COCORON! Cocoron was a NES game made in the style of Mega Man with the ability to make Mega-Man so to speak. Choosing between upgrades such as a Boomerang, Parasols or simple Pencils were all upgradable weapons while within a stage. Different body types like Car, Tank and Boat made maneuvering through certain terrain easier. Different weights effect jumping and there's even more shit which you can go into, but I'll stop.
It's amazing game. If you have a NES or NES emulator, download this and enjoy.
Cheeta-Men 2, because.