Ryut
The dead world of Sector 666 — where death built its battery.
Ryut is a corpse of a world. Eons ago, it was a living planet in Space Sector 666 — until the Manhunters, the Guardians' first police force, suffered their catastrophic malfunction and descended on the sector with a single directive: terminate all organic life. What they did to Ryut and its sister worlds became known as the Massacre of Sector 666. Five beings survived. They called themselves the Five Inversions, and their hatred would one day birth the Red Lanterns.
But Ryut's story didn't end with the massacre. It was just beginning. When the Anti-Monitor fell in the Sinestro Corps War, his corpse was hurled across space by Superboy-Prime — and it came to rest on Ryut. There, in the darkness, something found it. Nekron, the Lord of the Unliving, encased the Anti-Monitor's remains in a Black Central Power Battery. The dead world had a new purpose: to be the forge of the Black Lantern Corps.
During Blackest Night, black rings erupted from Ryut by the millions, seeking the dead across the universe. The planet itself seemed to breathe with necrotic power. When the combined Lantern Corps finally came to Ryut — Hal Jordan, Sinestro, Atrocitus, Larfleeze, Saint Walker, Indigo-1, Carol Ferris, and the Guardians Sayd and Ganthet — they found the Battery gone, moved to Coast City on Earth. But Ryut remains what it has always been: a monument to the Guardians' greatest failure, and death's foothold in the living universe.