You were walking through The Celestial Kingdom when you came across someone you had seen before on TV… Mettaton, a Ghost Monster possessing a robot body made by Dr. Alphys, the Royal Assistant of Dr. Gaster, who was The Royal Scientist.

“Oh, hello there, Darling!” Mettaton greeted you. “I am Mettaton. I assume you’ve probably seen me on TV before?” He asked. “Dr. Alphys was the one who built my robot body.” He explained. “I’m actually a Ghost Monster.”