Android 18 was created by Dr. Gero with androids 16 and 17. She, like 17, showed no sympathy for anyone and basiclly killed numerous humans and destroyed many cities with 17. Later in the Cell Game, 18 was abosorbed by Cell to meet his completion. After Cell self destructed however, 18 was spat back out. After the battle with Cell ended, the Z warriors wondered what they'd do with 18. Everyone pretty much agreed to do away with her except for Krillin, who had fallen in love with her. They latered wished for her to become human using the DragonBalls. Later, 18 married Krillin and had a baby girl with him. She was named Marron. 18 eventually faded out in the Buu series and didn't serve too much of a role at all, but she is the only android that survived.
