the real-world side proved critical in Season 3, though, and after he confided to the Team that he was starting to dream about elements of his adventures that should have been erased with the Return to the Past, the Lyoko Warriors reluctantly (but unanimously) took him on as their newest member. It went downhill from there. Mind-controlled by XANA (and stripped of his higher vocabulary in the process), William spends the majority of Season 4 as the Lyoko Warriors' most consistent virtual threat. He gets better, but the show ends two episodes later, and on kind of a harsh note for him.

Lyoko Avatar



This malevolent A.I. is the main antagonist. Created by Franz Hopper to counter "Project Carthage", he rebelled against his creator and was sealed in the Supercomputer some 10 years before the start of the series. His true motivations are unknown, but he is hostile to humanity, and to the Lyoko Warriors in particular. He regularly attacks the real world through the Lyoko Towers. Being a program, he has no definite shape and manifests through the ever-present logo (or Eye of XANA) and the monsters on the Lyoko Sectors. He tries to escape the Supercomputer throughout Season 2 so that the heroes can no longer defeat him by cutting the juice, and after doing so he attempts to conquer the world in Season 4 by creating an army of robots.

  • A.I. Is a Crapshoot
  • Arch-Enemy: To the Lyoko Warriors and Franz Hopper.
  • The Bad Guy Wins: He partially succeeds in this in season 1 finale by preventing Aelita's escape from the Supercomputer. Seasons 2 and 3 end with him fully reaching his goals (respectively escaping the Supercomputer and destroying Lyoko).
  • Big Bad: He is the only villain in the entire series (if one doesn't count Evolution).
  • Card-Carrying Villain: Judging by the song he used to hypnotize all of Kadic in "Killer Music" titled: "Glad When Your Bad".
  • Character Development: Ironically for a never-seen character, he gets lots of it throughout the series. His goals shift along with time according to the situation, his schemes become more complex, and his power increasing allow for varied and subtler tactics. As the series progress, he goes from something in the vein of a Generic Doomsday Villain in season 1 to a skilled Magnificent Bastard by the end of the show.
  • The Chessmaster: Not as much initially, but as the series progresses, he starts developing more complex schemes.
  • The Cracker
  • Crazy-Prepared: The Lyoko Warriors are attempting to destroy his Replikas' supercomputers in order to cut down his resources? He has infected hundreds of them all over the world.
  • Dangerously Genre Savvy: He usually plans everything that can logically be planned, and, when he does make a mistake, he learns from it.
  • Enemy Mine: In "Marabounta" with the Lyoko Warriors.
  • Evil Computer Virus Cannot Comprehend Friendship: In season 1; due to his intelligence being based on pure logic, he was unable to understand why Jérémie would go into the scanners (something that is stated to terrify the young hacker) to save his friends. However, he is also notable for being one of the few villains to learn from it; in a later season 2 episode, he anticipates Aelita's Heroic Sacrifice and takes advantage on it to pull out a Batman Gambit.
  • Evil Plan: Downplayed. Other than "self-preservation" he doesn't seem to have an over-arching scheme. Though he does come up with more complex schemes as the serie goes on.
  • Faceless Eye: His trademark symbol.
  • He Who Must Not Be Seen: He doesn't even have a body to begin with.
  • Instant A.I., Just Add Water: Justified, Franz made XANA and gave him the ability to evolve, before he learned that XANA was becoming too smart.
  • Manipulative Bastard: Though he has issues understanding emotions, he is still smart enough to develop various schemes based on emotional manipulation. As the serie progress, he gradually becomes better at it, eventually going near to the Magnificent Bastard level.
  • Master Computer: Seasons 1-2.
  • Noble Demon: Tend to change a lot Depending on the Writer, but XANA will occasionnally displays some shades of this:
    • Hinted in "Marabounta"; after teaming up with the Lyoko Warriors against the common threat, they expect him to turn against them, but his monsters instead politely bow to them before retreating without any fight.
    • ... but then has no problem betraying Jérémie in their second team-up the next episode.
    • Similarly, in "Ultimatum", when he attempts to blackmail the Lyoko Warriors into delivering Aelita to him by taking Odd and Yumi as hostages, he doesn't attempts to kill them until it's clear Jérémie refused, and even shows concern with keeping them alive.
    • Also when XANA possessed Jim and attacked Jérémie in "Final Mix", he merely restrained Jérémie when he quite easily could have killed him. Of course, this was before XANA grew to despise Jérémie.
  • Nothing Is Scarier: Seriously. The heroes are fighting an enemy trying his best to kill them who they never see, who almost never communicates with them. Still, he's obviously there, and it can clearly be terrifying at times.
  • Powers That Be
  • Pragmatic Villain: Appears to be this. Especially shown in "Marabounta" where he teams up with the Lyoko Warriors to destroy the titular Marabounta, not to save the Lyoko Warriors, but to save himself and Aelita, since XANA needs her memory to escape the Supercomputer. Also shown in "Hot Shower" where he destroys the piece of a comet he was going to use to destroy the factory and the Supercomputer, not out of pity, but because Aelita was devirtualized from Lyoko and he needed Aelita alive and on Lyoko to lure out Franz Hopper.
  • Red and Black and Evil All Over
  • Sealed Evil in a Can: The Supercomputer being the Can. Though it only truly imprisons him when you shut it down; when active, it still prevents him from escaping, but not from wreaking havoc.
  • Sliding Scale of Robot Intelligence: Nobel (to maybe Godlike by Season 4).
  • Soul Jar: His Replikas' supercomputers in season 4 serve as this to him.
  • Turned Against His Master
  • Ultimate Evil: Besides the Faceless Eye, we never see a physical form in the real world or even a Lyoko form.
  • Villainous Breakdown: Has one toward the end of Season 1, in the episode "Ghost Channel", where the above quote comes from.
  • The Voiceless: With the exception of the parts in "Ghost Channel" where he impersonnate Jérémie and "Franz Hopper" where he seemingly expresses himself through Hopper's clone, we never hear him talking. And even then, it's unclear if it was actually him talking.
  • XANAtos-Gambit: Any of his plans involving massive damages or witness can be considered as such: even if the Lyoko Warriors successfully stop his attack, they are forced to use the Return to the past to erase the event, making XANA stronger in the process.

