"When the Lamb opened the fourth seal, I heard the voice of the fourth living creature say, “Come and see!” I looked and there before me was a pale horse! Its rider was named Death, and Hades was following close behind him. They were given power over a fourth of the earth to kill by sword, famine, and plague, and by the wild beasts of the earth."
Riding upon a pale horse was the most famous of all the horsemen and the only one to be specifically named in scripture, Death, being given authority to kill men and animal alike the fearsome spirit was accompanied by Hell itself and was said to sweep across the land. Bringing an end to life by sword, famine and other woes.
Unlike the other three Horsemen, Death has also been specifically mentioned in texts surrounding the Day of Judgement where God himself takes both Hades and Death, alongside Satan and all his followers and places them in the Lake of Fire for all of eternity.
Also unlike the other three fellow horsemen, the Horseman of Death carries a scythe which is commonly the well-known weapon of the Grim Reaper that is the personification of Death itself.