Marco

Marco (マルコ, Maruko) is the first division captain of the Whitebeard Pirates. He first appeared as a background character in chapter 234; when Rockstar asked if anyone knew him, Marco answered "Nope, never heard of him"

It was not until 200 chapters later in chapter 434 that he was givin a name and role in the series. He appears to be a patient and calm mild-mannered man, and he look very sleepy and displayed no emotion except when he told Shanks to shut up in a loud voice. He is skinny, with a cross and crescent moon tattoo on his chest. His eyebrows are dome-shaped but at the end are curved down sharply before going a bit up, making him look creepy.

He also appeared to be fairly well knowledged and experienced with dealing with Shanks since he knew exactly what would happen to the younger crew members in his presence. He also told the members still standing afterwards not to worry about their fallen comrades as they are just unconcious.