6 Crazy Problems Created By Crisis On Infinite Earths

6. What The Heck Is Up With Earth 2?

Earth 2 now looks completely different and is home to the JSA. How much of the Earth 2 history that we know from Season 2 of The Flash onward still happened? The Zoom arc was a pivotal point in the series, introducing several major characters while killing off others.

The Earth 2 we see at the end of Crisis presents the problem of looking nothing like the version of that reality we've come to know and being populated by the JSA. Can the events with Zoom still have happened in a world with the Justice Society and if they didn't happen, then who the hell killed Barry's dad?

We also have the question of the Earth 1 JSA introduced in Legends of Tomorrow. Did they still exist in Earth Prime's past or were they ported over to present day Earth 2? If that's the case, do the Legends just not remember Vixen? Maybe their timeline is screwy enough that none of this will effect them.