Jim Carrey
Walter Sparrow / Fingerling
Virginia Madsen
Agatha Sparrow / Fabrizia
Logan Lerman
Robin Sparrow
Danny Huston
Isaac French / Dr. Miles Phoenix
Lynn Collins
Suicide Blonde / Mrs. Dobkins / Young Fingerling's Mother
Mark Pellegrino
Kyle Finch
Ed Lauter
Father Sebastian
Corey Stoll
Sergeant Burns
Paul Butcher
Young Fingerling / Young Walter
Patricia Belcher
Dr. Alice Mortimer
Lesli Margherita
Attractive Coed
Tara Karsian
Box Company Clerk
Walter Soo Hoo
Chinese Restaurant Owner