Fan Casting Green Lantern "Knightmare" in Zack Snyder's Justice League Part 2

John Stewart was born in May 2 1990, who is in the U.S. Marine Corps, what he did not know was that since John was very young, the Guardians of the Universe had been keeping an eye him, believing he could be an invaluable member of the corps. They sent a Manhunter to the Ferris Air facility to test his worth. Without hesitation, John sprang into action to fight the Manhunter and his bravery earned him a Green Lantern Ring. He quickly mastered the ring and defeated the Manhunter. John was then brought to Oa, where he met the Guardians face-to-face, who lauded him for his desire for peace and his willingness to fight for it.