|Name in Japanese||斎藤 一|
|Rōmaji Translation||Saitō Hajime|
|Appears in||Anime, Manga, TV Drama, Stage Show|
|Voice Actor (Japanese)||Takashi Matsuyama|
|Voice Actor (English)||Rob Mungle|
Hajime Saitō (斎藤 一 Saitō Hajime ) is the third unit captain of the Shinsengumi. The droopy-eyed and soft-spoken Saitō has a supernatural ability to sense ghosts, spiritual auras (which unnerves many of the other members), and is able to perceive information about future events. He has an inexplicable camaraderie with Okita. Also considered the best swordsman of the Shinsengumi at the same level of Okita Souji.
- Saitō is loosely based on the historical figure, Saitō Hajime.
- Like in real life Saitō's favourite food was soba noodles just like in the series.
- He was among the strongest swordsmen of the Shinsengumi like Okita Souji and Nagakura Shinpachi.
- Also a mysterious member in real life like in the series.