Mysterious Stranger

Mysterious Stranger is a Perk in Fallout, Fallout 2, Fallout 3, and Fallout: New Vegas.

Fallout and Fallout 2
With this Perk, there is a chance (30% + (2x Luck)) that your character will gain a temporary ally only in random encounters, details depend on the player's level.

Armor

 * 9-14: 50 HP (52 HP if stranger is female), Leather armor.
 * 15-18: 70 HP, Combat leather jacket.
 * 19-22: 90 HP, Metal armor.
 * 23-26: 110 HP, Combat armor.
 * 27-29: 130 HP, Power armor.

Weapon

 * 9-13: Hunting rifle or FN FAL.
 * 14-19: Assault rifle or Combat shotgun.
 * 20-26: Laser rifle or H&K CAWS.
 * 27-29: H&K G11.

Bugs

 * The Mysterious Stranger with the Hunting Rifle actually spawns Shotgun Shells as ammo instead of .223 FMJ. As such, the stranger only has 10 shots (which are spawned inside the weapon).

Fallout 3 and Fallout: New Vegas
With this Perk, you've gained your own personal guardian angel... armed with a fully loaded .44 Magnum. The Mysterious Stranger will appear occasionally in V.A.T.S. mode to lend a hand, with deadly efficiency.

His magnum deals exactly 9001 damage per shot and will kill any enemy in one hit, including Super Mutant Behemoths. Regardless, he will still empty six shots into a chosen target.

Bugs

 * The Stranger will sometimes be positioned unfavorably. This can include being stuck in a wall or such, being placed in water, being placed near a cliff, etc. This can result in his death (unconsciousness) or inability to effectively attack the enemy, or even in some cases to kill the player if the player is between the Stranger and his target.
 * During V.A.T.S., it isn't uncommon to hear the Mysterious Stranger music, even if he does not appear. This most likely happens at times when he would have appeared to finish off your enemy, but you killed the enemy instead. He may also have been affected by the bug above in some of these cases.
 * Sometimes when the Mysterious Stranger appears, he doesn't shoot. He'll just stand there, leaving you helpless. Another variant causes the Stranger to reload his magnum for the duration of his attack. If it jams, he may not attack at all.
 * While in the Operation: Anchorage simulation, the Mysterious Stranger will sometimes appear and then ragdoll, you will then receive a message that the Mysterious Stranger is unconscious. When V.A.T.S. ends, gameplay will resume as normal.
 * It is possible to injure the Mysterious Stranger by using weapons that deal area damage from grenades to large cannons such as the Tesla Cannon, Fat Man, or Experimental MIRV. It will just give captions such as "Mysterious Stranger right leg crippled" or "Mysterious Stranger is unconscious."
 * At times The Mysterious Stranger will aid you during V.A.T.S., but there will be a 5-10 second delay between killing the target and returning to normal gameplay. This can pose problems when fighting multiple enemies, as they will continue to attack both you and your companions during the delay. On occasion, this bug may cause normal play to not resume.

Behind the Scenes

 * The Mysterious Stranger perk was originally designed by Scott Bennie.
 * The Mysterious Stranger in Fallout 3 and Fallout: New Vegas wears a fedora and overcoat, like the protagonists of 1950s film noir.
 * The fact that he does 9001 damage per shot may be a reference to the meme "Over 9000".

Gallery
Tajemniczy Nieznajomy (postać) Таинственный незнакомец