Sir Deeter served as a squire to the Green Lantern, Okonoko. He was raised on a world within sector 1110 where the society mirrored medieval Europe, and Knights, princesses and dragons were commonplace. Like any loyal squire, Deeter idolized his master while at the same time dreamed of his own future glory as a member of the Green Lantern Corps. Although Deeter tended to his duties faithfully, he was drawn to the mysterious power ring. One night, Deeter’s curiosity finally overcame him and he snuck into his master’s chambers and took the Green Lantern’s ring. Deeter was unable to exercise much control over the ring. With great effort he used the ring to set off a green fireworks display over the night sky.