Fan Casting Jason Grace in Riordanverse

Jason Grace was a Roman demigod, the son of Jupiter and the mortal Beryl Grace, as well as the younger brother of Thalia Grace. Jason was a praetor of the Twelfth Legion at Camp Jupiter until he gave his rank to Frank Zhang during The House of Hades as a field promotion; he was the former head counselor of Cabin One at Camp Half-Blood and the Pontifex Maximus at Camp Jupiter. He was the former boyfriend of Piper McLean. A couple of months after the giant war, he died at the hands of the third emperor, Caligula, when fighting aboard his yachts. Nico di Angelo subsequently has a feeling that Jason is somewhere better, although he isn't sure if Jason is in Elysium or if he chose rebirth.