Categories Halloween Movies Happy Halloween, Scooby-Doo! Trailer Features Elvira And More! Post author By Vic Sage Post date July 5, 2020 No Comments on Happy Halloween, Scooby-Doo! Trailer Features Elvira And More! Check out the trailer for Happy Halloween, Scooby-Doo! – featuring Elvira, the Mistress of the Dark! Tags Batman, Cassandra Peterson, Charlie Brown, Creepshow, Dwight Schultz, Elvira, Frank Welker, Grey Griffin, Halloween, Hanna-Barbera, Happy Halloween, Hocus Pocus, Kate Micucci, Matthew Lillard, Maxwell Atoms, Scooby-Doo, Tales from the Crypt, The A-Team, The Conjuring, Trick r Treat, Warner Bros. Home Entertainment