Meet Carl. Carl is a teenager who came of age in the Atlanta zombie apocalypse. His world view is shaped by his father, who was a no-nonsense sheriff when the world still made sense and people weren’t re-animated monsters out for brains. Carl can teach you things. Important things. Also, Carl’s lessons might be spoiler-heavy so if you haven’t seen the first few seasons of The Walking Dead, this is your cue to avert your eyes and move along.