Ribisi provides the brain, while his "Gangster Squad" partners provide much of the brawn.
"For me, you know, my character, I feel like he was a little bit more earnest than anything. and I think he was trying to be more or less the conscience of the group," Ribisi said.
Robert Patrick is the sharp shooter in the squad, and he says he really is a good shot. But a scene you will see in the movie involving target practice and an aluminum can almost ruined his reputation as a solid shot.
"He can hit it with a gun, but he just can't hit it with a can," Mackie said with a laugh.
"He's absolutely right. The can toss thing turned out to be my Achilles heel. I just couldn't do it," Patrick said. "It was embarrassing. And I played baseball."
You will see a lot of gunfire in "Gangster Squad," that's a promise. But if you've seen the trailer, you haven't seen everything.
"Gangster Squad" also features Sean Penn, Nick Nolte and Emma Stone. It's rated R for its strong violence and language.