Johan is The Batman from another universe.

Johan Liebert

I am the Johan Liebert from Earth-2... but I took up the mantle of the Bat.

Johan Liebert

I killed the Johan of my world to prevent the collapse of all realities.

Batman

Impossible. You're lying about being me from another universe.

Batman

What's your real game, Johan?

Guts

I don't care what universe you're from - you're still a monster.

Guts

If you're here to warn us, then speak plainly!

Johan Liebert

Superman from the Injustice timeline is building an empire across realities.

Johan Liebert

He's already conquered seventeen universes. This one is next.

Jane Doe

So in your universe, I'm Catwoman, right?

Jane Doe

And you need our help to stop this multiversal dictator?

Batman

If you're really me... then you know I don't kill.

Batman

How did you cross that line?

Johan Liebert

When I saw what the other Johan did to innocent children...

Johan Liebert

Sometimes, Batman, even we must become the monster to save everyone else.

Guts

Finally, a Batman who understands what real war looks like.

Guts

Welcome to the team, Dark Knight.