Old Man is an NPC who lives in the Settlement. He is the only survivor of the attack that occurred prior to the game's beginning and helps the player through the first Quests.
He stays in his house, which can be used by the player as shelter. It includes a Workbench, Fireplace, and a Garden Bed. The Bed here serves as the player's respawn point until they place their own.
His house is located at the top right of the settlement, and is the only house that is not completely destroyed when the player starts the game.