Omega
From Mistipedia
Known only as "Omega," this spellcaster was presumed to be long-dead by Perseyus Lathenna. Omega's spellbooks were discovered on the Isle of Demise and eventually forwarded to Lathenna. In the field of protective magics, Omega was apparently unusually powerful and remarkably inventive.
Omega is described as a sorcerer, but the fact that he (or she) possessed spellbooks makes his actual character class uncertain.
References
Van Richten's Arsenal, p. 33
