I had an AU idea [SPOILERS]

This au has probably already been though of but meh

in this AU the dreemurr family doesn't exist Undyne is the queen of the underground who has to slaughter all humans who come down to smash the barrier

Flowey is not a flower but a fish named "Floundy the Flounder" and instead of floundy being [asriel] (#spoiler) they are undyne's long lost sister named.....I didn't think of a name... "Elli"?

Undynes parents died which caused "elli" to attempt suicide but turns into floundy instead and everyone thinks "elli" is dead

Undyne locked up the castle after all of her family members being dead sans and papyrus are the same alphys is the same monster kid is the boss in waterfall

the ruins are just a big dirt tunnel because no one has ever been in there

I may edit the post adding onto this but tell me what you think