Butch Patrick
Milo
Mel Blanc
Officer Short Shrift / Dodecahedron / Demon of Insincerity (voice)
Daws Butler
Whether Man / Senses Taker / Terrible Trivium / Gelatinous Giant (voice)
Candy Candido
Awful DYNN (voice)
Hans Conried
King Azaz / The MathemaGician (voice)
June Foray
Ralph / Faintly Macabre / Princess of Pure Reason (voice)
Patti Gilbert
Princess of Sweet Rhyme (voice)
Shepard Menken
Spelling Bee / Chroma (voice)
Cliff Norton
akofonous A. Dischord / Tollbooth Speaker (voice)
Larry Thor
Tock The Watchdog (voice)
Les Tremayne
Humbug (voice)