His real name is Kakarott. He discovered that from his  brother Raditz which is also the first time he learned that he is a  Saiyajin.

Not only is he a great warrior, but also a  spectacular leader. Throughout the entire series, he had inspired  many, including both of his sons, Gohan and Goten and especially  Vegeta. He is a diligent and hardworking person who would never fail  to take on new challenges. Even though he had became the most  powerful warrior in the universe by defeating Freeza, he still  strive to become better. After Future Trunks had foretold the  arrival of the cyborgs and Dr. Gero. He could have opted for the  easy path by getting to Dr. Gero before the cyborgs were created,  but he chose to challenge himself instead by preparing for their  arrival.

Goku¡¦s unfaltering spirit and confidence is  remarkable. After he forfeited the battle against Cell, no one, not  even Gohan himself had the confidence to defeat Cell. Goku was the  only one who had confidence in Gohan and followed through all the  way to the end, even after Gohan was seriously injured and lost the  will to fight. He never quits under any circumstance. Even after  everyone gave up, his mind never stopped looking for solutions.  Seconds before Cell was about to explode and destroy Earth, Goku  realized he could teleport Cell to another location.

His  leadership and inspiration was proved pivotal as Future Trunks  unveiled the grim story of his time where Goku died of a rare heart  disease and everyone except for Trunks were killed. The most tragic  of all was that Gohan¡¦s tremendous talent was never realized as he  died under the hands of #17.

After the Dragon Ball Warriors  initial encounter with #17 and #18 and subsequently Cell, Goku  realized that he must transcend the Super Saiyajin to stand a chance  against the cyborgs. Under his guidance, an intensive training  program in the "Time Room" was launched. During that time, he  trained Gohan for the first time and fully unleashed Gohan's  potential.
The one person he had inspired most throughout the  series was Vegeta. Vegeta entered the story as as an evil individual  who would find any means necessary to satisfy his hunger for power  who was also too proud to accept defeat. Through Goku¡¦s  inspiration, Vegeta slowly transformed into a good hearted person  who accepted himself. During Goku¡¦s final battle with Dämon Boo, he  openly accepted that he was no match for neither Buu nor Goku and  willing to participate in the sidelines (by gathering energy for  Goku¡¦s final strike) rather than the actual fight.