Robert Anthony "Robbie" Rist (born April 4, 1964) is an American actor, voice actor and musician who voices/sings Frankie Jupiter in Mighty Magiswords.
Robbie is known for playing Cousin Oliver on The Brady Bunch, Whiz on Kidd Video, voicing Choki Akimichi on Naruto, Stuffy on Doc McStuffims, Michaelangelo in the original Teenage Mutant Ninja Turtles film series and Mondo Gecko in Nickelodeon's Teenage Mutant Ninja Turtles cartoon.