*Bikini (ビキニ, Bikini)[3][4][5] is the wife of Dr. Brief, the mother of Tights and Bulma, the mother-in-law of Vegeta, and the maternal grandmother of Trunks and Bulla.

Bikini went unnamed in the original manga, anime and guidebooks, only ever being referred to as Bulma's mother (ブルマのママ, Buruma no mama).[1] In an interview, Toriyama noted that had he named her he probably would have gone with Panchy (パンチー, Panchī),[6] which was later used as her name in Dragon Ball SD.

Bikini has a thin frame and blonde hair. Her eyes are almost always closed yet, ironically, she is still able to see everything clearly when they are. She is shown to wear upscale clothing and jewelry. In her first appearance, she wears a blue dress. Later on, in the Namek Saga, she wears an orange shoulder-less shirt and tight blue jeans. Despite no mention of extraordinary life extension, Bikini appears to be all but untouched by time or age in all her appearances, dating from Bulma's late teens to present day Trunks' early adolescence. This agelessness seems to hold somewhat true for her husband as well.

In Dragon Ball Super, Bikini's hairstyle alters for the first time in the series. She wears a long purple dress and white pearl necklace in the first saga, then reverts to her orange-striped sleeveless shirt and blue jeans in the next two sagas. Her height, which seemed to be slightly shorter than Bulma's in the earlier series, has now elevated to being the tallest female, as she is shown taller than Bulma, Chi-Chi, and 18 when talking with them at Bulma's party.

In the original, Bikini has been shown to be

a bit of a ditz despite her attractiveness and beauty. For example, she does not even know that Future Trunks is an older version of her grandson, Trunks, though it appears she learned in Super. However, in the Dragon Ball Z Kai version of the show, she is portrayed as slightly less ditzy in the dub, being more aware of situations and commenting from time to time based on the circumstances rather than having no clue of what's going on (yet Gohan still comments that she is weird after dropping Bulma off during the Androids Saga). In addition, presumably because of her ditzy nature, she complimented Krillin's singing ability during a Karaoke session at a Hanabi picnic, despite his singing being lacking at best or downright terrible at worst, and is one of only two to do so (the other being an extremely drunk Master Roshi).

She seems to be, along with her husband, almost entirely oblivious to a serious situation. When King Piccolo was coming to destroy West City, they simply tried to get all their pets and leave. Later on, when they were offered a chance to stay on The Lookout while Majin Buu was at large, she and her husband declined just so they could feed and look after their pets; she reasoned: "Remember even if we meet a gruesome, gory and grotesque end at the hands of this Majin Buu, you can always bring us back with the Dragon Balls." This indicates that throughout the series they care quite a lot for their pets. It is shown in the Gods of the Universe Saga that like her husband she was unaware that he was the richest man in the world until it was pointed out to both of them by Mr. Satan at Bulma's birthday party.

Usually friendly, Bikini does show signs of anger in some fillers. For example, she gets angry when Dr. Brief tells Chi-Chi that the ship is ready for Namek right after her father persuades her not to go. Also, in Dragon Ball Z: The Legacy of Goku II, if the player goes over the cookie limit, she informs him that she will get upset if he makes a "mess" on her carpet.

Bikini has some sort of obsession with sweets, a fact not lost on her grandson who once remarked to her, "What is it with you and food?"*