For tropes and descriptions that apply to ''Characters/CodeLyokoEvolution'', please refer to its character page.

[[foldercontrol]]

!The Lyoko Warriors

[[folder:In General]]
* BadassCrew: Even when not on Lyoko, Ulrich and Yumi possess advanced martial art skills, Odd is athletic and relatively good at adapting to situations, and Jérémie is able to help as much as the others without even fighting. It's saying something that they fought against XANA's attacks several times and still survived long enough for Aelita to disactivate the towers.
* {{Digital Avatar}}s: The way they go on Lyoko.
* HeroSecretService: Odd, Ulrich, Yumi and Jérémie are this to Aelita.
* KidHero
* MediumBlending
* {{Ordinary High School Student}}s
* PlayingSick: A regularly used method to escape school when XANA attacks.
* PowersAsPrograms: A literal example; the powers ''are'' programs.
* RecruitTeenagersWithAttitude: Justified; they weren't "recruited" by adults in the first place, Jérémie (who is himself a teenager) just happened to find the Supercomputer and assembles a bunch of comrades of his age for help because he is afraid adults would want to destroy the Supercomputer or shut it down without leaving him the time to find a way to materialize Aelita. Plus, [[AdultsAreUseless the one time they try to break the secret and ask adults for help,]] [[YouHaveToBelieveMe no-one believes them.]]
* RippleEffectProofMemory: Courtesy of their memory being registered in the Supercomputer, they are immune to the Return to the Past memory-erasing effects.
* StealthHiBye
* TeensAreShort
* TeethClenchedTeamwork: At their beginning, they had limited loyalty to each others besides keeping the secret and would often argue or be missing (in ''Gravity'', Ulrich flat-out refuses to help deal with the current attack so he can take part in a soccer match). They get better over the course of the series.
* ToTheBatpole
* TrueCompanions: By season 3-4, they have grown into this.
* TwoGirlsToATeam
* WakeUpGoToSchoolSaveTheWorld
[[/folder]]

[[folder:Ulrich Stern]]
'''Ulrich Stern'''
[[quoteright:200:http://static.tvtropes.org/pmwiki/pub/images/ulrich_3228.png]]
[[caption-width-right:200:[[TheHero Everybody's hero.]]]]

->''"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 {{fangirl}}s. 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 SuperSpeed. His katana can deflect XANA's creatures' energy attacks.

* AbusiveParents: Ulrich's emotionally abusive dad; he seems to only care about his son for his grades, and, if Ulrich's talk is anything to go by, hasn't talked to him for a year. Not to mention his mother who acts as an enabler by sitting by and watching her husband berate their son.
* AchillesHeel: He has vertigo, which flares up at rather inconvenient times.
* AchillesInHisTent: Wound up in the proverbial tent after being kicked off the team briefly.
* {{Badass}}: He's just as capable a fencer in real life as he is in Lyoko. In ''Tip-Top Shape'', he [[OneManArmy single-handedly defeats]] ''[[CrowningMomentOfAwesome an entire squad of XANA's monsters]]'' using [[DoppelgangerAttack Triplicate]].
* BattleCouple: With Yumi.
* BigManOnCampus: Considered handsome by almost every girl in Kadic, and a skilled soccer player to boot. Notably, he is not exactly happy with it, as it causes him to have Sissi as a StalkerWithACrush.
* BookDumb: He is far from being actually dumb, but his grades are obviously bad. This is the major source of his tensed relationship with his father.
* BringIt: Like Odd, he sometimes does the "bring it" Bruce Lee gesture.
* BrownEyes
* CallingTheOldManOut: In the season 3 finale, his father comes to Kadic to talk to him about his bad grades. At first Ulrich silently submits himself to his criticisms; then his father suggests his friends are the cause of his grades, and Ulrich replies with this trope:
-->'''Ulrich:''' [[ReasonYouSuckSpeech Give me a break! What do you know about them? Nothing! You don't know me either actually! We haven't talked for a year!]]
* CasualDangerDialog
* CannotSpitItOut: He likes Yumi. A lot. But he never manages to articulate that -- even in the face of competition.
* ChickMagnet: Yumi, Sissi, Milly, Émilie, and most fans have all wanted a piece of him at some point or another.
* CrazyJealousGuy: Especially when William enters the picture.
* DeadpanSnarker: Mainly toward Sissi and Odd, but the others also get their part of it.
* GreenEyedEpiphany
* GreenEyedMonster: Ulrich can be especially jealous when it comes to Yumi.
* JerkWithAHeartOfGold: In the prequel, he is [[{{Jerkass}} much more antisocial]], being actively antagonistic toward Yumi just because she beat him in martial arts practice, treating Sissi with disdain especially after a misunderstanding between them (which causes her to go from SpoiledSweet to AlphaBitch), acting displeased by Odd now sharing his room, almost denouncing him to Principal Delmas when discovering he brought Kiwi in secret to Kadic, and even later [[KickTheDog attempting to use Kiwi as a test subject for Jérémie to see if the virtualization process works.]] Doesn't prevent him from coming to Jérémie's help twice when seeing him in danger, going on Lyoko to rescue Odd without hesitation when he gets virtualized instead of Kiwi and actually showing concern for Aelita's plight. Judging by [[TookALevelInKindness how he is portrayed in other episodes]], [[CharacterDevelopment it seems like teamwork eventually made him a better person.]]
* JustFriends: With Yumi. [[spoiler:Even by the end of the show, it's left unclear if their relationship is solved or not.]]
* LoveAtFirstPunch: He first met Yumi as a sparring partner in a martial arts class.
* MeaningfulName: "Stern" for TheStoic.
* MrFanservice
* SarcasticDevotee: Never misses a chance to snark about Odd's [[SmallNameBigEgo ego]] and [[KidAnova love life]], but the two get along like the best of friends.
* SheIsNotMyGirlfriend: In regards to Yumi.
* TheStoic
* StraightMan: To Odd's comic relief.
* TwiceShy: With Yumi.
* UnresolvedSexualTension: With Yumi.
* WellDoneSonGuy: A whole Ulrich-centered episode has him constantly seeking approval from his ultra-exigent father. He gets it in the end... [[spoiler:at the apparent cost of his father's life]]. And then promptly has it ResetButton'd. Poor guy.
* WhyDidItHaveToBeSnakes: Why Did It Have to Be Heights?
* WillTheyOrWontThey: With Yumi. According to the SeriesFinale "Echoes", they will... but it was ''highly'' tentative.
Lyoko Avatar
* AttackReflector
* BadassBiker: From Season 2 onwards.
* CallingYourAttacks
* CarFu: With the [[CoolBike Overbike]].
* DoppelgangerAttack: "Triplicate" allow him to generate two duplicates of himself. In the first season they only act as decoys to distract enemies, but Season 2 has him using them as allies that can attack of their own.
* DoppelgangerSpin: "Triangulate!"
* EverythingsBetterWithSamurai
* FingerlessGloves
* HitPoints
* LightningBruiser: His Super Sprint power and katana makes him both a formidable fighter and the fastest of the group.
* KatanasAreJustBetter
* LeParkour: A side effect of Super Sprint.
* {{Samurai}}
* SpeedEchoes
* SuperSpeed: "Super Sprint!"
* ThrowingYourSwordAlwaysWorks
* WeaponOfChoice: Katana.
Season 4 Avatar
* DualWielding
* HardLight: When "translated" on Earth.
* SensualSpandex
[[/folder]]

[[folder:Odd Della Robbia]]
'''Odd Della Robbia'''
[[quoteright:200:http://static.tvtropes.org/pmwiki/pub/images/odd_7278.png]]
[[caption-width-right:200:[[SmallNameBigEgo Small boy, big personality.]]]]

