The men who’ve played Batman is a very small club, which is why they tend to share their knowledge with each other. Shortly after it was announced that Ben Affleck was to play Batman, Christian Bale reached out to him.

“I ran into him at a costume shop when we were both buying costumes for our kids and we talked,” Ben told Us Weekly. His one piece of advice? “Make sure they put a zipper in the suit!”

Christian also told Empire magazine it was hard to let go of the role: “I’ve got to admit initially, even though I felt that it was the right time to stop, there was always a bit of me going, ‘Oh go on … Let’s do another.’ So when I heard there was someone else doing it, there was a moment where I just stopped and stared into nothing for half an hour.”