For tropes that apply to these characters in both series, as well as more detailed biographies of characters from the first series, please refer to the Code Lyoko character page. Characters from Code Lyoko will not be listed here until they are confirmed to appear in Code Lyoko: Evolution.
The Lyoko Warriors
At the end of Season 4, XANA implanted one of his source codes in Ulrich's body, and as a result he can now deactivate towers. On a personal level, he is still trying to confess his affections to Yumi, and is still jealous of William for his efforts to get Yumi's attention.
- Doppelgänger Attack: After a long period of disuse dating back to the second episode of the original show's 4th season, Ulrich's Triplicate power makes a comeback to help dispatch a Ninja in episode 14.
- Embarrassing Rescue: William rescues Ulrich after a laser blast almost pushes him into the Digital Sea.
- Hero Stole My Bike: William uses the Overbike in the fifth episode just to get on his nerves.
- Moment Killer: Had this happen to him at least three times in the first episode.
- The Rival: With William. There was even a whole episode about it. Both seem to have gotten over it, though.
Odd Della Robbia
Odd is slightly more mature in the new series, but is still be a source of humor. He can now fire six arrows at once on Lyoko. Kiwi is no longer living with him, having been left in the care of his sisters. He is overjoyed to be back on Lyoko. He also has XANA's source codes in his body, and can also deactivate towers.
- Adaptation Dye-Job: The live-action Odd has light brown hair, rather than in the previous series where he had blonde hair. That hairstyle is retained for his 3D form, and he does keep his purple spot in both forms, but it is moved further down his head so it looks more natural (i.e., growing from the roots).
- Beware the Silly Ones: Arguably even moreso than before, giving him more this vibe than Crouching Moron, Hidden Badass. As mentioned above, Odd is a bit more mature in this series, and can snap from silly and funny to showing his experience seriously and earnestly on a dime, and he often somehow does both simultaneously. Across the season, he comes off as the team's unofficial cavalry once or twice because of it (which he lampshades a couple times).
- Butt-Monkey: Amazingly even moreso than he was in the original show; he gets the most frequently victim of the Spectres' attacks, his dating life is getting messed up, William has no respect for him...
- Drives Like Crazy: In the Megapod.
- Headbutting Heroes: With William, after William locks him in a forbidden part of the cafeteria. They later reconcile though.
- Hypocrite: He criticized William for "going solo". Yet, in episode 6, when William is devirtualized after having saved Aelita, he congratulates him, claiming that it is better when he isn't going solo...Forgetting that the entire success of the whole mission was due to William alone.
- Kid-anova: Like his original series self... however, the few we have seen of it so far suggest he doesn't really have that much success.
- The Masquerade Will Kill Your Dating Life: Being a Lyoko Warrior has disastrous effects on his relationship with Samantha.
- Neologism: In episode 12, he bemoans that Laura became "un-returntothepastifiable".
- Sad Clown: While having lost all of his codes. He makes with the jokes even when it's brought up (usually by him), but he's clearly very bitter about it.
- Took a Level in Badass: On Lyoko, he can now fires full bursts of laser arrows instead of just one. He is also shown to be slighly less fun-loving and more serious and professional on Lyoko, much like Season 1.
- The Unintelligible: In episode 7, being drained by a Spectre make him temporarily lose the capacity for coherent speech. Hilarity Ensues.
Yumi receives a new weapon, the "Bow Staff", and her Overwing has been modified. She can deactivate towers now, just as Odd and Ulrich do.
- All-Loving Hero: A trait that wasn't developed in her original incarnation, this version of Yumi displays concern with helping people outside of the virtual. She attempts to make a caricative party in order to send the money to victims in Japan, and, when asked what she would do if the won millions, answers she would just give everything to associations.
- Big "NO!": When Aelita gets devirtualized and she finds herself facing two Ninjas alone.
- Hell-Bent for Leather: One of her outfits involves a leather jacket.