->''"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 [[KidAnova 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 [[YouCantFightFate 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, [[MesACrowd 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 [[DeflectorShields energy shield]], granted as part of the Season 2 power realignment.

* AnimeHair: 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 ([[ResetButton twice]]).
* BigEater:
-->(''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.
* BoisterousBruiser: In training.
* BookDumb
* BringIt: He's fond of the "bring it" Bruce Lee gesture.
* ButtMonkey: Gets the least respect in his group, does badly in school, has absolutely ''no'' luck with [[KidAnova his love life]], and, as he lampshades, is "the only one who looks like a nitwit on Lyoko".
* CampStraight: He does look a bit effeminate (to the point of leading to ViewerGenderConfusion from some fans), dresses in pink and purple, and speaks in high-speeched voice. Graphic errors such as [[http://img.codelyoko.fr/galeries/19_frontiere/Frontiere_365.jpg 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 [[KidAnova also very interested in girls]]. Of course, that doesn't stop the {{Yaoi Fangirl}}s from imagining things...
* CasualDangerDialog
* CatchPhrase: "''T'y crois pas!''" ("Can't believe it!")
* CrazyEnoughToWork: Almost everything he does is this. See LeeroyJenkins.
* CrouchingMoronHiddenBadass: For all his silly jokes, ButtMonkey 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 [[spoiler:he was the one who finally took down William, allowing the Lyoko Warriors to get him back]].
* EmpoweredBadassNormal: 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.
* ExpositoryHairstyleChange: In the prequel.
* FacePalm
* InsistentTerminology: "I'm not scrawny, I'm svelte."
* IsItSomethingYouEat
* {{Keet}}
* KidAnova: 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 [[ShipTease gets moments with him several times too]]).
* LeeroyJenkins: 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?
* MeaningfulName: Aside from the obviousness, "Odd" may also come from "Odr", meaning "tip of the arrow".
* MrFanservice: He has his share of fangirls. This is at least partly due to his [[{{Catboy}} Lyoko form]]... and the SensualSpandex.
* MultiColoredHair
* TheNicknamer: He's the one that names all the monsters (even complete with XtremeKoolLetterz). 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.
* OutnumberedSibling: Odd reveals in the episode "Distant Memory" that he has five older sisters who bully him.
* ScreamsLikeALittleGirl: It's even worse in the original French version, where he actually ''sounds'' like a kindergarten girl.
* ShipperOnDeck: He is very supportive of Ulrich's relationship with Yumi.
* ShipTease: Often with, [[SlapSlapKiss ironically enough, Sissi]].
* SmallNameBigEgo: As he stated in the aptly-named episode "Bragging Rights".
-->'''Odd:''' Yes, I'm a braggart, and I love it that way!
* StaticCharacter: The most noteworthy example on the show; he ''never'' changes.
* TheyWastedAPerfectlyGoodSandwich: He ''hates'' this trope; he spends the entirety of the episode "Tidal Wave" complaining about not eating.
Lyoko Avatar
* AliceAllusion: Unintended, but it's undeniable that he's got the whole "Cheshire Cat" thing going.
* ArchEnemy: The Megatanks. Lampshaded in the first episode.
* ArmCannon: Lazer Arrows.
* AsideGlance
* BroughtDownToBadass: Even after Jérémie erased his Future Flash power, he is still very competent. Of course, [[WhatKindOfLamePowerIsHeartAnyway the fact his power wasn't of much use to begin with does help]].
* [[CatGirl Cat Boy]]
* CallingYourAttacks: "Lazer Arrows!"
* ChestInsignia: Of Kiwi peeing...
* {{Deflector Shield|s}}: Since Season 2 (and in the prequel as a minor continuity goof).
* FacialMarkings
* FourFingeredHands
* FragileSpeedster: In Season 1. While he has as many HitPoints as anyone else, before Jérémie programs in his shield, he has no defenses except dodging.
* HitPoints
* HoverBoard
* InstantCosplaySurprise: Again, in the prequel, he's the most baffled concerning his Lyoko Avatar:
-->'''Odd:''' I don't dream about giant purple cats!
* OperaGloves
* LeParkour: The undisputed master of it.
* RunningOnAllFours
* PsychicPowers: Future Flash (Season 1).
* SuperReflexes
* TakingTheBullet
* WallCrawl
* WeaponOfChoice: Lazer Arrows.
* [[WhatKindOfLamePowerIsHeartAnyway What Kind of Lame Power Is Future Flash, Anyway?]]: Not only does this power have very limited scope (Odd is the only one unable to use his power at will, and it's worthless in a fight), but the power activating causes Odd to stop moving for a while, making him an easy target. Lampshaded when Odd mentions Jérémie erased it accidentally and never bothered reprogramming it because he felt it was useless. It's actually suggested that he is more effective without it.
Season 4 Avatar
* HardLight: When "translated" on Earth.
* SensualSpandex
* UnusualEars: Cat ears (to complete the feline appearance).
[[/folder]]

[[folder:Yumi Ishiyama]]
'''Yumi Ishiyama'''
[[quoteright:200:http://static.tvtropes.org/pmwiki/pub/images/yumi_9774.png]]
[[caption-width-right:200:[[TheLancer It's like another hero.]]]]

->''"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, [[PrecisionGuidedBoomerang returning to her hand after an attack]]. Yumi also exhibits [[MindOverMatter 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 [[DesignatedVictim single her out for attack]].

