Sinestro is the former mentor of Hal Jordan and the arch-nemesis of the entire Green Lantern Corps.
He was considered at one point to be possibly the greatest Green Lantern of all time before his descent into evil. He would abuse his power as a Green Lantern to conquer and instill fear into others, and he was striped of his Power Ring and exiled by the Guardians of the Universe.
He then later wields a yellow Power Ring with similar powers of the Lantern Power Ring. His mission is to eliminate all Green Lanterns and even formed his own Sinestro Corps. He is one of the most dangerous and most powerful villains in the Universe.
Created by Foxwolf on Jul 25 2009
Special thanks to Jackson_H, Music Meister, UltimateCharm for additional sound clips.