What to wear: If you're interested in channelling your inner zombie-killer, The Walking Dead costumes are relatively easy to execute. Rick, Michonne, Glenn, and the rest of the crew basically rock normal clothes that are just covered in various patches of blood and guts. If you go as Negan, though, you've got to wear a black leather jacket and carry around a bat.
How to act: A varying mix of terrified, ballsy, or verging on insane.