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Justin Bieber, Complex

Tony Kelly/Complex

Justin Bieber is 18 now, guys, so maybe he's looking to toughen up his image.

We're kidding, but Biebs definitely surprised, even shocked, us in his new Complex cover shoot, out on newsstands April 3, where he channels Tyler Durden and gives us a view of his own little fight club.

What happened to our precious, fresh-faced boy?!

Justin Bieber, Complex

Tony Kelly/Complex

Between smashing things and refereeing a boxing match (oh, and getting blood all over that adorable suit), Bieber gives some serious testosterone.

Maybe this is his way of getting fans to see his transition from teeny-pop singer to adult musician?

"I'm actually a 40-year old man in disguise," Biebs tells the mag.

"People just need to take a chance and listen," he adds, talking about his new album, Believe, which is said to be heavy on hip-hop and rap. "That's going to be the biggest problem, to make them feel like it's cool for them to like my music."

What do you think of Bieber's photos? Let us know in the comments!

GALLERY: Justin Bieber Gets Tough for Complex!