Areo Hotah is Doran Martell's (Alexander Siddig) captain of the guard in Dorne, and he’s a total badass. He’s a big brute who carries around a giant axe and says very little. If you’re thinking, “Wow, this guy sounds cool, why are you surprised he’s in the show?” It’s because he has zero personality and doesn’t really do much, he just observes. Because of this, he’s been given the nickname, “The Camera that Rides” by some fans who believe his sole purpose is to show what’s going on in Dorne. Since the show already has cameras, why include Hotah?
Areo does get one chance to do something exciting in the books (it involves chopping someone’s head off in a fight), but it deals with characters who appear to be cut from the show, so we’ll be surprised if it’s a scene that makes it on screen. Hotah has the potential to be a pretty cool character if the show gives him even a sliver of personality, but we’ll have to wait until season 5 to see what kind of Hotah we end up with. If he doesn’t work out, they can always just strap a GoPro onto a dragon.