SOLVED. Superpowers - not YA - S tier supervillains are basically undefeatable, even by superheros. [s]

[Riplash]

I'm time-blind, but I'll guess I read this book in the 2010s?

I remember being disturbed by some things; I don't think it was quite grimdark, but it wasn't light either. Some people had powers, I think they were rated on a tier system and the S tier villains were basically unbeatable. One that I remember was a woman who was maybe black and white striped and her position in spacetime could be absolute. Meaning nothing could move her and nothing could harm her. She was also crazy and largely unpredictable. I feel like maybe she liked the MC for some reason.
I'm fairly confident that the story included cognitohazards as well.
I honestly can't remember anything about the MC other thank I'm pretty sure he/she got the s*it beat out of him/her on several occasions. No idea what his/her powers were.

Fair warning: This book could have been on a website somewhere and never published.

Solved: The book is called Worm and is a self-published web serial by John C. "Wildbow" McCrae
[I dug out my old kindle and just browsed through, opening anything I didn't immediately recognize until I found it.]