When it comes to The Walking Dead, we — and by "we," we mean the audience and the characters and everyone else in between — have really gone through the ringer. Case in point: the horrifying season seven premiere, which sent the Internet into a full-tilt meltdown. When you take a look at how much the cast has changed over time, it becomes clear that yes, everyone is very dirty, and yes, everyone has really been through a lot. Keep reading to see all the show's most haunting moments.