I was a psych major in college and I actually owned two white lab rats. I had to train them and I took them home so that's just kind of missing for me.

Yeah, it's scary. During filming, it wasn't just jitters from being the newer guy there or the greenest guy there. It was also fear of not messing up such an important character.

I felt like I've needed to ask my parents up until about four years ago about everything. They have helped me tremendously, I came out of college with no debt. Everything they made, they just poured into my education.

Maybe it was just me shorting myself to hedge my expectations. As a fan, I was excited about the project. If you look at the body of work for the people involved, I was excited about the project, but I didn't really know. There were people saying, "I think we're going to be part of something huge."

The biggest challenges are in the same vein. It's about retaining all that stuff. Also, the physical stuff is not as easy as we originally thought. I play a lot of sports and I remember saying, "Oh, I'll be fine, running around or doing anything."

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.

You can say that all you want, but even in the little time that I've been in this industry, I've learned that it isn't exactly what you expect, so you've got to have a level head. I thought people would dig it. I thought people would enjoy it. It's AMC. I thought people would be fans. But, I did not think we would be the best new show on television.