Its an undertale battle, just do what you would do in the game. Ever since I saw the metatton NEO fight on YouTube (I chickened out of genocide) after laughing, I was disappointed, sure it was funny, but it inspired this fight. I hope you enjoy. Please comment what I should improve, it really helps me improve. 2 Endings: Sparing: Apologize until he spares you Killing: Killing? 9.86% possible.