The Mysterious Stranger

Mysterious Stranger is a perk in Fallout, Fallout 2, Fallout 3, Fallout: New Vegas and Fallout 4.

The Mysterious Stranger may appear in V.A.T.S.; he will then fire a single shot from his .44 Magnum to instantly deal a massive (but not always instant killing) amount of damage.

The jingle for the Mysterious Stranger is a similar version of the one heard in Fallout 3 although more high pitched. There are several variations of the Mysterious Stranger's appearance jingle and disappearance chime, which are randomized when he appears to assist the player character.

The Mysterious Stranger will have vanished from the map by the time your character exits V.A.T.S., meaning that it is impossible to interact with him, though some companions will comment on his brief appearance. Nick Valentine especially will react to an appearance of the Mysterious Stranger if he is the Sole Survivor's companion at the time, and has the Mysterious Stranger marked as an open case. A briefing of the case can be found under Nick's bed in his office.

Unlike the previous games, the Mysterious Stranger's face is mostly obscured by his worn fedora.

• The appearance rate is 10% for the first rank, 12% for the second rank, and 14% for the third rank. This does not change with higher Luck.
• Though the Mysterious Stranger is always depicted with a revolver, the death animation for the target will be based on the weapon the Sole Survivor is wielding, so they may be disintegrated if you have an equipped laser weapon or gooified if you have an equipped plasma weapon.
• Enemies will sometimes attempt (futilely) to attack the Mysterious Stranger during his brief appearances. This is most noticeable with feral ghouls, who will attempt to perform their flying tackle on him, only to end up passing through thin air and sprawling onto the ground.