Happy Halloween, Scooby-Doo! is an American animated direct-to-video supernatural comedy mystery film produced by Warner Bros. Animation and distributed by Warner Bros. Home Entertainment. It is the thirty-fifth entry in the direct-to-video series of Scooby-Doo films and is set to be released on October 6, 2020. Cast * Frank Welker as Scooby-Doo, Fred Jones * Grey Griffin as Daphne Blake * Matthew Lillard as Shaggy Rogers * Kate Micucci as Velma Dinkley * Bill Nye as himself * Cassandra Peterson as Elvira, Mistress of Darkness * Dwight Schultz as Doctor Jonathan Crane / Scarecrow, a recent escapee from Arkham Asylum Production On July 5, 2020, Syfy announced the film with the debut of a trailer. It was directed by Maxwell Atoms with Sam Register as producer.