* ActionGirl
* BareYourMidriff
* BattleCouple: With Ulrich.
* BrainyBrunette: She is not as smart as Jérémie or Aelita, but she is still quite intelligent.
* CatchPhrase
** "''Banane!''" ("Dork!")
** "''Sympa, l'accueil. Très sympa.''" ("[[SarcasmMode Nice welcome. Very nice.]]")
* CelibateHeroine: Takes this position in Season 3, after deciding that she doesn't want to complicate her working relationship with Ulrich by allowing romance into the equation, and instead resolves to be JustFriends with him until the Lyoko problem is resolved. [[UnresolvedSexualTension It doesn't actually]] [[WillTheyOrWontThey change their situation]] any.
* CoolBigSis
* DeadpanSnarker: Not as much as Ulrich, but when provoked...
* DesignatedVictim: Which can be explained by Yumi being the only one amongst the Lyoko Warriors to not be in pension, making her isolated and as such an easy target for XANA's attacks. One could argue her role as the group's CoolBigSis and the fact she's the most reluctant to keep fighting might help as well, considering [[ManipulativeBastard XANA's habits to play with people's minds]].
* DudeMagnet: For a girl supposely not as remarkable as Sissi, it's amazing how many guys want her. Apart from Ulrich, William, Théo Gauthier, Johnny...
* EveryoneKnowsMorse: She and [[AnnoyingYoungerSibling Hiroki]] learned it to talk in secret at the table.
* FuroScene
* GreenEyedEpiphany
* HeIsNotMyBoyfriend: In regards to Ulrich. She also says this about William, but in this case it is genuine.
* JustFriends: With Ulrich.
* MistakenNationality: "I. ''Am. JAPANESE!!''"
* OneHeadTaller
* OneOfTheBoys
* RavenHairIvorySkin
* ReasonYouSuckSpeech: To William in "The Secret".
-->'''Yumi:''' Because I find your second-rate Casanova act sickening! In the beginning it was pretty nice but now I'm ''really'' fed up! So why don't you buzz off and ''leave me alone''?
* {{Shorttank}}
* {{Tomboy}}
* TomboyAndGirlyGirl: Tomboy to Aelita's and Sissi's Girly Girls.
* TwiceShy: With Ulrich.
* UnresolvedSexualTension: With Ulrich.
* WillTheyOrWontThey: With Ulrich.
* ZettaiRyouiki: Only in the first episode.
Lyoko Avatar
* BoomerangComeback: A favored trick of hers to take out monsters with her throwing fans.
* CombatHandFan: Her weapon of choice. One in season 1, [[DualWielding two from season 2 onward]].
* EverythingsBetterWithSpinning: [[FanNickname Geisha Tornado]].
* {{Geisha}}: Her outfit form seems to be at least partially based on one, altered to fit that of an ActionGirl.
* GiantWaistRibbon
* HitPoints
* JackOfAllStats: Not quite as agile as Odd, effective in close combat as Ulrich or adept at manipulating the environment as Aelita, but able to perform well in all three areas.
* MindOverMatter
* LeParkour
* PrecisionGuidedBoomerang: Her tessen fans can be thrown and always return to her.
* PstandardPsychicPstance
* PsychicPowers: Telekinesis.
* SheFu
* ThreePointLanding: Following some of her acrobatics, including sometimes when just virtualized.
* WeaponOfChoice: Tessen Fan.
Season 4 Avatar
* FingerlessGloves
* FashionableAsymmetry
* HardLight: When "translated" on Earth.
* InstantAwesomeJustAddNinja: Her upgraded costume makes her look more like a Ninja than the previous Geisha.
* {{Opera Glove|s}}
* SensualSpandex
[[/folder]]

[[folder:Jérémie Belpois]]
'''Jérémie''' (Jeremy) '''Belpois'''
[[quoteright:200:http://static.tvtropes.org/pmwiki/pub/images/jeremie_6058.png]]
[[caption-width-right:200:[[TheSmartGuy Too easy.]]]]

->''"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 [[TheUnreveal never been done on camera]] -- something of a LampshadeHanging on the second occasion.

* {{Adorkable}}
* AsYouKnow
* BetaCouple: With Aelita.
* ColorCodedCharacters: Green.
* TheDulcineaEffect: As soon as he meets Aelita and sympathizes with her, he becomes obsessed with finding a way to defeat XANA without having to sacrifice her, despite shutting down the Supercomputer with her still inside being the easier way out. Frequently lampshaded by the other Lyoko-Warriors.
* EveryoneKnowsMorse
* EverythingIsOnline
* GadgeteerGenius: Practically every upgrade, program or device used by the Lyoko-Warriors was created by him.
* GoodCounterpart: Develops into a full-fledged anti-XANA as he gains more experience with the Supercomputer. XANA takes note, since Jérémie seems to be his most hated foe.
* HandBehindHead
* InSeriesNickname: "Einstein"
* TheInsomniac: Frequently spends entire night working on programs to materialize Aelita or improve the Lyoko-Warriors' equipment. In one episode, Aelita finds out he didn't even ''realize'' the night was over.
* LaymansTerms
* TheLeader: Type 1: Mastermind. He directs everyone from the Supercomputer.
* LoveAtFirstSight: Towards Aelita.
* MadScientist: He has his moments. They tend to [[HilarityEnsues backfire]].
* MissionControl
* MrExposition
* {{Nerd}}
* NerdGlasses
* NonActionGuy: Usually, though to be fair, [[ScienceHero he is much more useful at the Supercomputer than on Lyoko]]. Subverted in "Ghost Channel" and in "Maiden Voyage", with a little dose of TheGreatestStoryNeverTold. He himself apparently dislike going on Lyoko.
* OfficialCouple: With Aelita.
* PairTheSmartOnes: With Aelita.
* PlayfulHacker: At first. CharacterDevelopment gradually strips out the "playful" part.
* RapidFireTyping: WildMassGuessing presumes the keyboard on the Lyoko supercomputer has a second Return key in place of the capslock key. That or Jeremie types at a ridiculously high WPM. Or both.
* ScienceHero: He dislikes going on Lyoko, and it's suggested he is a poor fighter anyway. He makes up for it by being the Supercomputer operator and creating most of the upgrades the Lyoko-Warriors use.
* TheShortGuyWithGlasses
* TheSmartGuy: He's the only one who knows how the Supercomputer works or how to get to Sector Five or materialize Aelita; the list goes on.
* SmartPeoplePlayChess
* SpellMyNameWithAnS
* TeamDad
* TechnoBabble
* TechnoWizard
* TeenGenius: He is the youngest member in the team, yet he can build robots and regularly work on a nuclear Supercomputer most real people would have troubles even making work.
* VoiceWithAnInternetConnection: So much so that he now serves as the page image.
* [[WiseBeyondTheirYears Wise Beyond His Years]]
Lyoko Avatar
* TakeOurWordForIt: "He was ridiculous..."
* TheUnreveal: 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.
[[/folder]]

[[folder:Aelita Stones]]
'''Aelita''' (Maya) '''Stones''' (Lyoko / Hopper / Schaeffer)
[[quoteright:200:http://static.tvtropes.org/pmwiki/pub/images/aelita_8678.png]]
[[caption-width-right:200:[[TheChick Follow me, Princess!]]]]

