Zartael the Mad
Zartael IV, also known as Zartael the Mad, was a king of the human empire of Nerath in the Previous Eon. Zartael was insane and brutally slew his father and usurped the throne, signifying the decline of the empire and the downfall of humankind. Zartael cooked and ate his relatives to ensure his power and was obsessed with becoming immortal. He cloned himself many times in magical experiments gone awry. Many instances of the king ran amok throughout the kingdom causing havok. The ruins of his palace are thought to be buried in the Holoroon Marsh, a swamp far to the west in a little known region called The Fang.
The winter holiday known as the Day of the Bastard is celebrated to commemorate the foul deeds of the Mad King.