Kai Maaka (カイマカ) is a pirate, former bounty hunter for the World Government.He is the second member to join, and third in strength in the Sprenger Pirates. Greatly interested in history and driven by a desire to see the world, he was always considered by the other World Nobles to be the black sheep of his family. He ultimately managed to fake his death and escape from Mariejois to start living his life as he wanted to. He took up the name Kai and soon discovered that he had the ability to predict Weather.During his travels he met a young man by the name of Alaude Hasegawa and following a series of events where he ended up saving his life they started travelling together.