Gilashark

Gilasharks are circus performers from the Marvel Comics portion of the Generation 1 continuity family.

Well, who's gonna get this gilashark off me?

Gilasharks are an alien species sometimes found in space-travelling circuses such as the Cosmic Carnival. They are typically afflicted with acrophobia. The Cosmic Carnival

From Teletraan I: The Transformers Wiki, a Wikia wiki.