Metal Beak (originally known as Surtr) is the main antagonist of the 2010 computer-animated Warner Bros. film, Legend of the Guardians: The Owls of Ga'Hoole. He is the husband of Nyra, and the leader of the Pure Ones.
He is based on Metal Beak from the Guardians of Ga'Hoole books. However, unlike the book's Metal Beak, who was a Barn Owl and whose real name was Kludd, the older brother of Soren (the books' and film's protagonist), this version of Metal Beak is a Greater Sooty Owl and is unrelated to Soren. Kludd appears in the film, but as a separate character, instead serving as a Pure One soldier rather than the leader.
He was voiced by Joel Edgerton.