The Moviegoer is an obnoxious little plot device used to skip massive portions of major plot. When something important is about to happen, the scene will cut to him, and he'll do something idiotic and inconsequential while the really important things are happening elsewhere. By the time the scene switches back, everything's already happened.
He is very jealous of other moviegoers, and cannot stand their existence. He will throw popcorn at them, killing them INSTANTLY (BR2:4:6).
He was killed by Gunlimb (BR2:4:9).