Doll Boy is a giant hammer-throwing Daruma doll who appears in Wario Land 3. He resides inside the Volcano's Base guarding the grey treasure chest containing the Lead Overalls.
He sits atop three barrels and attacks by throwing hammers that turn Wario into Springy Wario, forcing him to replay the battle.
To defeat Doll Boy, Wario must strike the barrels when they flash. When all the barrels are gone, Doll Boy will glow green and cruise around the area, trying to hit Wario with his hammers. Jumping on his head will stun him, giving a chance for Wario to deliver the finishing blow.