Personality Monkey D Luffy One Piece
Luffy's two dominant traits are his apparent lack of intelligence and his utter fearlessness. Luffy can easily be amazed by the simplest things, such as hermit crabs, and can be confused by concepts such as that by digging a hole right next to another he may be unintentionally filling the other hole. He likes monsters and will ask weird creatures to join his crew (as seen in the Thriller Bark arc, asking a talking tree to join his crew). He also has no knowledge of medicine, when Nami had a high fever he told her to eat cold food and later tried to make Roronoa Zoro better (after battling Bartholomew Kuma) by pouring sake onto him because Zoro likes sake. When attempting to think up a plan to get off of Amazon Lily, while he managed to make some logical sense of where to look, he is seen to strain himself and notes that he is going to feel sick from too much thinking.
His simple mind actually saved him against Hancock's powers because he mistook it for a "Noro Noro Beam", used by Foxy, which brought out a fear of being slowed down (though it is shown later he is simply immune to her powers, because of his pure heart). If Luffy finds something he does not understand, even if someone explained in detail, he calls it a "mystery thing"; like calling dance powder a "mystery powder". One of Luffy's running gags is asking "non-humans" such as Keimi and Brook if they can poop, in which case the answer is usually a yes. Another running gag is Luffy's slow reaction time, especially to freezing temperatures.
The same cannot be said when he is on the field of battle, though; he has been known to dodge bullets with ease. It has been stated more than once that Luffy's instinct and behavior is similar to that of a wild animal's, like when he knows who he has to fight before he even gets to the battle. Even how his fights show this as he relies on his instincts and counter attacks. This compliments the way he views the world. He is most often seen smiling, except in a fight where he is forced to use all his power (and sometimes even then). Luffy also seems to rarely change personality wise. Because he views the world in a straightforward and simple manner, he occasionally is the only person who can see past events that have taken place and realize the true goal, yet at other times he can fall into the simplest of traps.
