Blackstar Universe

Publisher DC Comics
Info A graveyard universe, once home to a virtually perfected Earth prior to the events of Flashpoint as Earth-15 before being destroyed by the mad Superboy Prime. Now entirely barren, all that remains of this dimension is the mysterious Cosmic Grail, lost somewhere amidst the 52 universes of the Multiverse. The universe's reality was modified by Green Lantern Hal Jordan into one populated by heroes whose personality was opposite to their Prime Earth counterparts, after Controller Mu tried to use the Miracle Machine to alter the timeline of Prime Earth and erase the Green Lantern Corps from history

Connections to Earth-15

Nothing connected to Earth-15.