William Dunbar
William then and now
First appearance New Order
Known as N/A
Loyalty Lyoko Warriors
Physical information
Species Human
Hair color Black (Dark bluish-black in Lyoko)
Eye color Brown (Grey on Lyoko in Evolution)
Skin color White
Gender Male
Height 1.7m (5'7)
Weight 57kg (125.7lbs)
Virtual information
Avatar Doppelsöldner
Weapon Zweihänder
Powers Super smoke
Energy waves (fired from Zweihänder)
Levitation (with the Zweihänder)
Vehicle Black Manta (under possession), Rorkal (under possession)
Transportation Super smoke
Voiced by David Gasman
Portrayed by Live Action: Diego Mestanza
French Voice: Diego Mestanza
Don't give up with that girl, Odd. Just look at me, I never lost hope with Yumi!

–William in How to Fool X.A.N.A.

William Dunbar joined Code Lyoko in the second season as one of Yumi's classmates. In Final Round, he became the sixth member of Team Lyoko, until his first trip into Lyoko, when X.A.N.A. possessed him and used him as his general until episode Down to Earth where he was freed and returned as an ally. He returns in Code Lyoko Evolution, and permanently joins the team at the end of the episode Rivalry.


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William was kind of a loner at first, having been kicked out of his previous school for posting love letters everywhere, but Yumi soon takes to him as a friend. To nobody's surprise, William wants to be more than just friends, causing conflict between him and Ulrich when both of them vie for Yumi's affections. His appearances in the show become more frequent during the third season, when Jeremie suggests to the team that William join their group, much to the disagreement of the rest of the warriors. As fighting on Lyoko becomes harder and harder and X.A.N.A. starts to force Aelita to delete several of Lyoko's sectors, the group decides to let William join.

However, X.A.N.A. takes advantage of William's ineptitude and uses the Scyphozoa to take control of his mind and body, effectively trapping him in Lyoko. Jeremie creates a stable polymorphic specter with William's basic memories, and a basic personality in order to prevent suspicion amongst the school. Over time, this "clone" becomes much more popular than William was, but due to his 'dumb' personality, he unknowingly causes trouble for our warriors. His personality also became a bit of a gag in the show, best seen in the episode Wreck Room. In episode Down to Earth, William is finally freed from X.A.N.A.'s control, and returns to Earth. However, his behavior pre-X.A.N.A. causes tension between him and the rest of the warriors, who are reluctant to associate with him further, as seen in Fight to the Finish.

In tandem with this, in Code Lyoko: Quest for Infinity, he was a secondary antagonist. However, he was still rescued from X.A.N.A., complete with recycled footage from "Down to Earth."

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William's role in the new series, Code Lyoko Evolution, is to seek redemption, which he later succeeds. In Cortex, after Odd got himself locked up in utility room, William, instead of helping him out, went to Lyoko and takes Odd's place. For this, Odd was really mad at him, even having a thought of devirtualizing him. After rejoining the team, they stop fighting and became friendly to each other. In Rivalry, William and Ulrich puts down their disagreements after William saves Ulrich from falling into Digital Sea. William becomes more serious about the missions in order to be worthy for the others to trust.

When the Lyoko Warriors discover the existence of Source Codes, William appears to be the only one to not having them. This makes him a more distanced member, as he is the only Lyoko Warrior who cannot deactivate towers. That doesn't stop him from becoming vital support to the group when X.A.N.A. attacks or while exploring the Cortex, always fighting with passion and resolving many situations.

Being one of the codeless only deprives him of the ability to deactivate towers on Lyoko. On Earth, William is not targeted by spectres. This makes him the only one who can be exposed to them without risk, or almost none.

In Mutiny, William return in X.A.N.A.'s possession after he falls victim to the Scyphozoa. The monster failing to seize him completely, it remains attached to William. Later, he is freed thanks to his friends help.

William is not given a major role in the group's major decisions. He supports his friends in the fight against X.A.N.A. and its spectres, he supports them in the discovery of the Cortex and Tyron's Ninjas. Finally, he is on their side for all major decisions regarding what to do next, especially after the discovery of Aelita's mother's survival.

After the team infect the Cortex with their virus, William stands beside Aelita and the rest of the group when they go down to shut the Supercomputer back down again, a clear sign that he earned his place in the group...once and for all.

Personality and CharacterEdit

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I'm not the kind of guy who like to steal the show!

