Nikki finally goes to high school where she meets a meta girl named Katrina Spencer.

Year: 20XX Monsters were finally above ground. They had been trapped in Mt. Ebbot for years. Some of the monsters were just babies. I adopted two of those babies.... Undertale belongs to Toby Fox. Katy belongs to me.

A half Cat-Kryptonian half decepticon princess disguised as a CSI crime fighter adopts a monster child with the help of her boss and her Autobot husband. (I promise everything will be explained) Mandatory : All rights belong to marvel comics, DC comics, Hasbro ,whoever owns CSI Miami, and Toby Fox. (Or whoever created underfell) Katrina Tronis, however is mine. And I claim all rights to her, her powers , her backstory and her genealogy .