Alan Oppenheimer

Alan Oppenheimer (born April 23, 1930) is an American character actor and voice actor. He has performed numerous roles on live-action television since the 1960's, and has had an active career doing voice work in cartoons since the 1970's. He's best known for voicing Skeletor in the Original He-Man, Falcor, Gmork, and Rock Biter in the first Neverending Story movie and playing a Klingon clinic in Star Trek. He voiced Rhinokey and Crocosaurus in The Wuzzles, Colonel Beauregard DuBark in DuckTales, Aldrin Klordane, Captain Kernel, and Plato in Chip 'n Dale Rescue Rangers and Mr. Pomeroy in TaleSpin.

Trivia
Alan Oppenheimer is actually the third cousin of J. Robert Oppenheimer, who was one of the people responsible for the development of the Manhattan Project, the World War II program that worked to create the first atomic weapons.