->''"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 DamselInDistress 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 [[HitPoints Life Points]]. She gained the ability to attack with [[EnergyBall spheres of energy]] as well, and [[PowerGivesYouWings obtained wings]] in Season 4 with her new outfit.

* ActionGirl: Initially not, but she start developing traits of it in season 2 and fully becomes one starting with season 3.
* {{Adorkable}}
* ArtificialHuman: [[spoiler:Subverted; the others initially assume she is one, but it's later revealed she's human to begin with.]]
* BadDreams
* BetaCouple: With Jérémie.
* BreakTheCutie: Poor girl just can't catch a break. Aside from the various times where Jeremy almost found a way to materialize her only to fail at the last minute, season 2 ends with TheReveal [[spoiler:she wasn't really an ArtificialHuman, but a real girl whose memory was accidentally erased]]. It gets so bad [[DrivenToSuicide she actually ends up trying to kill herself]].
* CatapultNightmare
* CantLiveWithoutYou: In season 2, XANA manages to ensure that, even if she is outside Lyoko, shutting down the Supercomputer will still result in her death.
* CharacterDevelopment: Lots, to the point that she's arguably the show's central protagonist.
* TheChick
* DamselInDistress: She plays this entirely straight in season 1 (no weapon other than Creativity, and dies if she loses all her life points), almost to the point of being a DamselScrappy. She gets a bit better in season 2, but still finds herself depending upon the other three most of the time. By season 3 she's upgraded to ActionGirl status.
* DesignatedVictim: ''Very'' justified, since she is the key to stop XANA from attacking Earth. As such, it's only natural for XANA to focus on her.
* {{Disney Death}}s: Happen several times.
* DreamingOfThingsToCome
* DrivenToSuicide: At the end of season 2, she tries to commit a HeroicSacrifice by shutting down the Supercomputer. Jeremy manages to save her just in time.
* EverythingsBetterWithPrincesses: She isn't really a princess, but Odd likes to call her one.
* FetalPositionRebirth
* [[GirlInABox Girl in a Computer]]
* GiveGeeksAChance: Jérémie being a geek clearly never was a problem to her.
* [[spoiler:HumanPopsicle: Although not through cryonics -- she didn't age for 10 years while virtualized inside the Supercomputer.]]
* HiddenBuxom: Appears to be surprisingly well-endowed those few times she isn't dressed in heavy, baggy clothing.
* IHaveManyNames: She only has one real name, but has to rely on various fake names in the series. Her current alias is Aelita Stones.
* InSeriesNickname: "Princess"
* [[spoiler:LaserGuidedAmnesia: The reason she started out believing she was just an ArtificialHuman. She gets her memory back at the end of season 2.]]
* LittleMissSnarker: Full-fledged in Seasons 3-4, but there was some present before then.
* TheLoad: Especially in Season 1. Grows out of it throughout Season 2, and ''definitely'' no longer by Season 3.
* MacGuffinGirl: {{Inverted|Trope}}.
* [[spoiler:MadScientistsBeautifulDaughter: She's actually Franz Hopper's daughter.]]
* MagicalGirlfriend: To Jeremy.
* MagicSkirt
* MartyrWithoutACause: Aelita is often a bit too eager to sacrifice herself in Seasons 1 and 2. Sadly {{justified|Trope}} in that it would end XANA's menace once for all. XANA [[ManipulativeBastard even tries to take advantage of this]] in "Missing Link": he uses the Scyphozoa to steal Yumi's DNA sequence code [[BatmanGambit because he knows that Aelita will transfer hers over to Yumi]] (stating that "Yumi's place is on Earth"). This leaves Aelita's memory exposed for him to take at will.
* [[spoiler:MissingMom: Her mother is seen in flashback and has been named by WordOfGod as Anthea, but was kidnapped for unknown reasons by the [=MiB=]. It has still yet to be revealed what she has become.]]
* NeutralFemale: Season 1.
* NoSocialSkills: At first in Season 2, she has little to no idea how the real world works.
* OfficialCouple: With Jérémie.
* [[spoiler:[[OlderThanTheyLook Older than She Looks]]: Aelita is chronologically 23-24, but ten of those years were spent asleep in Lyoko (and another full year in avatar form), so she looks, acts, and is 12-13. Finally confirmed in "Wrong Exposure".]]
* PairTheSmartOnes: With Jérémie.
* PinkMeansFeminine
* PluckyGirl
* PrincessesPreferPink
* RoseHairedSweetie: She fits about all the traits associated with this, though not always at the same time.
* SealedGoodInACan: Season 1.
* SingleWomanSeeksGoodMan: Jérémie
* SmartPeoplePlayChess
* TeenGenius: She rivals Jeremy in that area, though [[MaybeMagicMaybeMundane it's unclear how much is natural and how much comes from her spending years as a program]].
* TomboyAndGirlyGirl: Girly Girl to Yumi's Tomboy.
* TookALevelInBadass: In season 1, Aelita [[DistressedDamsel required Odd, Ulrich and Yumi as bodyguards]], and her only use was deactivating towers. Out of all 26 episodes of season 1, she only destroys ''one'' monster. By season 4, she's the most capable Lyoko Warrior of all -- not only does she have Energy Fields, which are more powerful than any other Lyoko weapon, she also has wings for flight. It's also worth noting that XANA-possessed Aelita has only ever been defeated once....
* TroubledFetalPosition
* UndeadTaxExemption: Averted. The Lyoko Warriors have to do the work to create an identity for her (though Jérémie is very good at "arranging" her paperwork), and there are enough holes in it for Sissi to occasionally piece together that something's going on.
* WhyDidItHaveToBeSnakes: Twice...
** Why Did It Have to Be Wolves?: They feature heavily in her recurring nightmares.
** Why Did It Have to Be the Scyphozoa?: She ''really'' catches the DistressBall whenever it pops in, even in later seasons when she's the most powerful member of the group.
Lyoko Avatar
* CallingYourAttacks
* DecoyGetaway: By creating short-lived clones of herself.
* DeadlyDodging: Her main way of fighting before getting her Energy Fields.
* DetachedSleeves
* DistressBall: Even after becoming an ActionGirl, she always panics whenever the Scyphozoa is involved, and ends up getting possessed. This is particularly frustrating in "Wrong Exposure", where [[HeroicBSOD she forgets that she has wings]], and thus could escape the Scyphozoa by flying away.
* EnergyBall: Seasons 3-4.
* FacialMarkings
* GreenEyes
* HitPoints
* HypnotizeThePrincess
* LotusPosition: Aelita uses this pose when "listening to XANA's pulsations" in Season 1 (and once in season 4).
* NeuroVault
* OneWomanWail: How she invokes her Creativity power.
* OverrideCommand: [[foldercontrol]]

[[folder: Code: LYOKO ]]

* PointyEars
* PsychicPowers: Creativity, Second Sight.
* RealityWarper: Though a rather limited version; she can only manipulate Lyoko's territory.
* SupportPartyMember: Seasons 1-2.

