Suggested by Anon Yami Yugi has a lot of duel monsters at his disposal and he is a master of every game that he has ever tried out. In a sense you can think of combat as a game so he would be fairly good at that as well. Snails can be quite large and a few monster movies have used them, but even a giant snail won’t be a match for this duelist. Yami Yugi just has the overwhelming edge in a fight. Yami Yugi wins.