In The Phantom Zone, Superman meets General Zod and Rogol Zaar who wants to kill every Kryptonian he meets since they destroyed his planet.
The new Chinese Superman, Red Son of Earth-30, and Sunshine Superman have all disappeared. Our favorite superhero, Kal-El, is next on the least.
Kid Flash is lost in time and dimensions due to the Flashpoint caused by The Flash. He is drifting into nothingness, but can see the mysteries of the universe.