TV show: “Star Trek: The Next Generation” (1987-94)
Background: Data is an android who is the second officer and chief operations officer on the USS Enterprise. He was made by Dr. Noonien Sooong, and is the strongest and arguably the most intelligent member of the crew.
Why we love him: Although initally he didn't understand human emotion, once Data (who later became a cat-lover) was implanted with an "emotion chip," he became much more human.
Where he is now: The original Data was destroyed trying to save Captain Picard from a warship, but not before sharing his memories and experiences with the young B4 so eventually, he may be able to rejoin the crew as his old self.