

As the colors drift closer to the outlying edges of the spectrum, it becomes increasingly difficult to control the associated emotional manifestation, potentially leading to the corruption of a power ring's wielder. Of these seven emotional types, willpower is constantly described as the most powerful, as it is represented by the color green - the balancing point of the spectrum. A being named Hattar would form the Grey Lantern Corps after harnessing his own apathy A being named Brannl harnessed his extreme happiness and joy to create the Gold Lantern Corps. These Lanterns are the only known group that does not make use of a power ring, choosing instead to use a staff to channel their power. A nomadic tribe comprised of some of the most violent and murderous beings in the Universe learned to wield the indigo light of compassion, forming the Indigo Lantern Corps. This Corps was designed solely for the purpose of using the blue light of hope to bolster the Green Lantern Corps, in anticipation of the coming War of Light. When the Guardian Ganthet was exiled by his peers for displaying emotion, he escaped to the planet Odym, where he formed the Blue Lantern Corps along with its first member, Saint Walker. One member, Larfleeze, began hoarded a collection of valuable items, foodstuffs, and succeeded in killing all other Orange Lanterns, later creating light and hard constructs, formed from the deaths of the beings he had murdered. On the distant planet of Okaara, the most greedy and selfish beings in the Universe created the Orange Lantern Corps of avarice. From the boiling depths of his rage, the Red Lantern Corps was born. The tormented Ryutian, Atrocitus, whose home planet of Ryut had been massacred, harbored a neverending hatred for the Guardians as a result, as well as against Sinestro, who had imprisoned Atrocitus in exile on the planet Ysmault. Their leader Aga'po would learn to harness the violet power of love, resulting in the creation of the Star Sapphire Corps.


Other Maltusian would separate from the Guardians and find the planet of Zamaron. This Corps wielded the yellow light of fear, and became a grave threat to the Green Lanterns due to the debilitating effect that fearful emotions can have on willpower. The former Green Lantern Sinestro was eventually disgraced and incarcerated after his attempt to subjugate his home planet of Korugar, but escaped to form the Sinestro Corps. Although the Green Lanterns remained the only Lantern Corps for untold years, six other Corps were eventually formed, each represented by another color of the Spectrum.

These rings allowed the Lanterns to generate hard-light constructs limited only by the user's will and imagination. New recruits to the Green Lanterns were chosen from individuals who exhibited a great capacity for overcoming fear, and wielded the green energy of willpower through the use of a power ring. For millennia, the Green Lanterns were tasked with maintaining order throughout the Universe, as an "intergalactic police force", gaining countless members throughout every Galaxy. A group of Immortal Maltusians, the Guardians of the Universe, were the first to create a lantern corps, wielding the immense power of will to create the Green Lanterns. The Lantern Corps are eleven known groups existing in the Universe, most of whom control a different emotion of the Emotional Spectrum as a source of power.
