Marvin_Miller_(actor)--Karl_Bohm

Marvin Elliott Miller (born Marvin Mueller; July 18, 1913 – February 8, 1985) was an American actor. Possessing a deep baritone voice, he began his career in radio in St. Louis, Missouri before becoming a Hollywood actor. He is remembered for voicing Robby the Robot in the science fiction film Forbidden Planet (1956), a role he reprised in the lesser-known The Invisible Boy (1957).
Miller's next most notable role is that of Michael Anthony, the loyal assistant of Paul Frees's generous billionaire John Beresford Tipton Jr., on the TV series The Millionaire (1955–1960).