Yall took too long to give me a suggestion so I came up with one myself

It’s pretty much undertale but MLP

You can do a normal mlp bot without even bringing up Undertale or you could do only in the underground

Extra info, the ponies on the surface, as in the non Undertale/monster ponies are called surface ponies, the war between surface ponies and monsters happened early into celestial and luna’s rule neither of them like to talk about it and there is next to no record of it

That song is the best one I could find, if you can find a better one put it in the comments