|Name in Japanese||原田 左之助|
|Rōmaji Translation||Harada Sanosuke|
|Appears in||Anime, Manga, TV Drama, Stage Show|
|Voice Actor (Japanese)||Kenji Nomura|
|Voice Actor (English)||Jason Douglas|
Sanosuke Harada (原田 左之助 Harada Sanosuke ) is the tenth unit captain and the best spear fighter in the Shinsengumi. Sanosuke is best friends with Shinpachi Nagakura and Heisuke Tōdō, forming a trio known as "The Three Comedians", whose chief hobby seems to be annoying Tetsunosuke. He has a scar on his stomach from a failed seppuku attempt and is very proud of it.
- Sanosuke is loosely based on the historical figure, Harada Sanosuke.