Producer
Herman Cohen first considered using "ape" actor
Steve Calvert, who had worked with Cohen on
Bride of the Gorilla (1951) and
Bela Lugosi Meets a Brooklyn Gorilla (1952), but Calvert had retired from performing in his gorilla suit. Cohen turned to another renowned "ape" actor
George Barrows, but only hired Barrows' gorilla costume, not Barrows himself. The actor
Paul Stockman was instead chosen, based primarily on being a good fit for Barrows' costume. Barrows was annoyed when his gorilla costume was returned from England in bad shape.
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