T.J. Detweiler (voice)

Andrew Lawrence

Acting

Vince La Salle (voice)

Rickey D'Shon Collins

Acting

Spinelli (voice)

Pamela Adlon

Acting

Gretchen Grundler (voice)

Ashley Johnson

Acting

Mikey Blumberg (voice)

Jason Davis

Acting

Gus Griswald (voice)

Courtland Mead

Acting

Ms. Finster / Mrs. Detweiller (voice)

April Winchell

Acting

Principal Peter Prickly (voice)

Dabney Coleman

Acting

Digger Dave / Randall (voice)

Ryan O'Donohue

Acting

Mikey's Singing Voice (voice)

Robert Goulet

Acting

Becky (voice)

Melissa Joan Hart

Acting

Fenwick (voice)

Peter MacNicol

Acting

Dr. Rosenthal (voice)

Tony Jay

Acting

Dr. Phillium Benedict (voice)

James Woods

Acting

Lunchlady Harriet (voice)

Andrea Martin

Acting

Lunchlady Irma / Ms. Lemon / Opera Director / Dr. Steinheimer (voice)

Tress MacNeille

Acting

Cop #1 (voice)

Nicholas Turturro

Acting

Cop #2 (voice)

Kevin Michael Richardson

Acting

Guard #1 (voice)

Dan Castellaneta

Acting

Guard #2 (voice)

Diedrich Bader

Acting

Counselor (voice)

Kath Soucie

Acting

Mort Chalk (voice)

Charles Kimbrough

Acting

Superintendent (voice)

Robert Stack

Acting

Coach (voice)

Ken Swofford

Acting

Ashley B / Swinger Girl / Upsidedown Girl (voice)

Francesca Marie Smith

Acting

Captain Brad Lawson (voice)

Erik von Detten

Acting

Coach Kloogie / Mr. Detweiler (voice)

Paul Willson

Acting

Jordan (voice)

Patrick Renna

Acting

Ashley A (voice)

Anndi McAfee

Acting

King Bob (voice)

Lane Toran

Acting

Ashley Q (voice)

Rachel Crane

Acting

Digger Sam (voice)

Klee Bragger

Acting

Colonel O'Malley (voice)

R. Lee Ermey

Acting

Mr. Yamashiro (voice)

Clyde Kusatsu

Acting

Bald Guy (voice)

Clancy Brown

Acting

Miss Grotke (voice)

Allyce Beasley

Acting

Tech #1 (voice)

Gregg Berger

Acting

Cap'n Sticky (voice)

E. G. Daily

Acting

Dr. Lazenby / Tech #2 (voice)

Ron Glass

Acting

Technician (voice)

Mark Robert Myers

Acting

Golfer #2 / Scientist #2 (voice)

Phil Proctor

Acting

Soldier Kid / Wrestler Kid (voice)

Justin Shenkarow

Acting

Hustler Kid (voice)

Michael Shulman

Acting

Mrs. Flo Spinelli (voice) (uncredited)

Katey Sagal

Acting