At some point in the endgame, Batman turn the Bat-Signal upside-down, where several of his most dangerous foes come and help him to beat Joker... who was here ? Freeze, Ivy, Bane, Croc... i think that someone more was there in that story.

But what was in other stories... are there more stories where some villains help him to beat other bad guys ?

@arkhamwrath

-Scarecrow in Batman and Robin Eternal helped him.

-Riddler did in Batman Eternal

-Harley helped Batman in his fight against Deathstroke in Deathstroke # 5.

-I think Ivy did in N52 Detective comics in the Gothtopia storyline

-Catwoman and him helped each other in various title but in recent times in N52 Batman and Robin 22 (Batman and Catwoman) Bruce and Selina work together.

That's all I can think of at the moment.

That OP makes me want to read that story. Endgame?

@pokeysteve:

Yea Endgame :)

If we include stories from before the new52 :

• The joker in severale "The brave and the bold"
• The riddler a bit in "Batman adventues vol.2"
• Catwoman in "Hush"

That's all I can think of out of my head right now.

He's worked with Bane a few times. I think it was to stop Bane's father King Snake.