I love this!

Though I have some suggestions regarding the harbingers:
While the design for Death and Conquest are great, War and Famine's design don't feel really special if we're being honest. War's design could have more tribal elements and maybe even some elements of armor in his design. Famine on the other hand should look like she's on the brink of starvation, with her skin looking even more pale than here and wearing tattered robes

Hope this helps!

oooo! are they new EXEs OCs? they look amazing man!! ^^