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Milton (Dallas Roberts)
Death episode: "Welcome to the Tombs"; How it happened: Once the Governor realized Milton had set Woodbury's secret walker pit ablaze, the Governor beat Milton to a pulp and then asked him to kill Andrea. Milton refused and the Governor stabbed him in the stomach, so Milton would bleed out, turn into a walker, and bite Andrea; Shock factor: It was pretty obvious Milton wouldn't last the season, and Roberts was cast as a full-time regular on CBS' "Unforgettable" before the "Dead" Season 3 finale aired. Still, the disturbing twist that he was responsible for Andrea's death was a nasty surprise.