Dr. Brief is the founder of Capsule Corporation and the man responsible for the invention of Dynocaps Capsules, which can shrink large objects down to pocket sized capsule of namesake. He is easy-going and friendly. Dr. Brief rarely leaves his home, even if it means almost certain death; in the Majin Buu Saga, he and his wife refuse to leave their pets even after Capsule Corp. has been specifically targeted for destruction. This is probably due to the fact that they know they can always be wished back with the Dragon Balls. He can often be found tinkering on a number of complicated gadgets while surrounded by his beloved pets. His favorite pet is a small black cat named "Tama" (called "Scratch" in the English dub of the anime), which usually resides on his shoulder.
He made Goku a spaceship for his travel to the Planet Namek, modeled from the spaceships of Kami and the one left by the Saiyan Nappa. He and Bulma restore Android 16 who was badly damaged by Semi-Perfect Cell during the Cell Games Saga, showing off their technical know-how; he also heavily modifies and improves Goku's spaceship, and creates a gravity room for Vegeta to train in. Usually Dr. Brief is seen with a cigarette in his mouth (which has been edited out in the early dub). As Bulma's father, it is his knack for hi-tech wizardry that has been passed on to her. In Dragon Ball GT, Trunks reluctantly takes his place as the President of Capsule Corp, suggesting that he has either passed away or finally retired.Like nearly everyone on his family (with the exception of Vegeta), Dr. Brief's name is a pun on underwear (briefs)