Becoming a monster makes him hate Ben more than ever, as he blames him for his new form, and he swears revenge, becoming Ben's secondary archenemy and foil: 'Kevin 11'. He uses this to frame Ben for robberies using the alien forms, but the constant changes makes his DNA unstable and he eventually becomes a combination of all ten of the alien forms. He originally wanted to team up with Ben to become unstoppable, but after Ben refuses the offer, he absorbs power from the Omnitrix instead. He uses the ability to commit crimes to benefit himself, never caring if it hurts anyone. Kevin Ethan Levin – An 11-year-old delinquent sociopath with a mutant power that allows him to absorb energy. Vilgax was the main antagonist of the first season, and was a recurring antagonist in the following seasons. Vilgax was injured and remained in a regeneration chamber in the first season, but when completely healed, he was cybernetically enhanced, giving him colossal size, strength and durability that made him a match for every alien Ben could access at that time, therefore becoming the boy's archenemy. Vilgax – A Chimera Sui Generis warlord regarded as one of the most feared aliens in the galaxy, who stops at nothing to take the Omnitrix, which he wishes to use in order to create a transforming super army.
