Viola Donquixote is a supporting character in the anime and manga series One Piece. She is a former assassin of the Donquixote Pirates, known by the alias 'Violet,' and serves as the princess of Dressrosa. Gifted with the power of the Giro Giro no Mi (Glare-Glare Fruit), Viola can see through objects and read minds. Her role is pivotal in aiding the Straw Hat Pirates and their allies against Doflamingo, helping to free Dressrosa from tyranny and showing compassion and strength throughout the arc.