Slix Vigma

From Ben10versepedia

Slix Vigma is the coordinator for intergalactic-viewed gladiator games run on a massive stadium ship known as the Mega Cruiser. Slix himself is a robot that acts as the control center for the entire ship. To recruit gladiators, Slix kidnaps them from their native worlds and uses Shock Collars to keep them obedient. He then pits them against each other or various robots in fights to the death. Slix was destroyed by Kevin Levin. Slix Vigma appears in the episode "Grudge Match".