- Retractable Weapon: Gets the "Bow Staff", a telescoping staff, in episode 10.
Jérémie reprises his role as the Supercomputer's main operator, and is now dedicating his time to figuring out new ways for his friends to navigate the Cortex and avoid XANA's specters.
- Idiot Ball: He and Aelita suffer a drop in IQ whenever Laura is involved. Taken to ridiculous extreme when he fails to notice she has been reading the Return to the Past codes and modified the virus she conceived for them so it would protect her memory from it, all of this right under his nose. And that's just the beginning; a lot of episodes have Aelita and Jérémie acting outright incompetent just so the episode can have Laura show up. Averted in later episodes though, the end of episode 12 showing him to still be the smartest out of the two. This trope even plays on Laura in episode 22, as she is unable to program the Megapod.
- The Leader: He has grown into this role even moreso than before. He's become more assertive and authoritative when it comes to keeping the others in line and together in missions, and they automatically look to his determination and resolve for answers even outside of tech-based problems.
- Limited Wardrobe: In a sense. While Jérémie does wear different outfits each episode, they all happen to be khaki pants and plaid shirts.
- Mr. Exposition: Like in the original series.
- Took a Level in Badass: Back in Season 4, it took him months to create the Skid. In Evolution, he can do it in days.
- Took a Level in Jerkass: Jérémie is rather more abrasive in this series, and even more obsessed with Lyoko than ever before.
Aelita is the one that makes the decision to turn the Supercomputer back on after witnessing XANA-like electrical phenomena at Kadic. She finds a picture of her father in the Cortex, and is from that moment determined to find out why it is there. She is jealous of Laura's presence on the team.
- Deflector Shields: Aelita had already demonstrated the ability to create shields in the original series, but here they prove even more versatile. She use one to protect the megapod in "Madame Einstein", and another to reveal the Invisible Monster in "Rivalités". She can't maintain them against the superior firepower of the wall of Bloks in "Compte à rebours", though.
- Green-Eyed Monster: Towards Laura. In "Miss Einstein", she unilaterally decided to prevent Laura from joining the group by activating the RTTP, which she makes pretty clear to Odd is mostly out of jealousy.
- Talking to the Dead: She gets into the habit of talking to her departed father while on Lyoko.
- Took a Level in Jerkass: Contrary to her personality in the previous series, this version of Aelita is considerably more aggressive, to the extent that, when the team attempts to vote on whether to include Laura or not, she preempts the vote and activates the RTTP. She gets called out on it by Odd, but it's pretty clear she doesn't feel guilty about it. This might be justified by the fact that her father died in the season finale of the last series (hence no real development on that front), but it's still quite the change in behavior. She is also more sullen and driven in general, to the point of being abrasive at times. Also, see her attitude in "Rendez-Vous".
Post-possession, William has effectively been kicked out of the Lyoko Warriors for his actions in Code Lyoko, (despite the fact that it wasn't his fault), as the others make a point of not inviting him to the factory when duty calls. This has enraged him on multiple occasions, and he will go to the factory on his own and demand to be taken to Lyoko when he suspects that they are there without him. He has proven a capable fighter on Lyoko, and is finally accepted back into the team in episode 5.
- The Ace: He is by far the strongest Lyoko-Warrior.
- The Atoner: Let's just say he works hard to make up for his rampages as XANA's Dragon.
- Dark Is Not Evil: Despite now being on the side of the Lyoko-Warriors, William retains his black, XANA-era costume and Super Smoke power.
- The Determinator: He still isn't giving up on Yumi. He even delivers a speech to Odd about how it's never a good idea to give up.
- Eerie Pale-Skinned Brunette: Turned Up to Eleven on Lyoko, where his skin has a blue tint.
- Faustian Rebellion: William has all his XANA-granted abilities with none of the forced servitude after being freed in the previous series.
- Good Costume Switch: Averted. Despite switching back to the good guys his outfit remains very similar to his evil one, although it lacks the XANA symbol and corset.
