Putrid and and gruesome, Foul is a worming, writhing Numen responsible for infections and mutations, especially among newborns. It is said a world that Foul desires is one of disgust and imperfections, only then is it really, truly a sight worth seeing. Poison, illness and even death is all a natural passing for Foul, and a world without its downsides isn't a balanced world at all. Foul encourages the corruption of everything and anything with the image of gross glory, honouring extreme differences that come with the malformations. The only goal is destroying anything that seems far too perfect and to rebuild it in a more realistic, fault-filled way.

Foul is most commonly called upon when cursing another and invoking Black Magic.