Flargle is one of the Ziraxia characters.
He is a goofy purple alien of an unknown species, known only as a Flargle. He is one of the lesser crew members of the Ziraxian ship and doesn't seem to even serve a true purpose. When introducing him to the viewers, the Ziraxia announcer is hesitant, and says, "It is inhabited by other alien species as well, noticeably the Greys and... well... Flargle."