Zona

Zona is a quiz researcher who was born in Arabasta. She created the Grand Line Quiz ("偉大なる航路" クイズ), with questions about locations in the Grand Line, and travels to different islands to popularize it. She appears in One Piece Odyssey.

Appearance
Zona is a young girl with fair skin, and large eyes. As a child, she had pink, braided hair and wore a red checkered dress, a yellow vest, and sandals.

As an adult, her hair is down to the middle of her back, and she wears a yellow shirt with white dots and a striped green skirt.

Personality
Zona describes herself as a wondering scholar. She is very observant and is skilled at guessing where people are from. She is very knowledgeable of different climates and folklore of regions around the world, as well as of desert species. She wants people to stop fighting their wars and other conflicts to enjoy some quizzes.

One Piece Odyssey
When the Straw Hat Pirates approached her in the Sandy Oasis, Zona made a proposal to Luffy and his crew. She eagerly asked them quiz questions, including one about a poisonous spider called the Desert Strawberry.

She appears again as a fully grown adult in the Water 7 Memoria. After rescuing Usopp and Franky from CP9, the Straw Hats run into her south of Galley-La Headquarters. While not recognizing her at first, they end up responding to her questions again, though the third challenge takes a new form involving finding her based on a hint.

After the Summit War of Marineford, Zona traveled to the Marineford Town, where she prepared to ask people trivia questions. Eventually, she was approached by the Straw Hat Pirates, who were shocked at her appearance, and asked to take her quiz.

After they solved her first two difficulty levels, Zona asked them a coded location question, requiring them to travel there and find her. She then went to Oris Plaza, but was attacked by three Impel Down escapees. However, the Straw Hats found her in time, defeating the escapees and rescuing Marm.

As thanks, she gave them a large reward and told them that she was going to travel to the next island, deciding that the people of Marineford didn't want to do quizzes so soon after the war.

Zona appears again in the Dressrosa Memoria, as an older man, which Sanji is in disbelief of.

It is later revealed that the Zonas the Straw Hats have met prior are all different individuals. When the youngest Zona is kidnapped, the Straw Hats work with with the various Zonas to help find her and her kidnapper.

Trivia

 * Upon encountering her in Water 7, the Straw Hats are taken aback by her seemingly rapid aging as she was just a child back in Arabasta, though Sanji states "There are women in the world who grow from child to adult with incredible speed. It must be common in this part of the world!". However Usopp doubts the validity of Sanji's statement.