Production on The Walking Dead has been happening in Atlanta since May, working towards the highly-anticipated Season 3 Premiere airing Sunday, October 14. Today, we have word that Dallas Roberts (The Grey) has been cast as Milton, a brand new character that does not come from Robert Kirkman's comic book series.

Milton is a Woodbury resident and right-hand man to The Governor (David Morrissey). Here's what Robert Kirkman had to say about this new character, who will be studying the "walkers" quite closely.

"Milton is the details guy. He's the guy that works with the Governor, who is monitoring all situations and is trying to help the Governor make sense of this world that they're living in. He's not exactly a scientist, but he's a smart guy that is trying to find out how zombies behave. Watching him do his little experiments is going to be a lot of fun."

Executive producer/showrunner Glen Mazzara also revealed that, while Milton is not a physically imposing presence, he is a valuable asset to the Woodbury community.

""We were examining, 'How do people survive in this apocalyptic world, and what can people contribute?' And we didn't think it was plausible that every single character we meet is an efficient zombie killer. We just didn't buy that everyone we know would be active and deft enough to kill every walker. We wanted to show how other people survive, and Dallas has come in and helped us establish that character. He just adds a lot of heart and humanity to Woodbury, which further complicates what that is. That is a real town with real people and real survivors. It's not necessarily a group of bad guys."

Dallas Roberts is no stranger to the AMC network. He starred in the short-lived drama series Rubicon that was canceled after just one season in 2010.

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