Kyle Rayner  becomes the  Green Lantern  during this event. Worlds Collide 1994 The DC superheroes meet their  Milestone Comics  counterparts. Zero Hour 1994 Extant  and  Parallax  attempt to recreate the Multiverse; a new timeline emerges. Underworld Unleashed 1995 Neron  a demon from Hell offers the DC universe villains an "upgrade" in