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