Brian was very tired of Dylan's bad attitude, so he turned him into a nicer person. Peter, sick of Brian's overemotional reactions to the slightest things, convinced Tracy to take Dylan back. Even though Brian was against it, Dylan said he must go because he can change his mom's life the same way Brian changed his. Glenn Quagmire pointed out to Brian during his rant in "Jerome Is the New Black" that he is not a part of his son's life. Peter brings up that Brian's son was an actor in "The Peanut Butter Kid". Dylan is voiced by Seth Green.