Ricky Gervais Flippy (voice)
Stephen Root Grampa (voice)
Pete Davidson Petey the Cat (voice)
Isla Fisher Sarah Hatoff (voice)
Billy Boyd Seamus (voice)
Scott Menville 3D Guy (voice)
Laraine Newman Scientist (voice)
Kelly Stables Harold (voice)
Kate Micucci Dippy (voice)
Cheri Oteri Mayor (voice)
Maggie Wheeler Nurse (voice)
Gary A. Hecker Foley Supervisor
Gary Rizzo Sound Re-Recording Mixer
Lil Rel Howery Chief (voice)
Cam Clarke Indifferent Shop (voice)
Kimberly Bailey Gym (voice)
John Eric Bentley Living Spray Factory (voice)
Poppy Liu Butler (voice)
Christi Soper Hilt Casting
Melissa Villaseñor Realtor (voice)
Peter Hastings Writer, Dog Man / Officer Knight / Harold's House (voice), Director
Max Koch Rocco (voice)
Luenell Milly (voice)
Kevin McCann Grump (voice)
Dav Pilkey Book, Executive Producer
Rahnuma Panthaky Doctor (voice)
Mike Horton Foley Artist
Skip Stellrecht Ice Cream Building (voice)
Jana Schmieding Janet (voice)
Pearce Bunting Cheesesteak Guy (voice)
Karen Foster Robot (voice), Producer
Warren Sroka Apartment Building (voice)
Georgia Simon Hospital (voice)
Jeff Gross Foley Mixer
Brian Hopkins Editor, Big Jim (voice)
Hanna Kim Storyboard Artist
Adam Rosette Storyboard Artist
Jeremy Bernstein Storyboard Artist
Nate Wragg Production Design
Tim Gibson Animation Supervisor
Tom Howe Original Music Composer
Yung Gravy Mr. Whiskers (voice), Songs
Anthony Zierhut Head of Story
Lucas Hopkins Calderon Li'l Petey (voice)
Arran Jay Baker Lead Animator
Shabrayia Cleaver Associate Producer
Sarah Gold Amburgey Storyboard Artist
Andrea Ferrara Lead Animator
Percy Rustomji Surfer (voice)
Carder Scholin Storyboard Artist
Gaël Matchabelli Lead Animator
Marceline Tanguay Storyboard Artist
Daniel Tal Additional Storyboarding
Chris Heltzel Storyboard Artist
Valentin Beaumont Visual Effects Technical Director
Aziz Kocanaogullari Lead Animator
Christopher Zibach Art Direction
Sonny Onorati Radio Building (voice)
Scott Cullen Head of Layout
Bianca Margiotta Associate Producer
Cassandra Fanning Digital Supervisor
Emma Porter Lead Animator
Daria Khil Additional Storyboarding
Camryn Del Vecchio Additional Storyboarding