The Fangs of Noph is a cult that operates in the sewers of Madrioc under the Curtain. They covertly worship the god Noph. They are led by Lingering Dark. While the worship of Noph is taboo and many who praise him are ostracized, the Fangs appear to treat it as more of an after-work club.
The Peas encountered the Fangs of Noph when they were investigating the cult under the behest of Todalis Sindria.