Ben Diskin

Numbuh 1 / Numbuh 2 (voice)

Lauren Tom

Numbuh 3 (voice)

Dee Bradley Baker

Numbuh 4 (voice)

Cree Summer

Numbuh 5 (voice)

Tom Warburton

Chef (voice)

Billy West

Acteur

Richard Steven Horvitz

Acteur

Brian Tochi

Acteur

Greg Cipes

Acteur

Charlie Schlatter

Acteur

Jill Talley

Acteur

Khary Payton

Acteur

Maurice LaMarche

Father (voice)

Mark Hamill

Stickybeard (voice)

Josh Peck

Numbuh 50 Million B.C. (voice)

Frank Welker

Bus Driver (voice)

Kevin Michael Richardson

Acteur

James Arnold Taylor

King Sandy / Knight #2 / Guard #1 (voice)

Jeff Bennett

Destructo Dad (voice)

Keone Young

Acteur

Carlos Alazraqui

Acteur

Jess Harnell

Tony Clownarelli (voice)

Jason Marsden

Numbuh 80 (voice)

Daran Norris

(voice)

Rachael MacFarlane

(voice)

Jason Harris

Numbuh 274 (voice)

Tom Kenny

Mr. Jelly / Knightbrace (voice)

Dave Wittenberg

Nick (voice)

Rob Paulsen

Mr. Mogul / Monkey (voice)

Jennifer Hale

Mrs. Uno / Major Mrs. Manners (voice)

Candi Milo

Grandma Lydia (voice)

Matt Levin

Hooves (voice)

Roger Rose

Little Juan (voice)

Tara Strong

Sally Sanban (voice)

Grey DeLisle

Laura Limpin / Additional Voices (voice)

Roger L. Jackson

Bonko (voice)

Hynden Walch

Numbuh Rebecca (voice)

Eddie Deezen

Ice Cream Guy (voice)

Gregg Berger

Hotline (voice)

John DiMaggio

Big Brother (voice)

Tom Kane

Simon / Monkey (voice)