Board Thread:Policies/@comment-13887191-20131206231713/@comment-220364-20131207223422

This may help... I think
 * Pre-Crisis on Infinate Earths multiverse
 * Earth-One with Superman and Supergirl. In this case Kara was a teen when Kal was sent from Krypton. When she was rocketed to Earth, suspended animation was involved. When she arrived, she was physically and emotionally younger than her cousin.
 * Earth-Two with Superman and Power Girl. IIRC, in this case Kara was close to Kal in age when they were sent to Earth. However, her rocket took longer to get there and it's suspended animation was flawed. So when she arrived she was physically in her early 20s and much younger than Kal.
 * Earth-Three with Ultraman without a cousin.
 * Earth-Prime with Superboy/Superman Prime also without a cousin.
 * Post-Crisis is a mess... Essentially you have New Earth with Superman, Power Girl, and Supergirl. (I'm sticking with the Kryptonians here...) Power Girl "survived" Crisis as a lone artifact of Earth-Two. The New Earth versions of Kal and Kara follow the Earth-One mold.
 * The 52 multiverse adds:
 * Earth-2 with Superman and Power Girl. Now actual background given.
 * Earth-3 with Ultraman and Ultragirl. Same situation as Earth-2.
 * New 52
 * Prime Earth with Superman and Supergirl. The Prime Earth versions of Kal and Kara follow the Earth-One mold.
 * Earth 2 with Superman and Power Girl. Again, we cuirrently lack a background of the order they left Krypton and the ages.
 * Earth 3 with Ultraman without a cousin as of yet.