Confidence. That's huge as an actor. Confidence can get you a long way. Maybe it's a cultural thing, being Korean, but my first reflex has always been to exude humility - but it doesn't help you in acting. For acting, humility isn't the best thing. It'll weaken your work. So it's a head game for me. "Can I really be confident in knowing my skill set is down? Can I perform like I own this role?"

Having read the source material, I had to have drawn from that. As a fan, I wanted to remain true to that character, but it was really cool because, as we were figuring these characters out, I realized that there was a lot more backstory, rather than what I had gotten just from reading the book. Glenn doesn't really get much of a backstory there. He's just seen as this kid who is put in this situation, not knowing where his mind-set is, but then you slowly see him start to develop.

Yeah, it's been pretty gnarly. It's fun. It can only be fun, unless you're really squirmy about that. Honestly, during that guts episode, they didn't tell Andrew and I anything. They just put trenchcoats on us and said, "All right, just stand right here and we're going to put this stuff on you."

Somehow, I landed The Walking Dead and it's great because it stretches and works different muscles for me, and it really lets me stretch myself as a performer. Now, I'm really excited to flex my comedy muscle. Hopefully, I'll get some opportunities to do that.

I took up boxing to get in shape for filming because it's grueling - all the running, the heat, the yelling, the crying that we do.

What brought me to L.A. was work! I moved to Chicago after college - I went to Kalamazoo - did my nerd thing, graduated, and moved to Chicago to pursue improv.

Confidence. That's huge as an actor. Confidence can get you a long way. Maybe it's a cultural thing, being Korean, but my first reflex has always been to exude humility - but it doesn't help you in acting. For acting, humility isn't the best thing. It'll weaken your work. So it's a head game for me. "Can I really be confident in knowing my skill set is down? Can I perform like I own this role?"