Luigi's Mansion 3: Luigi x Reader

You started walking to the entrance to your hotel room and gently opened it, there was that same laughter that came through the icy air. Once you opened the door into the hallway you were face to back with a round figure, a boo much larger in size and the purple aura forming around a jewel upon its head, like a crown. Suddenly the world came crashing down on you, the realization of the thing that stood before you made your legs weak... "King Boo."