With his Ninth regeneration, The Doctor found a companion to travel with him who found a special place in his hearts; her name was Rose. He gave up one regeneration to save her life and, with his Tenth, she planned to stay with him forever. Then came the Daleks
800+ years ago, a man ran away; far, far away. Away from his people, from the responsibilities they wanted to heap upon him and from whatever destiny they saw for him that he didn’t want for himself. He stole a ship, a fantastic ship that allows him to travel not only through space, but through time.
The story goes that Sinestro was the greatest Green Lantern of all time; the Guardians on OA held him up as an example for all other Lanterns to follow and emulate. When the very first human from earth joined the corps, the Guardians decided that their greatest Lantern needed to be the one to train him, so they sent Sinestro to find and train Hal Jordan.