Stray Demon is an optional boss you can fight when your return to the starting area of the game - the Undead Asylum - in Dark Souls. Defeating the Stray Demon allows you to get the Peculiar Doll, ...

You Can Break the Stray Demon’s Legs – In Dark Souls III, you can encounter a Stray Demon at the tall bridge accessed from the tower in Farron Swamp.

The Stray Demon is a hidden boss lurking inside the starting location of the game, right beneath the arena when you fight his equally ugly cousin, the Asylum Demon.