Trafalgar D. Water Law

Trafalgar Law is a pirate captain and doctor. He is one of eleven pirates who have been referred to as "The Eleven Supernovas" on Sabaody Archipelago whose bounties are higher than  100,000,000 when the Straw Hats arrive in the place.

Appearance
Law wears a shirt with a symbol that some believe saves similarity with Donquixote Doflamingo's Jolly Roger and the symbol seen at the Human Auction Grove.

Abilities and Powers
Law is a doctor whose skills have earned him the nickname of "Surgeon of Death". As for his weapon, he carries a katana with a scabbard decorated with crosses from the opening to the bottom.

History
Not much is currently known about him other than the fact that he appears to be very laidback, as he was first seen sitting ontop of a crate as another pirate with a high bounty passed by, X Drake. He then asked how many did the latter slay.

Later, after Eustass Kid mentioned that he is mannerless, Law replies by flipping his middle finger up. After Monkey D. Luffy attacked one of the World Nobles, Law had a short conversation with his fellow Supernova, who was more interested in the bear in his crew than he was in any ideas of conflict. It is unknown if he is still in the auction house at this time, particularly after the usage of aura by Silvers Rayleigh to subdue everyone in there.