MLP/Skullgirls Crossover. Contains Skullgirls Spoilers.

A weapon lands in Ponyville. A living weapon. Bound and changed, she fought her world's gravest threat. Now she's free, for all the good it did her.
She is called Painwheel: a raging monster with the heart of a little girl. Will she find peace? Or more tragedy?

Ladies and Gentlemen(?), it's Showtime!

After a good day passed crusading, Scootaloo is napping before returning to her home when a rift suddenly opens before her. Out of the rift comes a strange ruby followed by a bipedal mustachioed being. Scootaloo quickly discovers that the ruby possesses great powers but before she knows it, she accidentally merges with it.

Now, she has to learn to control her new phenomenal powers, fight the mustachioed being who reveals to be a mad scientist who wants to use the power of the ruby to return home (and conquer Equestria on the way), and deal with the spirit of a sicko trapped in the ruby calling himself Infinite.

Perfect setting for the rising of a new, awesome super hero: Zero.

Crossover with Sonic the Hedgehog. Starts during season 4 of My Little Pony and after the events of Sonic Mania Plus.

I never asked for power or leadership. Royalty was a collar around my neck and a weight on my heart. A mask of superiority was born to keep them from realizing how our world was crumbling down to dust. No longer will my people live in the shadows. This plan has to work.

Art by Yula586 on Deviant art https://www.deviantart.com/yula568