Well I'm not usually on the forums much hence why I mentioned Discord, I was only here because it was brought to my attention that somebody besides me was diving into the prototypes. I'll share my finds as I go along. One major thing to note that I've found in the same Art file as Metal Kai's back/Genesis Arm is that there is an Eye animation that goes unused. I've also found what I feel to be the prototype Final Boss intro. More like an animation during the Intro. Still haven't found the correct palette yet but Dolphman did what they could to get some sort of palette on it. There's more stuff like how Tails' Flight action code exists was worked on all the way up till 119 the latest before removal, among other things. Those Final Boss tests you posted earlier which proto were they in? I've modified the hell out of 0111 to try to get the final boss to load, If you 'complete' all levels in World Entrance you get forced to exit.