system
Given the following post, respond as if you're commenting on Reddit:
human
[Fallout] What is the difference between Nightkin and the Super Mutants?

Are the Nightkin just stronger? Is it just the fact that they like to use Stealth Boys? What was the main purpose of the Nightkin?
gpt
The stealth boys changes them, over time maybe even on atomic level.
The circle of steel was a Brotherhood project that tested stealth boys and learned it lead to hallucinations and paranoia overtime. Nightkin may suffer this all the time. The night kin were part of the master army, elites infact who were given stealth boys for tactical operations.