The Saiyan race is the most well known race other than the humans, this is because most of the main characters are Saiyans. Being apart of the Saiyan Race is bennificial, beacuase the Saiyan's are the most powerful race in the Dragonball/Z/GT Series. The Saiyans have the capibility of pushing their fighting limits and strength beyond another race. Only shown in a movie special the begging of the Saiyans Race, and their unfortant out come is revealed. The Saiyans at a time, were an unbeatable unit, living on Planet Vegeta being lead by King Vegeta. The Saiyans had a habbit of to conquer planets not of their own and were always able to suceed because of their trance formation of turning into a large ape, known as a Oozaroo. They Saiyans would have the abillity to trance when they see a full moon. The only probably about their trance is that that had no memory of what they did as an Oozaroo, except for the leader of the units that went out to fight to conquer, Bardock; father of the main character, Goku. The Saiyans made peace with a changeling creature named Frieza who told the Saiyans what planets to attack. But Frieza soon feared the increasing power of Saiyans and backstabbed them by destroying thier planet and all the Saiyans possible. The Goku, son of Bardock survived and was sent by his father before he died to Earth. Others that survived Raditz, Vegeta, and Nappa all came to Earth to take it over but Goku was an exception and fought away them all. Though Vegeta over a long time was changed by his habbits of conquering to becoming a protector of Earth with Goku. The two Saiyans left, Goku and Vegeta (Pure Saiyans)ended up having children which meant their children were half Saiyan/ half Human and from then on the whole Saiyan population was no longer conquers but helped the people of Earth.