 Korugar was also the home planet of the renegade former Green Lantern Sinestro, who used his Green Lantern powers to enslave his planet, and rule over them as a tyrant, unbeknownst to his Guardian superiors.Tui eventually leads a rebellion against Sinestro, and even testifies against him before the Guardians.Sinestro is imprisoned in the antimatter universe, on the planet Qward.