Editing Kyle Rayner (section)

===Sinestro Corps War===
{{Main|Sinestro Corps War}}

[[Sinestro]] abducts Rayner from Oa through one of his new yellow power rings. At the [[Sinestro Corps]]' base on Qward, he reveals to Kyle that he was responsible for his mother's death and infected her with the sentient virus [[Despotellis]] to kill her in a plot to break Rayner's will so that he could serve as Parallax's new host. Sinestro also reveals that Ion is actually a benevolent energy entity, similar to Parallax, that thrives on willpower and that Rayner was unknowingly its current host.

The Sinestro Corps confront Kyle, who has his powers drained out of him by Sinestro himself and is immediately taken over by Parallax. Parallax then clothes itself in a new uniform, which appears as a combination of the Sinestro Corps' uniform, Kyle's original Green Lantern costume, and the armor Hal Jordan wore as Parallax. Parallax's possession also turns the hair on top of Kyle's head gray, just as it turned the hair on Hal Jordan's temples. Parallax returns to Qward with the Sinestro Corps and is inducted into their ranks, becoming one of the [[Anti-Monitor]]'s [[herald]]s.<ref>''Green Lantern: Sinestro Corps'' one-shot (August 2007)</ref>

In Kyle's body, Parallax captured [[Hal Jordan]], [[Guy Gardner (character)|Guy Gardner]], and [[John Stewart (character)|John Stewart]] and brought them to [[Qward]]. Before bringing them, Parallax made Hal relive the only time he ever experienced fear: when his father died. Parallax also elaborated that since invading Kyle's mind, he now has nearly infinite creativity to call upon in his deeds.<ref>''Green Lantern'' (vol. 4) #21 (July 2007)</ref> During the battle with the Green Lantern Corps, who arrive at Qward to rescue the captured Lanterns, Parallax murders [[Jack T. Chance]] and crushes his Power Ring before it can find a replacement.<ref>''Green Lantern'' (vol. 4) #22 (August 2007)</ref> During his fight with the Earth Green Lanterns, Parallax revealed that Kyle Rayner's "twisted desire" was to be the last Green Lantern again and thus "special". He is stopped from murdering Guy Gardner by the intervention of the surviving Lost Lanterns and the Ion entity. The Embodiment of Fear then led an advance group of the Sinestro Corps, readying to attack Coast City. It is also suggested by the [[Guardians of the Universe]] that Kyle is no longer destined to be Ion following his being taken over by Parallax.<ref>''Green Lantern'' (vol. 4) #23 (September 2007)</ref>

As seen in the one-shot ''Parallax'' (September 2007) Kyle was trapped within his own mind. He is able to witness all that Parallax says and does from a third-person perspective but is unable to stop it. Kyle's personality watches Parallax's actions from inside the prison that his own imagination has constructed: his mother's empty house. The only fixture in the house is an old painting of uncertain origin and authorship that had belonged to Kyle's mother. As Kyle watches Parallax battle Hal Jordan and the Lost Lanterns a manifestation of the fear entity comes to pay him a visit. In the realm of his imagination, Kyle is able to "transform" into Ion and engage the parasite in battle. After being blasted back by Parallax and losing his Ion form, Kyle forms a power ring, places it on his finger, and appears in his original costume. Although he puts up a valiant fight, Parallax is too much for him, and Kyle is defeated. Parallax taunts Kyle with his deepest fear: failing the people who depend on him, especially the women in his life. Many of the women in Kyle's life have died or come to harm because of their association with him, and this causes Kyle to struggle with feelings of guilt and responsibility. The latest to die was Kyle's mother, killed by the sentient virus Despotellis on the orders of Sinestro. It was the grief and guilt that this revelation caused Kyle that allowed the Parallax entity to possess him. Sneering, Parallax mocks Kyle's helplessness and turns to depart, but the enraged artist grabs a pencil and stabs the creature in the eye with it. Parallax, unfazed and unhurt, taunts Kyle once more with the hopelessness of his position and disappears. Left alone, Kyle is about to smash the painting in frustration when he notices his mother's signature in the bottom corner and realizes that she secretly painted it years ago. This deep and unexpected connection with his mother gives Kyle hope, the very thing he most needs to overcome his fear. With renewed faith in himself, Kyle walks into the painting and ends up in a field walking toward a bright, green star.<ref>''Tales of the Sinestro Corps Presents: Parallax'' (September 2007)</ref>