Akhenaten (Amenhotep IV) was a Pharaoh of Egypt's 18th Dynasty, who by all accounts was kind of a dick. Or at least, enough of a dick to really piss some people off. And by "some people," we mean "all of Egypt."
To his credit, Akhenaten (Amenhotep IV) never really tried to hide how much of a dick he was, nor how little of a shit he gave about Egyptian tradition. As the son of Amenhotep III, he inherited a vast fortune and the right to do whatever the fuck he wanted.
Which is exactly what he did, pretty much from day one. In his first year, he built a Temple to his favorite deity, Aten (the sun God he elevated to "the only God"). In his third year, he threw himself a Sed-festival--normally reserved for a Pharaoh's thirtieth anniversary of Pharaohoodness.
Upon his ascension, he threw away his royal name, demanded that he be worshiped, and started the cult of the Sun Disk--the Aten. Basically, he was just letting everyone else know what a pain in the ass he planned on being during his reign.
Akhenaten was such a colossal dick that when he finally died, the entire nation of Egypt breathed a sigh of relief and went about destroying all evidence that he ever existed. His image and names were chiseled off of pretty much everything he touched. His temples to Aten were dismantled, the city he built was deserted, and the traditional polytheistic views were immediately restored.
Oh, and his name was left off the (roughly-translated) Grand List O' Pharaohs, which was published shortly after his death.