Kirkman has not seen the final cut just yet. "I know that I come out during some sort of argument and I try to talk about zombies for a little bit, but then I am swiftly eaten and devoured by a bunch of zombies," Kirkman tells us. "It's not the biggest role and I don't expect to be winning an Emmy anytime soon. But hopefully it will be memorable enough to have a lasting effect in the Robot universe."

And yes, Kirkman did his own screaming.

"Getting in a room and being able to scream as loud as you can in front of other people on the other side of the glass is certainly a bit awkward, but it was fun," he said.