Android 18 is the older twin sister of Android 17 and Dr. Gero's eighteenth android creation, designed to serve Gero's vendetta against Goku, eventually, becoming a member of the Z Fighters.

A while passed as her body got more and more voluptuous and the only thing she could wear is either a bunny suit or nothing at all. She is seen with a towel over her breasts as she relaxes in the hot springs. "Ahh...~ These hot springs really give off so much relaxation.~" she said to herself