Cousin BlackJack SquarePants

BlackJack SquarePants is SpongeBob's cousin. He beat up SpongeBob when they were young. Later in life, he went to jail for littering. In jail he somehow shrunk to the size of SpongeBob's big toe. He was released from jail in the episode "BlackJack." After this he is united with his family, at a release party. When they were younger, BlackJack was much bigger, compared to SpongeBob. In the present, he is no bigger than SpongeBob's foot. He is voiced by John DiMaggio