Robbie Rist is an American actor, known for playing Cousin Oliver in The Brady Bunch, Martin in Grady and “Little John” in Big John, Little John. Rist is also known for voicing assorted characters in television shows, games and movies, including Stuffy, the overly-proud stuffed dragon in Doc McStuffins, Whiz in Kidd Video, Star in Balto, Maroda in Final Fantasy X, Choji Akimichi in Naruto, and Michelangelo in the films Teenage Mutant Ninja Turtles (1990), Teenage Mutant Ninja Turtles II: The Secret of the Ooze (1991), Teenage Mutant Ninja Turtles III (1993), and Casey Jones (2011). Additionally, he and director Anthony C. Ferrante provided music for the Sharknado film and the theme song for the Sharknado franchise. He played Ted and Georgette Baxter’s adopted son David on The Mary Tyler Moore Show. He was also the voice of the stick man from the Handi Snacks commercials.