Genma has the powerful Duel Sieger at his disposal so he’s definitely a threat to be contended with. He has faced off against many powerful threats and come out on top, but never has he faced a foe as powerful as Rokuro. Rokuro is one of the Twin Star Exorcists and his speed/power are on a whole other dimension compared to most fighters. I think it’s safe to say that he could down Duel Sieger in a few short blows and his speed would also allow him to dodge any counters. This match is as good as over. Rokuro wins.
Suggested by Sonic Genma is one of those rare duelists who may not have appeared a lot after the first series but still managed to keep up with the others when it comes to raw power. This is thanks in large part to the fact that his Duel Sieger is incredibly powerful and ferocious. To date his monster is still one of the hardest to destroy. Noboru may have a pretty solid array of cards at his disposal but no home run hitters are to be found with him. His cards can overwhelm a stronger monster with sheer numbers but Genma also has other monsters which will prevent such a victory from happening. Genma Todoroki wins.
Suggested by Sonic Kemura is one of those characters who was never going to develop into a fan favorite. It just wasn’t going to happen because there isn’t really anything likable about him. He was written out of the show pretty quickly but got a few duels before then. One such battle was against Genma and I just don’t think Kemura should last all that long against him. Genma’s cards are just better than Kemura’s and that’s all you need to know. Genma wins.
Suggested by Sonic Silver Dragon Adelaide has a pretty cool design and isn’t afraid to get up close and personal. That being said, I don’t think he will be able to handle Genma. Genma has his iconic Duel Sieger which is a monster so large and vicious that it can go toe to toe against just about any monster in the game. Genma has other monsters as well which will help him press his advantage. As strong as Adelaide is, he can’t hope to stop an army of monsters. He is simply outmatched by their combined efforts. Genma wins.