Four
Speaking of swordsmen, Zoro comes with his own quirks and idiosyncrasies as well.
The stereotypical lazy drunkard, when not involved in some fight for honor or power, his one and only love would appear to be drinks of the alcoholic persuasion. Sarcastic and ill-tempered, especially in relation to one particular chef, he is not the most pleasant of pirates.
He will sleep at the most inconvenient times, without a thought for custom or convention. He is rude and overall lacking in manners or finesse, but it does not stop him from beating anyone who would tell him as much within millimeters of their life.
For all that he is a lazy alcoholic, he is the oldest member of the Strawhat Crew, and his understanding of Luffy surpasses the bounds of understanding. His unfaulted loyalty to the captain is admirable, and after one particular run-in with a certain Marine Admiral, he will forever have the respect of every one of his crewmates.