He is a light purple fish with a dark blue dorsal on his back. His fins also have blue lines. He wears a gray suit with a purple bow-tie and white undershirt, light black pants, and brown shoes. He has a mustache and two strands of black hair.
Role in episode
He appears at the beginning critiquing Squidward's art. Just when it seems like he is going to compliment it, he ends up insulting it and assaulting Squidward as he is kicked out.
In end credits of "Insecurity Guards," Tom Kenny, who voiced the art critic, is uncredited.