Season 4 Avatar
* TheCaptain: Of the ''Skidbladnir''.
* FingerlessGloves
* {{Flight}}
* HardLight: When "translated" on Earth.
* OperaGloves
* PowerGivesYouWings
* SensualSpandex
* SkirtOverSlacks: A translucent, plastic-like skirt.
* WingedHumanoid
[[/folder]]

[[folder:William Dunbar]]
'''William Dunbar'''
[[quoteright:200:http://static.tvtropes.org/pmwiki/pub/images/william_3298.png]]
[[caption-width-right:200:[[SixthRangerTraitor You sexy idiot.]]]]

->''"I'm not the kind of guy who likes to [[HilariousInHindsight 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 RomanticFalseLead for Yumi and lampshade Ulrich's [[CannotSpitItOut 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 [[PsychicDreamsForEveryone 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. [[SixthRangerTraitor It went downhill from there.]] [[NotHimself Mind-controlled by XANA]] (and [[HulkSpeak 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.

* TheAtoner: Subverted; he attempts to be this in season 4 finale, but is rejected by the Lyoko Warriors. [[spoiler:Played straight in ''Series/CodeLyokoEvolution''.]]
* ChekhovsGunman
* TheDeterminator: He ''never'' gives up on seducing Yumi, even after all that happened by the end of the show.
* FlashbackNightmare: William has dreams about things that should have been erased with the Return to the Past -- one of the factors that led to his becoming a Lyoko Warrior.
* HeelFaceDoorSlam: Sadly, after freeing him, all Lyoko Warriors but Aelita have difficulties forgiving him for what he did under XANA's control (despite Aelita pointing out [[NotHimself it wasn't his fault]] and it could have happened to any of them). It goes as far as when he attempts to redeem himself by helping them, Yumi violently rejects him and refuses he'd come on Lyoko, arguing XANA might seize the opportunity to control him again. [[spoiler:[[NiceJobBreakingItHero Ironically, this is exactly what happens... except XANA is able to control him through a tower because he is still on Earth. Nice job, Yumi!]]]]
* LeeroyJenkins: This is what causes him to end up possessed by XANA.
* LoveMakesYouCrazy: "Makes me totally insane."
* MrFanservice
* NewTransferStudent
* PromotionToOpeningTitles: When he becomes a villain.
* ReformedButRejected: In the finale.
* RomanticFalseLead: To Yumi. In his first appearance, she seems to give back some of his feelings, but she gets annoyed by his StalkerWithACrush attitude as the show goes on. By season 3, it's made quite clear he never had any chance with her to begin with.
* SixthRanger → SixthRangerTraitor
* StalkerWithACrush
Lyoko Avatar
* AllYourPowersCombined: His SuperSmoke power allows him to move as fast as Ulrich, fly like Aelita and can be used the same way as Yumi's telekinesis. Plus, he possess a hand-to-hand weapon that can shoot RazorWind, and a buckler-like bracer to deflect and return attacks.
* BattleCry: "FOR XANA!"
* BrainwashedAndCrazy
* CoolSword: He uses a ''VideoGame/FinalFantasy''-style Buster Sword.
* TheDragon: To XANA.
* EvilCostumeSwitch
* FacialMarkings: An Eye of XANA on the forehead.
* FetalPositionRebirth
* FingerlessGloves
* HardLight: When "translated" on Earth.
* HitPoints
* HulkSpeak: His usual speech when under XANA, though he does have actual sentences occasionally.
* HydePlaysJekyll: Does it twice to trick Aelita, with remarkably successful results.
* MarkOfTheBeast: The Eye of XANA.
* NonchalantDodge
* PowerFloats
* PsychicPowers: [[MindOverMatter Telekinesis]], Far Sight.
* SensualSpandex
* SuperSmoke: TropeNamer.
* SwordBeam / RazorWind
* SwordDrag
* ThemeMusicPowerUp
* TookALevelInBadass / TookALevelInJerkass: Oddly enough, his fanbase got much bigger after this. Granted, he went from [[DieForOurShip an annoying rival to Ulrich]] to a [[EvilIsCool badass villain]], so that might be actually understandable.
* VoiceOfTheLegion
* WeaponOfChoice: {{BFS}}.
[[/folder]]

!Villains

[[folder:XANA]]
'''XANA''' (X.A.N.A.)
[[quoteright:200:http://static.tvtropes.org/pmwiki/pub/images/xana_3851.png]]
[[caption-width-right:200:[[BigBad Instant evil]], [[FacelessEye just add symbol]].]]

->''[[LogicBomb "NOT LOGICAL!]] [[VoiceOfTheLegion NOT LOGICAL!"]]''

This malevolent A.I. is the [[BigBad main antagonist]]. Created by Franz Hopper to counter "Project Carthage", he [[TurnedAgainstTheirMasters rebelled against his creator]] and was [[SealedEvilInACan 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 [[HeWhoMustNotBeSeen 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 [[CutTheJuice cutting the juice]], and after doing so he attempts to conquer the world in Season 4 by creating an [[MechaMooks army of robots]].

* AIIsACrapshoot
* ArchEnemy: To the Lyoko Warriors and Franz Hopper.
* [[spoiler:TheBadGuyWins: 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).]]
* BigBad
* CharacterDevelopment: 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 GenericDoomsdayVillain in season 1 to a skilled MagnificentBastard by the end of the show.
* TheChessmaster: Not as much initially, but as the series progresses, he starts developing more complex schemes.
* TheCracker
* CrazyPrepared: [[spoiler:The Lyoko Warriors are attempting to destroy his [[SoulJar Replikas' supercomputers]] in order to cut down his resources? He has infected ''hundreds'' of them all over the world.]]
* DangerouslyGenreSavvy: He usually plans everything that can logically be planned, and, when he does make a mistake, he learns from it.
* EnemyMine: In "Marabounta" with the Lyoko Warriors.
* [[EvilCannotComprehendGood 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 [[PlayfulHacker 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 HeroicSacrifice and takes advantage on it to pull out a BatmanGambit.
* EvilPlan: 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.
* FacelessEye: His trademark symbol.
* HeWhoMustNotBeSeen: He doesn't even ''have'' a body to begin with.
* InstantAIJustAddWater: Justified, Franz made XANA and gave him the ability to evolve, before he learned that XANA was becoming too smart.
* ManipulativeBastard: 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 MagnificentBastard level.
* MasterComputer: Seasons 1-2.
* NobleDemon: Tend to change a lot DependingOnTheWriter, 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.
** [[spoiler: ... 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.
* NothingIsScarier: ''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.
* PowersThatBe
* RedAndBlackAndEvilAllOver
* SealedEvilInACan: 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.
* SlidingScaleOfRobotIntelligence: Nobel (to maybe Godlike by Season 4).
* SoulJar: His Replikas' supercomputers in season 4 serve as this to him.
* [[TurnedAgainstTheirMasters Turned Against His Master]]
* UltimateEvil
* VillainousBreakdown: Has one toward the end of Season 1, in the episode "Ghost Channel", where the above quote comes from.
* TheVoiceless: With the exception of the parts in "Ghost Channel" [[spoiler:where he impersonnate Jérémie]] and "Franz Hopper" [[spoiler: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.
* [[{{Pun}} XANA]][[XanatosGambit tos-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.
[[/folder]]

