Eustass D. Sid (ユースタス・D・指導, Yūsutasu D. Shidō) is a young pirate from Gosa Village in the Konomi Islands who is on a quest to find out the truth behind his family's death. The captain of the White Scarf Pirates, he aims to follow in the footsteps of two other pirates to have started their journeys in the East Blue, Monkey D. Luffy and his brother Portgas D. Ace. Due to the trademark white scarf he is always seen wearing, he has earned the epithet of White Scarf Sid (白いスカーフの指導, Shiroi Sukāfu no Shidō).