Orion has served two terms with the Justice League. He first demanded to join the League alongside his friend Lightray. They were accepted as Leaguers and stayed on until after the battle with the Evil Eye. Later, Orion and Big Barda were sent as agents of New Genesis to serve in the JLA. During his time in the League, Orion helped to defeat Starro when its actions put almost the entirety of North America to sleep and aided Green Lantern, Steel, Plastic Man, and Barda in capturing a White Martian that had regained its original memory. On one occasion, Orion and other Leaguers were abducted by the temporarily insane Adam Strange as part of a plot to defeat a telepathic race. Steel, John Henry Irons was forced to steal Orion's Mother Box and use it as a telepathic shield. Orion was enraged that his Mother Box was devoting to much energy and focus in keeping him calm to do anything else. Orion and Barda's central mission was to help mobilize Earth's heroes against the coming of the omnipotent, Old God tech-cosmic weapon known as Mageddon. Orion gave his Mother Box to Oracle for safe-keeping while he confronted Mageddon at full ferocity; channeling his inherited fury from Darkseid. Oracle used it to set up a telepathic, online network that could coordinate Earth's defending heroes as they fought to stop wars that Mageddon's mind controlling presence was inciting. Once Mageddon was defeated, Orion and Barda resigned from the Justice League.