Android 18

Android 18 is a slender, athletic and beautiful woman of above-average height and fair complexion. She has shoulder-length blonde hair, although its specific shade varied between light/golden or platinum that parts over her left temple, which she generally keeps tucked behind her ear. She consistently wears small gold hoop earrings on both ears. Her hair is apparently natural due to her not minding too much when Future Trunks sliced parts of it off during his fight with her. She has a fairly large chest, large enough that Master Roshi after their plane crashed took the opportunity to plant his face in her bosom and smother his face within, leading to her nearly killing him.

When she is first activated by Dr. Gero, she wears a blue denim vest and skirt (with the Red Ribbon logo on the back of the vest) with dark blue tights, a brown belt, brown boots, and a black shirt that has white and black striped long sleeves. After her clothes were ruined in her battle against Vegeta, she changes to a western-style outfit consisting of a brown armor vest and skirt with dark navy leggings, a blue-green long sleeve turtleneck shirt, and brown cowboy boots. Later when the androids arrive at Goku's House, she wears a black mini vest with a golden triangle pin, a white short sleeved undershirt with a pearl necklace, dark teal jeans with a golden chain, a brown belt, a pair of short black gloves with a gold bracelet on the left one, and black flats with orange socks.

When she is married to Krillin and living at Kame House, she wears a pale blue buttoned-up denim vest, white jeans, red hoop earrings along with a red bracelet on her left hand, and black flip-flops. Her blue eyes had a slightly darker coloration than last time. Later, at the World Martial Arts Tournament, she wears a black shirt with white and black striped long sleeves, blue jeans, a brown belt, and black flats with orange socks.

Like her brother, Android 18 usually displays a cool and confident demeanor, especially in battle, although her sarcastic and biting humor is the most prominent trait of her personality. This is demonstrated when Goku takes notice of her assembly with the Dragon Team at the 25th World Martial Arts Tournament, leading to the retort "Look, he noticed. How cute.", as well as dryly saying "Spare me" when Krillin reveals to Goku that they married. Shortly after this, she is asked by the World Tournament Announcer if her real name is legitimately "No. 18", to which she responds, "My father was pretty dull". Although she isn't characterized for this, 18 can be very curious if she is really interested in something, to the point of activating her comrade Android 16 and wondering what present she will give to her husband Krillin during a dispute of a wish with the others using the Dragon Balls. She often expresses herself in her cool and downplayed manner well into her marriage with Krillin, often smiling in a somewhat subdued fashion that conveys her very laid-back personality, however, she is often seen smiling. However, 18's sense of humor is not always tactful, as she jokingly expressed to Future Trunks that she wanted reimbursement for him killing her alternate universe counterpart, much to Future Trunks' displeasure. This is a rare instance where Android 18's humor was anything but tactful, as per her usual timing. This failure is likely due to Android 18 being unaware how murderous her counterpart was and how much Future Trunks had suffered because of it, as she likely would have been more sensitive had she known the full extent of the destruction and suffering caused by her and her brother's counterparts. She is also shown to be rather prideful, though not to the same extent as her brother had been.

As an older sister and delinquent, and later as a wife and martial artist, Android 18 is shown to be outwardly commanding, insisting that she and her brother 17, and later she and Krillin, have to make strides to improve the family's financial situation, insisting Krillin to join the Tournament for the prize money, forcing Mr. Satan into a deal about giving her 20 million Zeni to the point of destroying his property and cowing him into multiplying the prize money a hundred-fold, wanting Shenron to grant her wish for a present for Krillin, and initially saying that she would only fight at the Tournament of Power if she gains a large sum of money for it although she later decides to enter because she suspects that the tournament is not really a game. Android 18 is hinted to dislike driving solely because of Android 17's insistence on driving around aimlessly without anything better to do. However, 18 still exhibits some of her sensitivity and even protective side, even outside of her family since she showed concern for Vegeta after the latter was knocked out for Jiren during the Tournament of Power. This is in stark contrast to her alternate self from Future Trunks' timeline, where she is a murderous sociopath who cares for no one but herself and her brother though this is mainly due to the fact that Future Dr. Gero had altered Future 17 and 18 to hate humanity, which never occurred in the main timeline. 18 also possesses a vast distaste if not outright hatred of violence against children, to the point that after witnessing Lord Beerus's attacks against Gotenks she lost her temper and proceeded to assault him, despite his decisively superior power. This is likely due to her instincts as a mother and fondness for her friends' children despite being frequently annoyed by the young Super Saiyans. Unlike her brother, she, like Goku and any other fighter, sometimes has the tendency to let her guard down during battle, allowing her opponents to take advantage, primarily because of her cool and laid-back attitude.

Like her brother, she developed hatred towards Dr. Gero for modifying them against their will, though interestingly, she still uses the name No. 18 instead of her original name Lazuli and even refers to Dr. Gero as her father, albeit sarcastically when asked about her name during the World Tournament. It was this shared hatred and distrust of Gero that convinced 18 that Cell was only imitating 17's voice to trick her. Though she lacks her future counterpart's sociopathic and murderous personality, she does share her counterpart's love of shopping and interest in fashion, as well as taking care in maintaining her appearance and dislikes having her clothing or hair damaged in battle. She is shown to dislike Chi-Chi's Chinese dresses while trying her clothes when the Androids come to Goku's House looking for Goku. This is in contrast with her future counterpart who had no problem with the Chinese dresses she tried on while shopping for clothes during The History of Trunks special, showing that she and her counterpart apparently have different tastes in fashion.

Android 18 seems to have grown kinder and more compassionate, is often seen smiling compared to Z, where she is shown always folding her arms and looking withdrawn from her allies (like Vegeta and Piccolo, with the former before being accustomed to earthly society), mostly smiling when she sees her daughter and participating in some activities with others, she participates in the bingo tournament.

Despite her reserved and abrasive personality, she shown on several occasions that she can be proactive to develop bonds with people who may not be friendly in return, during the lunch break of the 25th World Tournament she sits next to Vegeta who is stuffing his face and does so despite the table having plenty of open seats. The unspoken bond is also heavily implied when Goku and Vegeta returns from the battle against Kid Buu as everyone at the Korin Tower has their attention focused on Goku except who is smirking knowingly at the saiyan prince who scowls while looking away.

When she encounters Future Trunks after so many years, she is shown to be more kind and friendly to him than the last time they met, giving him a fist bump and joking about her future self's death. In addition, she also ended up joining the Tournament of Power, not due to money, but because she suspected from both the increasing prize money, Goku and Gohan's increasingly desperate offers to have them join, and Gohan's serious disposition that the results if they lost the tournament would be very severe. However, she is cold towards her brother after reuniting with him for the tournament and tells Krillin not to force it when he tries to break the ice by initiating a friendly conversation with his brother-in-law.

Despite this, both siblings are still capable working well together as a team during the Tournament of Power and even strategize together in the heat of battle to take advantage of their infinite stamina. Android 18 also nevertheless still deeply cared for him, as she was very distraught when he seemingly killed himself to save Goku and Vegeta along with Universe 7. She states she has been working with Krillin on attack coordination and that it reminds her of the old days fighting alongside her brother, though notes that she and 17 would never actually try and attack deliberately together, as they simply just naturally had good timing due to being twin siblings. However, she notes that it is not the same with Krillin as she needs to focus more on Krillin and use more concentration when coordinating her attacks with his, though she doesn't mind it really.

However, she still at times retains some of her original cool and sarcastic nature, where she offhandedly mentioned that "even the likes of Krillin" could beat Wild Tiger after seeing Pan beat him.