Parallax is a fictional comic book supervillain in the DC Comics universe. Created by writer Ron Marz and artist Darryl Banks for Green Lantern vol. 3, #48, Parallax was originally devised as the new supervillain identity for former Green Lantern protagonist Hal Jordan. After further changes for the Hal Jordan character over the subsequent years, 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 villainous action. 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 yellow impurity that in the past rendered the rings useless against anything yellow. In 2009, Parallax was ranked as IGN's 92nd Greatest Comic Book Villain of All Time.