Suggested by Destroyer Mecha Sonic is very well known thanks to Super Mario Bros Z but in the actual games and comics he isn’t nearly as impressive. The gap between him and Metal Sonic is quite considerable but the real question is if this is still enough for him to pull out a win. I think it’ll definitely be close, Kirby has better travel speed but of course Mecha Sonic dominates in combat. I would need to see just a bit more out of him though so for now Kirby would be able to tank his hits long enough to counter. Kirby wins.