Indigo Lantern

The Indigo Lantern Corps(Tribe) was a mysterious group that had harnessed the power of the Indigo Light of Compassion from the Emotional Spectrum. Their creation was traced to the Green Lantern Abin Sur during his service to the Green Lantern Corps. At some point, he came to the planet Nok that was being besieged by aggressive explorers that had enslaved the native inhabitants. Amongst these was a being called Natromo who along with his people had uncovered a wellspring to the power of compassion within a cavern where it emerged from an unknown source from deep within the planet. They coated their weapons in the Indigo Light, and realized that their attackers struck by it suddenly felt remorse as well as regret over their actions. After their defeat, Abin Sur and Natromo decided to harness the Indigo Light of Compassion. This was because the Green Lantern had learnt of the Blackest Night Prophecy and intended to stop The Blackfrom destroying all life. To accomplish that, the two harnessed compassion to create the Indigo Lantern Power Ring. Once crafted, Abin Sur departed the world only to return with a criminal called Iroque who was forcibly given the Power Ring. The former criminal suddenly felt remorse over her actions and became a completely changed individual. Seeing the result, Abin Sur began collecting other criminals from across space and fitted them with these Power Rings thus forming the Indigo Tribe in order to fight The Blackest Night as had been prophecised.

Afterwards, Abin Sur departed Nok and left Natromo who was the only member of the tribe that was not a psychotic evil being. He was left in charge in keeping the Green Lantern's vision to come to pass. This included watching over the Indigo Lantern Central Power Battery located within the Forbidden Jungles. His intention was awaiting the return of Abin Sur as another prophecy spoke of a new evil following the Blackest Night with this madness emerging from the Guardians of the Universe. Their plan was to infect the Guardians with the light of compassion to end their actions. Unknown to Natromo, Abin Sur died during his service as a Green Lantern though the Indigo Tribe continued their operations under the direction of Iroque who became known as Indigo. The group remained undiscovered until the War of Light where their existence was known only to a select few that sought them. These included the corrupted Scar who wanted to destroy them and the Blue Lantern Corps that wanted them as allies. The members of this corps came across a battle between a Green Lantern and a Sinestro Corpsmenin Space Sector 3544. The Green Lantern had been gravely injured and the leader of the Indigo Tribe used her light of compassion to put him out of his misery by killing him due to the extent of his injuries. When the Sinestro Corpsmen attacked, Indigo used her light to absorb the yellow energy and fired it back by creating a monstrous construct that scared her opponent away.