Jeremiah Maru-Stahl

Jeremiah Maru-Stahl was a dictator on his planet; he killed half a million people during his rule.

Biography
Maru-Stahl was a steelworker who fomented a rebellion and overthrew the ruling Imperial Family. He became a dictator. A rebellion formed to overthrow Maru-Stahl which resulted in a war known as the Hundred Days War.

Maru-Stahl was overthrown by the Eighth Doctor at the battle of Nova Croix. Maru-Stahl became mentally unstable and was moved to a hospital under the care of Elias Greenwood. Greenwood had no luck at improving Maru-Stahl's mental condition and called for the Doctor, the Doctor had many talks with Maru-Stahl but they ended with himl retreating more and more into himself. He was placed in confinement for the rest of his life. (ST: Gazing Void)