Horsemen of the Apocalypse - character design

A task to create 3 characters based on any of the themes that were provided to us, and one of the themes was the four horsemen. While the scope covered only 3 characters, so the 4th (famine) is not included currently, I plan to create that as well in order to finish up all 4.
I think I would like to do some full illustrations for all of them as well eventually.