    Lyoko Monsters 
Lyoko Monsters
Polite, efficient, deadly.

The dozen or so models of virtual monsters that XANA uses to defend activated towers and other important locations on Lyoko:

  • Guardians (Gardiens) — Not actually monsters, but force fields designed to trap a victim on Lyoko while XANA confused the heroes with tangentially-related real-world shenanigans. Used twice in Season 1 and shelved afterwards.
  • Roachstersnote  (Kankrelats) — As close to The Goomba as you'll get from XANA, these mollusk-like critters have a basic design: legs, a laser cannon housing, and little else. They often make up for their lack of individual strength with Zerg Rush tactics; their small size also allow them to hide and act as snipers. The first of two monsters to be fielded in the real world (in "False Start"). Quickly evolved into the Plucky Comic Relief among the monsters with their tendency for being Too Dumb to Live.
  • Hornets (Frelions) — The Airborne Mooks of Lyoko, looking like giant wasps with ten wings. They fly around, shoot lasers from their stingers, drip acid at close range (only in Season One), and make the Lyoko Warriors suffer for not having a dedicated anti-air weapon.
  • Bloks — Walking cubes about twice as tall as one of the heroes. The four side faces are marked with Eyes of XANA — one is the actual weak point, while the other three fire lasers, ice rays, and rings of fire respectively. The ice rays can paralyze the targets or devirtualize them if they're low on Life Points. The fire rings are the least often used, though both Ulrich and Odd got devirtualized by them in "The Secret".
  • Krabes — These four-legged, lanky six-eyed beasts deliver powerful laser attacks from both their eye arrays and underbellies. They sometimes also try to skewer the heroes with their pointy legs. Krabes are the first monster type to be deployed en masse ("The Chips Are Down", in which a line of several dozen guards the tower) and the second (and final) type to be deployed on Earth ("A Bad Turn").
  • Megatanks (Mégatanks) — A deathly powerful area denial weapon, these things consist of an arc-laser emitter cocooned within two indestructible shell halves which expand and contract to allow firing. Their attacks are arguably powerful enough to destroy Towers with enough concentrated fire (as attempted during Aelita's first transfer out of Lyoko in "Code: Earth"), but can be resisted with a couple of the Lyoko Warriors' weapons. They also move very fast by closing their shell and rolling on themselves, not hesitating to crush any unlucky hero in their path.
  • Tarantulas (Tarentules) — XANA's apparent first attempt at min-maxing its monsters: they have more Life Points than any other monster barring the Scyphozoa (as of its Season 2 rollout), the Eye of XANA weak point is small and located at the back of the head, and their mobility is largely sacrificed for high-speed firing of the laser cannon stubs on their arms.
  • Scyphozoa (la Méduse) — XANA's first Dragon, looking like a levitating giant jellyfish. It eschews direct attacking for wrapping its tentacles around Aelita and attempting to crack her Neuro-Vault open. Other notable targets include Yumi (to force a variant Friend or Idol Decision by making Aelita transfer her own materialization code to replace Yumi's deleted version), William (to make him the new Dragon), and the Skidbladnir (to sabotage its shield regeneration). It normally retreated when it was rendered unable to gain what it came for, only having been destroyed once in "The Lake" when it was overloaded, but XANA just made another.
