Alvida is a notorious pirate captain in One Piece who underwent one of the most dramatic transformations in the series. Originally the overweight and intimidating captain of the Alvida Pirates, she was the first enemy Luffy ever faced. After eating the Sube Sube no Mi (Slip-Slip Fruit), her appearance changed completely, becoming a slim and beautiful woman while gaining the ability to make anything slip off her smooth skin.

Following her transformation, Alvida allied with Buggy the Clown and became a key figure in the Buggy Pirates and later Buggy's Delivery. Her vain personality and obsession with her own beauty became her defining traits, often declaring herself the most beautiful woman on the seas. Despite being an antagonist, her confident demeanor and striking appearance have made her a memorable and popular character among One Piece fans.