Christian Bale's Batman Advice For Ben Affleck

Christian Bale has some advice for Ben Affleck about playing the Dark Knight in the upcoming “Man of Steel” sequel – and it’s a useful tip that will come up multiple times a day while filming.

Access Hollywood caught up with Christian while promoting his new film, “Out of the Furnace,” where he weighed in on Ben playing the role most recently occupied by Christian on the big screen.

“I wish him all the best. He’s a very experienced actor and filmmaker. He’ll make it his own,” he said of the Oscar winner. “It should be passed on to another actor and will be again after him.”

WATCH: Christian Bale Reacts To Batkid & Offers Batman Advice To Ben Affleck

As for Christian’s advice for Ben, it was centered on making sure everything gets out of the Batcave in an easy and timely manner.

“[I told him] just make sure you can take a piss without anyone helping him ‘cuz it’s a little bit humiliating,” the actor told Access. “I went through having to have someone help you out of the costume in order to be able to do that. That was main piece of advice for him.”

Christian’s “Out of the Furnace” co-star and Ben’s younger brother, Casey Affleck, also weighed in on Ben playing the Caped Crusader.

WATCH: Casey Affleck On Brother Ben Affleck Being Batman: ‘He’s Got A Lot To Live Up To’

“He’s got a lot to live up to… [there’s] a long line of great actors he’s following, so I’m sure he’ll do fine though… he’ll do great,” Casey said, adding that he thinks Ben will “look good” in the Batsuit.

-- Jesse Spero

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