History: (Green Lantern / Sinestro Corps: Secret Files #1) - Breeon was a well respected Green Lantern who always kept his head under pressure. The Guardians were so impressed by his mind that they invited him into their citadel on a few occasions to discuss military strategy.

(Green Lantern IV #21) - Breeon and the Corps began picking up the pieces after the assault on Oa, and Salakk realized that the Sinestro Corps were picking off Lanterns across the universe, leaving over 50 dead.  The Lost Lanterns were sent to Qward to rescue Kyle Rayner from the Sinestro Corps, while the rest of the Lanterns were ordered by the Guardians to stay on Oa and prepare for another assault.  

(Green Lantern IV #25) - The Sinestro Corps War raged on Earth, and while Breeon, the GLC and an army of superheroes battled the Corps the Anti-Monitor prepared to unleash an anti-matter wave to destroy Earth. With Earth’s destruction, the entire 52 would fall, and he would once again rule all that was. The GLC ruptured the heart of Anti-Monitor’s Warworld, the Sinestro Corps central power battery, and created a shield around Warworld and the Monitor. The ensuing blast nearly destroyed the Anti-Monitor, and he was finished off by Superman-Prime, who betrayed him for having destroyed his home, Earth-Prime. GL Hal Jordan defeated Sinestro in personal combat, and the Sinestro Corps, lacking any leadership, fled Earth. The heroes rejoiced and began rebuilding the damage the Sinestro Corps did.

Breeon received a profile in Green Lantern / Sinestro Corps: Secret Files #1.