Junior & The Science Fair

Nancy Cartwright

(voice)

Pamela Adlon

Additional Voices (voice)

Brad Garrett

Additional Voices (voice)

Ben Diskin

Junior Healy (voice)

E. G. Daily

Cyndi (voice)

Cree Summer

Spencer (voice)

John Kassir

(voice)

Gilbert Gottfried

Peabody (voice)

Jonathan Harris

(voice)

Iona Morris

Additional Voices (voice)

Mark L. Taylor

(voice)

Oliver Anderson

Clown (voice)

John Astin

Additional Voices (voice)

S. Scott Bullock

Additional Voices (voice)

Jim Cummings

Additional Voices (voice)

Debi Derryberry

Additional Voices (voice)

Pat Fraley

Additional Voices (voice)

Dana Hill

Additional Voices (voice)

Maurice LaMarche

Additional Voices (voice)

Danny Mann

Additional Voices (voice)

Edie McClurg

Additional Voices (voice)

Laraine Newman

Additional Voices (voice)

April Winchell

Additional Voices (voice)