Son Goku

Son Goku is a mysterious Saiyan which came to earth on a pod, he is extremely strong, especially for his age. Found and raised by Grandpa Gohan until he killed him by accident, he was then raised in the school of the Turtle Hermit Way by Master Roshi, and made many friends, like Krillin, Bulma, Chi-Chi, Tienshinhan, Yamcha, Chiaotzu and many others. This is set in a time period after the 23rd Tenkaichi Budokai, in which Goku was Victorious. (this means that this is still the first dragon ball, so the original anime/manga, meaning People like Vegeta, Nappa, Raditz or anyone coming after them do not exist yet. But you are free to be them if you want :P )