Is there a mod that adds more good people in the world to kill? Also are there any good quest mods for evil characters?

FNNCQ
A complete new slavery system where almost every NPC can be enslaved, follow the player, be placed anywhere (including DLC spaces) and do not get lost, become aggressive or lose equipment.
http://planetfallout.gamespy.com/mods/407/FNNCQ-a-fallout-3-slavery-overhaul

Yes my mod can be a lot of fun for evil players. Please use the nexus link:

http://www.fallout3nexus.com/downloads/file.php?id=9497

there is always the latest version. I update it regulary. I also made a quest extension for FNNCQ were you can play as a evil scientist. Sybills Secret:

http://www.fallout3nexus.com/downloads/file.php?id=12278

and there are also other very good evil karma mods on nexus for example Butcher Petes Meat made by LFox:

http://www.fallout3nexus.com/downloads/file.php?id=5939

F3Nexus was down at the time of posting.
I love you.
Kthx.