Sylvester Stallone, Cast Talk 'The Expendables 3'

The action superstars talk about life on set of the upcoming summer blockbuster.
4:09 | 08/11/14

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Transcript for Sylvester Stallone, Cast Talk 'The Expendables 3'
The expendables 3 is about to hit the box office with an all-star lineup. Big names and Katherine Mathison is sitting down with them. Reporter: It's the blockbuster summer action movie chock full of stars. And for Stallone and the posse, the third time is most certainly the charm. Ideal people want to see it? I think it has a little bit of everything. It's a throwback, but it's modern. You have the young expendables. Couldn't take the stairs? You are representing the young guns here. What's it like being thrown into this mount Rushmore of action movies? Completely underwhelmed. They didn't care about us young guns. They called me names. Rhonda all the time. What did you learn from these guys? Nothing. Not a thing. Taking naps at noon. In some ways you're the odd man out, what was it like for you being thrown into the mix? An absolute pleasure. I worked with sly. The script is a blueprint. I think this line's not so good. You say it like that to him? But then he'd say, yeah, it's from an old draft. Yeah. We were close once. We started this whole expendables thing together. But we had a falling out. And you play the obvious villain in this movie. I don't see him as a bad guy. I saw them as bad guys. As Gibson answers, watch as the interview turns into a fast action sequence. What was that? Hey! And an impromptu game of musical chairs. Stop the music. Okay. And I've lost weight too. Suddenly I'm taller. Who would win an arm wrestling competition? Rhonda Rousey. I'd love to hear from you, what advice would you give a younger version of yourself going into the career? What did you know now that you wish you knew then? Find out what you are good at and stick with it. Do what comes naturally. Don't try to be a shakespeare actor when you speak like me. It's the life lessons that you accumulate. Not so much about the career. It becomes secondary over time. Really. It's about the more important stuff. I think like the power of forgiveness, for example, in your life. You know, you need to do that. That is for sure. Exercise. That is for sure. Man, I've had to forgive. And that's great, sets you free. But I've had to be forgiven. You have to give and take. That's good advice. Make the segue, Kelsie, I heard and read the words you said to your sister's murderer coming up for parole. How hard was that. It was written, foolinot foolish to girl. My dad was shot, my sister stabbed. Can't outlaw guns or knives. Make sure they don't get out of jail. One word of response working on this film? Fantastic. Irreplaceable. Ecstasy. Once in a lifetime. Expendable. Miserable. What movie did you guys make? Can I change my word? I want to change my word. To what? The renegotiable. Termbinabterminable. Adorable. Exactly. Great time with those guys. Expendables 3 ourselves

This transcript has been automatically generated and may not be 100% accurate.

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