Kilowog of Bolovax Vik (Sector 647) is an alien who recruits and trains new members of the Green Lantern Corps. His most illustrious student is Hal Jordan. When Jordan was possessed by Parallax, Kilowog was one of the last Green Lanterns to try stop Jordan from destroying the central battery. He was killed by Jordan, but his spirit was summoned by a group of ex-Green Lanterns bent on avenging the destruction of the Corps at a Parallax-possessed Jordan's hands. He was subsequently restored to life by Kyle Rayner