Jericho (Fallout 3)

Jericho is a joinable NPC in Fallout 3. He can be found in the town of Megaton. He seems to be armed with a Chinese Assault Rifle. He also states that he has left the life of a merc in the Wasteland behind him, tired of the killing and voilence. You're required to be evil, and he charges 1000 caps for supplies to join you.