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 Majin Buu, 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.