Emperor Muro III was the ruler of a planet located in the Delta system in the 17th century.

Circa 1666, Muro married Princess Saeena, but on their wedding night she was reportedly killed by poison. In reality, medical testing showed her to have powerfully regenerative cells that would give her an extended life span and near invulnerability. Muro, scared that she would be considered a freak of nature rather than a person, staged her death and hid her away until a royal retreat on Mila Xa could be rebuilt as their private paradise. Three years later, Muro staged his own disappearance on a space expedition and lived with Saeena until his death at the age of 84. Sareena had his body preserved in a glass case in her room, where it remained until the destruction of Mila Xa in 2266. (TOS comic: "The Haunted Asteroid")

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