12 Deranged Rulers Too Outlandish For The History Textbooks

Published July 14, 2017
Updated September 27, 2024

With great power comes great responsibility — and, it turns out, great cruelty, sadism, violence, delusion, and sexual deviancy.

When it comes to holding a position of extraordinary power, it sometimes seems as though being insane is almost a job requirement. Few of us would thrive in a role of supreme leadership, and most would be incompetent at best.

But, as history shows, incompetence is not actually the worst character trait that a leader can have. Some leaders are so unhinged that they’re downright dangerous.

In fact, countless rulers throughout history have gone mad with power. Here, we’ve collected the most ruthlessly deranged of the bunch:


Next, read up on history's biggest psychos. Then, discover historical figures that you didn't realize had legitimate mental disorders.

author
All That's Interesting
author
Established in 2010, All That's Interesting brings together a dedicated staff of digital publishing veterans and subject-level experts in history, true crime, and science. From the lesser-known byways of human history to the uncharted corners of the world, we seek out stories that bring our past, present, and future to life. Privately-owned since its founding, All That's Interesting maintains a commitment to unbiased reporting while taking great care in fact-checking and research to ensure that we meet the highest standards of accuracy.
editor
John Kuroski
editor
Based in Brooklyn, New York, John Kuroski is the editorial director of All That's Interesting. He graduated from New York University with a degree in history, earning a place in the Phi Alpha Theta honor society for history students. An editor at All That's Interesting since 2015, his areas of expertise include modern American history and the ancient Near East. In an editing career spanning 17 years, he previously served as managing editor of Elmore Magazine in New York City for seven years.