Colin Moriarty

Moriarty is Megaton's crime boss and the owner of Moriarty's Saloon. He has a computer which contains valuable information on the game's main quest. To access the information, you can either pay Moriarty for it, get the info from a prostitute working for Moriarty, or convince Gob, the ghoul bartender, to tell you how to access his boss' computer.

Appearances
Moriarty appears only in Fallout 3.