[[folder:Lyoko Monsters]]
'''Lyoko Monsters'''
[[quoteright:200:http://static.tvtropes.org/pmwiki/pub/images/monster_8767.png]]
[[caption-width-right:200: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.
* ''Roachsters''[[note]]Season one only, Kankrelats from season two on[[/note]] (''Kankrelats'') -- As close to TheGoomba 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 ZergRush tactics; their small size also allow them to hide and act as [[ColdSniper snipers]]. The first of two monsters to be fielded in the real world (in "False Start"). Quickly evolved into the PluckyComicRelief among the monsters with their tendency for being TooDumbToLive.
* ''Hornets'' (''Frelions'') -- The AirborneMooks of Lyoko, looking like giant wasps with ten wings. They fly around, shoot lasers from their stingers, drip acid at close range ([[EarlyInstallmentWeirdness 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".
* ''[[GiantEnemyCrab 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 [[IndyEscape crush any unlucky hero in their path]].
* ''Tarantulas'' (''Tarentules'') -- XANA's apparent first attempt at [[MinMaxing 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 [[ArmCannon laser cannon stubs on their arms]].
* ''Scyphozoa'' (''la Méduse'') -- XANA's first [[TheDragon Dragon]], looking like a levitating giant jellyfish. It eschews direct attacking for wrapping its tentacles around Aelita and attempting to crack her NeuroVault open. Other notable targets include Yumi (to force a variant FriendOrIdolDecision 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 WallCrawl 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 LudicrousGibs.
* ''Mantas'' -- White-and-blue manta rays [[FlyingSeafoodSpecial that "swim" through the air]] and [[NoisyNature shriek like hawks]]. As if XANA didn't have enough air superiority, these {{Giant Flyer}}s 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 MoreTeethThanTheOsmondFamily.
* ''Sharks'' (''Rekins'') -- [[EverythingsEvenWorseWithSharks 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 [[ThisIsADrill drill]] through the ''Skid'''s hull.
* ''Kolossus'' (''le Kolosse'') -- XANA's last-minute GiantMook, appearing as a towering [[VolcanicVeins Lava]] {{Golem}} with [[BladeBelowTheShoulder 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 ''WesternAnimation/CodeLyoko'' video games give XANA several extra additions to its bestiary, from lanky ''Insekts'' to hardy ''Volcanoids'' to the first DS game's FinalExamBoss ''Scorpion''.

** ArtificialStupidity: The monsters occasionally commit ridiculous mistakes, sometimes even shooting each other. This is lampshaded in "Marabounta", where Odd, while [[spoiler:giving instructions to some of the Blocks XANA sent to help them against the Marabounta]], mentions that "the only thing stupider than one Blok is two Bloks".
** AttackItsWeakPoint: No matter how much life points they have, it is possible to [[OneHitKill kill them instantly]] if you manage to hit the part of their body marked with the Eye of XANA. The only known exceptions to this rule are the Kolossus (who [[spoiler:you need to hit on ''both'' of his two marks]]) and the Scyphozoa.
** DefeatEqualsExplosion
** EpilepticFlashingLights: Whenever they're wounded.
** FrickinLaserBeams: All monsters, with the exception of the uniques ones (Scyphozoa, Kalamar, Kolossus), primarily attack that way. Apart from the Kankrelats, they have other modes of attack.
** HitPoints
** ImperialStormtrooperMarksmanshipAcademy: They ''do'' gets some shot to the heroes, and even sometimes succeeds in devirtualizing them, but most of the time, they miss their target, especially when said target is Aelita.
** TheJuggernaut: The Kolossus.
** NiceJobFixingItVillain: It has happened for the monsters to keep firing on a hero about to fall in the Digital Sea -- thus saving him or her from being stuck by timely devirtualization.
** MechaMooks
** NoBodyLeftBehind
** PowersAsPrograms
** RoboCam
** SlidingScaleOfRobotIntelligence: Bricks (except the Scyphozoa).
* TheSpeechless: They do not seem to have human intelligence, and do not speak beside shrieking, roaring or other unintelligible sounds.
** SuperDrowningSkills: 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.
** WeHaveReserves: XANA can create as much of them as he wants, so he has no qualm about sacrificing them if necessary.
** XtremeKoolLetterz
[[/folder]]

[[folder:Specters]]
'''Specters'''
[[quoteright:200:http://static.tvtropes.org/pmwiki/pub/images/specter_9774.png]]
[[caption-width-right:200: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 [[BodySnatcher taking over animals or even humans]]. The possessed ones (often labeled as "[=XANAfied=]") can be recognized by the [[MindControlEyes XANA symbol in their eyes]]. The Specters confer them some special powers, like NighInvulnerability (they can still be knocked out if taken by surprise, and are vulnerable to electricity or EMP), SuperStrength, WallCrawl, ShockAndAwe... and [[NewPowersAsThePlotDemands 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.

* BodySnatcher
* GlamourFailure
* HulkSpeak: Sometimes; some of them have been shown to be perfectly able to deliver real sentences. Most often, it just seems like XANA doesn't feel like wasting time to make them talk.
* IntangibleMan
* MindControlEyes
* NighInvulnerability
* RoboCam
* ShockAndAwe
* SlidingScaleOfRobotIntelligence: Monkey to Average-Joe.
* SpeedEchoes
* SuperStrength
* VoiceOfTheLegion
* WalkOnWater
* WallCrawl
* WetwareBody
[[/folder]]

[[folder: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 [[VoluntaryShapeshifting 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 [[ReplacementGoldfish 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 KidAnova, while the William Clone is [[TheDitz dumb as a sack of bricks]].

