Even with the recent casting announcements and series regular upgrades to 'The Walking Dead' season 4, we still feel the pain of a long wait between May and the AMC horror drama's October premiere. We'd previously heard that walkers themselves will play a larger threat in the upcoming fourth season, so how would you like to go behind the scenes and see the latest walkers in action? Preview 'The Walking Dead' season 4 inside!

'The Walking Dead' has no doubt spoiled fans for other zombie media, given the intense makeup and preparation that goes into creating walkers for the the hit AMC drama. And while we wait for 'The Walking Dead' season 4, AMC has given us an inside look at how executive producer Greg Nicotero chooses his walker canvases from "zombie school" actor auditions, in order to highlight the most visually interesting undead.

While we wait for season 4, The next run of ‘The Walking Dead’ will introduce ‘The Wire’s Lawrence Gilliard Jr. as haunted Army medic Bob Stookey, while actors Chad Coleman, Sonequa Martin-Green and Emily Kinney have all been upgraded series regular. AMC earlier confirmed that David Morrissey’s villainous Governor would also return in season 4 as a series regular.

You can check out the latest preview of 'The Walking Dead' through the zombie school video below, and tell us what you want to see from 'The Walking Dead' season 4 in the comments! What new threats would you like to see introduced in the October premiere?