Mag Mar Tun Doh Weg

Mag Mar Tun Doh Weg is a character in the fourth season. He is a giant and a member of Mance Rayder's army. He is played by guest star Ian Whyte and only appears in "The Watchers on the Wall".

Background
Mag is a leader among the giants that joined the Free Folk army united by Mance Rayder.

Season 4
In the Battle of Castle Black, Mag approaches the Wall on the back of a mammoth. He rides up to the front gate and dismounts, at which point he and another giant take the mammoth and turn it around while several wildlings tie ropes to the it, tying the other end of the ropes to the gate's supports. While the mammoth tries to pull the gate open, men of the Night's Watch throw down flaming barrels of tar, which explode and drive the mammoth off. The other giant attempts to chase after it, but this brings him within the firing arc of a large ballista mounted atop the Wall. The massive bolt impales him from behind and he is killed.

Mag is enraged at the death of his fellow giant and bellows out a fearsome cry. His already incredible strength swelled with anger, Mag manages to lift the massive gate with his bare hands. He succeeds in passing underneath, though it slides closed again when he releases it. Mag then charges through the icy tunnel to the portcullis in the middle. Grenn, Donnel Hill, Cooper and three others are waiting for him and terrified, but Grenn rallies his men by leading them in reciting the oath of the Night's Watch, finishing just as Mag collides with the gate.

After the battle ends, Jon Snow and Samwell Tarly find Mag's body in the tunnel beneath the Wall, along with those of the men he fought, who successfully held the gate at the cost of their own lives.

In the books
In the A Song of Ice and Fire novels Mag Mar Tun Doh Weg is better known as Mag the Mighty. As giants in the novels are more ape-like, Mag the Mighty is described with a grey pelt streaked with white (somewhat like a silverback gorilla). He dies fighting Donal Noye, the blacksmith at Castle Black, in single combat. Noye's role defending the tunnel from Mag was given to Grenn in the TV series.