Jack the Jerk is an actor on Kid Gets Acquainted with Universe. He is arrogant, mean, selfish, greedy and is easily angered and continually asks Eric why he's needed if Jack is there. (This is probably a reference to the fact that Jack is the long lost brother on Boy Meets World) He is also upset that he doesn't get his banana at precisely 2:15. As a result, he fired the banana boy and hires the mango boy instead.