Son Goku, born Kakarot, is the main protagonist of the Dragon Ball series and a Saiyan raised on Earth. Kakarot was originally sent to Earth as an infant and was adopted by Grandpa Gohan, who named him Son Goku.
A childhood head injury alters Goku’s memory, freeing him from his destructive nature and allowing him to grow up to become one of Earth’s greatest defenders. He is constantly striving and training to be the greatest warrior possible, which has saved the Earth and the universe numerous times.