Samurai (サムライ or (さむらい) ?) are cyborg warriors with advanced, completely artificial bodies that grant them power beyond that of normal humans. Their duty is to protect the galaxy. According to the Ronin, Samurai are chosen by Fudo Myo-o for being the most elite of Bushi and given their cyborg bodies as a result. However, one does not need to be a Bushi to become a Samurai, as evidenced by Hachimaru, who was not a Bushi, becoming a Samurai.[1]


Samurai schematic

Samurai schematic


To become a Samurai, a crystal star left behind by Fudo Myo-o — is needed. In the Ball Sector of space, these crystal take the form of Locker Balls, while the Cube Sector has Locker Cubes. The Locker item in question normally has a small blade in it. If a sufficiently courageous individual uses this blade to commit seppuku, there's a chance their body will transform into a Key ( (キー) ?), a memory unit that resembles a spine and forms the base of their new cybernetic body and a Soul ( (たましい) Tamashii?), a orb of energy which are spontaneously assembled from the Locker Ball.[2]

Abilities and Powers

General Abilities

  • Metamorphosis: Using the Locker Ball's Program Power, a Samurai has a limited degree of control over the molecules that form matter and the gravity H-Particles emit. When applied, it can reshape matter and gravity at will. This allows for the use of generic samurai abilities.
  • Gravity Sense: Samurai can sense the gravity of other individuals.
  • Healing Factor: A Samurai's cybernetic body is endowed with miraculous regenerative powers, allowing them to rapidly heal nearly any injury, though certain techniques and weapons may impede this process. This allows them to perform feats such as reattaching severed limbs or regrowing them outright. They can also exist in otherwise dangerous environments, including the vacuum of space. It's been noted that the speed of regeneration is not uniform, so Samurai heal at different rates.[3][4][5]
  • Immortality: Samurai are immortal so long as they retain the will to fight, allowing them to survive otherwise fatal injuries and continue to do battle. However, should their courage falter and they accept defeat, the warrior god Fudo Myo-o will forsake them and they will succumb to their injuries, with their body quickly dispersing back into a Locker Ball.[6][7]

Samurai Key

The Samurai Key is what replaces the spinal cord of a Samurai. It acts as a data storage device and as a holder for the different Key Licenses that Samurai’s use.

Samurai Soul

  • Samurai Soul Blade: The Samurai Soul when fused with a Handle Bone from a Holder - can turn into an energy blade stronger than any metal blade.
  • Incarnation Body ( () (しょう) (りん) (しん) Jishōrinshin?): Adept Samurai are able to temporarily conjure a Samurai Form ( (さむらい) (ぶん) (しん) Samurai no Bunshin?) using their samurai soul by stabilizing the density of their H-Particles to a value close to zero. They can project this Incarnation Body through space to traverse tremendous distances and engage in combat without risking damage to their actual physical form.[8] There are different types of Incarnation Bodies. The only known is the Clandestine Type ( (おん) (みつ) タイプ Onmitsu Taipu?, Lit. Spy/Detective Type).

Holder Control

Known Samurai


  • In Japanese folklore, the soul is located in the stomach area, which is why the act of seppuku involved cutting the belly. This could be the reason why the Samurai Soul is located near the stomach.
  • Most samurai train in the style of one of five schools: the Kongo-Yasha, Ususuma, Gozanze, Daiitoku, and Gundari styles.


  1. Samurai Eight: Hachimaruden Manga; Chapter 1, page 28-29
  2. Samurai Eight: Hachimaruden Manga; Chapter 1, page 28-29
  3. Samurai Eight: Hachimaruden Manga; Chapter 1, page 30-31
  4. Samurai Eight: Hachimaruden Manga; Chapter 11, page 8
  5. Samurai Eight: Hachimaruden Manga; Chapter 20, page 4
  6. Samurai Eight: Hachimaruden Manga; Chapter 10, page 10-11
  7. Samurai Eight: Hachimaruden Manga; Chapter 12
  8. Samurai Eight: Hachimaruden Manga; Chapter 8, page 2-3

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