Jeff Goldblum Dr. Armstrong (voice)
Lisa Kudrow Janice Templeton (voice)
Alec Baldwin Theodore Templeton (voice)
James Marsden Tim Templeton (voice)
Hans Zimmer Original Music Composer
Ariana Greenblatt Tabitha Templeton (voice)
Tom McGrath Dr. Tiffany Hamilton (voice), Director, Story
Eva Longoria Carol Templeton (voice)
Jimmy Kimmel Ted Templeton (voice)
Amy Sedaris Tina Templeton (voice)
Walt Dohrn Baby Bouncer (voice)
Raphael Alejandro Nathan / Lead Baby Ninja (voice)
Pedro Eustache Musician
Michael McCullers Writer, Story, Characters
David Soren Jimbo (voice)
Reyn Doi Box Kid (voice)
Christi Soper Hilt Casting
Miles Bakshi Young Tim Voice-Over (voice)
James Ryan Story Bear (Connie) (voice)
David P. Smith Movie Patron (voice)
Paul N.J. Ottosson Sound Designer, Supervising Sound Editor
Michael J. Broomberg Foley Artist
Lisa Curtis Saunders Pipeline Technical Director
Marla Frazee Novel, Producer
James McGrath Wizzie (voice)
Christian Schaanning Sound Effects Editor
Nova Reed Little Bo Peep Baby (voice)
Dave Needham Glue Baby (voice)
Jeff Hermann Producer
Beau Borders Sound Re-Recording Mixer
Raymond Zibach Production Design
Mark A. Hester Editor
Serenity Reign Brown Meghan (voice)
Andy Schuhler Art Direction
Matt Yocum Sound Effects Editor
April Lawrence Acorn Center Computer (voice)
Nelson Yokota Storyboard Artist
Stephen Wood Special Effects
John Swanson Associate Producer
Andrew Harkins Animation
Steve Mazzaro Original Music Composer
Mary Blee Editor
Marjorie Cohn Pageant Mom 2 (voice)
James Morioka Dialogue Editor
Nicholas Gist The Triplets (voice)
Ashlyn Lundahl 'No' Girl (voice)
Jon Eric Schmidt Associate Producer
Luke Schwarzweller Sound Mix Technician
Angelo Raguso Sound Mixer
Carl Roberts Foley Recordist
Molly K. Gray Creepy Girl (voice)
Christopher Brock Art Direction
Collin Erker Time Out Kid (voice)
Connor Albrecht Dreidel Kid (voice)
Christopher Gonzalez Animation
Kristin Lowe Pageant Mom 1 (voice)