Christian Bale may have handed the baton over to Ben Affleck, the next caped crusader, but that doesn’t mean he has no more advise to give.

Affleck will replace Christian Bale as Bruce Wayne in the “Man of Steel” sequel directed by Zack Snyder, while Henry Cavill will reprise his role as Superman, according to recent claims from Warner Bros. The director of “Argo” will be the eighth actor to play Batman, yet most fans agree that Bale was the best at doing so.

What counsel did Bale provide to Affleck after facing the Joker, the Penguin, and Ra’s al Ghul? The renowned actor said that having to use the restroom while performing is the most challenging part of the role!

In the wake of Affleck’s selection for the upcoming “Superman vs. Batman” film, Bale, who rose to fame as the DC Comics superhero during his three-film run, was asked if he had any advice for the actor. His advice: avoid getting caught short in the Batsuit.

When Bale was promoting his new movie Out of the Furnace, he told Access Hollywood, “The only thing I said to him was to make sure to [be able to] take a piss without having anyone help him, because it’s a little bit humiliating. You have to have someone … help you out of the costume in order to be able to do that. So that was my main piece of advice for him.”

Either way, Bale reminded fans of the Warner Bros. franchise that it’s not about the actor who plays Batman — it’s about the character.

“It’s great to see the symbol of Batman is so much bigger than one person — than any film, any comic book, any TV series — that’s really what it’s all about,” Bale added. “And it’s irrelevant which actor is playing it.”

While Bale didn’t much else in terms of advice, he did provide fans with an interesting tidbit regarding the infamous Batman voice. Bale apparently invented the deep-throated growl while auditioning for the role for Christopher Nolan’s first “Dark Knight” production. “They put me in Val Kilmer’s suit,” said the Oscar-winner of his audition. “It didn’t even fit properly, and I stood in it and I went ‘I feel like an idiot’. What kind of guy walks around, dressed like a bat? And is then going to go ‘Hello, how are you? Just ignore that I’m dressed as a bat.’ Of course, he’s meant to be doing this. If you look at the history of the guy and the pain that he went through. I went ‘I can’t do this in a normal voice. I have to become a beast in order to sell this to myself.'”

“I went home that evening, and my wife said: ‘How’d it go?’ I went: ‘I kind of did this.’ And I showed her, and she went: ‘Oh, you fucked that one up, didn’t you?’ Thank God they went for it. [The voice] ain’t for everybody. Ben’s obviously going to have to do his own thing, but it was the only way that I could find how to get into that and to justify wearing the fricking Batsuit. Otherwise, he’s just loopy beyond belief. He’s loopy, but he’s loopy with a method to his madness.”

Affleck admitted over the weekend that it will be an impossible task to top 5-year-old cancer patient Miles Scott’s portrayal of the caped crusader in San Francisco last week, because he was the “best Batman ever.”