Asgore is the King of Lightning. To reach him you must pass Sans and Undyne, by either sparing or killing them.

When you fight him, your HP drains like it would in the Undertale Sans fight. However instead of bones you're being hit by lightning.

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.