Alternate reality (Green Lantern and the Legion of Super-Heroes)

In an alternate reality, a version of history existed where the galaxy was populated by powerful races and cultures. This separate universe had organizations that included the Green Lantern Corps and the Legion of Super-Heroes.


 * The DC Comics universe encompasses many parallel versions in and of itself.

Legion of Super-Heroes
When Q found himself trapped in this universe by Vandar, he reached out to the reality of the Federation and caused a crossover, bringing James T. Kirk and a Starfleet landing party and the Legion of Super-Heroes to a distorted reality where Q's power had changed history. The two teams observed that the two realities had been crossed, resembling a version of the mirror universe that merged the history of their two alternate realities.