Hasten (The Girl Who Died)

Hasten was a Viking warrior.

While out leading a raid with a band of his warriors, including Nollarr, Hasten captured the Twelfth Doctor and Clara Oswald. The Doctor attempted to scare them away with the sonic sunglasses, but Hasten simply snapped them in half.

After a two day journey back to their village, Hasten 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, Hasten among them.

Despite Clara's warnings, he advanced toward the doors to "Valhalla" - actually an extracting room - and was disintegrated, his adrenaline and testosterone harvested by the Mire. (TV: The Girl Who Died)

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