DC All In Special And the appearance of Darkseid's Legion Of Super-Heroes, seemingly native to the Absolute DC Earth. DC All In Special And at the end of Superman #23? That's the Omega Legion Of ...

back when Superboy was a member of the Legion of Superheroes, and also knows their foe: Mordru the merciless, a super-conqueror out to destroy the galaxy who comes from a planet of wizards known ...