* ArtificialHuman
* CharacterizationMarchesOn: The prototype Clone in season 1 couldn't shapeshift and was rather terrible at impersonating Yumi, blowing its cover rather quickly. By season 2, XANA seems to have perfected them, and they are more than capable to fool not only the civilians, but also sometimes the Lyoko-Warrios themselves.
* {{Doppelganger}}
* GlamourFailure
* {{Foreshadowing}}: The Polymorphic Clones technically didn't appear until season 2, but season 1 had an episode where XANA did try something of a prototype by sending a Specter assuming the appearance of Yumi on Earth while the real Yumi was kept inside a Guardian.
* HardLight
* HellishPupils
* HulkSpeak: Averted; most Polymorphic Clones that have been seen could formule perfect sentences if needed, and just growled while fighting.
* IntangibleMan
* KissMeImVirtual
* NighInvulnerability
* RoboCam
* ShockAndAwe
* SlidingScaleOfRobotIntelligence: Average-Joe (though William's is more of a Monkey).
* SpeedEchoes
* SpotTheImposter
* SuperSmoke
* SuperStrength
* VoiceOfTheLegion
* VoluntaryShapeshifting
[[/folder]]

!Kadic Academy

[[folder:In General]]
* AdultsAreUseless: Usually played straight, but adverted with Jim, who occasionally helps a lot [[spoiler:(the season 1 finale being the best example)]], and Franz Hopper, whose position as the BigGood ensure him being useful.
* BoardingSchool
* JuniorHigh
* MeaningfulName: "Kadic", for sci-fi author Creator/PhilipKDick.
[[/folder]]

[[folder:Élisabeth "Sissi" Delmas]]
'''Élisabeth''' (Elizabeth) '''"Sissi" Delmas'''
[[quoteright:200:http://static.tvtropes.org/pmwiki/pub/images/sissi_6286.png]]
[[caption-width-right:200:[[HopelessSuitor ULRIIII]][[CatchPhrase IIIICH!]]]]

->''"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) [[UnluckyChildhoodFriend they'd known each other since childhood]]. To separate Ulrich from Yumi ([[JustFriends 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 AbsurdlyPowerfulStudentCouncil 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. [[ShipTease 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.

* AbhorrentAdmirer: A toned-down example toward Ulrich; unlike the usual, he doesn't reject her because she is ugly (she is actually quite attractive), but because he feels she is a BrainlessBeauty and an extremely annoying StalkerWithACrush.
* AbsurdlyPowerfulStudentCouncil
* ActionSurvivor: Just try to count the numerous XANA attacks she was directly involved in that she survived.
* AlphaBitch: Though becomes a LovableAlphaBitch through CharacterDevelopment.
* BareYourMidriff
* BathingBeauty: She is said to take up to three showers a day, and she spends lots of time in them.
* [[BigBrotherInstinct Big Sister Instinct]]: As often as she picks on them, Sissi is actually very protective of Milly and Tamiya during XANA's attacks. "Attack of the Zombies" makes a point of this.
* BrainlessBeauty: Or so she comes across; she's actually smarter than she seems.
* BrattyTeenageDaughter
* ButtMonkey
* CatchPhrase: "Cretin(s)!"
* CharacterDevelopment: Becomes a progressively better person throughout seasons 1, 2, and 4 ([[DemotedToExtra not so much season 3.]])
* ClingyJealousGirl
* DefrostingIceQueen
* DemotedToExtra: In Season 3 and 4, especially 3 (she becomes relevant again late into Season 4).
* DependingOnTheWriter: The level of sympathy her character is treated with changes from episode to episode; shown moreso in Seasons 2 and 4 (where she was sympathetic in the majority of her appearances) than 1 and 3 (where she... wasn't, though she did have moments in 1.)
* DoNotCallMePaul: "It's ''Sissi''! Not ''Élisabeth''!"
* DungeonmastersGirlfriend
* GreenEyedMonster
* HairDecorations: Her headband.
* HopelessSuitor
* HormoneAddledTeenager
* InformedAttribute: Stated by Ulrich to be a DudeMagnet in the prequel; however, the number of boys seen actually hitting on her onscreen doesn't exceed three (Two of them being [[KidAnova Odd]] and [[AbhorrentAdmirer Hervé]], and the third being a one-shot character who forgot about her as soon as he saw Yumi), and minor characters have been shown to be pretty aware of her being a BrainlessBeauty. In fact, Yumi technically got more attention from boys than she did.
* JerkWithAHeartOfGold
* LittleMissSnarker
* LingerieScene
* TheLoad: Sometimes, but [[SubvertedTrope sometimes not]]; it all depends on the situation.
* LovableAlphaBitch
* LoveDodecahedron: At least three sides of it.
* {{Malaproper}}
* MissingMom: {{Word of God}} states that Sissi's mother is alive, but lives away from Sissi and her father. She is never seen or mentioned in the show.
* MsFanservice
* [[OnlyKnownByTheirNickname Only Known by Her Nickname]]: Only adults ever call her "Élisabeth", and she hates that. Everybody else calls her "Sissi".
* OutOfFocus: From Season 3 up until near the end of Season 4 (when the gang's suspicious activities increases to such a level that she can't ignore it anymore).
* ScreamingWoman: Played straight when she's confronted to XANA's latest attack. Parodied in "End of Take", where "AAAAAHH" is her sole line in James Finson's movie.
* ShipTease: With Odd, particularly in Season 2's "Déjà Vu" and Season 4's "Kadic Bombshell" and "Bad Connection".
* SkirtOverSlacks
* SpoiledBrat
* SpoiledSweet: Sometimes, particularly in the prequel two-parter and later the ending. Basically, the entire Lyoko/XANA incident wasn't good for her personality, which was better before ''and'' after it.
* StalkerWithACrush
* ThrowTheDogABone: On occasion, and [[spoiler:in the final episode, when the gang at last decides to make her an "official" friend. Also counts as EarnYourHappyEnding, as it feels like an ultimate reward for all the multiple times she's helped out but doesn't remember.]]
* TomboyAndGirlyGirl: A rival ([[UnknownRival sort of]]) case with Yumi.
* UnknownRival: Yumi is mature enough to realize that Sissi is a HopelessSuitor, and thus a rivalry between them is barely acknowledged on her part.
* UnluckyChildhoodFriend: She knows Ulrich and has a crush on him since ''Nursery School''. Though the "friend" part remains unconfirmed, seeing how Ulrich didn't seem in good terms with her in the prequel.
[[/folder]]

[[folder:Jim Moralès]]
'''Jim Moralès'''
[[quoteright:200:http://static.tvtropes.org/pmwiki/pub/images/jimbo_4669.png]]
[[caption-width-right:200:[[MemeticMutation Not talking at the moment.]]]]

->''"[[SubvertedTrope 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 [[DepartmentOfRedundancyDepartment redundancies]] and [[{{Malaproper}} malapropisms]], he's most often the [[PluckyComicRelief comic relief]]. But when [[LetsGetDangerous things get dangerous]] he can prove [[CrouchingMoronHiddenBadass extremely courageous]] and [[JerkWithAHeartOfGold fiercely protective of the children]]. Jim is sometimes the [[ButtMonkey butt of the students' practical jokes]], and as a result can be [[DrillSergeantNasty 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 [[ResetButton Returns to the Past]]. Starting with Season 2, whenever appropriate to the situation, his shtick is to mention one of the [[WhyDoYouKeepChangingJobs many jobs or hobbies]] he's supposed to have done in the past, from sewer worker to astronaut.... Though [[NoodleIncident some of these might be true]], most are probably [[TheMunchausen wild exaggerations]], as suggested in the episode named for his CatchPhrase.

