Death rides a pale horse.
I just recently learned:
The word that was translated into pale, actually means green(IIRC-a light green)-and as you correctly stated Death rides the horse and is followed by Hades. Authority over a fourth of the earth to kill “with sword, with hunger, with death, and by the beasts of the earth.”
I never thought it made sense to say a pale green horse though-so much better to say a pale horse. Ha.