This is a follower mod including a character from the HBO TV series: A Game of Thrones. I made this follower with the creation kit, the required mods are:

http://www.nexusmods.com/skyrim/mods/30411/?
http://www.nexusmods.com/skyrim/mods/13722/?
http://www.nexusmods.com/skyrim/mods/2488/?
http://www.nexusmods.com/skyrim/mods/2488/? (Male File)

Optional:

http://www.nexusmods.com/skyrim/mods/27301/?

You will find the Kingslayer at the Four-Shields Tavern in Dragonbridge.