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"I think I kept a little souvenir from my time with X.A.N.A."

–William refusing to pilot the Overboard in Cortex.

Super Smoke is William's special ability while on Lyoko after being possessed by X.A.N.A., though after such a long possession, he retained the ability after being liberated.

While it is mainly used for fast transportation, it also can be used for many other useful purposes. William can make his body collapse into black smoke and slither across the ground, at high speed. He seems to be completely invulnerable while in this form, even turning into smoke to avoid being injured. He can also move along other surfaces, and through the air, but only at low altitudes.

With Super Smoke, he can turn his sword into smoke to return it to his hand. He can even throw a ball of smoke at a Lyoko Warrior engulfing them in smoke, knocking them unconscious, and causing them to float above the ground, being guided by William's hand. Almost every time in Season 4, he uses it on Aelita in an attempt to throw her to the Digital Sea, although he only succeeded once in Distant Memory. He can also use it to create reins for the Black Manta.

William still possesses this ability in Code Lyoko Evolution as transportation on both Lyoko and the Cortex. He refers to it as a souvenir given to him by X.A.N.A.

Times When Used

Season Four

Season Five

Video Games


  • When using Super Smoke, William can even outrace Aelita's flying ability, and even go much faster than Ulrich's Super Sprint.
  • In Evolution, he no longer yells it out like he used to when he was possessed by X.A.N.A.. Also, it now sparkles pale green.
  • As it turns William into a non-physical form, he is unable to get hurt by Odd's laser arrows, as shown in Bragging Rights.


Season 4

Quest for Infinity

Season 5 (Code Lyoko: Evolution)