1) The appearance says human, not humanoid or Kryptonian, or .  Extremely minor problem.
2) I was assuming they died, but I can change that if you want to use the characters.  Why did the humans give up, though, if two Kryptonians were still alive to fight for them?  Did Darkseid give them Kryptonite poisoning or almost kill them with magic?  Did he wait until they were off-world to attack, then sterilize the world before they got back?
3) She's named "Jessica" throughout the power description.


Also, what's your take on the anti-life equation in the JLU show?  At the end, Lex Luthor and Darkseid both touch it and disappear.  Did it kill them?

I was thinking that in this universe it essentially wiped out life, and that they both learned to undo it, to make themselves immortal, as they could resurrect themselves if they die.  Darkseid also learned to use it to wipe out all life in an area, IE, on Earth.

The problem with that, though, is that the wiki says that in the comics it's a mathematical proof of the futility of life, but that doesn't exactly fit well with the show.

edit: 4) Also, they are genetic cousins, so kind of incestuous.  It's fine if you don't care, though.