Roy is one of those Koopa Kids who never seems like he is quite a match for Mario. That being said, he does give his all in every fight. I like to think that maybe he could land a hit on Mario, but the plumber is so athletic that it would definitely be a tough feat. Meanwhile Mario would be landing a ton of hits and that’s why he definitely has the advantage here by a long shot. He won’t even need a Power Star. Mario wins.