The Void Hero| Gaster x My hero academia

Gaster, the Royal Scientist created best of his invention. Core of Hotland. But there was an accident that ended his life. As a result of the crash at launch, he fell directly into the working part of the reactor, which split his body into atoms. When he opened his eyes, he saw a void, the end of which was not to be s...

Heroes of the Underground

(An Undertale and My Hero Academia crossover) Two brothers are transported through a digital rift that sends them to a world of heroes. With no way to get home, Sans and Papyrus must help and protect UA and its students from the League of Villains, now that's under new leadership.