Surtr

Surtr better known as Metal Beak was the husband of Nyra, the leader and King of the Pure Ones and the main antagonist of the 2010 film Legend of the Guardians: The Owls of Ga'Hoole.

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 is voiced by Joel Edgerton.

Before the film
Metal Beak was originally called Surtr and took part in the battle of the Ice Claws with the Pure Ones against the Guardians of Ga'Hoole. During the battle, Surtr was greatly disfigured by a Guardian named Lyze of Kiel, resulting in him wearing a metal mask to cover his scars and going under a new name; Metal Beak.

Legend of the Guardians: The Owls of Ga'Hoole
Some years later, Metal Beak and his wife Nyra and the rest of the Pure Ones, took over St. Aegolius Acadamy for Orphaned Owls (St. Aggie's for short) and would send out his minions to capture owlets in order to either convert them into Pure One soldiers or make them pickers to pick through pellets to find flecks to power his device to use against the Guardians. He had made an alliance with Allomere, a Guardian who had became a turnfeather for the Pure Ones as Metal Beak has promised him a portion of the owl kingdoms to rule as King if he helped them.

After being given a moonblinked Eglantine and another owlet, Allomere returned to the Great Ga'Hoole Tree and told the Guardians the Pure Ones plan, which made the Guardians decide to fight them. However this was part of Metal Beak's plan and when the Guardians arrived, the device was activated and the Guardians were pinned to the ground with it's power. However, Soren and the band arrive to save the Guardians (after Eglantine revealed to him that Kludd had moonblinked her and gave her to Allomere). Seeing the group, Metal Beak believed that they were Guardians, and felt betrayed by Allomere, who was meant to bring all the Guardians. Metal Beak ordered his bats to take Allomere away and kill him, saying that there's only room for one King.

Later in the battle, Metal Beak battled Lyze of Kiel (now known as Ezylryb), who despite his age was able to overpower his enemy, until Nyra's arrival. However, before they could kill Ezylryb, Soren arrives with a flaming branch to defeat Metal Beak to stop him destroying another owl's soul (after Kludd became a Pure One and battled him). The two owls battled, but Metal Beak was able to overpower the younger owl and leaped at Soren with talons out to kill him. Luckily, Soren was able to grab the branch and stabs Metal Beak through the heart, killing him. Following this, a shocked Nyra retreats with the remaining Pure Ones.

Near the end of the film, Kludd (who had survived falling into a forest fire during his battle with Soren) comes across Metal Beak's body and gazes down at his fallen mask, possibly taking it for himself.