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 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'm glad that people have responded well to it, so far. I'm thankful for that. But, I'm also excited now that I have a better grasp of this character than I did before. I want to take it even further and really explore who Glenn is.
I know a lot of people who say, "I reluctantly watched the first episode because I don't really like zombies and that stuff, but I was pleasantly surprised by the characters and the drama of it all." I think that's what keeps people coming back and brings new watchers to the show. What the show does is cross many, many different viewerships.