A work gang of Souls being herded by their Demon Overseer.

The souls of Humanity's sinners. They were cast into Hell for their transgressions against God, and the Demons use them in innumerable ways, treating them as a natural renewable resource and warping and twisting the souls to create anything from Soul Bricks to weaponry. Most Souls who are not converted into bricks, Soul Beasts or other items are attached to work gangs. Especially evil Souls are confined to cells and tortured for eternity.