* BadassTeacher: He doesn't appear to be one at first glance, but he can be.
* ButtMonkey: Even more so than Odd.
* CatchPhrase: "I'd rather not talk about it", when referring to the various jobs he had.
* CrouchingMoronHiddenBadass: Most of time, he is portrayed as goofy, clumsy and a bit stupid, to the point even the students don't take him seriously. When given the chance, however, he can actually be competent.
* DepartmentOfRedundancyDepartment
* DrillSergeantNasty: Possibly a parody. Apparently, he firmly believes he is this, forgetting he is just a gym teacher.
* ExpansionPackPast
* GratuitousDiscoSequence
* IMinoredInTropology
* JerkWithAHeartOfGold: Brash, hot-blooded, almost always angry, but he does care about the well-being of his students.
* LetsGetDangerous
* {{Malaproper}}
* TheMunchausen
* NoodleIncident: Over the span of his career... too many to count.
* PapaWolf: The students may not actually be his children but they're his students and by golly, he's going to protect them!
* PluckyComicRelief
* PointlessBandAid
* ProperlyParanoid: He is firmly convinced the Lyoko-Warriors are doing something behind everyone's back, an impression Delmas only sees as paranoia.
* SixthRanger: Temporarily, at the end of Season 1. But then he gets his memory erased when the gang go back in time.
* WhyDoYouKeepChangingJobs: Sure, Jim has a stable job ''now'', but he's had ''21'' different ones in the past, from from sewer worker to basketball star to safecracker--ahem--'''locksmith''' to ''professional ping-pong player''. All but a few of which he'd [[CatchPhrase rather not talk about]], and all in addition to '''20 years''' at Kadic.
[[/folder]]

[[folder:Hiroki Ishiyama]]
'''Hiroki Ishiyama'''
[[quoteright:200:http://static.tvtropes.org/pmwiki/pub/images/hiroki_9472.png]]
[[caption-width-right:200:The only AnnoyingYoungerSibling so far.]]

->''"YUUUUMIII, your boyfriend is here!"''

->Voiced by: Barbara Weber-Scaff

[[AnnoyingYoungerSibling Yumi's younger brother]], appearing in Season 2 and joining the 6th grade at Kadic at the start of Season 3. He shows some [[HeroWorshipper 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. [[TagalongKid 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.

* AnnoyingYoungerSibling: His sole role seems to be teasing Yumi about her relationship with Ulrich. To say she finds this annoying would be an understatement.
* BrattyHalfPint
* EveryoneKnowsMorse: He does have an excuse for this, though; he and Yumi learned it to talk in secret at the table.
* RememberTheNewGuy: 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.
* ShipperOnDeck: Of his sister and Ulrich, though it's mostly about teasing her.
* TagalongKid
* YoungEntrepreneur
[[/folder]]

[[folder:Franz Hopper]]
'''Franz Hopper''' '''[[spoiler:/ Waldo Schaeffer]]'''
[[quoteright:200:http://static.tvtropes.org/pmwiki/pub/images/Franz_Hopper_4963.jpg]]
[[caption-width-right:200:[[BigGood The man by whom everything started.]]]]

->''"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, and the creator of the Supercomputer, Lyoko and XANA. His real name is [[spoiler:Waldo Schaeffer]]. 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. ''[[BigBad 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.
* BallOfLightTransformation: Unlike other, rather than taking the form of a humanoid DigitalAvatar, Franz Hopper is permanently virtualized on Lyoko under the shape of a brilliant ball of light.
* BigGood
* ColorCodedCharacters: White.
* HeroicSacrifice: [[spoiler:Allows himself to be killed by Mantas while he diverts enough power to the Supercomputer to launch the Anti-XANA Program.]]
* TheObiWan: He serves this function to Jérémie, helping him to refine his programming and giving him data and better weapons with which to fight XANA.
* OpaqueNerdGlasses
* PapaWolf: XANA [[DangerouslyGenreSavvy knows it]].
* PhlebotinumRebel: Franz Hopper created XANA to destroy "Project Carthage", which he was previously working on.
* TheProfessor
* ProperlyParanoid: He suspected agents were following him while he was working on the Supercomputer. He was right.
* RealNameAsAnAlias: [[spoiler:Waldo Schaefer]], a.k.a. Franz Hopper, changed his monicker for his middle name and the maiden name of his wife.
* StayingAlive: In three season finales, [[spoiler:he sacrifices himself for Aelita. [[KilledOffForReal The third time seems definitive.]]]]
* TranshumanAliens: Hopper is permanently virtualized into Lyoko, and his avatar is a brilliant ball of light, rather than a humanoid like the other Lyoko Warriors.
* MadScientist: He built the Supercomputer, Lyoko and XANA on his own.
* VirtualGhost: Franz never bothered taking a corporeal form on Lyoko.
* TheVoiceless: 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.
[[/folder]]

[[folder:William's Clone]]
'''William's Clone'''
[[quoteright:200:http://static.tvtropes.org/pmwiki/pub/images/awwwww_1449.png]]
[[caption-width-right:200: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 LiteralMinded [[TheDitz 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.

* ArtificialHuman
* CannotTellALie: He was never programmed to lie, so his answers are always truthful -- although still [[LiteralMinded literal]] and confusing.
* CloningBlues: Averted. He's not self-aware enough to care that he's just a replacement doomed to disappear when the true William comes back.
* TheDitz: His artificial intelligence isn't quite advanced enough to make him act normal.
* {{Doppelganger}}
* HardLight
* LiteralMinded
* OtherMeAnnoysMe: 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.
* ReplacementGoldfish: He tends to exemplify the "Goldfish" part more than the "Replacement" part.
* TechnoBabble: The above quote.
* UndyingLoyalty: 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).
[[/folder]]

[[folder:Kiwi]]
'''Kiwi'''
[[quoteright:320:http://static.tvtropes.org/pmwiki/pub/images/kiwi_5562.jpg]]
[[caption-width-right:320:[[TeamPet Friendly]], [[UndyingLoyalty loyal]], and a WalkingDisasterArea. [[ToiletHumor Housetraining not included]].]]

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.

* DogsAreDumb: If Jérémie's opinion is anything to go by.
* LoopholeAbuse: 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.
* OpenSecret: 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.
* RidiculouslyCuteCritter
* RobotMe: Kiwi has a robot duplicate built by Jérémie.
* TeamPet: To the Lyoko Warriors.
[[/folder]]
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