William Finley as Winslow Leach / The Phantom Paul Williams as Swan / The Phantom's singing voice Jessica Harper as Phoenix Gerrit Graham as Beef Raymond Louis Kennedy as Beef's singing voice George Memmoli as Arnold Philbin (named in tribute to Mary Philbin who starred as Christine in the 1925 film version of Phantom of the Opera) Archie Hahn, Jeffrey Comanor, and Peter Elbling (credited as Harold Oblong) as The Juicy Fruits / The Beach Bums / The Undead Rod Serling (uncredited) as Introductory voice Janus Blythe as Groupie Mary Margaret Amato as Swan's Groupie Cheryl Smith as Groupie