The Green Lantern Corps had once had 3,600 members for years. The Guardians of the Universe had given the Green Lanterns the rings thus replacing the ManHunters, a long-time foe of the Green Lantern Corps. The Guardians of the Universe were the cosmic beings that were entrusted with keeping order in the cosmos. The Green Lantern ring allows a Green Lantern to do anything as long as his will is strong enough. The Guardians watched over the Green Lantern Corps as they kept the universe peaceful until one day.
Hal Jordan went crazy through the stress and problems of being Green Lantern of Sector 2814 or Earth. His hometown of Coast City who he had protected for many years was destroyed in what seemed like an instant by the uncaring Superman Cyborg and Mongul. All of the Green Lanterns were killed in the murderous rampage with the sole exceptions of Kilowog and John Stewart who went to Oa to help the Guardians stop Hal. The Guardians put all their energies into Ganthet, the last Guardian. The Guardians thus committed mass suicide. Ganthet frantically searched for a GL with a pure heart, fearlessness, and honesty. He literally picked out Kyle Rayner right off the street and gave him the ring. Kyle was a freelance artist who felt that he wasnít worthy for the emerald thrown. Ganthet lack of instruction and a power battery didnít help. Kyle subdued Hal. Hal became Parallax and fought Kyle many time until he surrendered his life thus killing the Sun-Eater and reliting the sun once more. Hal went out a hero once more. Later, he became the Spectre and his mentor is Abin Sur.
Only one Green Lantern had been stripped of the power of the ring, Sinestro. Sinestro was Hal Jordanís biggest rival for years. Sinestro found another source, the yellow ring, a gift from the Qwardians. The Qwardians were the complete opposite of the Guardians of the Universe. The Guardians longed for order while the Qwardians longed for chaos. The Qwardians saw that Sinestro longed for too much order and realized that too much order leads to too much chaos. This long war between the Qwardians and the Guardians of the Universe always lead to a war between Hal Jordan and Sinestro until that day.
During that murderous rampage, Hal as Parallax, killed his long time foe. Sinestro had faked death before, he, certainly, couldnít do it again. Then, he preceded to use his ring to wreak further chaos. Later, the ring fell into the hands of Obilivon. After that, the yellow ring had been thought to be destroyed. There had been three different Green Lantern Corps. Now, there was just Kyle Rayner and Jade. Unfortunately, the Qwardians had somehow gotten the yellow ring back. They gave the ring to Fatality, the lone survivor of Xanshi, a planet that had been destroyed by a headstrong decision of former Green Lantern John Stewart, now confined to a wheel chair. After Kyle beat Fatality, he tried to capture the ring, but it exploded as she tried to take it off. The Qwardians had gotten it back! Fatality was just a test of the yellow ringís capabilities for the Qwardians. They gave the ring to Alex Nero. Nero wreaked havoc all over the world conjuring up creatures to destroy. Nero beat and battered Sentinel (Alan Scott),Warrior (Guy Gardner), Jade, Kyle Rayner, and the entire JLA. Finally, Kyle and Nero endured one final battle in which Kyle was the victor. The Spectre (Hal Jordan) appeared to Kyle and gave him the option of living a normal life or accept the whole power of the Lantern with both the GL ring and the yellow ring. Kyle chose the latter. He became Ion, a new hero that can be at two places at once, and his powers are only limited by his will. One of Ionís first acts was to give Jade her natural powers back. She then gave her GL ring to Batman for safe keeping just in case. Then, Ganthet appeared to Kyle. "I knew you would choose this, Kyle. You were always someone for adventure. Let me see your old Green Lantern ring. I have a plan," he said. Kyle did not need a ring anymore as Ion. He took the yellow ring off and laid it down. Then, he gave the green ring to Ganthet. All of a sudden, the yellow ring exploded as it did on Fatalityís finger. Kyle stood in horror.