Ian McKellen as James Whale

Brendan Fraser as Clayton Boone

Lynn Redgrave as Hanna

Lolita Davidovich as Betty

David Dukes as David Lewis

Kevin J. O'Connor as Harry

Mark Kiely as Dwight

Jack Plotnick as Edmund Kay

Rosalind Ayres as Elsa Lanchester

Jack Betts as Boris Karloff

Matt McKenzie as Colin Clive

Todd Babcock as Leonard Barnett

Cornelia Hayes O'Herlihy as Princess Margaret

Brandon Kleyla as Young Whale

Pamela Salem as Sarah Whale

Michael O'Hagan as William Whale

David Millbern as Dr. Payne

Amir Aboulela as The Monster

Marlon Braccia as Elizabeth Taylor

Jesse Long as Assistant Director

Owen Masterson as Camera Assistant

Lisa Vastine as Librarian

Kent George as Whale at 25

Martin Ferrero as George Cukor

David Fabrizio as Photographer

Jesse James as Michael Boone

Lisa Darr as Dana Boone

Paul Michael Sandberg as Sound Man

Judson Mills as Young Man at Pool

Arthur Dignam as Ernest Thesiger (uncredited)

John Gatins as Kid Saylor (uncredited)

Curtis Harrington as Cukor Party Guest (uncredited)

Celeste Lecesne as Jack Pierce (uncredited)

Sarah Ann Morris as Daisy (uncredited)

Richard Pines as Bar Patron (uncredited)

Jennifer Tolkachev as Party Guest (uncredited)