  • Creepers (Rampants) — Worm-like monstrosities that inhabit Sector 5 exclusively, where they Wall Crawl at will. The unique laser cannon in their mouth is more powerful on average than those of other monsters. Notable for being one of the few enemies that explodes in a large quantity of Ludicrous Gibs.
  • Mantas — White-and-blue manta rays that "swim" through the air and shriek like hawks. As if XANA didn't have enough air superiority, these Giant Flyers hatch from the Celestial Dome surrounding Sector 5 and can deploy practically everywhere to shoot the regular lasers or poop deadly multi-terrain mines. William gains a black one as steed when under XANA's servitude.
  • Kongres — Eel-like monsters that antagonize the heroes in the Digital Sea. Have More Teeth than the Osmond Family.
  • Sharks (Rekins) — Shark-like monsters also native to the Digital Sea. Fire torpedoes instead of lasers.
  • Kalamar — Only seen once in the Digital Sea, it attempted to drill through the Skid's hull.
  • Kolossus (le Kolosse) — XANA's last-minute Giant Mook, appearing as a towering Lava Golem with a blade for a left arm. It foregos standard lasers to crush the Lyoko Warriors and the Skidbladnir with sheer physical power. It is harder to kill than most monsters, having two Eyes of XANA that must be hit simultaneously to destroy it.
  • Video-game monsters — The Volcano Replika and other locales in the Code Lyoko video games give XANA several extra additions to its bestiary, from lanky Insekts to hardy Volcanoids to the first DS game's Final Exam Boss Scorpion.

  • The Speechless: They do not seem to have human intelligence, and do not speak beside shrieking, roaring or other unintelligible sounds.
    • Super Drowning Skills: With the exception of the Kongres, the Sharks and the Kalamar. Justified though, since this is Lyoko, where falling in the Digita Sea equals being disintegrated for them. Landbound monsters even sink in ordinary bodies of water, that you can find on the Ice Sector.
    • We Have Reserves: XANA can create as much of them as he wants, so he has no qualm about sacrificing them if necessary.
    • Xtreme Kool Letterz

Will not disrupt household appliances.

Artificial smoke-beings created by XANA through an activated Lyoko Tower to cause havoc on Earth. At first they were only able to take control of inanimate objects or machines, but as XANA gained in power they started taking over animals or even humans. The possessed ones (often labeled as "XANAfied") can be recognized by the XANA symbol in their eyes. The Specters confer them some special powers, like Nigh-Invulnerability (they can still be knocked out if taken by surprise, and are vulnerable to electricity or EMP), Super Strength, Wall Crawl, Shock and Awe... and others as the series progresses. Alternatively they can control many animals or people, but then fewer special powers are gained because XANA's energy is diluted.

    Polymorphic Clones 
Polymorphic Clones

An advanced form of XANA's Specters, the Polymorphic Clones have no need for a host and can take a human shape by themselves. They can copy many appearances, most often of the Lyoko Warriors or some adult to sow division or attack by surprise. They have the same powers as a XANAfied human with the addition of shapeshifting. They solely appeared on Earth, with the exception of one going to Lyoko through a scanner by replacing Odd in the episode "Revelation". Jérémie mastered the technology in Season 4 to create a short-lived clone of himself, and then a replacement for William. Both of Jérémie's clones, however, have a strange programming flaw: their personalities are partially inverted compared to the originals. The Jérémie Clone is an insufferable Odd-like Kid-anova, while the William Clone is dumb as a sack of bricks.

