I need to be inlightened about Black Numenoreans

[Silmiel of Imladris]

I tried researching them, but I didn't find too much so I decided to ask the experts. I need to know as much about them as possible for a fan fic I am writing. Any information would be awesome super fantastic. Thanks.

[Saraphim]

I believe the Black Numenoreans were the people of Numenor who were corrupted by Sauron's influence when he hald dominion over Ar-Pharazon, the king.
One in particular, the Mouth of Sauron, was a decendant of those, who had landed on Middle-Earth before the sinking of Numenor.

Hope this helps a bit!

[Gil-Galad]

Don't forget Fuinur and Herumor! famed leaders of the Haradrim during the Last Alliance...

[Bombadil]

This doesn't say much more than what's already posted, but it gives some more information on certain factors of the topic:

http://www.glyphweb.com/arda/

On left toolbar go to "Bs" and click "Black Numenoreans."