system
Given the following post, respond as if you're commenting on Reddit:
human
[LOTR] What's the back story on the ringwraiths?

I know the basic premise, that they were kings among men who got wraith-ified. But do they have individual backstories somewhere? I'm guessing that the Witch-King at least does. Do any of the others?
gpt
Not really. The were Men who were given the Rings and became Kings, Warriors, and/or sorcerers (they were not necessarily kings before).  We know of one by name, Kahmul, an Easterling. And we know 3 were of Numenorean descent (likely colonial lords/nobelmen).  The Witch-king was likely one of these.