Broly is the original Super Saiyan. He has a power level of 10,000 when just a baby. When a baby, he sleeps in the same room as Goku, who's constant crying gives Broly a hatred of Goku. He is thought to be killed in Movie #8 but he travels to Earth in Movie #10 where he is killed by Son Goku, Son Gohan and Son Goten. He is the cloned in Movie #11, appearing as Bio Broly. He is able to go beyond a Super Saiyan. They called it Legendary Super Saiyan.