Legion of Super-Heroes(Mainstream Universe, 2004-2009 (New Earth / Earth-Prime))

This version of The Legion of Super-Heroes was a group of super-powered teenagers active on New Earth in the 31st century. During the Infinite Crisis, the team's history was moved to Earth-Prime, however the Earth-Prime universe was destroyed when the new multiverse collapsed into a single universe. The new universe could not contain the energy of the former multiverse and it began replicating, ultimately forming fifty-two universes. One of those universes contained a rebirthed Earth-Prime, which restored the history of this Legion.