The Stay Puft Marshmallow Man is a recurring antagonist from the Ghostbusters franchise, appearing as the final antagonist of the 1984 film Ghostbusters, an antagonist in the animated television series The Real Ghostbusters, and a major antagonist in Ghostbusters: The Video Game. Originally the vessel used by Gozer to destroy the world in Ghostbusters, Stay Puft became a ghost in its own right shortly afterwards.
He is voiced by Frank Welker.