Visitor

The  is a creature found in Appalachia in the year 2103.

Background
The Visitor's corpse is found in the bowels of The Deep. An adjacent oil lantern indicates the Vault Dwellers are not the first to discover it.

Biology
A Lovecraftian horror.

Gameplay attributes
The Visitor is technically a static object, and does not have any interaction with the player.

Appearances
The appear in Fallout 76, introduced in the Wastelanders update.