Underfell (Gasters view)

Long ago I had two sons, they were nicer than anybody else in the underground! I had to teach them how to be tough, just to survive... One day I was experimenting with power! I made the core! Everything was going right, until I slipped and fell into my own creation! Eventually papyrus forgot about me, but Sans was holding onto his memories of me! I had to find my way back!!