I am on a Super Nintendo binge with this list, but hey it is what it is. Megaman X has one of the coolest, and most challenging final fights. Seeing as the final battle is three phases long. First you need to destroy Sigma's pet, which is a bit easy seeing as it only does four different attacks. Then you need to fight Sigma himself, which is really intense, because he has a beamsabre and shoots energy from his head! After all that, the battle body of Sigma is revealed and underwear needs to be changed. Although there is not a lot of movement or attacks going out. The final phase is still scary and intense because of how much damage you take per hit, a quarter of your total health! Megaman X took me a decade to beat, because of how hard that fight is.