The origin of Super Villains: Parallax

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https://en.wikipedia.org/wiki/Parallax_(comics)

Created by writer Ron Marz and artist Darryl Banks for Green Lantern vol. 3 #48 (January 1994), Parallax was originally devised as the new supervillain identity for then-former Green Lantern protagonist Hal Jordan. After further changes for the Hal Jordan character over the subsequent years (sacrificing his life in order to reignite Earth's Sun in the 1996 crossover storyline "The Final Night", and Jordan's soul subsequently becoming the newest host of the Spectre in the 1999 miniseries Day of Judgment), 2004's Green Lantern: Rebirth once again cast Jordan as a heroic Green Lantern and explained Parallax as an ancient entity embodying the yellow light of fear which possessed Jordan and drove him to his villainous actions. Parallax was revealed to have been once imprisoned within the Central Power Battery on the planet Oa, from which all Green Lanterns derive their power, and was the reason for the necessary impurity that in the past rendered the rings useless against anything colored yellow.

In 2009, Parallax was ranked as IGN's 92nd Greatest Comic Book Villain of All Time.[1]

In 1994, in an effort to generate interest in its Green Lantern comics, DC replaced Hal Jordan, who had been the primary Green Lantern since the late 1950s, with the character Kyle Rayner, and eliminated the Green Lantern Corps which had served as supporting characters in the series. This was done in the story "Emerald Twilight", beginning in Green Lantern vol. 3 #48 (Jan. 1994). Following the complete destruction of his home town Coast City by the villain Mongul, Hal Jordan descends into madness, destroying the Green Lantern Corps, killing his friend Kilowog and all of the Guardians, except for Ganthet. After this, Jordan assumed the name Parallax and became a supervillain. As detailed in the crossover Zero Hour: Crisis in Time, Parallax attempted to rewrite history in order to stop the destruction of Coast City by using chronal energy, pulled from the universe by the combined power of the rings of the Green Lanterns he had killed. While Kyle Rayner became the primary Green Lantern of Earth for the next decade, Hal Jordan terrorized the DC universe as the villain Parallax and attempted to make the Cyborg Superman pay for the destruction of Coast City.

Hal eventually sacrificed his life to reignite Earth's sun after it was nearly completely eaten. His soul not at peace, Hal then became the new Spectre to seek redemption for what he did as Parallax. The 2004 miniseries Green Lantern: Rebirth, written by Geoff Johns and penciled by Ethan Van Sciver, revealed that Parallax was actually a parasitic entity dating back to the dawn of time and born from the yellow of the emotional spectrum. The parasite was the sentient embodiment of fear, traveling from world to world and causing entire civilizations to destroy themselves out of paranoia.

The Guardians of the Universe imprisoned Parallax within the Central Power Battery on Oa using fear's opposite energy, willpower, along with the aid of one of the fear's counterparts, Ion. Parallax had lain dormant for billions of years, its true nature hidden by the Guardians to prevent anyone from trying to free it. Being yellow in color, Parallax eventually came to be referred to as simply "the yellow impurity", a flaw, whose nature was kept secret from the Corps, that made their rings useless against the color yellow: Parallax weakened its power over the corresponding spectrum; hence, only someone with the willpower to overcome great fear could master the power ring. Thus, when recruiting new Green Lanterns, the Guardians were careful to look for recruits who could do this. When the renegade Sinestro was later imprisoned in the Power Battery himself, his Qwardian yellow power ring tapped into Parallax's power and awakened it.

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