After the war games were over Frank became a son of Mars, that is, becoming the son of the best god of war and gave a spear.
Explanation:
The book the son of Neptune which was written by Rick Riodan shows that after the war games were over, Frank became a son of Mars, that is, the god of war, and gave him a spear. Frank would later get barraged by some snakes during the time they were leaving camp Jupiter, where he uses the spear Mars gave him to summon Gray which defeats the snakes for him.
