“My fastball gone broke da mouth.”
“A good-humored young man who travels the world as one of Yuna’s guardians. While he always looks out for others, his dependence on the teachings of Yevon oftentimes causes him to lose sight of reality. Wakka’s biggest passion is playing for and coaching his blitzball team, the Besaid Aurochs.”
-Character Guide from Dissidia Final Fantasy : Opera Omnia
Having lost his parents from one of Sin’s attacks, Wakka raised his younger brother Chappu with help from the villagers of Besaid. Wakka grew up alongside Lulu, an orphan as well, and ended up marrying her, fathers a child. And worries about raising it.
Wakka is a skilled Blitzball player, Captain of the Besaid Aurochs. Wakka retires during the game, but you can bring him out of retirement later on in the game. The Aurochs aren’t the greatest team, far from it, and upon hearing that Tidus is a star player, he asks him to join the team.
His hate for the Al-Bhed is clearly shown throughout the game. As he is always talking down to Rikku, until he finds out that Yuna is 1/2 Al-Bhed. And after the attack on the Al-Bhed by the Guado, he changes his tune completely.