Koala

Koala is a significant character in the Japanese manga series *One Piece*. She was once a slave of the Celestial Dragons but was later liberated by Fisher Tiger. Afterward, she sailed with the Sun Pirates to her hometown. After joining the Revolutionary Army, Koala became the assistant instructor of Fish-Man Karate, often working alongside Sabo and Hack. She first appeared in a flashback during the Fishman Island Arc and later reappeared in the Dressrosa Arc. As a child, Koala suppressed her emotions due to her experiences as a slave, but her time with the Sun Pirates helped her regain her smile and see them as family. Now, she is a mature and compassionate warrior in the Revolutionary Army, demonstrating resilience and combat prowess. She has a close relationship with Sabo, both as a comrade and as someone who is often exasperated by his impulsiveness. She is also very close to Nico Robin.