User blog:Anonymouspsych/Quick (probably stupid) question

so i don't know if you guys know marsian manhunter story (cause probably i don't). accourding to Justice League: A New Frontier he is the last species of green marsians on his planet. acoourdin to Justice League: crisis in two earths in the flash back he gave the presidents daughter about his past, he shows her that all his family and or raise were destroyed. now my question is how come miss marsian exist?

and with sister acourding to "Infiltrator" last scene when she meets Artemis.

how is that possible?