Android 18 (人じん造ぞう人にん間げん１８号ごう, Jinzōningen Jū Hachi-Gō, lit. "Artificial Human No. 18"), originally named Lazuli (ラズリ, Razuri)[4] when she was an ordinary human, is the older twin sister of Android 17 and Dr. Gero's eighteenth android creation, designed to serve Gero's vendetta against Goku. Krillin (クリリン, Kuririn) is a major protagonist in the Dragon Ball series. He's one of the most powerful and talented martial artists on Earth. He is courageous, faithful, and good-natured.