Butch Patrick

Character: Milo

Mel Blanc

Character: Officer Short Shrift / Dodecahedron / Demon of Insincerity (voice)

Daws Butler

Character: Whether Man / Senses Taker / Terrible Trivium / Gelatinous Giant (voice)

Candy Candido

Character: Awful DYNN (voice)

Hans Conried

Character: King Azaz / The MathemaGician (voice)

June Foray

Character: Ralph / Faintly Macabre / Princess of Pure Reason (voice)

Patti Gilbert

Character: Princess of Sweet Rhyme (voice)

Shepard Menken

Character: Spelling Bee / Chroma (voice)

Cliff Norton

Character: akofonous A. Dischord / Tollbooth Speaker (voice)

Larry Thor

Character: Tock The Watchdog (voice)

Les Tremayne

Character: Humbug (voice)