On screen
Cast
41 credited performers
Ben Diskin
Numbuh 1 / Numbuh 2 (voice)
Lauren Tom
Numbuh 3 (voice)
Dee Bradley Baker
Numbuh 4 (voice)
Cree Summer
Numbuh 5 (voice)
Tom Kenny
Numbuh 42 / Numbuh Ezekiel (voice)
Jennifer Hale
Computer (voice)
Daran Norris
RAMON-4 (voice)
Jeff Bennett
Dr. Teef (voice)
Candi Milo
Edna Jucation (voice)
Jason Harris
(voice)
Frank Welker
Truck Driver (voice)
Tara Strong
Girl (voice)
Grey DeLisle
Lizzie Devine / Laura Limpin (voice)
Maurice LaMarche
Father (voice)
Mark Hamill
Stickybeard / Sumo Wrestler / Pirate (voice)
Kevin Michael Richardson
Ice Cream Man / Ice Cream Beast (voice)
James Arnold Taylor
Character not listed
Rachael MacFarlane
Numbuh 362 (voice)
Dave Wittenberg
Character not listed
Rob Paulsen
Mr. Washer / Chili Dog Vendor (voice)
Keone Young
Character not listed
Carlos Alazraqui
Character not listed
Jess Harnell
Tony Clownarelli (voice)
Jason Marsden
Character not listed
Billy West
Character not listed
Richard Steven Horvitz
Character not listed
Brian Tochi
Character not listed
Greg Cipes
Character not listed
Charlie Schlatter
Character not listed
Jill Talley
Character not listed
Khary Payton
Character not listed
Josh Peck
Numbuh 50 Million B.C. (voice)
Matt Levin
Hooves (voice)
Roger Rose
Little Juan (voice)
Roger L. Jackson
Bonko (voice)
Hynden Walch
Numbuh Rebecca (voice)
Eddie Deezen
Ice Cream Guy (voice)
Gregg Berger
Hotline (voice)
Tom Warburton
Chef (voice)
John DiMaggio
Big Brother (voice)
Tom Kane
Simon / Monkey (voice)