Krypton was a planet populated by a race of super-strong, scientifically advanced humanoids who resemble homo sapiens in every outward appearance. It was destroyed approximately in the early 1900s (according to Power Girl whose trip to Earth-Two took 60 years), but not before two independent scientists named Jor-L and Zor-L were able to create two different design spaceships that would send their children to safety on Earth-Two. These children would would grow up to become the Earth's super-heroes, Superman and Power Girl.
None as planet was destroyed
former residents included:
- Secret Origins (Volume 2) #1 established that the Earth-Two Krypton was located in the Negus star system. The actual Golden Age stories never specified any major details of that Krypton.
- The Adventures of Superman radio show had Krypton "situated on the other side of the Sun" from Earth, putting Krypton in the Sol system.
- There's currently only three known, living Earth-Two Kryptonians, left in existence. Kara Zor-L & her clone, Divine. Along with Bizarro Power Girl.