They represent the end of days. Death, Famine, Pestilence and War. They are the end of man, bringing death and despair wherever they go. They have only one purpose: to usher in the Apocalypse, and they will not stop until there is nothing left.
Food will slow fade away, leaving millions to starve, pestilence and plague will ravage the Earth, war will unleash a torrent of blood and finally, death will claim all.
These are the 4 Horsemen of the Apocalypse.
The end is here.