One Direction heartthrob Zayn Malik recently sat down for an interview with Billboard as part of the Best of 2012 feature and explained that he's the go-to member of the group who is cool-headed.

Speaking about his role in the boyband, the 'Little Things' hitmaker revealed that he likes to do his own thing and remain calm when things around him get crazy:

"I'd call myself the mediator. I kind of just float around and do my own thing. I'm kind of chilled out, laid back. But whenever it gets into a rap session I'm always looking for something to do. I love to write. I'm kind of like a bit of everything wrapped into one."

He also opened up about branding and confessed that sometimes they are approached by companies who don't represent their values or fit their image, and it's often a game of personal taste and matching the endorsement to what they're about as a unit:

"You know what, I think there's always gonna be interest from people that might not actually fit your brand. And some people need to take in the endorsements just for the sake of taking them. We try to take ones that best suit us and do things we want to put our name to and just have a laugh."

"We try to choose things wisely as we can - we have a lot of help with management and stuff, but at the end of the day we're still new to it all in the sense that we just try to do whatever's good for us."

Watch One Direction's interview with David Letterman below: