Laira was born on the planet Jayd in space sector 112. She was trained by her father Kentor Omoto to take over his role as a soldier of the Guardians of the Universe as Green Lantern of her sector. Her training was also one strict with tradition and honor. During her training she became exceptionally adept at her native martial arts. Throughout his time with his daughter he never hid the fact that the ruling council of his planet were not doing things the way he would, he saw their rule as weak and disreputable. After the disappearance of her father during the Crisis on Infinite Earths and the proclamation by the Guardians that he was dead, she was considered for the post of ring bearer and Green Lantern of her sector. Her instructor turned out to be Ke'Haan of Varva, Kilowog's second in command. Most would have thought her doomed to fail as KE'Haan was renowned for his tough as nails training. More green lantern recruits flunked out or quit under him than anyone else. Eager to please and finding a kindred spirit of honor within her teacher she became his prized pupil.
Green Lantern Corps
To complete her training she was sent to the city of X'ol on her home planet. Her mission was to put an end to one who had become known as the 'Golden Dragon'. When she used her formidable skill to infiltrate his Castle, she made a startling discovery. Upon coming face to face with the villain, he was revealed to be her previously thought dead father, Kentor Omoto. Discovering that her father had become a tyrant in X'ol, she was shocked and hesitated to attack him. He explained to her his return from the crisis and to his home planet, where the years of sitting idly by had finally broken him. He was disgusted by the behavior of the people of X'ol and had crossed the same ethical line as Sinestro, using his ring to influence the people's behavior as well as that of the ruling council. When the Guardians discovered his actions, he was charged with political interference and was stripped of his power ring and returned to Jayd. Once he was back home, the ruling council exiled him. Having lost everything, he created the identity of the Golden Dragon so that he could remake X'ol in his image. Her father pled with her to forget the Guardians and the things he had taught her about honor. Realizing her father endangered not just X'ol but all of Jayd she engaged him in battle and through her skills, coupled with the teachings of her mentor Ke'haan, she bested the fallen Lantern. Omoto, defeated by his daughter, asked her to kill him, as honor demanded his blood for what he had done. She however refused and he instead committed Hara Kiri.
Emerald Twilight and Beyond
When word that Hal Jordan had gone rogue reached the guardians on Oa, they quickly sent word to their fiercest warriors. Laira and her mentor, Ke'Haan, engaged Hal Jordan but fell to his increased power and near psychotic rage. She and Ke'Haan were both stripped of their power rings and left for dead. She was later discovered by a reformed Hal Jordan and Guy Gardner to be held captive by the Manhunters, along with the other "Lost Lanterns," including Kreon, and Tomar-Tu, who had recently escaped to kill Jordan in revenge for his rampage. She, her mentor, and the others, with the help of Jordan and Gardner, put an end to the Manhunter planet of Biot and returned to Oa where she resumed her duties as Green Lantern of her sector.
During the Sinestro Corps war, Laira and the Lost Lanterns came to Hal Jordan's aid on Qward. the group then split up, with Laira, Ke'Haan and Boodikka searching for Ion, and Hal, Graf Toren, and Tomar-Tu looking for John Stewart and Guy Gardner. Laira's group would then run into the Anti-Monitor, who slaughtered Ke'Haan, but they were able to recover Ion and return to Oa. After lethal force has been authorized by the Guardians, Laira killed as many Sinestro Corpsmen for the death of Ke'haan.
Red Lantern Corps
After preventing the invasion of Coast City by the Sinestro Corps, Laira visited the Crypt of the Green Lanterns to mourn Ke'Haan's death. Honnu reveals to Boodikka that the two had been attracted for some time, but that Ke'Haan had refused her due to the fact that he had a family on his home planet. Laira and the Lost Lanterns set out to his homeworld to deliver news of his death, only to find that his family has been murdered by Sinestro Corps member Amon Sur. Enraged by this act, Laira ignored Sur's requests that he be taken into custody (to which he had willingly submitted), and the Lantern murdered him. Afterwards, Laira was held in custody on Oa, while her fellow Lanterns who were with her at Amon Sur's death all testified that she murdered him. After hearing that, Laira defended her actions and incinerated Amon Sur's corpse, present on the room, preventing any chance of resurrection for the killer. Afterwards, she was taken into custody by the Alpha Lanterns. After being held she was then sentenced in a trial by her former fellow Lost Lantern turned Alpha Lantern, Boodikka. She was expelled from the Green Lantern Corps and while on route to her homeworld of Jayd with Honnu, the ship was damaged by a Red Lantern Ring and she became one of the first members of the Red Lantern Corps.
Reduced to an almost animalistic state, Laira participated in the Red Lanterns attack on the Green Lanterns escorting Sinestro to his execution on Korugar, infecting Hal Jordan and John Stewart with her rage. On Ysmault, Laira made a blind run for Sinestro, and was thrown aside by Atrocitus. During Hal Jordan and the Blue Lanterns Corps' attempt to rescue Sinestro, she attacked Jordan, who tried to get through to her, vowing not to see her lost again. Laira was able to see past her rage, and regained some control, asking Jordan for help—only to be cut down by Sinestro, who mockingly noted that Jordan failed his promise. In a rage, Jordan tried to kill Sinestro—summoning forth Laira's former ring, which attached itself to Jordan. During The Blackest Night, Black Lantern Power Rings emerged with several travelling to Ysmault where they resurrected the Five Inversions as well as Laira thus turning them into members of the undead Black Lantern Corps.
Green Lantern: Emerald Knights
She participates during the main storyline as she battles against Krona. As the Green Lanterns are waiting for the start of the battle; Hal tells a sub plot about Laira to Arisia, a rookie who Hal is doing her rookie orientation. Later, Laira rescues Hal Jordan and Arisia from the attack of the shadow shield that is protecting Krona during his raising from the Sun.
In this sub-plot into the main story, Laira responds to an attack to her home planet. Her people is losing the battle. The Green Lanter for that sector arrives to help them but he dies during the scuffle. As a result, the ring choose her to carry on as a new Green Lantern. Her first instinct calls for help from the other green lanterns. As a result her home is safe from the invasion after reinforments arrived. However, her father is really disappointed that she asked for help from the Green Lanterns. She did not let him defend his people or die trying. She left to begin her training. In her first mission alone, she had to return as mediator because her people were responsible for the massacre of their remaining enemies.
As she arrived, her Mother in law battle her but she manages to break her armor to defeat her. Laira advances to the palace where her brother is waiting for her to face her. He has the the ability to make himself invisible. He comments about his abilities to hide and points out her inability to find him in the past when they were kids. They also discuss why he is on his father's crusade and from his point of view she betrayed her family.