On screen
Cast
31 credited performers
Myles Jeffrey
T.J. Detweiler (voice)
Pamela Adlon
Spinelli (voice)
Dabney Coleman
Principal Prickley (voice)
Ashley Johnson
Gretchen Grundler (voice)
Allyce Beasley
Miss Grotke (voice)
Rickey D'Shon Collins
Vince LaSalle (voice)
Jason Davis
Mikey Blumberg (voice)
Courtland Mead
Gus Griswald (voice)
Andrew Lawrence
Younger T.J. (voice)
Artwork unavailable
Lane Toran
King Bob (voice)
Artwork unavailable
Klee Bragger
Digger Sam (voice)
April Winchell
Miss Finster (voice)
Rachel Crane
Ashley Q (voice)
Ross Malinger
Older T.J. (voice)
Danny Cooksey
(voice)
Jane Curtin
(voice)
Aria Noelle Curzon
Cornchip Girl (voice)
E. G. Daily
Digger #1 (voice)
Miles Marsico
(voice)
Anndi McAfee
Ashley A (voice)
Sam McMurray
Lt. Griswald (voice)
Ryan O'Donohue
Digger Dave / Randall (voice)
Artwork unavailable
Patricia Renna
(voice)
Justin Shenkarow
Gelman (voice)
Michael Shulman
Francis the Hustler Kid (voice)
Francesca Marie Smith
Upside-Down Girl / Ashley T / Swinger Girl (voice)
Artwork unavailable
Aaron Spann
(voice)
Kath Soucie
Hector / Cindy / Gus's Mom (voice)
Tara Strong
Spinelli's Doll (voice)
Erik von Detten
Erwin Lawson (voice)
Artwork unavailable
David Berry
(voice)