Bulma Briefs (733 - May 8, 774; May 8, 774 - ?) was born to Dr. and Mrs. Briefs, making her the heir to the Capsule Corporation. Inheriting her father's genius, Bulma was an accomplished inventor by the time she was a teenager. Shortly after entering high school in West City, Bulma discovered the 2-Star Dragon Ball in her basement. A few months later, she found the 5-Star Dragon Ball in a cave. Inspired to find them all and wish for the perfect boyfriend, she developed the Dragon Radar and began to track the other Dragon Balls down during her summer vacation. During her quest, she met a lifelong friend in Goku, as well as meeting Yamcha, who became her boyfriend. After the group ruined the plans of Pilaf, Bulma returned to high school, although she met Goku and company again on several occasions thereafter. However, she eventually broke up with Yamcha, believing he was unfaithful to her.
After the battle with Nappa and Vegeta, where Yamcha was killed, Bulma took Krillin and Gohan to Planet Namek to find the Namekian Dragon Balls. She largely kept out of the conflict with Frieza's forces, although she did outsmart a pair of his troops and was briefly possessed by Captain Ginyu. Bulma was happy to see Yamcha resurrected after Frieza's defeat, but their relationship failed to take off again- particularly after Bulma fell in love with Vegeta. Although Vegeta was not the most affectionate boyfriend, Bulma did have a child with him, Trunks. She and her father helped during the conflict with the androids, developing a device to deactivate Androids 17 and 18 and rebuilding Android 16 after he was damaged by Cell.
After Cell's defeat, Bulma and Vegeta continued to live together. She weathered Vegeta's corruption into Majin Vegeta and subsequent death, only to be transformed and eaten by Majin Buu. She was resurrected with the planet Earth and all its good people, and donated some of the energy that helped destroy Buu once and for all. Bulma and Vegeta later had a daughter, Bulla.
Dragon Ball GT
Bulma later fell under the control of Baby, providing technology to him, as well as creating the Brute Ray Amplifier for him. After being freed from Baby, Bulma remained on the sidelines, although she did use the Brute Ray to transform Vegeta into a Super Saiyan 4.
In the alternate future where Goku died and the androids ravaged the world, Bulma watched over her son Trunks, ultimately developing a time machine so that he could alter history.