- For other uses, see Louise.
A girl, she was born in the mid-20th century before her planet's scientists attempted to synthesize a life prolongation agent. The prolongation agent mutated into a virus, killing all the adults and causing the children to have slow metabolisms allowing them to live centuries before they reached puberty and succumbed to the sickness they carried.
Around the time when when a landing party from the USS Enterprise visited her world, Louise experienced the rapid onset of the disease in the year 2267. When James T. Kirk and Miri visited an abandoned toy store, Louise attacked Kirk, and he stunned her with his hand phaser. In her weakened state, Louise died from the phaser blast. (TOS episode: "Miri")