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