Born from Martin Jordan, Captain Harold "Hal" Jordan a test pilot for ASAF was branded as the "most fearless and expensive" by his comrades. Following his father's footsteps after he died, Hal made sure to continue his father's legacy and was gifted indeed...
On a given mission, he was tasked to check a wreckage from a fallen starship and as he cradled the alien passenger, he said that he was Abin Sur. Before he died, the ring that he had was looking for someone that was "utterly honest and born without fear" and so Hal was given the ring and a lantern that transformed his life forever.
With this new power, he learned that the alien was a member of Green Lantern Corps formed by The Guardians in the planet Oa. Also, here the Central Battery is found charging every lantern in the cosmos. Now, he is to protect and serve Sector 2814 where Earth is also located.
A day came when Coast City was utterly destroyed by Doomsday, with this loss he begged The Guardians to reconstruct the city and revive all the lives lost, but to no avail his request was not granted. He went angry and insane killing his master Sinestro by breaking his neck at the same time killing almost everyone from the Corp.
From there, The Guardians of Oa knew that a long time enemy was controlling Hal and should be stopped. Also, this was part of a plan from Sinestro to lure Hal to free the creature and enter him in his vulnerable emotional state. At one point, the Sun Eater was about to destroy the Earth when Hal sacrificed himself to save his home planet.
He was resurrected as Spectre, the Spirit of Vengeance. The spirit's tasks was to separate his tainted soul from Parallax. With all the help of his friends and Kyle Ryner's effort of securing his body from the sun where he died, Hal had one more reason to live and to save the universe again. His will stronger and resolved, he broke free from Spectre and Parallax joining his spirit from his now renewed body.
From the battle in the moon, after seemingly killing Sinestro again and with the help of JLA and the Green Lantern Corps they were able to dispose their oldest and bitter enemy the Parallax.
Now, Hal Jordan is back renewing his ties with The Guardians, The Green Lantern Corps and JLA. The ray of hope again echoes in the universe and as the battle cry is heard once more...
"In blackest day in brightest night no evil shall escape my sight, let those who worship evil's might beware my power Green Lantern's light."