Those who follow his career also know Fillion as Captain Malcolm Reynolds in the TV series Firefly. But most agree that the character of Castle fits Fillion like a 9 mm in a cop’s shoulder holster.

What attracted you to the role of Rick Castle?

NF: Someone was telling me about the script and kind of saying that there was nothing really great about it. But one night, I had seven scripts to read and it was the last one. I started reading it while I was sitting next to my girlfriend and I was about 15 pages in when said to her, “I’m going to read you this script like a radio play and you tell me if you don’t think this is great.” After 15 pages, I knew this was going to be a lot of fun. I knew exactly what to do, exactly how to play this guy. I knew this part would be an audition scene and I knew what every other actor’s would do, but I knew what I was going to do—and it would be different. And when I met the producers, I said, “stop looking, I’m this guy. This is me, inside and out.”

Full Article: Interview with Castle’s Nathan Fillion | ACED Magazine