Joel McHale as Elliot (Voice)

Mike Epps as Boog (Voice)

Cody Cameron as Mr. Weenie (voice)

Georgia Engel as Bobbie (voice)

Jane Krakowski as Giselle (Voice)

Billy Connolly as McSquizzy (voice)

Crispin Glover as Fifi (voice)

Maddie Taylor as Deni / Buddy / Ian / Additional Voices (voice)

Steve Schirripa as Roberto (voice)

Fred Stoller as Stanley (voice)

Sean Mullen as Roger (voice)

Diedrich Bader as Rufus (voice)

Olivia Hack as Charlene (voice)

Danny Mann as Serge (voice)

Nika Futterman as Rosie (voice)

Michelle Murdocca as Maria (voice)

Jacquie Barnbrook as Fifi's Owner (voice)

Kevin Michael Richardson as Additional Voices (voice)

Maurice LaMarche as Additional Voices (voice) (uncredited)

Jeff Bennett as Additional Voices (voice)

John Hans Tester as Additional Voices (voice)

Walter Jones as Additional Voices (Voice)

Scott Menville as Additional Voices (voice)