Kevin Levin

For a time, Kevin Levin was a villain in the cartoon series Ben 10. In the premiere of Ben 10: Alien Force, he became a hero and joined his former rival / new friend, Ben Tennyson to fight against extraterrestrial activities.

Then on Ben 10: Ultimate Alien episode, The Forge of Creation, he absorbs the Ultimatrix and becomes insane once again and a lot more dangerous than before.&nbsp