<P> In Justice League #24, Mera joins the team . In issue #34 Mera leaves the League . </P> <P> In the Dark Nights: Metal event series written by Scott Snyder and Greg Capullo, the league roster reverts to Superman, Batman, Wonder Woman, Green Lantern Hal Jordan, the Flash, Cyborg, and Aquaman . In the event the league fights against the Dark Nights with the assistance of Mr. Terrific, Hawkgirl and Doctor Fate . </P> <P> The comic's early success was indirectly responsible for the creation of the Fantastic Four . When Marvel - Timely owner Martin Goodman heard in 1961 how well DC's then - new book Justice League was selling, he told Stan Lee, his comics editor, to come up with a team of superheroes for Marvel . The result was Fantastic Four #1 by Lee and Jack Kirby, which debuted in November 1961 . </P> <P> Marvel also introduced a team of villains in 1971 based on the Justice League called Squadron Sinister which has appeared in print as well as Disney XD's Avengers Assemble animated series . The characters are analogous to Superman (Hyperion), Batman (Nighthawk), Wonder Woman (Power Princess), Green Lantern (Doctor Spectrum), and Flash (Speed Demon). </P>

Who came first the avengers or justice league
find me the text answering this question