Ryan Reynolds Jerry Hickfang / Mr. Whiskers (voice) / Bosco (voice) / Deer (voice) / Bunny Monkey (voice)
Anna Kendrick Lisa
Gemma Arterton Fiona
Paul Brightwell Jerry's Stepfather
Stanley Townsend Sheriff Weinbacher
Adi Shankar John, Producer
Jacki Weaver Dr. Warren
Sam Spruell Dave
Gulliver McGrath Jerry (12 years old)
Paul Chahidi Dennis Kowalski
Elika Portnoy Executive Producer
Roy Lee Producer
Marjane Satrapi Director
Matthew Rhodes Producer
Maxime Alexandre Director of Photography
Marco Mehlitz Co-Producer
Ella Smith Alison
Michael R. Perry Writer
John Powers Middleton Executive Producer
Larry Blake ADR Mixer
Christoph Fisser Executive Producer
Henning Molfenter Executive Producer
Valerie Koch Jerry's Mother
Cathy Schulman Executive Producer
Udo Kramer Production Design
Ricardia Bramley Sheila Hammer
Michael Pink Jesus
Carl Woebcken Executive Producer
Kai Fung Rieck Chinese Elvis
Spencer Silna Producer
Alex Foster Co-Producer
Bettina Helmi Costume Design
Nathalie Tissier Key Makeup Artist, Makeup Designer
Mathias Schwerbrock Line Producer
Alessa Kordeck Sheryl
Stéphane Roche Editor
Nicole Barton Co-Producer
Douglas Saylor Jr. Executive Producer
Alex Tondowski Tom
Adam C. Stone Executive Producer
Thomas Nickel Co-Producer
Olivier Bernet Original Music Composer