Iuz

Iuz

Iuz, in his aspect on Oerth as a human male, from the cover of Iuz the Evil (TSR, 1993).
Game background
Title(s)	The Evil, the Old, Old Wicked
Home plane	Prime Material (Oerth)
Power level	Demigod
Alignment	Chaotic Evil
Portfolio	Deceit, Pain, Oppression, Evil
Domains	Chaos, Evil, Mind, Suffering, Trickery, Tyranny
Superior	none
Design details

In the World of Greyhawk campaign setting for the Dungeons & Dragons roleplaying game, Iuz (pronounced YOOZ or EE-uz) is the chaotic evil demigod of Deceit, Evil, Oppression, Pain, and Wickedness. Iuz is variously called "The Old One" and "Old Wicked," among other titles. Unlike most Greyhawk deities, Iuz makes his home on Oerth, where he rules a broad swath of the Flanaess known as the Empire of Iuz. Iuz was also named as one of the greatest villains in D&D history by the final print issue of Dragon. His symbol is a grinning human skull, or a human skull with blood-red highlights.

Iuz was created by E. Gary Gygax.

Iuz was first mentioned in the Greyhawk campaign setting of the Dungeons & Dragons game in the original World of Greyhawk folio (1980), and was then described in "The Deities and Demigods of the World of Greyhawk" by Gary Gygax in Dragon #67 (1982). Iuz was subsequently detailed in the World of Greyhawk Fantasy Game Setting (1983), and in Greyhawk Adventures (1988).

Iuz played a prominent role in the module, The Temple of Elemental Evil (1985).

Iuz was one of the deities described in the From the Ashes set (1992), for the Greyhawk campaign, and appeared again in Greyhawk: The Adventure Begins (1998).

The realms of Iuz were described in the accessory Iuz the Evil (1993), and are further detailed in the adventure anthology The City of Skulls (1993).