–William in Final Round

William has a strong personality. Being a fighter, he doesn't hesitate to let things get messy with Ulrich when he's provoked by him in A Bad Turn. He says that love can drive him crazy, and it's true, because he jumps at the chance to go out at night, against the rules, to visit Yumi.

He's a hopeless optimist, he continues to follow Yumi even when she seems to be fed up with him, but he is also extremely curious, unfortunately for the group.

Sometimes he is childish, the best example is in Final Round. In these cases, his immature side is clearly seen, but this aspect of William is also obviously present in his provoking side.

But his strong point, which catches the group's attention, is that he is really brave. In Lyoko Minus One and The Secret, he fights against his entire possessed class and a construction worker who is also under X.A.N.A.'s possession. He deactivates a bomb with seven seconds to spare.
William also has great mental strength. In the whole series, he is the only character who has fought X.A.N.A.'s influence while being under his control in 'The Lake. So, prowess is a word that can be attributed to William's character, but it's not the only one; he's also very frank and doesn't mince his words. He's also serious, but some of his actions are ridiculous, like for example his puerile reaction during his first virtualisation, or his repeated flirting attempts.

There is a universal trait among all the character's good and bad qualities: he is persevering. In the end, however, this is what makes him touching: when he became himself again, the heroes rejected him tactlessly, and yet he still wanted to lend a hand if they needed it. That's why, although William can be blamed for many things, there is still good parts inside him.


Yumi IshiyamaEdit

Unlike Ulrich, William doesn't hide his feelings toward Yumi. Since William arrive at Kadic, he is often seen together with Yumi, chatting with her,and sometimes acting romantic toward her, as seen in Saint Valentine's Day. If that wasn't bad enough for Ulrich, Yumi seems doesn't mind with it. In A Bad Turn, William directly declared his feelings for Yumi, even trying to steal a kiss, but Yumi rejected him. She remain silent when William asking her rejections is because of Ulrich. Nonetheless, William still remained the same throughout, not hiding his feelings for Yumi from the rest of the world .

During Season 3, William became a pot of glue...which started to annoys Yumi. She clearly tells him this in The Secret and denounces his “two-bit Casanova act”, upsetting William. She doesn't appreciate him as much as she used to, and she was the one who refused to let him enter the group following a group vote. William was convinced that Ulrich was the one who had rejected him. However, she changes her mind in Double Trouble and thanks to her, William joins the group.

X.A.N.A.'s possession at William gave the complex love triangle between himself, Yumi and Ulrich some fresh air. This annoying event moves the tension far away from matters of the heart. Nevertheless, the veracity of William's feelings is pressed in The Lake. Yumi calls the real William while he is preparing to devirtualise her. The real William resurfaces and tries to stop X.A.N.A. from attacking Yumi. In vain, unfortunately.

After William is freed and X.A.N.A. was defeated, Yumi tells him the truth: he's not the one she loves, and he has to give up hope. However, William will not giving up that easily.

In Evolution, William is clearly still in love with Yumi. He shows to be slightly seductive towards her in X.A.N.A. 2.0 by complimenting her hair, and tries to give her love poems in Mutiny. He even declares in How to Fool X.A.N.A. that he never losing hope with Yumi.

However, William seems to have backed down a little, since he never expressed his feelings directly to Yumi as he had done in the past. He even invites Ulrich to support her in Suspicions.

Ulrich SternEdit

Since his first arrival at Kadic, Ulrich was the only member in the group who is having problem with William, because both of them are competing for Yumi's attention. At first, William doesn't take it too far, but for Ulrich things have already turned very hostile. He's convinced that William is doing anything he can to seduce Yumi, although at this point William's intentions were just to get to know her better. In Marabounta, William quickly found out that Ulrich also have a feeling for Yumi. Instead of trying to oust him, William even tries to give Ulrich advice which, given his huge amount of pride, Ulrich doesn't follow at all. So William decides to take his chance. If Ulrich didn't want to listen to him, tough. William gets closer and closer to Yumi. That's when he realises that Ulrich really is the only obstacle on his path to Yumi's heart. Since then, William rivalry with Ulrich is getting more obvious. William has tried to humiliates him in front of Yumi, insulting and provocating him, and even got into a fist-fight with him.
Despite their rivalry, William has shown that he is doesn't mind to teamed up with Ulrich when the situation calling for it. As seen in Lyoko Minus One, when he joins Ulrich to help Yumi from a X.A.N.A.'s attack, and when he helped Ulrich to stop the bomb in The Secret.

