Dagon Keywire is human, several centuries old, an influential member of the Shadow's Hand, and an information broker. He does go on missions (though presumably he once did), instead staying in Ravenhall and presiding over their library. He trades information for information and will keep information received in such trades secret for up to a year upon request, though if such a request is made he will give less information in return for what he receives. He is also the boyfriend of Elise.
Ilea has requested information from him about Edwin Redleaf, and about evolution options for the Ash Wielder class.