The Grim Adventures of the Kids Next Door

Grey DeLisle

Mandy (voice)

Ben Diskin

Numbuh 1 / Numbuh 2 / Delightful Children F.D.T.L. (voice)

Lauren Tom

Numbuh 3 (voice)

Dee Bradley Baker

Numbuh 4 / Delightful Children F.D.T.L. (voice)

Cree Summer

Numbuh 5 / Delightful Children F.D.T.L. (voice)

Richard Steven Horvitz

Billy / Harold (voice)