Robert Anthony "Robbie" Rist (born April 4, 1964; 57 years old) was the voice of Michaelangelo in all three live-action TMNT movies. He is perhaps most famously known for portraying "Cousin Oliver" in the later seasons of The Brady Bunch. Rist would later voice another ninja, Choji Akimichi, in the English dub of the anime Naruto.
Rist provided the voice of The Alien in Angry Video Game Nerd: The Movie which also had Stephen Mendel playing the film antagonist, General Dark Onward.
Rist appeared on To Tell the Truth on 7/7/2019 in a segment where the three contestants said, "I am a ninja turtle."