Barry is a Baabian janitor who cleans up messes in the BASA. He accidently hits himself with a broom making it impossible to do his cleaning job right. In one scene of the film, his eyes were crossed after drinking the Dark Planet Cola he is allergic to.
The character used for Barry is a modified version of the nameless Milkman alien from Planet 51.
For a full gallery of Berry, see Barry (Escape from Planet Earth)/Gallery.