During Evolution, William and Ulrich's relationship is still in a bad terms, thanks to both of them are still competing for Yumi's heart, and the period when William was possessed by X.A.N.A.. Their rivalry reaches its peak in Rivalry, when Ulrich refuses to teamed up with William only to prove to everyone that they doesn't need William. In the end, William and Ulrich decide to become friends after William saving Ulrich from falling to Digital Sea. Since then, they stays in a good relationship, despite William still hoping for Yumi…

Odd Della RobbiaEdit

William has a pretty fine relationship with Odd. Odd likes his rebellious side, but deplores his lack of humour. Before William join the group, they are rarely seen having interaction with each other. The most notable one is in Final Mix, when Odd offer him a help to fix the mixing board that William wrecked up, and in A Bad Turn, when he teamed up with Odd to defeat a materialized Krab.

In Cortex, William was very upset at Odd when he refuses to let William rejoin the group, also because Odd remind William about how he get captured by Scyphozoa like an amateur. Later, William get his revenge at Odd by taking Odd's place in a mission and ignoring Odd, who was locked in locker room (he even asking Odd about how its felt to be trapped like an amateur). Due to this, Odd was very mad at him. After William rejoin the group, they started to have a good relationship again. Often, William gets annoyed by Odd's crazy acts in Lyoko, despite sometimes he find it helpful.

Jeremie BelpoisEdit

During Season 2, William almost never seen talking with Jeremie. The only time they're interacting in Season 2 was only in Attack of the Zombies, in which William trying to prevent Jeremie and his friends from leaving the cafeteria.

Even after William join the team in Season 3 and rejoined in Evolution, they are still rarely seen together. Despite this, they are still good friends.

Aelita SchaefferEdit

Just like with Jeremie, William rarely seen talking with Aelita before he join the group. The only time they talking in Season 2 was in Final Mix, when Aelita fixing the mixing board and William offer her to being a DJ in the school party.

After he rejoin the team in Evolution, they become good friends. Often, William save the day for Aelita in missions, as seen when he saves Aelita in Cortex, and when he sacrificing himself to save her in Suspicions.

Laura GauthierEdit

Laura appear to be the member that William being the least open to. He shows to be incapable of stopping her from going to the factory in Virus. He has never shown to be outwardly hostile about her presence in the group and he accompanies her on her last stand in Mutiny. During this period, he even draws Laura's attention to the consequences her behaviour would have on her being in the group. In the end, he remains silent when the group decides to ban her. This tacit sympathy is due to the fact that Laura is in a more or less similar situation to William's.

Fighting on LyokoEdit

William wields a big sword called Zweihander. Its name literally means "Two-Hander" in German. Traditionally, Zweihanders are wielded with two hands due to their great weight. Evidence of the sword's weight can be found in the episode Final Round, when William attempted to hold it with one hand, and then dropped it. His sword also fires energy blasts when he swings it.


  • Super Smoke: An ability much like Ulrich's Super-sprint, but instead of simply running at speed, William becomes smoke to pass away from people, monsters or things. The black smoke can suspend other people in a paralyzed state. He still has this power in Evolution. Since he has no vehicle, this is his only transportation.
  • Second View: The ability to see much farther away in the same sector. This is was only available while under control of X.A.N.A.
  • Levitation: An ability that allows him to levitate by holding his Zweihander by both hands and pointing downward. Only available under control of X.A.N.A.
  • Tower Control: Ability to activate a Tower for X.A.N.A., from the inside or outside. This mimics Aelita's power and it is possible X.A.N.A allowed him to use a version of the Annex Program. Only available under control of X.A.N.A.


  • Black Manta - A unique Manta for William to ride on as a vehicle.
  • Rorkal - A virtual ship like a Nav Skid created for William, but he was given a black, independent one by X.A.N.A, who made it by using the data he has stolen from the Skidbladnir through the Scyphozoa in The Lake.
  • Nav Skid - One of Skidbladnir's minimum-sized fighting ships. In original Skid, there was one more which was probably meant for William. After he rejoined the team, he got one for himself in the new Skid.


