Suggestions by @yolol

Bobby McFerrin

as Additional Slipknot Inmates in Superjail! (90's Cartoon)

Michael Jackson

as Additional Slipknot Inmates in Superjail! (90's Cartoon)

Russi Taylor

as Cancer in Superjail! (90's Cartoon)

Harry Shearer

as Combaticus in Superjail! (90's Cartoon)

Nancy Cartwright

as The Vegetable Garden in Superjail! (90's Cartoon)

Harry Shearer

as The Twins in Superjail! (90's Cartoon)

Gregg Berger

as Franco in Superjail! (90's Cartoon)

Frank Welker

as Monster Convict in Superjail! (90's Cartoon)

Jack Riley

as Prison Peedee in Superjail! (90's Cartoon)

Tom Kane

as "Special Needs" Inmates in Superjail! (90's Cartoon)

Gregg Berger

as Starving Inmate in Superjail! (90's Cartoon)

Gregg Berger

as Sweet Cheeks in Superjail! (90's Cartoon)

Reza Kianian

as Turban in Superjail! (90's Cartoon)

Gregg Berger

as Fatty in Superjail! (90's Cartoon)

Billy West

as Lord Stingray in Superjail! (90's Cartoon)

Charlie Adler

as Ash in Superjail! (90's Cartoon)

Ed Gilbert

as Nicky in Superjail! (90's Cartoon)

Thom Huge

as Paul Guaye in Superjail! (90's Cartoon)

Lorenzo Music

as Jean-Baptiste Le Ghei in Superjail! (90's Cartoon)

Bird Sound Effects

as Bird in Superjail! (90's Cartoon)