Underforce is an AU where Frisk keeps reseting the time line but because of the resets a large glowing crack appears over the hot lands and Alphys believes it to be a doorway to any other AU and there are a lot of other monsters that joined the royald guard to help Alphy to study that crack. But in this AU Asgore died and Frisk left the underground.

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.