Greego

"I'm Greego. I'm the kid on the left with the tie and the flat-top."

- Greego

Greego is a blue-skinned doppelgänger of George Beard. Along with Dohlar, he has the ability to turn into a shark when angered. He only appears in "The Disturbing Dilemma of the Dysfunctional Doppelgangers."

Trivia

 * Greego's name is an anagram and a sign-scrambled version of George's.
 * He could possibly be a reference to Evil George Beard.