- Jerk with a Heart of Gold: Despite his antagonism with Ulrich, he still choses to try convincing the Stern boy to do the right thing after he argued with Yumi. He also confess that his new level in Jerkass was because he was frustrated to be seen as the bad guy.
- Leeroy Jenkins: A lot less so than he was the first time he went on Lyoko, but he still has his moments. In "Compte à rebours", his attitude causes Yumi and him to be quickly defeated by a wall of Bloks.
- Master of All: This is even more ridiculous than in Season 4. He can't fall in the Digital Sea and is the only Lyoko-warrior that can move through the Cortex without any trouble (both thanks to the Super Smoke), every single one of his attacks is a finisher if successful, the Super Smoke makes him faster than Ulrich's Super Sprint and his sword, lighter, is even deadlier. Should we mention that he can send flying both monsters and Lyoko-warriors?
- Pet the Dog: Subverted. He is the only Lyoko-warrior who never minded Laura nor was hostile to her. Even when she manipulated him, he merely warned her of the consequences, remained silent when she was kicked out and was the only one of the group who didn't raise his hand when they voted to kick out Laura. This tacit sympathy led a few fans to pair him with Laura.
- Reformed, but Rejected: He definitely is reformed, but the Lyoko Warriors aren't much more forgiving toward him than they were at the end of season 4 of the original show; it takes five episodes for him to be truly reintegrated to the team, much to his dismay.
- Sixth Ranger: Now on a permanent basis.
- Sixth Ranger Traitor: Almost happened in episode 15, when his clone almost succeeds in persuading him to join XANA.
- Super Smoke: The Trope Namer. Still possesses it and his other powers.
- The Team Normal: Not in the sense that he doesn't have any powers (on the contrary, actually), but he is the only one in the team with no XANA code inside him (ironically), and as such can't deactivate towers.
- Took a Level in Badass: On Lyoko, William's sword, while not so-BFS anymore, is not only lighter but even more powerful than in the original series. While in Season 4, William's swords attacks weren't always One-Hit Kill (A Krab survived having it's legs cut in episode 69 and Odd survived a direct blow in episode 79), every single one of his successful sword attacks is an instant kill in Evolution.
- Took a Level in Jerkass: William in the original series could be a bit aggressive toward Ulrich when it was about Yumi, but was otherwise a relatively nice guy before XANA possessed him. Here, however, he is bitter about not being accepted by the Lyoko Warriors, leading him to act a bit unsympathetic on occasions. Even after being back on the team, he still acts a lot more antagonistic toward Ulrich than he used to. This is toned down starting with episode 6, but he still has some moments of being a big jerk.
- Took a Level in Kindness: Conversely, William's nice moments are surprisingly better than in the original series. Highlights includes the entire episode 6, his aforementioned behavior towards Laura, his friendship with Ulrich (this is especially notable in "Friday the 13th" where both of them are having fun against the Mantas) and he lost his Stalker with a Crush tendencies.
- Why Did It Have to Be Snakes?: Understandably considering his past experience, he is absolutely terrified when he finds himself confronted with the Scyphozoa alone for a second time, to the point he begs Laura to immediately devirtualize him, and tries to do it himself when she fails to follow his request.
A New Transfer Student introduced in "Madame Einstein". Laura is basically a feminine alter-ego of Jérémie — she's a giant nerd and a big fan of video games (programming them, not playing them). She's curious and ambitious, and slowly integrates herself into the group, causing Aelita to grow jealous of her.
- Audience Surrogate: The main reason she was added to the cast was to create a character that would be unfamiliar with Lyoko and ask questions, allowing the new watchers unfamiliar with Code Lyoko to catch up.
- Bad Liar: While every Lyoko-warrior is known for being bad liars, Laura is the worst. When Mr. Graven does interviews in episode 17, trying to track down people with knowledge of quantum physics through the use of a test, Laura lies about the subject only to correctly answer a following question which would require expertise in it. It doesn't take him long to get to her after that, though Aelita steps in before she agrees to anything.
