Board Thread:Questions and Answers/@comment-36657572-20180824045103/@comment-29579350-20180904022725

Now that is a hard question.

I don't think that the ghosts in Undertale are in an afterlife, wouldn't they die if their HP went down to 0, becoming dust and losing their SOULS?

I think that the ghosts in Undertale were born ghosts, somewhere in the game I read something about Napstablook's fathers and that make me wonder if he had died or he is just a different type of monster.

Resumed: I think they born as ghosts nut they want to become corporeal. If they do so, then they can die. Forever.