Qward
The antimatter universe's dark mirror — home of the Weaponers and the Sinestro Corps.
In the antimatter universe, where everything runs in reverse, lies Qward — a world of jagged black rock and weaponized hate. Its people, the Qwardians (or Weaponers), forged the yellow power battery and the first yellow ring, the only weapon that could bypass the Green Lanterns' defenses.
Sinestro made Qward the staging ground for his Corps. From its forges came thousands of yellow rings, each seeking out a being capable of instilling great fear. The planet's entire culture revolves around a single export: fear, refined into weaponry. Every Sinestro Corps soldier trains in Qward's shadow — and learns that mercy is a foreign concept there.