Rayna (aka Rayna Kapec, Reena, Rayna 18?): Rayna was the android from Star Trek: The Original Series episode "Requiem for Methuselah". She was created by a man named Flint who is about 6000 years old and had many identities through the ages such as: Leonardo da Vinci, Johannes Brahms, Solomon, Alexander the Great, Lazarus, Methuselah, Merlin, Reginald Pollack to name a few. Unfortunately, Rayna gets involved in a love triangle between
and Kirk. Her new found emotions are too much for her and seeing the two men
she loves fighting causes her to "die". I guess Flint was never able to repair and reboot her
and Spock had to use the Vulcan mind-meld to help Kirk get over the loss of the
woman/robot he loved so much.
(Image courtesy of Memory Alpha)