Alan Louis Oppenheimer is an American actor and voice actor. He has performed numerous roles on live-action television since the 1960s and has had an active career doing voice work in cartoons since the 1970s. He is best known for voicing Skeletor and Cringer/Battlecat in the original He-Man, Falkor, Gmork, and Rock Biter in the first Neverending Story movie, and playing a Klingon cleric in Star Trek: The Next Generation.
For Disney, he played Mr. Joffert in Freaky Friday, and he voiced Councillor Bearybowun in Adventures of the Gummi Bears, Rhinokey and Crocosaurus in The Wuzzles, Colonel Beauregard DuBark in DuckTales, Aldrin Klordane, Captain Colonel, and Plato in Chip 'n Dale Rescue Rangers, and Mr. Pomeroy in TaleSpin. He also voiced Old Timer in Disney/Pixar's Toy Story 4 (2019).