- Batman Gambit: In episode 12, Laura brings her father to the factory, expecting the rest of the team to launch a Return to the Past to erase her father's memory and the damage caused by XANA's attacks, thus preventing her father from forcibly removing her from Kadic. Her plan works.
- Canon Foreigner: She is newly created for the live-action sequel series.
- Distaff Counterpart: An entirely assumed feminine version of Jérémie.
- Education Mama: Her father is quite insistent that she get a good education, to the point of wanting to move her to another school simply because Kadic is suffering from a computer glitch their staff cannot fix (XANA was attacking the system).
- Freudian Excuse: Her father is very demanding and is essentially her without her redeeming qualities. No wonder she turned out to be so condescending.
- He Knows Too Much: Inverted; because they're heroes, the fact that Laura knows about Lyoko and can't have her mind wiped means they have to keep her close by.
- Idiot Ball: Becomes this in episode 22, as despite being superior to Aelita in terms of smarts, she is unable to program the Megapod.
- Insufferable Genius: Not to the point of arrogance, but she does tend to be a bit condescending; "It's simple" or "a child could do it" are her common answers to a problem Jérémie and Aelita fail to solve.
- Jerkass: She is insufferable, quite smug even when she's supposed to be helping and has no problem taking her feud with Aelita to outright mockery over her father being gone, implying Hopper favoured his work over her. In "Mutiny", not only does she show no remorse when her actions almost led William to be turned into XANA's slave again, but she actually keeps blaming the Lyoko-Warriors for letting their emotions get the best of them.
- Laser-Guided Amnesia: After an ill-conceived attempt to destroy XANA in "Mutiny" which nearly got William turned back into XANA's servant, Jeremie somehow erases all her memories of the factory with the Return to the Past (evidently he fixed whatever method she used to protect herself).
- Manipulative Bastard:
- In "Chaos in Kadic", she lures her father to the factory in order to force the heroes to launch a Return to the Past.
- In "Mutiny", she convinces William to help her in her scheme to act behind the Lyoko Warriors' back by playing on his feelings of rejection from Yumi.
- Never My Fault: After her attempt to deal with XANA herself goes horribly wrong and nearly gets William captured, rather than admit she was wrong she blames the others for not having her vision. It's likely this more than anything that convinces the others that she needs to be kicked out.
- New Transfer Student: She transfers to Kadic early in the series.
- The Rival: She and Aelita hate each other, in part because they fill similar roles on the team, and the negative air between the two just gets worse as the season goes on. Because of an early return to the past Laura is unaware of why Aelita was initially antagonistic towards her, but she soon turns very nasty in response.
- Sixth Ranger: As of "Virus", much to the Lyoko Warriors' dismay.
- Sixth Ranger Traitor: In "Mutiny", when she acts behind the team's back.
- The Spock: Deconstructed in "Mutiny".Laura: They are blinded by their emotions, William. We have to take the decision for them.
- Stalker with a Crush: It's implied that the reason she shadowed the gang everywhere in her first appearance was because she had a thing for Jeremie, right down to making Freudian Slips when talking to him. This gets lampshaded by Odd, who also implies this is the reason initially Aelita disliked her. It's dropped in later appearances, which focus more on her interest in the technology.
- The Team Normal: Similar to Jérémie, being a non-combatant/secondary Mission Control. She almost gets virtualized in "Vendredi 13" as a last resort, but Aelita thought up a solution that negated the need. Laura was somewhat annoyed at being denied the chance.
- Teen Genius: At first, it is implied she is smarter than Jérémie. Later episodes shows Jérémie is still in first place, however (episode 12 for example).
- Token Evil Teammate: Downplayed and later Deconstructed. She's a Jerkass, she's cunning and often works behind the heroes' back. That said, she still helps them in their fight against XANA. However, she's more and more alienated from the team due to that. On top of that, her scheme in Mutiny leads to her being kicked out of the group.
