While fans of Dragon Ball often debate who the strongest human is among characters like Krillin, Yamcha, and Tien Shinhan, Akira Toriyama and Toyotarou’s Dragon Ball Super has firmly established that Master Roshi holds the prestigious title.

Despite the evident limitations of age and lack of flight capabilities, Master Roshi remains the strongest human in the Dragon Ball universe.
Firstly, in the Tournament of Power, during a test of the fighters’ abilities at a level they had never encountered before, Master Roshi delivered an outstanding performance. Notably, the comments from two deities, Whis and Beerus, highlighted Roshi’s capabilities. He had nearly mastered a technique that rivals the Ultra Instinct.

Even without extensive knowledge of this technique, Roshi displayed an impressive level of awareness that allowed him to avoid attacks that even Gods like Beerus couldn’t completely dodge. This is due to the wisdom and accumulated experience Roshi has gained over many years, where his age has become a mere advantage rather than a disadvantage.
Secondly, during battles against various opponents escaping from the Tournament of Power, all fighters faced challenges that Roshi managed to overcome with a combination of skill and perseverance. For instance, while Tien Shinhan and Krillin faced defeats, Roshi remained a pillar of strength and resilience. He even offered advice to Krillin about the dangers of underestimating his opponents, subtly emphasizing the importance of awareness and adaptability in battles.

Furthermore, Roshi’s unique “weakness” was his struggle when facing opponents who had significantly powerful abilities, which ultimately revealed his resilience and strength against overwhelming odds. He managed to overcome this weakness through strategic fighting. He cleverly maneuvered his opponents into a position where they had to work together, demonstrating tactical brilliance.
In conclusion, both the strength and abilities of Master Roshi in Dragon Ball Super unequivocally solidify his status as the strongest human in the Dragon Ball universe.