Nollarr (The Girl Who Died)

Nollarr was a Viking warrior.

While out raiding with the other warriors of his village, including Hasten, Nollarr came across and captured the Twelfth Doctor and Clara Oswald.

After a two day journey back to their village, Nollarr and the others witnessed the Doctor's attempt to convince the villagers that he was Odin, the Norse King of the Gods. Shortly afterwards, another false Odin appeared as a projection in the sky, and invited the village's best warriors to dine with him in Valhalla. In reality, this was a Mire general looking for warriors to slaughter for sustenance; a group of Mire soldiers teleported the warriors of the villlage away from Earth to their spaceship, Nollarr among them.

On board the spaceship, Nollarr was forced into a chamber where he was disintegrated, his adrenaline and testosterone harvested by the Mire. (TV: The Girl Who Died)

Behind the scenes
Nollarr was not identified on screen, only in the credits.