As Paul appears in only one episode, only not much is known about him. He visits Marilyn's house with his wife Peggy for Thanksgiving in "Moveable Feast". He acts intimidating when speaking to Will, which suggests that he used to bully him growing up.
Paul is portrayed by Jon Tenney, who was married to Teri Hatcher who played Susan in Desperate Housewives. Tina, Paul's father's mistress is played by Leslie Ann Warren, who played Susan's mother Sophie.