My interactions with demons have been fascinating. Yes, demons have presented themselves in monstrous forms and have been in charge of monstrous tasks, such as the reaping and guarding of souls collected as energy sources, money, and food. So too have the non-human intelligences done this, as well as the glorious angels themselves. Demons are the duality of Angelics, operating in the lower soul planes and on earth in concert with the Angelics per a binding agreement with the heads of the houses. Each is an integral part of the intricate process of soul cultivation and balancing on the human collective scale.