BatBob CubeShirt

is a parody of SpongeBob SquarePants. It was mentioned by Ari in Lights, Camera, Elinor!, then was first eyed in the same episode.
Ari says that he played the main character in because he has been to Hollywood at the age of 5 just to make 3000 episodes of the series. Playing the role of BatBob reminded him of being a bat.