Name: Monkey D. Luffy
Nicknames: Straw Hat Luffy, Sometimes just Straw Hat or Luffy.
Age: 17
Birthday: May 5th
Height: 172 cm (5'7ÂŊ")
Luffy is renowned for wearing his trademark Straw Hat (from which he gets his nickname 'Straw Hat Luffy') which was lent to him when he was young by the legendary pirate captain Red-Haired Shanks (He promised to give it back next time they meet). His outfit somewhat mimics Shanks' own outfit in that he wears short trousers (although his are much shorter than Shanks') and sandals. Luffy also wears a red vest and has a scar underneath his left eye and short black hair.
Luffy, for some reason, has the same outfit over most of the series, as opposed to the rest of the crew. Luffy may wear a different outfit to suit the climate of an island (like a winter coat on Drum Island or desert robes in Arabasta), but will switch back to his trademark vest and shorts after the adventures on that island are over.
Notably, in Enies Lobby he wears black shorts because they had pockets in which he could carry meat, on the Thriller Bark Island he wears an orange vest and red shorts, and on the Sabaody Archipelago he wears a blue vest, In the most recent part of the anime (prior to the separation) Luffy has been shown wearing a greenish blue vest with red shorts. He does, however, no matter where he is, wear his straw hat through absolutely everything, though at the start the hat was prone to getting knocked off his head easily forcing Luffy to either put it aside or have someone hold onto it during battles. Since then he has gotten a string strap for it, allowing the hat to hang from his neck during fights.
Eiichiro Oda has mentioned that Luffy mostly resembles a monkey (he sometimes even makes a monkey face). According to Oda, Luffy is represented by the color red, and smells like meat.