Orange Lantern Corps

The Orange Lantern Corps is the name of an organization appearing in American comic books published by DC Comics.They first appeared in "Green Lantern" Vol. 4 #25 and were created by Geoff Johns and Philip Tan.
Fictional character biography.
The Orange Lantern Corps is a faction of the Emotional Spectrum that is associated with greed. Some millennia ago, the Guardians of the Universe fought the Orange Light's keeper Larfleeze which nearly destroyed both sides. They reached a peace treaty where the condition is that the Orange Light is to remain buried and that Okaara is to remain outside the Green Lantern Corps' jurisdiction.
The Controllers were searching for the Orange Light in order to create their own Corps.
Following the "Final Crisis" storyline, the Controllers have found Okaara.
The Controllers found the Orange Lantern Battery in a cave. When they tried to take it, they were slaughtered by the Orange Lantern Corps. Because of the Controllers' transgression, Larfleeze contacted the Guardians of the Universe telling them that the treaty is now null and void.
Larfleeze started recruiting different aliens to join his Orange Lantern Corps.
One Orange Lantern Corps devoured a Sinestro Corps member who was fleeing Green Lantern Corps member Stel. The Guardians of the Universe take some Green Lantern Corps to Okaara to make sure the Orange Lantern Battery causes no harm. They meet up with Green Lantern Corps member Gretti. When they confronted Larfleeze, he unleashed Orange Lantern versions of the defeated Controllers on them where they slaughtered Gretti. Both Guardians of the Universe and Manhunters slaughtered each other while Hal Jordan confronted Larfleeze who had his knowledge of Parallax. In addition, the Orange Lantern members present were all constructs. Larfleeze was defeated by Blue Lantern Corps' ring and not destroyed, he later went to the homeworld of the Blue Lantern Corps due to being told about it.
During the "Blackest Night" storyline, Larfleeze and his Orange Lanterns are closing in the Blue Lantern Power Battery when the Black Lantern Corps arrives and reanimate the bodies of those whose identities that Larfleeze has stolen. Larfleeze then flees from the Black Lantern Corps and his reanimated Orange Lanterns when he is saved by Atrocitus. Both of them quarrel over the Orange Lantern battery until Hal Jordan, Carol Ferris, Indigo-1, and Sinestro arrive to recruit them in a plot to destroy the Black Lantern Power Battery. Larfleeze was able to get Lex Luthor to wield the Orange Lantern Ring after he was saved from some Black Lanterns that raided his bunker. Though Larfleeze and Lex Luthor clashed due to their insatiable greed. Once Nekron is defeated, Lex Luthor loses his Orange Lantern abilities and is handed over to Earth's heroes by a disgusted Larfleeze. As part of an agreement, Sayd becomes Larfleeze's personal Guardian of the Universe.
During the "Brightest Day" storyline, Larfleeze sends his Orange Lanterns to steal items so that he can give them to Santa Claus. Hal Jordan's fight with Larfleeze is crashed by Hector Hammond who swallowed the Orange Lantern Power Battery.
During the "War of the Green Lanterns" storyline, Larfleeze's ring and the rings of the Corps members were controlled by Krona who used them against the Green Lantern Corps, but the ring returned to its master after Hal Jordan killed Krona.
In 2011, "The New 52" rebooted the DC Universe. Kyle Rayner investigated some Orange Lantern Rings and found the constructs maintained their personalities. Its construct member Glomulus was posing as one of the Orange Lantern Rings. When a Reach assassin fights Kyle Rayner on Earth, he is dispersed by the Reach assassin. Larfleeze regenerates Glomulus with his memories intact, only for Glomulus to show an independent spirit when he acts to protect Kyle from Larfleeze. The side-effect later caused the Orange Lantern Corps' entity Ophidian to roam the universe.
Membership.
Aside from the orange light user and those listed as "Former Members", there are not actually individuals who hold membership in the Orange Lantern Corps (in a conventional sense, there is no such Corps, only the orange light user himself/herself), but rather duplicates, referred to as "constructs" formed of orange light energy after the original persons were "consumed" and had their identities (later stated to be their very souls) "stolen". These construct Lanterns were designed by artist Philip Tan, and unlike the mostly-humanoid aliens who are members of the various Lantern Corps, most of them are bizarre and monstrous in shape. The graphic novel collection "Green Lantern: Agent Orange" includes several pages of Tan's original sketches for these creatures, including an unused concept for the Entity powering the Corps, a crocodile-like beast with a skeletal cage on its head. This Entity concept was later replaced by Ophidian (see below).
Entity.
The avarice entity is called Ophidian (Larfleeze refers to it as Ophidian the Tempter), and takes the form of a snake. It was born as the first being to eat more than it needed; it had been contained within Larfleeze's power battery and it spoke to Hal Jordan when he briefly gained control of the battery. Ophidian, along with the other emotional entities, are currently being hunted by Krona. The White Entity intones for Hal, Carol, and Sinestro to find the entities before it is too late. According to Atrocitus' divining ritual, Ophidian can be found in the upper midwestern United States. It is sought by Hector Hammond, who in turn is receiving orders from Krona himself. When Larfleeze refuses to release the entity from the power battery, Hammond simply swallows the whole battery and is transformed into the host for Ophidian.
It is implied that Ophidian doesn't like Larfleeze very much (possibly because he kept it trapped in his battery), and Larfleeze seems quite concerned about Ophidian's freedom. Ophidian also implies that it is going to "get even" with Larfleeze.
Ophidian would later join Krona, and with its disruptive powers, help the renegade Guardian of the Universe discover the location of the Butcher. Ophidian was last seen returning with Krona to Ryut where he will begin purging the universe of all emotionally unbalanced beings. Afterwards Ophidian is seen without its host, launching along with the other entities and Krona an attack on Oa, where it possessed a Guardian of the Universe. Ophidian was eventually free from Krona's control, after Hal Jordan defeated and killed the rogue Guardian. Ophidian roams at large in the Universe once again but it soon began suffering from a strange illness, later revealed to be the reservoir of the emotional spectrum was becoming exhausted. After Relic wiped out the Blue Lantern Corps and forcefully drained the green light from Oa's Central Power Battery and destroying the planet in the process, and while Ophidian represents the emotion of greed, the entity willingly sacrifices itself by passing into the Source Wall in order for the reservoir to be refilled.
The Book of Greed.
Mainly referred to as "The Book", it is a large tome created by the user of the orange light, in this case Larfleeze, sometime after the War of The Green Lanterns, just because Larfleeze's Avarice led him to desire a tome similar to the Book of Oa that was owned by the Guardians of the Universe. The tome should contain the exploits of the Orange Lanterns and Larfleeze even kidnapped a green-skinned alien by the name of Stargrave to be his chronicler, however, because he is completely consumed by greed, the book is almost blank because knowledge is something Larfleeze jealously guarded as a possession and was the reason why he did not reveal many secrets within the book despite the scribes directions is.
Orange Lantern Oath.
“What’s mine is mine
And mine and mine
And mine and mine and mine 
Not yours”
Other versions.
In the universe prior to the current one, groups managed to tap into the wellspring of power created by the Emotional Spectrum. In this universe those who tapped into the orange light were known as the Lightsmiths of the Orange Light of Gluttony is.