Award-winning Special Effects Makeup Supervisor and Director Greg Nicotero and Producer Tom Luse have also been elevated to executive producers.

Gimple has served as one of the key writers on the series, writing fan-favorite episodes including "Pretty Much Dead Already," the season two midseason finale.

“Scott has been an essential part of this show since he came aboard at the very beginning of season two. He's contributed to guiding this show in a substantial way that has resulted in a lot of the key scenes and storylines fans have dubbed signature moments of The Walking Dead,” said series creator and comic book writer Robert Kirkman. “I am thrilled to begin work on a brand new season of ‘The Walking Dead’ with Scott at the helm, and I truly believe we could be embarking on what will be the best season of this show yet.” "Scott's voice has been an integral one since he joined the show. Greg Nicotero is a true artist whose work is simply brilliant. And, Tom Luse has really created the machine that allows this very large show to get made week to week. We congratulate all three in their new roles on the series and look forward to ramping up production on season four," said Joel Stillerman, AMC’s EVP of original programming, production and digital content.