David "Dave" Legeno (12 October 1963 – 6 July 2014) was an English actor, boxer, and mixed martial artist. He was best known for his role as the werewolf Fenrir Greyback in three "Harry Potter" movies; "Harry Potter and the Half-Blood Prince" (2009), "Harry Potter and the Deathly Hallows – Part 1" (2010) and "Harry Potter and the Deathly Hallows – Part 2" (2011). He also had roles in "Batman Begins" (2005), "Stormbreaker" (2006) and "Snow White and the Huntsman" (2012).