Rhomann Sur (Earth-1638)

"The Corps is the maintainer of life and guardian of truth. The Corps is without fear. Without anger or corruption. The Corps has battled against the forces of chaos for a millennium. To serve is the ultimate honor. Knowledge is the sum of all reason and perception. Power is force prevailing over mass. Power without reason is chaos. Force without knowledge is destructive. The Lantern is the source."

- - Abin Sur

Rhomann Sur was a legendary member of the Green Lantern Corps known for his uncanny mental prowess, as well as unorthodox feelings towards the Corps' lack of emotional attachment. During a mission, Sur was attacked by Atrocitus and Sentinels, retreating to Earth in hopes of finding civilization to help him. Landing in Chicago, a dying Rhomann was discovered by test pilot Hal Jordan, whom he gave his power ring after he felt it had chosen Diggle as his worthy successor.