Mihawk

Mihawk is mostly very serious. He rarely smiles, and he has only been seen laughing twice so far. He took the revelation about Luffy being Dragon's son in stride, despite the surprise of those around him. He never unnecessarily reveals emotions on the battlefield, even when something unexpected happens (such as Jozu intercepting his flying slash aimed at Whitebeard, or Luffy surviving his onslaught). As an infamous pirate, he is not someone ambitious or cruel and his only goal in life is to be outmatched by another swordsman.

He displays a sense of honor as he recognizes and respects the swordsman's code and he even reluctantly permitted Roronoa Zoro the luxury of training at his hand for his dedication and selflessness. He is also unafraid to reference his title of "Strongest Swordsman in the World" in relation to himself, indicating a high level of confidence in his own abilities. He takes pride in his swordsmanship, believing that a nick on his sword is a blemish to his pride.