Zagyg (ZA-gig) is the Mad Arch-mage, servitor of Boccob, the Demi Power of humor, eccentricity, and occult studies. He is mad inasmuch as none but his master seem to be able to fathom his reasoning and sense of humor. Zagyg was once Zagig Yragerne, one of the early rulers of what is now the City State of the Invincible Overlord. Part of his rise to divine status required the capture of nine demi powers of opposing alignments (including Iuz, Merikka, Wastri, and Rudd) and imprisoning them below the City State. While some of these dempowers were freed by adventurers later, their temporary confinement (and Boccob's sponsorship) was sufficient to allow Zagig's ascendence. Eccentric and likely insane when a mortal, he chose the rune of insainity as his symbol.  Zagyg has few clerics and very few worshippers.

Zagyg is rarely portrayed, since he can appear in any guise he wishes, but the few portraits that exist show a balding, white-haired, portly fellow with a wide smile and eyes inscrutable closed. Zagyg is sometimes used as a messenger for Boccob on Wearth.

All deserve and need to be entertained and surprised by humor, although preferably in a manner that leaves them wondering for some time; to provide this service is of the highest priority. The quest for odd bits of information on magic is of utmost importance, and above all one should live a life of unpredictability and abstain from repetive habits.

Zagyg's few clerics enjoy bringing strangeness and humor to the lives of those around them, especially those inneed of comedy to lift up their dulled souls. many work as bards, travel far when their jokes are misunderstood or cause offense, and try to uncover lost magical knowledge. Most have at least one odd personal quirk, although whether this is an actual trait or one affected solely for the observer os debatable.

Zagyg receives small offerings and homage from time to time, from sages and scholars studying difficult and arcane areas of lore. Whether Zagyg takes any notice of this is unknown.