Peter Newman is famous for his voice work for Rankin/Bass. In ThunderCats he provided the voices of Tygra, Wilykat, Bengali, and Monkian. In SilverHawks he provided the voices of Quicksilver, Mumbo Jumbo, and Timestopper. He also played the evil Duke of Zill & Wack Lizardi in Felix the Cat: The Movie. In 1987, Newman also provided the voice of the camp director of Camp Mimi-Mon for the Rankin/Bass show Mini Monsters.