Writer and director James Gunn repeatedly points out that Marvel Studios is finding success in adapting obscure characters to the big screen by selecting actors who are right for the roles as opposed to actors who from a business perspective may be more marketable. It’s that thought process that let Gunn make the unusual, yet inspired casting choice of Chris Pratt as the lead in Guardians of the Galaxy over dozens of others who auditioned.

When first cast, some fans of NBC’s Parks and Recreation didn’t find Pratt to be in “superhero shape” for such a role, but the actor’s workout regiment for his supporting role in Zero Dark Thirty helped prove otherwise. Then came the photo

Two weeks ago, before stepping into the spotlight with castmates at Comic-Con this weekend, Pratt tweeted an image of him topless. He admitted doing so was “douchey” and that his brother convinced him to do it to show fans that he’s taking the physical aspect of the Guardians of the Galaxy job seriously, so while at Comic-Con he was asked about it.

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The leader in the flesh right here…

Chris Pratt: [Looks around] Me? Holy shit! Yea, it’s me.

What can we expect from your Star-Lord/Peter Quill?

“Oh man that’s a tough question…there have been a lot of incarnations of this character over the years and I think what’s nice about James Gunn, who’s directing this, he really wants this to be an organic and sort of real character that I can breathe my own spirit into. So it’s going to be unique cause most people don’t know who I am. So hopefully it will be a little bit of me in there and that will make it different than if it wasn’t me. I’ll probably get better at these questions as the time goes by. (laughs)”

Were you surprised by the overwhelmingly positive response to the Instragram photo you posted?

“Oh yea that was something else! That was like… I’ve never really felt any douchier  the day after I sent that photo out. And I had all my friends tearing me apart on that one. For the most part it was pretty positive. I haven’t always been fat but I have been fat for about the last eight years which is really fun and really great I love eating food and drinking beerand having fun with my life. But I was also kind of depressed a little bit when I was fat. I think there’s probably people out there that can agree and understand what that feels like. And I’ll them, ‘hey, if you just bust your ass and get after it all it takes is about 6 months really. 6 months flies by whether you’re working out every day or whether you’re not. So if you feel compelled totry to do something about it, take some action get into shape then do it. You could, you really could do it in 6 months and all you have to do is book a Marvel movie and have a deadline. And if you don’t and get fat then you might get fired then it’s easy.”

Read our description of the Guardians of the Galaxy Comic-Con footage and check out our character guide for more! Happy with the Peter Quill casting choice?

Guardians of the Galaxy is directed by James Gunn off of his script co-written by Nicole Perlman. It stars Chris Pratt, Zoe Saldana, Dave Bautista, Lee Pace, Michael Rooker Karen Gillan, Djimon Hounsou, Benicio del Toro, John C. Reilly, and Glenn Close.

Thor: The Dark World on November 8, 2013, Captain America: The Winter Soldier on April 4, 2014, Guardians of the Galaxy on August 1, 2014The Avengers: Age of Ultron on May 1, 2015, Ant-Man on November 6, 2015, and unannounced films for May 6 2016, July 8 2016 and May 5 2017.

Follow Rob on Twitter @rob_keyes for your Marvel movie news!