The Green Lantern Corps were able to survive into the future and the latest person to get the ring to protect Space Sector 2814 is a young Earth child named Kai Ro which a Tibetan monk. Kai Ro enjoys mediation while in isolation from the world and it was assumed he was a student of the Master, the head monk who lived in a place located in the Himalayas called Nanda Parbat. Bruce Wayne visited Nanda Parbat in his youth to train in order to become a Gotham vigilante. However it is unknown to how Kai Ro got the ring, it was assumed it was passed down onto him from Kyle Rayner or John Stewart who both retired.
Despite Kai-Ro's age, he exhibits a calm personality and an advanced intellect. When Superman brought Batman (Terry McGinnis) into the Justice League Unlimited, some of the teammates were outraged by this and Kai Ro tried to calm everyone down.
Kai Ro continued to serve the Justice League Unlimited and the Green Lantern Corps, however in an alternate future set by Chronos, he was killed by an enhanced Dee-Dee.