Juan Diaz captains Argentina's national team and leads them in scoring. He's best known for his arrogance—at least early on. He comes across as pretty conceited, though that changes after facing off against Tsubasa Ozora of Japan; the encounter humbles him somewhat.
Talent-wise, Diaz is genuinely exceptional. Scouts and analysts have pegged him as Argentina's next soccer superstar, and comparisons to Diego Maradona come up often enough that they've become part of his reputation. That Maradona connection isn't accidental—his character draws heavily from Maradona's persona and playing style.
The rivalry between Diaz and Tsubasa feels natural given how much they have in common: both are generational talents, both carry the weight of expectation, and both seem destined to define their national teams. Their rivalry is one of the story's central threads.
His name references Ramón Ángel Díaz, though casual fans usually just think of Maradona when they hear about him.
Content compiled by AnimeList.moe from publicly available sources.