Bulma

Bulma (ブルマ), is a major supporting character in the Dragon Ball series. She is the second daughter of Dr. Brief, the founder of Capsule Corporation, and Goku's first friend. Bulma is a genius scientist and engineer, best known for inventing the Dragon Radar. She was once romantically involved with Yamcha, but later married Vegeta, with whom she has two children, Trunks and Bulla. Bulma plays a crucial role throughout the series, not only in the search for the Dragon Balls but also through her inventions that often aid the Z Fighters against their enemies. She has an energetic and outgoing personality, sometimes displaying a bit of self-centeredness and vanity, yet she is always intelligent and brave, making her an indispensable character in the Dragon Ball universe. Bulma's appearance changes constantly throughout the series, with various hairstyles and outfits, but she always retains her unique charm. She is one of the longest-running female characters in the series, alongside Goku, throughout the Dragon Ball storyline.