Panchy

Mrs. Brief is the wife of Dr. Brief, including the mother of Tights and Bulma. She is also the grandmother of Trunks and Bra. Her first name is never revealed in the series, but in an interview with Akira Toriyama. He said that if he was to give her a first name, he would choose the name "Panchy" a pun on panties, matching the scheme of Bulma's family members being named after undergarments.

Voice Actresses
all information on Mr. Brief came from http://dragonball.wikia.com/wiki/Mrs._Brief
 * Japanese :
 * English :