Sloth zombie courtesy Night of the Living Dead (1990)

The first zombie in the series is a familiar zombie trope. The slow, shambling zombie that only gets truly frightening in large numbers.  Ladies and gentlemen, put your hands together...you know him, you loathe him...give it up for the Sloth Zombie!

Sloth (in Latin, "Acedia) is defined by Wikipedia as "spiritual or emotional apathy." It is a classified as a sin less by what the sinner does than what he does not do.  The slothful fails to work or otherwise contribute to society, wasting his God-given talents. We're all a little guilty of Sloth sometimes (followed by the less well-known sin, "Watching Reality Television"), so perhaps this is why of all the zombies, sloth zombies are the most numerous. 

Slow in action and thought, if they have any thoughts at all, sloth zombies shamble towards their prey.  They are not so much an individual threat as a mindless wave of human flesh, pressing forward without regard for their own personal safety.  The irony is that sloth zombies are tireless; with no need to breathe or eat, they shamble on endlessly until they become physically incapable of motion.

It's fashionable these days to mock sloth zombies.  But this form of sin is insidious.  Who knows what Heaven's standard for slothfulness is?  Perhaps, given the huge quantity of sloth zombies often depicated in modern media, it's much higher than any of us can hope to attain.