Goku is a sayian, sayians are the most feared creatures in the dbz universe.Goku was born on planet Vegita and his father Bardock was a low class sayian.Goku was very small at the time when his father recieved the gift to see the future.Bardock saw the destructtion of his own planet so he saw the salvation of earth and sent Goku there in a sayian space pod.Bardock told his men of his discovery but by then it was to late.Goku who was sent to earth was come upon by a man named Gohan.Gohan took care of Goku but it was a long hard job he was restless demolishing everything when he got older he fell and hit his head and loss all memory of his sayian heritage.Goku's grandfather is what Gohan called himself was very sick and died now Goku was on his on and lead to the events in Dragon Ball.Goku became an adult in Dragon Ball z and older in Dragon Ball GT.
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