Night Terror

 was a fiend that had a bounty put on him.

Background
Night Terror was fiend that caused trouble for the NCR, so much trouble that Dhatri put a bounty on Night Terror's head. Night Terror was killed by Little Buster for the reward.

Appearances
is only mentioned in Fallout: New Vegas.

Behind The Scenes
Night terror could be a reference to Night Rider from Mad Max.