A wealthy businessman and husband to former actress Kay Stone. He finances Kay's career and offers Marty an exhibition match against Koto Endo in Tokyo. Initially rejected, he later agrees to revive the deal only after forcing Marty to submit to a humiliating public spanking, but ultimately denies him passage home.
Kay and Milton are married, with Milton acting as her financial backer.
Rockwell exerts dominant control over Marty, demanding humiliation in exchange for opportunities.
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