Sherlock Holmes: Monster Slayer

 is an American animated mystery-fantasy-comedy film based on  by, being developed by TBD. It is produced by Disney Television Animation and it will premiere on Disney Channel and Disney XD on October 31st, 2020.

Synopsis
Sherlock Holmes is considered one of London's finest detectives and has solved several crimes during his life, even the ones who were thought to be impossible. However, things change when Professor Moriarty finds out about an ancient book that allows him to free many monsters as Holmes now needs to find ways to hunt them down before the world gets overrun by monsters.

Main

 * Sherlock Holmes (voiced by David Tennant) - a genius private detective who now hunts for any TBD.
 * Dr. John Watson (voiced by Rodger Bumpass) - Holmes' resourceful assistant who TBD.

Supporting

 * Irene Adler (voiced by Kari Wahlgren) - Holmes' rather TBD on and off girlfriend who is TBD.
 * Mycroft Holmes (voiced by Alan Tudyk) - Holmes' TBD older brother who is TBD.
 * Mrs. Hudson
 * Inspector Lestrade

Antagonists

 * Prof. James Moriarty (voiced by Tim Curry) - a maniac criminal mastermind who TBD.
 * Sebastian Moran (voiced by Corey Burton) - Moriarty's TBD henchman who TBD.