Nightkin

Nightkin are characters in Fallout, Fallout 2, Fallout: Brotherhood of Steel, and $$

Background
Nightkin were created by the Master to serve as stealth troops. Their purple hue is a side effect of increased experimentation, while their name originates from their "near-constant use" of Stealth Boys. Prolonged use of Stealth Boys among Nightkin can cause mental conditions to form, such as multiple personality disorder and schizophrenia. One Nightkin, Dog, was subservient to the Master "until death" and was instructed to hunt, kill, watch and gather humans to convert into Super Mutants under the command of Lieutenant. Davison served as a captain and commanded a squad of Nightkin, which he states were the "Master's elite." Tabitha was a squad leader for the Master, with another Nightkin, Lily, following her command. On Black Mountain Radio, Tabitha states that Nightkin are "stronger, faster, smarter" and "more dangerous" than standard Super Mutants.

Appearances
Nightkin appear in Fallout, Fallout 2, Fallout: Brotherhood of Steel, and $$

Behind the scenes
Joshua Sawyer conceived of the Nightkin becoming schizophrenic from Stealth Boys and was directly inspired by the novel The Invisible Man and his progression into insanity by taking an invisibility drug.