John Kassir, the voice of the Crypt Keeper from “Tales from the Crypt,” will be on hand at the Demon Knight Masquerade Ball at the Gothic Theatre on Oct. 28. We’re awash in novel, inspired or otherwise bizarre Halloween celebrations, given Colorado’s party-loving culture, but here are a couple unique ones: the Demon Knight Masquerade Ball at the Gothic Theatre features John Kassir (voice of the Crypt Keeper from “Tales of The Crypt”) and music from First Jason (feat.