I wasn't sure where to introduce myself, so I thought I'd do it while explaining about my project.
I'm Tony, aka Combat King 0. I've been playing Streets of Rage and it's sequels since the mid-1990's. I've been tinkering with the ROMs with little success beyond renaming the enemies in SOR2, but a few weeks ago I discovered the Vinesauce Corruptor.
The only game I've tried it on so far is the original SOR, but I've messed up some of the text and turned Galsia into a terrifying, overpowered mess of tiles which can take up half the screen, or become completely invisible. Occasionally he'll use a series of jabs which can fully drain a health bar in a matter of seconds.
I'll keep going with the project and post some screen shots if anyone wants to see them.