One of the original top executives of the newly formed
Metro-Goldwyn-Meyer super studio in 1924, where he would remain for the
remainder of his life. Rapf held the title of Production Supervisor in
addition to acting as a line producer as well as one of
Irving Thalberg's inner
circle of supervisors. At the end of the reign of
Louis B. Mayer, Rapf
remained a Mayer loyalist and an enemy of MGM head
Dore Schary.