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)