First things 1st. It's just a patch that changes the sprites of the character. I ripped these sprites from Alien vs Predator (J) for NES, it was pretty hard to find them, I'm not sure how the bosses look like in the Japanese version. So back to the creation, there is no new movements, or fixes, or sound, or anything. Just some sprite exchanges and that's all. Before you start complaining about it I did this for my own entertainment.
video preview -
http://youtu.be/C1ByOmVadco (do not touch staub)
download -
http://www.broadlyhillmugen.webs.com