(I love this au!) Oh my god Mettaton's story is so sad, I love it? Also what happened to Monster Kid?
Monster Kid, like all the children in the Underground, were some of the first victims of the Hunger. They made far too easy prey, often for their parents. MK in particular was attacked by a swarm of Whimsun, as his family fled to the Ruins in hope of escaping the violence in the cities. Papyrus and Sans found him in the woods, being picked apart by the ravenous creatures. This event led directly to Papyrus’ only earned EXP, and the need for his self inflicted delusion.
Once Sans had pulled Papyrus away from the dusted remains of the Whimsun swarm and had put MK out of his misery, he helped Papyrus carry his dust back to Snowdin, where his ashes were spread around the Gyftmas tree in the center of town. Sometimes, if the wind blows just right, you can almost hear his laughter in the town’s central square.
Or perhaps it’s just the Hunger getting to you too.