Suggested by Sonic Mimikyu is a pretty spooky Pokemon who doesn’t take prisoners. It will keep fighting until Pikachu has been destroyed. Mario has some experience with electric opponents, but that won’t be quite enough here. I’m afraid that he is simply outmatched. He can’t hope to keep up with Mimikyu’s speed and his power won’t mean much without being able to land a blow. I’m afraid that this is just one fight that the doctor can’t overcome. Mimikyu wins.