Brook

Brook is first introduced as a skeleton inhabiting the region of Grand Line known as the Florian Triangle. He is a former member of the Rumbar Pirates, a crew of musicians who sailed Grand Line from West Blue over fifty years prior to the current time frame of the story. They were followed by the whale Laboon, who took a particular liking to Brook's peculiar afro. Promising to return after sailing the Grand Line, the crew left Laboon at the lighthouse at Reverse Mountain, stating that the Grand Line is too dangerous for such a small whale. After entering the Florian Triangle, Brook's entire crew was slaughtered by an unknown enemy. Because he ate the Yomi Yomi no Mi, a Devil Fruit that allows the user to come back to life after dying, Brook's spirit returned to Grand Line, however, he got lost due to the intense fog in the Florian Triangle. After wandering for some time, he finally found his body, which had decayed to nothing but bleached bones. Brook was returned to life as a walking, talking, pooping skeleton. Eight years before meeting the Straw Hat crew, he was captured by Gecko Moria, who stole his shadow and placed it in the body of the legendary samurai Ryuma. Because he can no longer be exposed to sunlight, a side effect of having no shadow in One Piece, Brook remains in the Florian Triangle, under the protective cover of the thick fog, until he meets the Straw Hat Pirates.

Though Brook did not appear in the story until 2007, Oda planned to include a skeleton musician in the story ever since drawing the Laboon arc in 2000.

Brook has been confirmed to be in the tenth One Piece movie, as seen in a trailer.