Android 18 was created by Dr. Gero. 18 was a human runaway with her brother, Android 17. But she was captured and turned into an android. In Dragon Ball Z, 18 was waken up from her nap by Dr. Gero. She fought Vegeta, and won afterwards.Later on, She was absorbed by Semiperfect Cell. Android 18 was threw up by Cell after Gohan punched his stomach. She is now married to Krillin and had a daughter named Marron.