Mark Taylor in the youngest son of Tim and Jill's three boys. He was once often the butt of Brad and Randy's jokes and pranks, such as the time they told him Santa was dead.
Mark has a great interest in flying and even took flying lessons, which scared Jill to death. He also has been taking karate for quite some years now.
Last season, Mark went through a very odd phase in which he only wore black. He hung out with only one friend, Ronny, who also wore only balck and rarely spoke. For Halloween, he made a macabre film of the family in which he killed them all.
Mark has never had any girlfriends and is currently in the eighth grade.
He outgrew his black stage and took to film. He made a movie for Tim to commorate the completion of his hot rod. Mark also took a film class and got Jill in hot water with a professor when he saw the tape Mark secretly videotaped of her.
