Coverton

Coverton is a psychokinetic alien who is the main antagonist of Monsters vs. Aliens (TV Series), he uses a floating chair for transportation. He claims to have come to make peace after what happened with Gallaxhar but secretly works for an alien referred to as Coverlord. He uses the plans of making peace with Earth as a cover-up for his plans to take over Earth. The Monsters are suspicious of him (except B.O.B., who is too dim to be suspicious) but are unable to do much about it due to Coverton being well liked by President Hathaway.