He is a reddish-pink starfish who has bushy eyebrows and wears a gray tank top and blue shorts. He is a darker shade of pink than most other starfish in the series.
Role in episode
SpongeBob pretends to be dumb for Patrick's fake parents. He is not quite smart himself, though.
Even though SpongeBob reveals the truth about Patrick, Marty and Janet still don't believe Patrick is dumb and start laughing at SpongeBob, who runs out of the house in a fury. When Janet and Marty reveal their real names, Patrick gasps and demands to know who they are.
Before Patrick can do anything, Squidward arrives with another starfish couple, who reveal themselves to be Patrick's real parents. Janet and Marty realize they don't have a son and leave.
Even though he makes fun of SpongeBob's stupidity, in the end, it's revealed that he doesn't even know that Patrick is not his son. Since this is his and Janet's only appearance, it is never revealed if they even have any kids at all, or if they're even related to Patrick.