Jin

The last surviving full-blooded Vectorian. He is the brother of Gan and the great-grandfather of Jin Jr.

History
Jin was born at around the same time as Goten, Trunks, Viper, and Mamba. His parents aren't known, but it is known that he has a brother. When Jin and his brother were both old enough, they enlisted in the Vectorian Military Force, and were stationed on Earth. When the threat of Majin Buu rose, King Wei recalled Gan and Jin from Earth. After Earth was wished back, they were told to watch over the Saiyans that saved Earth. When the Pyrite Saiyan forces invade Earth and took Goku and Vegeta, it was Jin that informed their family and friends. After he is called back to Vector, he and his unit are the first to be deployed of the Vectorian forces.