Kadic Academy

    In General 

    Élisabeth "Sissi" Delmas 
Élisabeth (Elizabeth) "Sissi" Delmas

"I'm the star, the diva of the school!"

Voiced by: Jody Forrest

Daughter of Kadic Academy principal Jean-Pierre Delmas. She can have practically any boy at school — but she wants Ulrich, who'd rather have nothing to do with her despite (or maybe because) they'd known each other since childhood. To separate Ulrich from Yumi (not that they're actually together, honest), Sissi makes a variety of attempts to undermine the bonds of friendship between the Lyoko Warriors. These often manifest as attempts to administratively separate them through her power as a one-girl Absurdly Powerful Student Council or the use of blackmail material to buy her way into the group. Either way, she has the potential to sow a greater division than XANA himself. The prequel two-parter "XANA Awakens" reveals that she had initially been in on the Lyoko Warriors' secret, but her memories of the Supercomputer's activation were wiped with a RTTP because she notified her father due to thinking her friends were in danger and a misunderstanding of betrayal occured. Hints dropped from late Season 2 and through Season 4 seem to reinforce Fanon that Sissi could be perfectly content with Odd — so long as she doesn't realize it's a Bohemian like him that she connects with.

    Jim Moralès 
Jim Moralès

"Actually, I'd be glad to talk about it, but I don't have the time!"

Voiced by: David Gasman

The Gym teacher and dormitory supervisor at Kadic Academy. A bit overweight and prone to speeches full of redundancies and malapropisms, he's most often the comic relief. But when things get dangerous he can prove extremely courageous and fiercely protective of the children. Jim is sometimes the butt of the students' practical jokes, and as a result can be overly severe toward them. He's very suspicious of Team Lyoko, and ends up discovering the Factory several times, to have his memory erased by the Returns to the Past. Starting with Season 2, whenever appropriate to the situation, his shtick is to mention one of the many jobs or hobbies he's supposed to have done in the past, from sewer worker to astronaut.... Though some of these might be true, most are probably wild exaggerations, as suggested in the episode named for his Catch Phrase.

    Hiroki Ishiyama 
Hiroki Ishiyama
The only Annoying Younger Sibling so far.

"YUUUUMIII, your boyfriend is here!"

Voiced by: Barbara Weber-Scaff

Yumi's younger brother, appearing in Season 2 and joining the 6th grade at Kadic at the start of Season 3. He shows some hero-worship toward Ulrich, and constantly hounds his sister to date the Stern boy and admit her feelings for him. A bit of a crook, he often blackmails Yumi into doing his homework in exchange for not tattling to their parents when she's out saving the world. Unwittingly tagging along in some of XANA's attacks, he tends to be a dangerous distraction (in "A Bad Turn"), but also shows some useful skills (like picking locks in "Hot Shower"). He never keeps memories of this thanks to the Returns to the Past.

  • Annoying Younger Sibling: His sole role seems to be teasing Yumi about her relationship with Ulrich. To say she finds this annoying would be an understatement.
  • Bratty Half-Pint
  • Everyone Knows Morse: He does have an excuse for this, though; he and Yumi learned it to talk in secret at the table.
  • Remember the New Guy: Hiroki is nowhere to be seen in season 1, even though we see the Ishiyama household a few times. Even in "Holiday in the Fog", when the family are going on vacation, Hiroki isn't seen in the car. Yet when he shows up in season 2, no-one draws attention to his sudden appearance.
  • Shipper on Deck: Of his sister and Ulrich, though it's mostly about teasing her.
  • Tagalong Kid
  • Young Entrepreneur

    Franz Hopper 
Franz Hopper / Waldo Schaeffer

"Project Carthage was military program used to block enemy communication. [...] So I built the Supercomputer, created Lyoko, and last of all XANA, to destroy Carthage."

Voiced by: Paul Bandey (second season), Alan Wenger (third and fourth seasons)

Aelita's father, the creator of the Supercomputer, Lyoko and XANA. Also a former Science teacher at Kadic Academy.

