Villain Notebook for the Future is pretty fun My Hero Academia fic that's just gotten started. The writing prompt that inspired it is a pretty good synopsis:
He's basically a smaller scale version of Megamind.
Quote:I had an idea for an in character Villain Deku story.
Izuku's personality remains the same but instead of heroes he is a villain otaku who believes in the narrative convention that a hero is defined by their villains.
So he decides to provide the heroes with a better class of villain to help the heroes improve.
His crimes would be challenges to heroes that seem dangerous on the outside but they're always set up so that no one would actually get hurt.
Kind of like if the Riddler didn't actually want to hurt anyone.
He's basically a smaller scale version of Megamind.