Alan Oppenheimer

Alan Louis Oppenheimer (born April 23, 1930) is an American actor. He is best known for working with Filmation in the 1970s and 1980s.
His best known roles include Oil Can Harry, Swifty and the narrator on "The New Adventures of Mighty Mouse and Heckle &amp; 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".
Recently, he voiced the Scientist in "9" and Old Timer in "Toy Story 4".