Ben Tennyson (BTSU)

Ben Tennyson is the main character and the main antagonist in Ben 10: Shattered Universe.

About
Ben Tennyson aka "Ben 10" found the Omnitrix, a device that allows him to change his appearances into different aliens, during a summer vacation with his grandfather, Max Tennyson. After an old friend of Max, Phil, returned, he changed Ben from a crime-fighting superhero to a powerful supervillain. Unknown about what happened to his grandfather, he and his cousin, Gwen Tennyson, decided to be villanous baddies instead of righteous heroes. Now, he is the leader of an evil organization taking over the whole galaxy. Without the threat of the long disassembled Intergalactic Space Force (ISF), he isn't afraid of anything that gets in his way. With the help of his new partner, Rook Blonko, it is possible to classify him as an "unstoppable" villain.