In this animated feature, Hellboy and his team from the Bureau for Paranormal Research and Defense are called to investigate a haunted mansion with a dark history. The plot delves into themes of ancient curses and vampire lore, as the team uncovers the sinister past of a powerful vampire queen. The film features the voice talents of Ron Perlman, Selma Blair, and John Hurt, reprising their roles from the live-action Hellboy films. Directed by Tad Stones, this movie offers a blend of supernatural action and mystery. For those interested, it can be viewed for free on 123Movies / Movies123.