Dark Sun: The Scorched World of Athas
The leader of a Thri-Kreen clutch that journeyed from the land of Ka-la-tak to the Tyr Region following the spirit smells of a life seed. He and his clutch-mates were successful in finding the seed, the last of an ancient Tree of Life living in an underground cavern.
His journey ended attempting to overcome the guardians of tree where he was slain in battle. The only survivor of the clutch, Chai-Tak, took the seed and vowed to honor Chao-ka’s work by protecting it.