Brief Family

The Brief family is a family that runs a scientist Corporation that is call Capsule Corporation. This is one of the two families in the series to have Human and Saiyan bloodlines with the other being the Son family.

Background
The Brief family is introduced in the series with the character Bulma, whose name comes from the Japanese pronunciation of "Bloomers" (a relatively old fashioned type of underwear). As with Akira Toriyama's naming puns, all the names of associated characters are related to one another. The Brief family's naming theme is being named after types of undergarments.

The Briefs are noted as a family from West City in the series. Supporting the fact that the Briefs are a western family, the Brief's last name is placed after the individual's name, which is consistent with family names in Western culture in real life. Furthermore, the Brief family is seen to primarily dress in western styled clothing. Bulma's family has had a laissez-faire attitude for generations, but Bulma has complete control over things as a rule.

Trivia
all information on the Brief family came from http://dragonball.wikia.com/wiki/Brief_family
 * In Dragon Ball movie 4, when Son Goku meets Bulma, he laughs and says she has a funny name, to which she replies "Don't you think I know that? It's a family name" which is a reference to her family naming scheme.