#1 Unlike typical heroes, Goku's pure heart and childlike innocence set him apart. He fights not for glory or revenge, but for the pure joy of becoming stronger.
#3 While others seek to destroy enemies, Goku often shows mercy and tries to redeem his opponents. This turned former foes like Vegeta into powerful allies.
#4 His dedication to training never wavers. Even in peacetime, Goku continues pushing his limits, from learning Instant Transmission to mastering Ultra Instinct.