Someone is reborn as error sans. Except, the life they have to live is far from the one they expected.

What if someone died and was reborn in an undertale au as a siren? And not just any kind of siren, but a sans, a skeleton siren. They can change back between full skeleton form and back to their siren form. (Everything is different, different personalities etc, also includes all aus that I use, like a mixed au?

I died. how? well some crazy guy broke into my apartment and killed me. Now I'm reborn as a copy of the original geno except something is different... why do I have wings and red tear marks?

(You know how it goes, someone from our world Ends up dead and becomes dust sans..but somehow pregangt, different things, different personalities etc

To sum it up, someone is reborn as lamia killer sans! If you want to know more, continue reading!

After being trapped in a research facility for their entire life, babybones Cookie finally finds themself in the ocean, free to explore the place that should always have been home for him. Of course, growing up in a lab means they lack the skills to survive alone, so along the way, they make some unexpected friends, and even find themself a family.

(Cover By DarkBlueSoul_012) Error is tired of being the bad guy in everyone's story. But what if, maybe he didn't need to be anymore? Sirens, creatures you only hear about in fairytales. But Maybe they were real...just like the monsters in the mountain. Separate Accounts: xJdKx Twitchy SomeSpy

You are a mermaid living at a local reef going on a trip with your fish mates (classmates) until one day a huge storm blows you away from the reef knocking you out as you are stuck underneath a huge plywood from a shipwreck you call out desperately in hopes of finding anyone to help you and who you find shocks you....

Y/n's dad owns a research station in the middle of the ocean to research about all types of sea creatures but what happens when They come face to face with a great white shark. And little do they know that the shark is a skeleton.

What if..someone was transported as a orca mer bit was also killer sans? What if..they were also the reincarnation of killer who was a mer in that au but died a while back protecting one of the others? He doesn't get any of killers past memories...well mostly until he starts getting some flashbacks later on... (Different things, different personalities