John Blyth Barrymore

as Horatio

as Charles Johnson

as Vincent

as Thomas

as Floyd / Slim

as Driver #2

as Grandpa

as Mayor Augustus Harold

as Strange Man, as Tess

as Pianist

as Dr. Paul Hamilton

as Robert Glass

as Hotel Manager

as Pizza Delivery Boy

as Avery

as Additional Voices (voice)

as Additional Voice (Voice)

as Patient #1

as Restaurant Manager (uncredited)

as Recording Engineer

as Mad Doctor

as Harold

as Student

as John / Jack

as Punk Vampire