Marble Knights: in my collection of beads, I had larger rectangular marble looking bits that I thought would make for interesting terrain elements. My mind changed when I started kitbashing these odd warbands. I used more milliput on the on the shorter dwarven figure, which was a misprinted resin mini I found online ages ago, making a beard to hide all the imperfection caused when removing the figures head. The knight with the upraised sword feels like the team leader to me and has a large corruption like blue tumor on his back. I used a variety of washes and paints on these figures and sculpted the bases with old Green stuff.  

Perhaps this knight with the upraised sword is seeking redemption or purification and the other warriors are his escorts or guides on his pilgrimage. This could also work as a group of holy warriors your adventuring group might stand against in their journeys.