Thread:Tupka217/@comment-3567304-20200126135608/@comment-3567304-20200126151917

PRE-CRISIS: there are several green Martians alive; J'onn left Earth to create a Martian colony (Mars II); different power levels (more physical than mental); the green Martians invaded Earth, which made Aquaman dissolve the JLA and regroup it as the Justice League Detroit; the only difference between white and green Martians appears to be their colors.

POST-CRISIS: J'onn (and his brother Malefic) are the only survivors of the green race; J'onn has always been present at the JLA; Secret activities like Bronze Wraith; different aliens caused Aquaman to dissolve JLA. There are physical differences between white and green Martians, where whites are really monstrous creatures.