Justice League
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The Justice League, or Justice League of America, is a group of superheroes appearing in American comic books published by DC Comics. The team first appeared in The Brave and the Bold #28. Wikipedia
Members: Batman, Superman, Wonder Woman, and more
Founders: Batman, List of Founders of the Justice League, Steve Trevor, and more
First villain: Starro
Base(s): The Hall; Watchtower; Satellite; Secret Sanctuary; Detroit Bunker; The Refuge; JLI Embassies
First appearance: The Brave and the Bold #28 (January 31st 1960)
Publisher: DC Comics