Ryan ReynoldsJerry Hickfang / Mr. Whiskers (voice) / Bosco (voice) / Deer (voice) / Bunny Monkey (voice)

Gemma ArtertonFiona

Anna KendrickLisa

Jacki WeaverDr. Warren

Ella SmithAlison

Paul ChahidiDennis Kowalski

Stanley TownsendSheriff Weinbacher

Adi ShankarJohn

Sam SpruellDave

Valerie KochJerry's Mother

Gulliver McGrathJerry (12 years old)

Paul BrightwellJerry's Stepfather

Alessa KordeckSheryl

Michael PinkJesus

Ricardia BramleySheila Hammer

Alex TondowskiTom

Kai Fung RieckChinese Elvis

Marjane SatrapiDirector

Michael R. PerryWriter

Matthew RhodesProducer

Spencer SilnaProducer

Adam C. StoneExecutive Producer

Henning MolfenterExecutive Producer

Roy LeeProducer

Cathy SchulmanExecutive Producer

Christoph FisserExecutive Producer

John Powers MiddletonExecutive Producer

Adi ShankarProducer

Douglas Saylor Jr.Executive Producer

Elika PortnoyExecutive Producer

Charlie WoebckenExecutive Producer