Kankichi Ryotsu (so Ryo-san for short) is a naval officer who was present in the Straw Hat Pirates’s battle against the naval officers of the Buster Call fleet.
Ryo-san is actually the main character of the manga KochiKame: Tokyo Beat Cops, which is better known by its short name Kochikame. On the 30th anniversary of this manga’s publication in Weekly Shōnen Jump, Ryo-san made cameo appearances in several of the magazine’s then-current manga series, including Eyeshield 21, Majin Tantei Nougami Neuro, Gintama, Bobobo-bo Bo-bobo, and One PieceIn chapter 427, on the 1st page after the cover image, he can be seen in the middle of the lowest panel (see image).
- Kankichi Ryotsu scored 100th in the 4th character popularity vote. In the fifth, he still reached 195th place.