On screen
Cast
72 credited performers
Orlando Brown
Cornelius Fillmore (voice)
Tara Strong
Ingrid Third (voice)
Horatio Sanz
Horatio Vallejo (voice)
Wendie Malick
Dawn Folsom (voice)
Danny Tamberelli
Joseph Anza (voice)
Lauren Tom
Karen Tehama (voice)
Jeff Probst
Raycliff (voice)
Don LaFontaine
Narrator (voice)
Kyle Sullivan
SPEC Member (voice)
Michael Welch
Dimitri / Young Artist / NJ (voice)
Christopher Rodriguez Marquette
Jamie Townsend (voice)
Shaun Fleming
Theldin Fryburger / Texas (voice)
Mae Whitman
Robin / Sarah Beale (voice)
Debi Derryberry
Cheri Shotwell (voice)
Steven Weber
Tour Guide (voice)
Hadley Kay
Character not listed
Samm Levine
Character not listed
Thomas Dekker
James Heron (voice)
Rachael MacFarlane
Character not listed
Jack Johnson
Character not listed
Peter Newman
Eric Orben (voice)
Frankie Muniz
Augie Sansome (voice)
Anthony Stewart Head
Professor Third (voice)
Michelle Horn
Raylean Tingley (voice)
Daveigh Chase
Joyce Summitt (voice)
Adam Wylie
Character not listed
Raven-Symoné
Character not listed
Sean Whalen
Character not listed
Jeff Bennett
Plant Manager / Cowboy / Man #1 (voice)
Sean Marquette
Linwood (voice)
Aaron Fors
Character not listed
Phil LaMarr
Elderly Man / Snooty Student (voice)
Noel Fisher
Character not listed
Eli Marienthal
Character not listed
Josh Peck
Character not listed
Richard Riehle
Character not listed
Lauren Storm
Gladys / Alexis Bixbee (voice)
John Rhys-Davies
Character not listed
Kyle Gass
Mr. Collingwood (voice)
Kathy Kinney
Character not listed
Lynsey Bartilson
Character not listed
Holland Taylor
Mrs. Cornwall (voice)
Kurtwood Smith
Character not listed
Caroline Rhea
Character not listed
Marcus T. Paulk
Character not listed
R. Lee Ermey
Character not listed
Evan Matthew Cohen
Character not listed
Jack Salvatore Jr.
Character not listed
Olivia Hack
Character not listed
Hayden Panettiere
Yumi (voice)
Andrew James Allen
Character not listed
Gary Dourdan
Character not listed
Emy Coligado
Character not listed
Kristin Chenoweth
Character not listed
Vincent Pastore
Character not listed
Sam Gifaldi
Character not listed
Mary Hart
Character not listed
Renee Olstead
Character not listed
Patrick Bristow
Character not listed
James Gammon
Character not listed
Stacie Chan
Character not listed
Kiel Holmes
Augie Sansome (voice)
Ajay Naidu
Sanjay (voice)
Steve Carell
Mr. Delancey (voice)
Candi Milo
Receptionist (voice)
David Berry
Dustin (voice)
Klee Bragger
Mark Willington (voice)
Theo Greenly
Warren 'Checkmatey' Foote (voice)
Marcus Toji
Reporter / JC (voice)
Francesca Marie Smith
Penny Madrid (voice)
Sue Nelson
Overalls Wearing Kid (voice)
Jennifer Hale
Natasha (voice)