- Unwitting Instigator of Doom: Once she's had her memories erased, she finds the card for Tyron's company she kept when Mr. Graven stopped by. Upon contacting him, Tyron showed her pictures of the gang's Lyoko avatars, allowing him to identify them and figure out that they all go to Kadic.
- Well-Intentioned Extremist: In "Mutiny", she decides to act behind the team's back, manipulating William into helping her, in order to destroy XANA. Her concern was founded, but she decided to put priority on XANA's destruction over the others' promise to find Aelita's mother.
- Xanatos Speed Chess: In "Virus", she hacks the Return to the Past just after overhearing the heroes mentioning she's going to be kicked out. In "Chaos in Kadic", when her father is insistant about her leaving Kadic, she lures him to the factory in order to force the heroes to launch the Return to the Past, thus erasing his memories and the damage caused by XANA's attacks.
The main antagonist of Code Lyoko. He has been resurrected and is using source codes implanted in the Lyoko Warriors to regain his strength. What he plans to do once he has regained his power is unknown.
- Back from the Dead: Though all his Replikas were destroyed in the previous series, he survived by hiding inside a quantum supercomputer of similar design to the one hosting Lyoko.
- Big Bad Duumvirate: With Professor Tyron until it's revealed they are a Big-Bad Ensemble..
- Soul Jar: He is using the Lyoko Warriors as this.
A man introduced at the end of "Compte à Rebours", assumed by the Lyoko Warriors to be responsible for the creation of the Cortex. He used to work with Franz Hopper after the Carthage Project, but betrayed him at some point by using part of his research without his permission. In the present day, he is still involved with the Cortex, and is responsible for dispatching the Ninjas to deal with the incursions of the Lyoko Warriors.
- Archnemesis Dad: We eventually find out that he has married Athena Hopper, thus making him Aelita's step-father.
- Big Bad Duumvirate: With XANA until they are revealed to be a Big-Bad Ensemble.
- Canon Foreigner: He is newly created for the live-action sequel series.
- Evil Counterpart: To Franz Hopper, as he's using Hopper's research for (as-yet undefined) nefarious purposes. He's also one to Jérémie, being the smart guy behind the operation and sends in his own team of humans into the virtual world.
- Failed a Spot Check: Despite XANA openly sending out his monsters into the Cortex to fight both the Lyoko Warriors and the Ninjas, Tyron seems to think nothing of it.
- Genre Blind: He doesn't think XANA is real, despite evidence to the contrary. Even when his Ninjas fight through an army of Tarantulas and Krabs, Tyron seems insistent on denying that his supercomputer has been infected with a world-destroying multi-agent system.
- Goggles Do Nothing: Possibly. He sports a pair of them on his head, yet all we've ever seen him do is look at computer screens. It's unknown if they actually have a purpose.
- Mad Scientist: Possibly. He certainly looks the part.
- Mysterious Past: His full history with Hopper and potentially Project Carthage is unknown. We also don't know how he got Anthea into his employ.
- Predecessor Villain: Seems to be this, as he was apparently there when Hopper was working on Lyoko.
- Smug Snake: He's quite convinced he's got everything under control.
- Spanner in the Works: The timing of when he first got the Cortex online is unknown, but it's thanks to Tyron that XANA was able to survive his defeat in the original series. Especially because he's completely ignorant of XANA's existence, making the timing convenient for XANA and unfortunate for the Lyoko Warriors.
- They Call Me Mister Tibbs: "That's Professor Tyron."
- Unwitting Pawn: His ignorance of XANA's existence allows XANA to work from his supercomputer with impunity, barring Tyron's occasional act that inconveniences him.
