Mercenary


 * Mercenary, a Fallout 3 Karma rank
 * Mercenary (achievement), a Fallout 3 achievement and trophy
 * Mercenary (Fallout 3), a Fallout 3 character protecting Moira and her wares in Craterside Supply
 * Mercenary (Fallout: New Vegas), guns-for-hire in Fallout: New Vegas