The Infernal Demons, also known as Infernals, are the supernatural inhabitants of Inferno that can be summoned by the Umbra Witches as part of their role of maintaining the darkness. These demons bestow witches with great power and wisdom and are mainly used to fight and hunt down the angels. However, this power comes at a high price. If a witch does not sacrifice angels every day or she dies/is killed, she is forced to fulfill the contract to the demon she made a pact with and her soul is dragged down to Inferno for the eternity.