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.

If you talk to him some more he reveals that Mortiary hides his daily profits from his saloon in a footlocker at his bed, and that he wears the key around his neck.