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Hellboy is a 2004 American superhero film based on the Dark Horse Comics character of the same name. Ron Perlman plays the titular role of Hellboy, a half-demon, half-human superhero who works for the Bureau for Paranormal Research and Defense (B.P.R.D.). The film follows Hellboy as he investigates a series of supernatural occurrences and battles the evil sorcerer Rasputin.