Hal Jordon was an airforce pilot on planet earth after his father brung him up to be a pilot. His father died in a fatal crash, traumatizing Hal but he chose to continue his fathers wishes. Many years later, a dying alien named Abin Sur, member of the Green Lantern Corps, crash-landed his ship in the Californian desert. Having selected a replacement officer for his position, the power ring chose Hal Jordan for his ability to overcome great fear. The ring and its abilities were explained to him, and he inherited the mantle of Green Lantern. Acting as a galactic police officer, it was his job to serve and protect all life in Sector 2814. He would soon learn that there were another 3599 Green Lanterns across the universe, all monitored and empowered by mystical creatures called the Guardians. Hal received training from some of the best the Corps had to offer, including drill sergeant Kilowog, and his mentor Sinestro. During his training, Hal learned that Sinestro has been subjugating his home planet, Korugar, through fear, using his ring. After Hal reported these acts to the Guardians and fellow Corps members, he battled Sinestro, and emerged victorious.
Hal returned to Planet Earth as the guardian of its sector to find that two other Lantern's were also chosen, John Stewart and Guy Gardener. When the Appellexians invaded, Hal fought to protect the planet alongside several other heroes including John Stewart. With this the heroes realized they would be stronger as a team and ecied to form the Justice League.