Suggested by Lethal_Gecko
Hercules Vs the Hulk … again!
A duel between the Berserker from Fate/ Stay Night (Hercules, composite)and the Incredible Hulk from Marvel.
Battle takes place within the Roman Colosseum and they can not leave it.
Battle to the Death. (In the case of Hercules, he must be truly slain so that he disappears back into the Holy Grail).