In "One Piece", who is the girl who overcame her enslaved past and became an agent of an army to fight the corrupt government?

Koala is the girl in One Piece who overcame her enslaved past and became an agent of an army to fight the corrupt government. After being saved by Fisher Tiger and the Sun Pirates, she regained her freedom and joined the Revolutionary Army as a way to seek justice and fight against the oppressive system that enslaved her. Through her determination and strength, Koala is able to overcome her traumatic past, transforming from a victim to an agent of change, dedicating herself to fighting for the freedom and rights of others.