Q: Jack is a pretty tough dude. Have you ever known anybody like him?
A: Deadly serious, quiet-types of people? I've met a few of those. I'm not saying names; I grew up in San Francisco and it's obviously quite different, but I was surrounded by a lot of interesting characters -- revolutionary-type people. For this Jack character I had to do some stuff to learn about how someone gets to this state, being a calculated sociopath.
Source and more: AMC Blogs
