Hasten (The Girl Who Died)

Hasten was a Viking warrior.

While out on a journey with a band of his warriors, 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 trip back to their village, Hasten witnessed the Doctor claim that he was Odin, the Norse King of the Gods, only for another false Odin to appear in the sky and invite the village's best warriors to dine with him in Valhalla. A small group of Mire soldiers teleported down to Earth, and Hasten was one of the Vikings transported to their spaceship.

Despite Clara's warnings, he advanced toward the doors to "Valhalla", only to be 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.