John Kassir is best known as the voice of the Crypt Keeper in HBO's Tales from the Crypt franchise. Tales from the Crypt (1989), Pete's Dragon (2016) and The Three Stooges (2000). Kassir is also known for his role as Ralph in the Off-Broadway show Reefer Madness, as well as its film adaptation, as well as his voice work as Buster Bunny (taking over for Charlie Adler late in the final season of Tiny Toon Adventures).