König-Sombra

You were 1 year old, one day your mother decided to sit on the couch with you in her arms with her back to the stairs. You turned around and saw a shadow that stared at you, she had a shirt over her head. You thought she was friendly, so you started making little sounds like: "blup glup gah!" This made the shadow smile and he lifted his mask revealing sharp teeth, that made him raise his arms, Your mother looked at you and when she turned around she saw nothing