Blueno

Blueno is a fictional character in the manga and anime series One Piece, created by Eiichiro Oda. He belongs to Cipher Pol Number 9 (CP9), an elite covert-ops unit of the World Government. Blueno first appears in the Water 7/Enies Lobby story arc as a member of CP9 sent to retrieve Nico Robin, revealing the government’s infiltration of Enies Lobby and its allies.

Blueno’s primary ability is the Doa Doa no Mi (Door-Door Fruit), a Paramecia-type Devil Fruit that lets him generate and manipulate doors on any surface, enabling him to travel instantly between locations and to set up ambushes or barriers. He can use doors to cross space and approach targets from behind, and can close doors to trap opponents or create safe passages for teammates. He employs this power for reconnaissance and infiltration.

In appearance, Blueno is typically depicted wearing the standard CP9 uniform, often shown with a calm, courteous demeanor. He is portrayed as highly disciplined and loyal to the World Government, though his allegiance is tested during the organization’s covert missions against the Straw Hat Pirates and their allies.

In the broader One Piece story, Blueno serves as an example of CP9’s tactical approach to assassination and intel gathering, illustrating themes of loyalty, moral conflict, and the costs of state secrecy. He reappears in various One Piece media, including anime episodes and related adaptations.