Hell Incarnate (Discontinued)

What if the roles were reversed?
What if Jason was Greek instead of Roman?
And Percy?
What would have happened if he was Roman and fought on Mount Tamalpais during the Titan War?

"There's a reason Perseus means Destroyer, Annabeth. In every war, driven by some instinct, the Big Three have each had one of their children participate. But there was one war, the Peloponnesian War, where Zeus and Hades had no children. So, it fell on the only living son of Poseidon to lead.
"There is a reason that three children of the trio were supposed to shoulder the burden of leadership together. It balances the scales; plays off the strengths of each. During the war, only Poseidon had given into his instinct and sired a son. The imbalance of power, the weight of that responsibility, forced him to become something else. Lysander, the son of Poseidon, expunged his mortal qualities in order to win the war and nearly became a god without the consent of the Olympians. After Apollo, acting under orders from Zeus, caused the death of this demigod, Lysander became known as Perses, the god of destruction.
"The Greeks had Jason, Thalia, and Nico. We Romans had only Percy."

This is the first book in "The Heroes of Olympus Rewritten" series.