In 2281, many are desperately searching for more Stealth Boys. When the Master's Super Mutant army was defeated in 2162, many began wandering the Wasteland or banded together into groups of varying sizes and with varying ends.

The Nightkin were an elite warrior caste in the Master's Super Mutant army and the apex of his version of Super Mutants.

And talking with No-bark Noonan He had to waited till 12:00 AM and he found out what was killing the Brahmin, a Super Mutant Nightkin. After The Courier was ask by Dusty McBride a Rancher and his Wife, Alice to find out who is killing their Brahmin.