  • Badass: He rarely manifest in person, but when he does, it almost always result in him doing something awesome to help the Lyoko Warriors. XANA considered him enough of a threat to miss a chance to destroy the Supercomputer and Lyoko Warriors for good if that meant not being able to deal with him.
  • Ball of Light Transformation: Unlike other, rather than taking the form of a humanoid Digital Avatar, Franz Hopper is permanently virtualized on Lyoko under the shape of a brilliant ball of light.
  • Big Good
  • Color-Coded Characters: White.
  • Heroic Sacrifice: Allows himself to be killed by Mantas while he diverts enough power to the Supercomputer to launch the Anti-XANA Program.
  • The Obi-Wan: He serves this function to Jérémie, helping him to refine his programming and giving him data and better weapons with which to fight XANA.
  • Opaque Nerd Glasses
  • Papa Wolf: XANA knows it.
  • Phlebotinum Rebel: Franz Hopper created XANA to destroy "Project Carthage", which he was previously working on.
  • The Professor
  • Properly Paranoid: He suspected agents were following him while he was working on the Supercomputer. He was right.
  • Real Name as an Alias: Waldo Schaefer, a.k.a. Franz Hopper, changed his monicker for his middle name and the maiden name of his wife.
  • Staying Alive: In three season finales, he sacrifices himself for Aelita. The third time seems definitive.
  • Transhuman Aliens: Hopper is permanently virtualized into Lyoko, and his avatar is a brilliant ball of light, rather than a humanoid like the other Lyoko Warriors.
  • Mad Scientist: He built the Supercomputer, Lyoko and XANA on his own.
  • Virtual Ghost: Franz never bothered taking a corporeal form on Lyoko.
  • The Voiceless: While his voice is heard on screen, it's always either in a flashback, a recording, or a XANA trick. Hopper himself (in light ball form) is never heard to speak.

    William's Clone 
William's Clone
Clone William. Awwwwwww!

"To be specific, I'm a digitally-generated random polymorphic energy field controlled by a basic non-evolving behavioral program."

Voiced by: David Gasman

A Polymorphic Clone created by Jérémie to replace William throughout season 4 while the latter is controled by XANA, so that nobody at Kadic gets suspicious from his prolonged absence. The clone is close enough from the original to fool most people, although his programmation isn't quite perfect, making him a Literal-Minded Ditz — and a big source of humor. Milly and Tamiya discovers something is amiss in episode "A Lack of Goodwill", and William's Parents quickly find out he's an imposter (in episode "Down to Earth"), just before William's return.

  • Artificial Human
  • Cannot Tell a Lie: He was never programmed to lie, so his answers are always truthful — although still literal and confusing.
  • Cloning Blues: Averted. He's not self-aware enough to care that he's just a replacement doomed to disappear when the true William comes back.
  • The Ditz: His artificial intelligence isn't quite advanced enough to make him act normal.
  • Doppelgänger
  • Hard Light
  • Literal-Minded
  • Other Me Annoys Me: If the possessed William looks annoyed at the sight of his clone, it's nothing compared to what the real one discovers it did to his reputation when he's finally free.
  • Replacement Goldfish: He tends to exemplify the "Goldfish" part more than the "Replacement" part.
  • Techno Babble: The above quote.
  • Undying Loyalty: To the Lyoko Warriors, so long as XANA can't control him. He even goes so far as to try to fight the real William in one episode (not with much success, unfortunately).


Odd's dog, which he brought secretly in Kadic and now hides inside his room with the help of Ulrich, since pets are forbidden at school. Kiwi tends to not do much besides eating, sleeping and in some occasion wreaking havoc in the room. Odd, however, is devoted to it.

  • Dogs Are Dumb: If Jérémie's opinion is anything to go by.
  • Loophole Abuse: Used in one episode, where Jim finds out about Kiwi. When pointed out that pets are forbidden inside school, Odd notices that they are in the bus at this point, meaning they are technically outside school.
  • Open Secret: Pretty much every student at the school knows that Odd is keeping him in his room in defiance of the rules; Sissy even threatened to tell on him in one episode, but apparently changed her mind later.
  • Ridiculously Cute Critter
  • Robot Me: Kiwi has a robot duplicate built by Jérémie.
  • Team Pet: To the Lyoko Warriors.

Coconut Fred's Fruit Salad IslandCharacters/Western AnimationCode Lyoko: Evolution

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