Chaos Agent (Hero)

Chaos Agent is a  in Fortnite: Save the World. He can be unlocked by completing the "The Lab pt. 2" quest in Dungeons - The Lab, which is to complete two missions in The Lab dungeon.

Story
He's a villainous scientist working for the Villainous Council. In the The Lab dungeon, he was sent by the Villainous Council to help the Commander (The Player) stop The Good Doctor's plan: Destroying the Storm, but only if the humanity transforms into whatever Hyde is.

Trivia

 * From his comically accented voiceover during the The Lab dungeon, it can be presumed he Russian or Slavic in origin.