An intergalatic bounty hunter.
Gammeron was created by Christopher Priest.
Glenn Gammeron encounters J'onn J'onzz and the Justice League Task Force when he tries to collect a bounty on Despero, whose body was at the time under the control of L-Ron and a member of the JLTF. He and J'onn know each other and have a friendly, if adversarial, relationship. He succeeds in taking Despero to trial, but has a change of heart and helps L-Ron escape with the JLTF. They end up stranded in Skartaris for time before returning to Earth.