Alan Oppenheimer
His best known roles include Oil Can Harry, Swifty and the narrator on The New Adventures of Mighty Mouse and Heckle & Jeckle, Ming the Merciless on Flash Gordon, the Overlord on BlackStar, Skeletor, Man-At-Arms and Mer-Man from Filmation's 1980's cartoon He-Man and the Masters of the Universe, and the voice of Prime Evil in the 1986 TV series, Filmation's Ghostbusters.