  • In the French version of Code Lyoko, he is played by Mathieu Moreau.
  • While possessed by X.A.N.A. in Lyoko, his sword's look changes, similar to the black and white parts of a tower in Lyoko.
  • William's sword is a specific type of Zweihander called "schweren Schlag" (literally "heavy blow" in German). It is a type of Zweihand that has a heavier bass blade, spanning the entire hilt. Normal Zweihanders weight around 15 kg, while the schweren Schlag is between 30 kg and 45 kg. This may be why William cannot wield his sword in one hand, as most fighting styles can utilize this.
  • On Lyoko, William's form is a Doppelsöldner. Doppelsöldners were specific types of mercenaries who volunteer to fight which means to take on extra risks. In exchange, they earned double payment. Interestingly, they also used the Zweihänders.
  • He was the first character to receive a new, more modern/futuristic outfit in Jeremie's upgrade, although William's was given to him by X.A.N.A.
  • He was the only character to obtain a X.A.N.A. suit (unless one counts the polymorphic clone from Revelation who shape shifted into an evil Ulrich).
  • X.A.N.A. likely chose to possess William because it saw the most potential in him as a weapon out of all the other Lyoko Warriors due to his recklessness.
  • In the episode Vertigo, it is revealed that William is afraid of spiders. Ironically, he rides on Tarantulas that resemble spiders.
  • There was an unused Nav Skid on the Skidbladnir when it was created. It was, most likely, intended to be used by William in case he was freed from X.A.N.A.'s control. Once freed, he is seen in his own Nav Skid in The Warrior Awakens.
  • He was the last person in the real world to be possessed by X.A.N.A., before Code Lyoko Evolution, though he still remains the last one as there haven't been any new human-possessions yet.
  • Oddly, in a A Lack of Goodwill, he wore the new clothes his clone had. But when in Down to Earth, when he is freed from X.A.N.A, he was wearing his old clothes.
  • In the Final Round, he began to glow purple under X.A.N.A's control when he ran extremely fast or levitated. Later in the series, he just uses his Supersmoke ability to accelerate.
  • Odd's arrows cannot hurt William while he using Supersmoke, as seen in Bragging Rights.
  • In Double Trouble, William recalls the events from The Secret in a dream - despite those events never happening due to a return to the past. The reason for this has not yet been explored in the series.
    • A logical reason could be that the Return to the Past can cause Déjà vu to those who haven't been scanned by the Supercomputer.
  • In A Bad Turn, he reveals that he participates in the micro-kart club, and extends an invitation to Ulrich to join, which he accepts.
  • It is possible that William dislikes chemistry class. This is said in Ultimatum as he tells Odd, "Lucky you, we got chemistry".
  • In season 3, it was strongly indicated that William constantly pulls pranks on Jim.
  • So far, he is the only Lyoko Warrior with 2 battle themes.
  • When William was repossessed by X.A.N.A in Fight to the Finish, it shows that he didn't have resistance to X.A.N.A like others did when X.A.N.A tried to possess them in A Great Day.
    • X.A.N.A. easily repossessing him would make sense considering how he only went to Lyoko once and was possessed for the entire 4th Season.
  • William was the only Lyoko Warrior in Code Lyoko Evolution who didn't have X.A.N.A.'s Source Codes, until one of the others had all of their codes stolen.
  • Other than Aelita shown landing on her feet when being virtualized in a flashback in Aelita, William was the only Lyoko Warrior to land on his feet when first being virtualized.
  • In Evolution, William no longer yells out SuperSmoke when he uses it.
  • He is the only one to have immediately devirtualized the real Ulrich when he used Triplicate.
  • He and Laura are the only Lyoko Warriors that didn't make a appearance in Season 1.
  • In the Evolution episode Mutiny, it is revealed he is afraid of being repossessed by X.A.N.A. This can be seen when he frantically asks Laura to devirtualize him (and almost did it himself) as soon as he sees the Scyphozoa.


Expand/Collapse Gallery

Earth: Season 2Edit

Earth Seasons 2-3: UnknownEdit

Earth: Season 3Edit

Earth: Season 4Edit

Earth: EvolutionEdit

Lyoko (Final Round - Season 3)Edit

Virtual (Season 4)Edit

Virtual (Evolution)Edit


See AlsoEdit

Team Lyoko
Jeremie Belpois | Aelita Schaeffer | Odd Della Robbia | Yumi Ishiyama | Ulrich Stern | William Dunbar
Secondary Characters
Sissi | Jim Morales | Suzanne Hertz | Anthea Schaeffer | Mr. Delmas | Laura Gauthier | Franz Hopper
Absent Characters
Kiwi | Herve Pichon | Nicholas Poliakoff | Amelia "Milly" Solovieff | Tamiya Diop
X.A.N.A. | Monsters | Professor Tyron | Ninjas

ca:William Dunbar es:William Dunbar fi:William Dunbar fr:William Dunbar gl:William Dunbar it:William Dunbar pl:William Dunbar pt:William Dunbar ru:Уильям Данбар sr:Вилијам Данбар