Kilowog

Kilowog is a fictional character and superhero from DC comics, and is one of the main characters of the Green Lantern comic book series. He is a Bolovaxian member of the Green Lantern Corps of the Sector 674, who held from home planet as a brilliant geneticist. He is is a drill instructor, responsible for teaching and mentoring newly-recruited Green Lanterns in Oa. He is also a friend and ally of Hal Jordan, Kyle Rayner, John Stewart, and Guy Gardner, and has been a member of the Justice League International.

He was created by Joe Staton and Steve Englehart, and first appeared in Green Lantern Corps #201 in June of 1986.

Idea Wiki media

 * Kilowog is a NPC in Marvel/DC Heroes Unite!, voiced by Dave Boat.
 * Kilowog appears in Justice League: Battle for the Multiverse, voiced by Travis Willingham.
 * Kilowog appears in DC: Unlimited Rebirth, voiced by Fred Tatasciore.
 * Kilowog makes a cameo appearance in DC vs. Sega. He appears in Sonic the Hedgehog's Arcade ending among the Green Lanterns who welcome Sonic to the Corps.