- Wrong Genre Savvy: Tyron thinks Aelita is the prodigal daughter returning to take back everything he stole from her father, and get her mother out of his grasp. But while she does care about finding her mother, the group have no problem with his system at all except for the fact that XANA is using it to attack the world. He refuses to believe that the plot isn't about him, and it's especially obvious when he and Aelita meet face to face that he has little idea of what's really going on.
A new enemy that guards the core of the Cortex. Unlike XANA's monsters, they're humanoid.
- Cyclops: Their head sports a lone, big luminous eye. Because they're slightly transparent, it can also be seen from every angle.
- Dual Wielding: Two black-bladed swords.
- Elite Mooks: They are far superior to XANA's monsters in combat ability, being an even match for the heroes one-on-one, because they aren't just machines.
- Evil Counterpart: To the heroes, being a small group of highly-skilled opponents that also happen to be real people.
- Hand Blast: A pair of them fire beams from their hands that allow them to telekinetically hold whatever they hit, and potentially keep the targets stuck on the Cortex rather than devirtualize.
- Parrying Bullets: They are able to deflect Odd's rapid-fire arrows with ease, and knock Yumi's thrown fans back at her.
- Sickly Green Glow
- Super Speed: One is shown to keep pace with the Megapod by activating some kind of aura, but it wears off after a short period.
- Wall Master: They can merge with the platforms in the Cortex.
- Weapon Twirling: Some of them indulges in this.Ulrich: Hey, you'd make a good wind fan...
Jim reprises his role as gym teacher and disciplinarian.
- Large HamJim: ÇA S'APPELLE LE CYBER-SPORT!!
- Plucky Comic Relief: Some things just don't change.
- Reasonable Authority Figure: A notable evolution compared to his original series counterpart, this Jim actually has more reasonable and understanding reactions toward the students. For example, he's not really upset when Odd, who's talking gibberish as a result of a Spectre attack, makes off with his cell phone, assuming the poor kid simply buckled under the stress, and even decides to talk about it to Delmas so they can do something to help students be more healthy.
- Took a Level in Kindness: While he still has a tendency to give detention quickly, this version of Jim acts less aggressive than his original series counterpart and is less quick to get angry. "Compte à rebours" even has him worrying about the students' health and go to talk about it with Mr. Delmas.
- Adaptational Attractiveness: Delmas in the Original series wasn't exactly ugly, but he was a fairly old man with grey hair and glasses. Evolution Delmas is significantly younger and more attractive.
- Adaptational Attractiveness: She must have had some serious work done during the timeskip, or this is an entirely new character with the exact same name.
- Adaptation Dye-Job: Mrs. Hertz's grey, poofy hair is now straight and brown. Lampshaded by Ulrich, of all people.
Elisabeth "Sissi" Delmas
- Adaptational Dye Job: Her hair goes from black to blonde.
- Call-Back: In episode 21 "False Pretenses", Sissi once again poses as a Lyoko-warrior at the heroes' request. She successfully fools a spectre, however, unlike "Missing Link" from the original series where she was found out.
- Demoted to Extra: Only has a speaking role in episodes 9 and 21.
- Lovable Alpha Bitch: Episode 21 details this, showing despite being often inconsiderate, she really is friends with the gang (a development made in the previous series' finale) and likes to hang out with Yumi and Aelita to do girly things.
- O.O.C. Is Serious Business: Odd knows something is wrong with Sissi when she actually apologizes for bumping into him since, despite being on friendly terms now, they've kept their old dynamic up. Unfortunately, this causes him to wrongly assume she is a Spectre.
- Adaptation Dye-Job: Blonde here, pink-haired like Aelita in the previous series.
- Missing Mom: Just like in the previous series... until episode 18, that is. She's alive and working with Professor Tyron.
Franz Hopper is the creator of the supercomputer, and Aelita's father. There is a picture of him stored in the Cortex.
- Broken Pedestal: To Aelita, when she finds out the Cortex might have been created by him. She ends up deciding it cannot be so, since while the supercomputers are similar, the Cortex is nothing like Lyoko, and is later proven right.