saved him from many situations, especially when the Omnitrix cannot activate or doesn't provide him with the alien he originally wanted. Gwendolyn "Gwen" Tennyson: Gwen is Ben's cousin and is depicted as a kind and intelligent girl, very skilled with computers and possessing a level of martial arts skills. She is also very independent but is very organized, sometimes to the point of compulsive, but can be a light-hearted schemer and immature as Ben. Overall, her most notable skill is her innate, if latent, ability at magic, first shown in "Tough Luck" when She was able to use Hex's staff, which can only be used by a master magician, to defeat Charmcaster. She later obtains Charmcaster's spellbook in "Change of Face" and begins improving her magic. Grandpa Maxwell "Max" Tennyson: Ben and Gwen's grandfather, who takes the two on a cross-country road trip for summer vacation. In "Truth" Max reveals he was a part of the Plumber's an intergalactic police force, and handled many extraterrestrial encounters in the past. His history as a plumber has given him knowledge, training, and equipment for fighting aliens as well as an unconventional taste in food, much to the dismay of his grandchildren. In "The Visitor," an old alien acquaintance of Max's called Xylene reveals that Max was the intended recipient of the Omnitrix. Main villains 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. In the past, Vilgax was an enemy of Max. 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 was the main antagonist of the first season, and was a recurring antagonist in the following seasons. Sixsix – A Sotoraggian bounty hunter Kraab – A Piscciss Premann bounty hunter Kevin Ethan Levin – An 11-year-old delinquent sociopath with a mutant power that allows him to absorb energy. He uses the ability to commit crimes to benefit himself, never caring if it hurts anyone. He originally wanted to team up with Ben to become unstoppable, but after Ben refuses the offer, he