Fox appeared as a British Major in "The Phantom Major", episode 3 of "F Troop", and in "Tea and Empathy", episode 17 of season 6 of "M*A*S*H". In 1964, Fox appeared in episode 117 of "The Dick Van Dyke Show", titled "Girls Will Be Boys". Fox plays the father of a little girl who keeps beating up Richie Petrie. He also appeared in "Teacher's Petrie", where he played a night school creative writing teacher, and in "Never Bathe on Saturday" as the house detective. In 1965 Fox made a guest appearance on "Perry Mason" as murderer Peter Stange in "The Case of the Laughing Lady."