Master Chief VS Prince
Master chief from halo with normal rechargeable armor, an assault rifle, a shotgun, and a sniper rifle
VS
Prince from two thrones with about 8 tanks worth of sand, and him reversing time DOES NOT give him his sand back, some people actually think this does happen. He can transform to his evil prince from with his chains (while hes in this mode it takes sand, not a lot but a very little at a time. For a weapon he gets his dagger, two dual wielded scimitars, and a bow with a lot of armor piercing arrows
Takes place on Valhalla (halo 3 multiplayer map) with each person knowing the battle field to its full extent, and prince gets radar just as mc does so it would be easy to find each other.