Mason is Stanley Walker's son from his first wife Cathy. He is the younger brother of Olivia and stepson of Karen Walker. Similar to his father, Mason is also an unseen character described as being obese.
Biography[]
Karen has often criticized Mason for his gluttony (referring to him sometimes as "the fat one") and that she and his sister Olivia usually plays pranks on Mason and Stanley with food.[1] Karen also often mentions being a rather detached stepmother to Mason and Olivia, admitting that she once lost Mason in Egypt for four weeks, before he found his way home, covered in stickers.[2]
During one episode, Karen visits Mason during a swim try-out. She cheers and applauds and has a conversation with him until Jack points out to Karen that he is talking to the wrong boy. In a deleted scene in season 5, Karen is mad that singer Debbie Harry took Mason's virginity at Stanley's funeral.