Hellboy (also entitled Dark Horse's Hellboy) is an 2020 adult oriented American TV series being created by Bruce Timm and is based on the Dark Horse Comics character of the same name airing on Netflix.
A half demon is placed in an organization with the purpose of hunting down the supernatural and keeping the balance between humanity and the non-human.
- Hellboy (voiced by Travis Willingham) - a half-demon who is a member of the B.R.P.D. being out to hunt down the supernatural.
- Trevor Bruttenholm (voiced by Ron Perlman) - Hellboy's serious adoptive father and mentor who is also the head of the B.R.P.D.
- Abe Sapien (voiced by TBD) - TBD
- Liz Sherman (voiced by Laura Bailey) - TBD
- Johann Krauss (voiced by John DiMaggio) - TBD
- Kate Corrigan (voiced by Tara Strong) - TBD
- The Lobster "Johnson" (voiced by Nolan North) - TBD
- Grigori Rasputin (voiced by Jeffrey Combs) - a Russian warlock who TBD.
- Karl Ruprecht Kronen (voiced by TBD) - TBD
- Ilsa Haupstein (voiced by Grey Griffin) - TBD
- Leopold Kurtz (voiced by TBD) - TBD
- Landis Pope/Black Flame (2) (voiced by Troy Baker) - TBD
- Herman von Klempt (voiced by Mark Hamill) - a German mad scientist who is obsessed with the idea of human evolution.
- Hecate (voiced by TBD) - TBD
- Vladimir Giurescu (voiced by Sam Witwer) - a vampire who sold his soul to Hecate, serving as her own personal enforcer.
- Nuada (voiced by TBD) - TBD
- Jeremiah Witkins/The Crooked Man (voiced by Jason Isaacs) - a creepy and offputting man who is in charge of all witches and is mentally insane.
- Effie Kolb (voiced by TBD) - TBD
- Koshchei (voiced by TBD) - TBD
- Raimund Diestel/Black Flame (1) (voiced by TBD) - TBD
- Kamala (voiced by TBD) - TBD
- Timm confirmed he isn't planning to have Nimue or the Ogdru Jahad to physically appear. The reasons is for Nimue it is so it would be different from the 2019 and why to the Ogdru Jahad since he believes immediately adding giant demon creatures would be overkill. Despite that the Ogdru Jahad are still mentioned and are actually motivations for some villains.
- Timm added Nuada as a friendly nod to the Guillermo Del Toro Hellboy films.