We interrupt Anthony Joshua’s photo shoot in Beverly Hills to hand him an iPhone. On the other end is a fan, FaceTiming from New York, who can’t believe she’s talking to the one of the baddest boxers in the world. It’s early June and Joshua, the unified heavyweight champion from the U.K., is in the middle of a special trip to the United States with Under Armour that will have him roll through Los Angeles, sit courtside at Game 4 of the Western Conference Finals in Oakland, and check out a few other locales for the first time. In the meantime, hours before the Warriors and Rockets tip, Joshua tries to carry on a brief conversation with the fan who can’t seem to hold her composure talking to the champ.

This probably isn’t the first time he’s dealt with an overly excited fan. Joshua laughs it off and hands back the phone that two minutes ago disappeared into his massive mitts. Interactions like that with American boxing fans are much more frequent these days for the immensely popular 28-year-old, who carries a smile perfectly proportional to his massive 6’6”, roughly 240-pound frame. Joshua understands that if you truly want to be a big deal, especially in boxing, you have to leave your mark in America and, low-key, that’s what has brought him here to the States as he begins to drum up interest for the most important fight of his life—and one of the biggest bouts boxing has seen in almost two decades.

Joshua will soon put everything on the line in a historic showdown with American slugger Deontay Wilder. The winner becomes the first undisputed heavyweight champ in 18 years so it’s kind of a big deal. No matter how badly boxing struggles for relevancy amongst the major sports, even casual fans pay attention when the heavyweight championship is up for grabs.

But the man whose profile in the ring continues to rise internationally still largely remains a mystery to many in America and even to some in the industry itself. Known for being a good guy and refusing to play a character, can Joshua earn the attention of a new audience and convince his haters he’s authentic? Does he even care?

“What am I like? Am I different? I say there will be many ways to define me when it’s all said and done,” Joshua says.

With only 21 fights as a professional under his belt, including his epic showdown in 2017 with Wladimir Klitschko many declared the fight of the year, Joshua is the holder of four of the five heavyweight championships. But is he one of the best pound-for-pound boxers in the world, or just a product of the current state of the division that’s extremely top heavy? Joshua, if you ask him, doesn’t think he belongs on the mythical list. “I’m not good yet,” he says.

Joshua thinks he’s only scratching the surface of his talent, having shed bad habits and narrowed his focus recently. But he’s not exactly living out a dream considering he never fantasized about being heavyweight champion of the world. So what’s he boxing for? And, most importantly, if he hasn’t been ducking Wilder then why did it take so long to come to a preliminary agreement on the fight everyone wants to see? There are many questions Anthony Joshua needs to answer as he tries to gain the attention of American fans. He’s ready to address them.