Rio

Rio is a resident of Samba Island who asked the Straw Hat Pirates to save her island from Chameleone.

Appearance
Rio is a slim girl with long brown hair that she ties up in the back and bangs in the front. She wears a red crop top with puffy short sleeves and a square collar, a flowy purple skirt, and pointed orange heels.

Personality
Rio is forward and persuasive, asking the Straw Hat Pirates just after meeting them to help save her island and using the island's delicacy, Samba Meat, to convince Luffy.

Brother
Rio is close with her brother and cares deeply about him. She was distraught when Kizaru shot him with a beam of light after he voiced his desire to stop Chameleone. She was overjoyed to be reunited with her brother after Chameleone's defeat.

Past
Rio and the rest of Samba Island's people lived in fear after Chameleone took over Samba Island.

One Piece Premier Show 2012
Rio and her brother were together talking about how much they looked forward to their island's annual Samba Festival when they noticed Chameleone from a distance. After he left their sight, Rio's brother voiced his desire to challenge Chameleone and save the island. Rio watched in horror as Marine Admiral Kizaru shot him with a beam of light from afar and her brother fell into the water below them before running off.

After the Straw Hat Pirates arrived on Samba Island, Rio approached them and told them about their annual festival's acrobatics tournament, the prize for which was Samba Beef. Dropping the rosy, welcoming act, Rio revealed that Chameleone had taken over the island and asked for the crew's help, which they agreed to.

When Chameleone disguised himself as Luffy and tried to defeat the crew from the inside, Rio witnessed the entire event and learned of Chameleone's scheme. Luffy and Marco defeated Chameleone, and Rio was reunited with her brother.

Trivia

 * The word "rio" is Portuguese for "river." It is also part of the city name Rio de Janiero, a city known for its yearly Rio Carnival festival, which features the Brazilian dance genre Samba.