Qwardian soldier St'nlli quickly rose through the ranks. He was biologically altered by Qwardian mastermedics to hunt down and capture Green Lantern Hal Jordan. However, upon crossing over to the positive matter universe, St'nlli lost his memories and believed himself to be a human. Under the identity of 'Stanley', he joined the employ of long-time Green Lantern villain Goldface and played an instrumental part in getting Hal Jordan arrested for breaking and entering. Stanley's mistreatment at the hands of Goldface eventually caused him to recover his memories. After taking his revenge on Goldface, St'nlli resumed his original mission of hunting down Hal Jordan. After the Anti-Green Lantern Corps and their central power battery were destroyed, St'nlli was not heard from again.
