(Keep in mind that AZUL is Mexican and speaks fluent Spanish. Again, there will be Spanish lines within the series.)

AZUL, despite trying to go for a confident, cool guy persona, is very cowardly and shy in reality.  He shows this awkwardness through his (attempts at being) flirtatious with people which can come off as incredibly flimsy when it comes to relationship. Because of this, he tends to be the butt of the joke or the first person to accuse when something is amiss within PRIMER ARMS. Despite all of that though, he takes this in stride and feels secure within the group as their guy to turn to when they're in a fight.  

His voice is smooth and cool when he tries to flirt but is incredibly awkward in other times. Often times, if you're able to bounce the conversation back to him, his genuinely shy attitude starts to appear. Unlike others, he's the kind to really beat around the bush or keep his complaints silent.