Crisis on Infinite Earthswill be theArrowverses biggest crossover yet.

And no, we arent being hyperbolic.

That comes directly from the Many Powers That Be.

Arrowverse

Frank Ockenfels 3/The CW; Everett Collection; The CW (2); Katie Yu/The CW

Well continue to update this as we find out more.

When and where?

Whos in it?

Ruby Rose as Batwoman, Stephen Amell as Green Arrow, Grant Gustin as The Flash, Melissa Benoist as Supergirl, and Caity Lotz as White Canary

Carlos Serrao for EW

Beyond that, it remains to be seen who else fromLegendswill join in the crossover madness.

And that of course didnt happen.

Im just very honored to be able to do this one last time.

Batwoman

Katie Yu/The CW

Black Lightning himself Cress Williams appears inThe FlashandLegendshours.

Alas,Michael Rosenbaum declinedto throw on the bald cap once more and appear as Lex Luthor.

Furthermore,LegendsJohnathon Schaech will return as Jonah Hex.

Crisis On Infinite Earths: Hour Three

Katie Yu/The CW

Birds of Preys Ashley Scott has been tapped toreprise her Huntress role in the crossover.

How did we get here?

Crisis on Infinite Earths has arguably been in the works sinceThe Flashpremiered in 2014. whenever the Monitor came for him.

Batwoman

Dean Buscher/The CW

How will the each show build to it this fall?

Of the five Arrowverse shows, Crisis will loom rather large overArrowandThe Flash.

So the theme really is coming to terms, acceptance.

This season is really divided up in a way that the episodes before the crossover are pre-Crisis episodes.

Then the back half of the season is all about dealing with the fallout from the events of Crisis.

What does Crisis mean forLegends?

BatwomanandSupergirlpremiere Sunday, Oct. 6, at 8 p.m.

ET and 9 p.m.

ET; andArrows final season premieres Tuesday, Oct. 15, at 9 p.m.

ET; all on the CW.

This post has been updated with additional details.