Ronald Perlman (born April 13, 1950) is an American actor and voice actor. He played the role of Vincent on the television series Beauty and the Beast (1987 -- 1990), for which he won a Golden Globe Award, the comic book character Hellboy in both Hellboy (2004) and its sequel Hellboy II: The Golden Army (2008), and Clay Morrow on the television series Sons of Anarchy (2008 -- 2013).

Who is the actor that plays hell boy? OK. Let's think. My stream of consciousness:
The relevant information to answer the above question is: He played the role of Vincent on the television series Beauty and the Beast (1987 -- 1990), for which he won a Golden Globe Award, the comic book character Hellboy in both Hellboy (2004) and its sequel Hellboy II: The Golden Army (2008), and Clay Morrow on the television series Sons of Anarchy (2008 -- 2013). The answer is Ronald Perlman.