T.J. Detweiler (voice)
Myles Jeffrey
Spinelli (voice)
Pamela Adlon
Digger Sam (voice)
Klee Bragger
Miss Finster (voice)
April Winchell
Ashley Q (voice)
Rachel Crane
Older T.J. (voice)
Ross Malinger
(voice)
Danny Cooksey
Jane Curtin
Cornchip Girl (voice)
Aria Noelle Curzon
Digger #1 (voice)
Elizabeth Daily
Miles Marsico
Ashley A (voice)
Anndi McAfee
Principal Prickley (voice)
Dabney Coleman
Lt. Griswald (voice)
Sam McMurray
Digger Dave / Randall (voice)
Ryan O'Donohue
Patricia Renna
Gelman (voice)
Justin Shenkarow
Francis the Hustler Kid (voice)
Michael Shulman
Upside-Down Girl / Ashley T / Swinger Girl (voice)
Francesca Marie Smith
Aaron Spann
Hector / Cindy / Gus's Mom (voice)
Kath Soucie
Spinelli's Doll (voice)
Tara Strong
Erwin Lawson (voice)
Erik von Detten
Gretchen Grundler (voice)
Ashley Johnson
David Berry
Miss Grotke (voice)
Allyce Beasley
Vince LaSalle (voice)
Rickey D'Shon Collins
Mikey (voice)
Jason Davis
Gus Griswald (voice)
Courtland Mead
Younger T.J. (voice)
Andrew Lawrence
King Bob (voice)
Lane Toran
Production Supervisor
Michael Gracey
Executive Producer
Paul Germain
Supervising Editor
Richard L. McCullough
Director
Howy Parkins
Supervising Producer
Writer
Elijah Aron
Additional Dialogue
Etan Cohen
Brenda Piluso
Bart Jennett
Original Music Composer
Denis M. Hannigan
Chuck Sheetz
Peter Gaffney
Mark Drop
Jonathan Rosenthal
Steve Viksten
Joe Purdy
Phil Walsh
Joe Ansolabehere
Associate Producer
John I. Carrillo
Producer
Editor
Susan Edmunson
Casting
Allyson Bosch
Casting Director
Jamie Thomason
Art Direction
Eric S. Keyes
Post-Production Manager
P.J. Aminpour
Mark Brammeier
Michael Tyau
Character Designer
José Zelaya