From the popular anime series, Dragon Ball Z, comes Android 18. Acritical Human No. 18, also known as Android 18, is the twin brother of Android 17 and Dr. Gero?s seventeenth android creation, designed to serve Gero?s vendetta against Son Goku. Like her brother, Android 18 usually displays a cool and confident character, especially in battle, although her sarcastic humor is the most striking trait of her personality.