Great Muzuma

The Great Muzuma, encountered briefly by Rincewind and Eric Thursley in Eric, is the gloomy, homicidal, and despotic, ruler of the Tezuman Empire, a man who in parallel with past Patricians has been rendered more than usually mentally fragile by the burdens of office. Add the oppressive, gloomy and generally uncongenial aspects of the Empire, and it is clear to see how he can get somewhat touchy.

Annotation

One of the last rulers of the Aztec Empire before its change of management was the Emperor Montezuma, who was thought to be the end-product of the sort of inbreeding that keeps the royal line pure of taint by commoners. With all that implies. He was certainly incapable of grasping the threat posed by the white men from faraway Spain, taking them as manifestations of the Gods.