Stone face is the boss of the Temple. It is a large stone face that attempts to stop Young at the end of the dungeon.
The boss will have orbs of energy orbiting it, and will fly at the walls and bounce around. After it does this, it will set up a room-wide beam that to try and damage Young, however the dust Stone Face kicked up can be used as a shield from the beam. After enough broom strikes, the boss will fall and cryptically announce it will always be watching Young.