Grey DeLisle
Mandy (voice)
Acting
Ben Diskin
Numbuh 1 / Numbuh 2 / Delightful Children F.D.T.L. (voice)
Acting
Lauren Tom
Numbuh 3 (voice)
Acting
Dee Bradley Baker
Numbuh 4 / Delightful Children F.D.T.L. (voice)
Acting
Cree Summer
Numbuh 5 / Delightful Children F.D.T.L. (voice)
Acting
Richard Steven Horvitz
Billy / Harold (voice)
Acting
Greg Eagles
Grim (voice)
Acting
Rachael MacFarlane
Numbuh 362 (voice)
Acting
Matt Levin
Numbuh 60 (voice)
Acting
Tony Sampson
Eddy (voice)
Acting
C.H. Greenblatt
Fred Fredburger (voice)
Writing
Rachael MacFarlane
Mindy / Numbuh 362 (voice)
Acting
Vanessa Marshall
Irwin (voice)
Acting
Dave Wittenberg
Numbuh 74.239 (voice)
Acting
Matt Hill
Ed (voice) (uncredited)
Acting
Sam Vincent
Edd (voice) (uncredited)
Acting