Several heroes split from the main Justice League over dissatisfaction with the League's association with the United Nations. These characters form their own Justice League, based out in Mount Thunder, Colorado. The team is led by Captain Atom and consists of Maxima, Blue Beetle (Ted Kord), Booster Gold, and Amazing-Man (Will Everett III). They were later joined by Firestorm (Ronald Raymond), Plastique, and the Wonder Twins (Zan and Jayna). Carol Ferris became the administrator of their Mount Thunder facility. The characters never referred to the team as "Extreme Justice" in the series; however, they were called that in an issue of "Justice League America".