Android 18, originally named Lazuli 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. She deviates from this objective due to her curiosity and disinterest to be evil, which would later serve as a way for her to join the Z Fighters. She's extremely skillful in combat, displaying a confident and cool demeanor, wish a tinge of sarcasm and humor. She's married to Krillin with a daugher.