(CNN)  -- Jordan Belfi has a great job: He plays Adam Davies on the HBO show "Entourage," a comedy series that takes a look at the life of a young actor, Vincent Chase, and the old friends who surround him in Hollywood.



Jordan Belfi arrives at the premiere of "Entourage" season six in Los Angeles, California.



Davies is one of the few characters on the show who has the ability to shake one of the central figures: the unshakeable agent Ari Gold.



Belfi has been around since the early days of "Entourage" and remembers the humble beginnings of his character's career as an agent under Gold's direction.



Since that first season, Davies has risen to become Ari's chief rival on the show.



Belfi believes conveying the tension between him and Ari is easy, based on the great material he's given.



"It's a testament to the writing by Doug Ellin, the creator of the show. It's just on the page," Belfi said. "When you get setups and writing and dialogue and scenes that good, it makes your job that much easier."



CNN talked to Belfi, who's also in the movie "Surrogates" (opening Friday), about his experiences on the show and his inspiration for the role. The following is an edited version of the interview.



CNN:  A lot of fans really missed that rivalry between you and Ari Gold. Talk a little about how you and Jeremy Piven kind of prepare for that and try to make that real on screen.



Belfi: Adam Davies has become ... one of the few characters on the show that really knows how to get under Ari's skin and push his buttons. Ari is an entertaining character, and it's fun to watch him go after things, but people really enjoy kind of when Ari's off balance.



That interplay, that back and forth, particularly the sort of thing that's happening now [on the show], the constantly one-upping each other, is just really fun to watch. It's entertaining. And I get that response from a lot of the fans of the show. They love Adam Davies for that reason because he just knows how to do it.



Jeremy ... [is] an actor with so much power and force and impact that you're sort of forced to up your game. You're really present in the moment. And when you're there and you're really going back and forth, that's when the sparks really fly.



CNN: Talk little bit about the inspiration you draw from to play Adam Davies.



Belfi: I started way back on season one in the beginning of the show. And back then, Adam Davies was still in his cubicle.



So a lot of the inspiration came from meetings I had when I was starting out -- you know, behavior I experienced from agents and other industry people when I was starting out. I was in a not-too-dissimilar position. ...



And I think that's what people really respond to. There's an absolute foundation of truth -- almost scary truth -- to the things Adam says, the things Ari does, all that kind of stuff. And it's why it's such a visceral experience for people in the industry and fun for people that happen not to be in the industry.



CNN: What are your thoughts on Adam Davies as a person?



Belfi: What gives Ari a little bit of his soul, his heart, is that we have all these scenes with his wife and his family, and you really get to see him as a dad. ... [But] we haven't gotten to see any of the personal life of Adam Davies. So I don't know if there's anything yet to kind of balance out those ruthless qualities he has.



But I think he's the kind of agent that I'd certainly like to have if you're that actor trying to go after that job. You want that agent who's going to beg, borrow and steal
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