Genbu is a very tall man with long, dark hair which he wears swept back. The ends of his hair appear to stick out in wild tendrils. He has a long goatee that is tied at the end with a small piece of rope. He wears the village rope around his waist, where it holds two knives similar to the ones Kohaku uses. His features are sharp, with steep eyebrows and visible cheekbones. His neck is also much longer proportionally than most of the other villagers' necks.
Despite his grumpy portrait, all of Genbu's depictions show him as jovial. He also accepts Senku as the new Village Chief without too much discussion, but it could just be eagerness to have an excuse to party.
Genbu first appears after Senku becomes the new village chief and marries Ruri after the Grand Bout. He informs Senku that they'll be honouring his marriage through celebration, and especially seems excited at the prospect of "drinking the night away" along with Ganen and Unmo. Senku then responds with a rather blank "oh yeah?" and immediately demands a divorce, running away with several containers of alcohol and vinegar while everyone is stunned.
Later, after Senku cures Ruri and Kokuyo officially recognises him as the village chief, there's a second party where Genbu, Ganen and Unmo are shown happy to be drinking again. Genbu specifically is pouring a large amount of alcohol into Chrome's drinking bowl.
- Genbu is written using the characters for "Black" and "Tortoise", and is the name of one of the Four Symbols of the Chinese constellations.
|Male||Alabaster • Argo • Carbo • Chrome • Ganen • Genbu • Ginro • Hagane • Jasper • Kaseki • Kinro • Kokuyo • Magma • Mantle • Natri • Sagan • Sho • Soyuz • Tetsuken • Titan • Unmo|
|Female||Alumi • Azura • Beryl • Dia • En • Garnet • Kohaku • Kujaku • Namari • Ruby • Ruri • Sango • Sapphire • Shirogane • Shovel • Suika • Suzu • Turquoise|
|Unknown||Chalk • Sagara|
|Alabaster • Argo • Carbo • Chrome • Ganen • Genbu • Ginro • Hagane • Jasper • Kaseki • Kinro • Kokuyo • Magma • Mantle • Natri • Sagan • Sho • Tetsuken • Titan • Unmo|
|Alumi • Azura • Beryl • Dia • En • Garnet • Kohaku • Kujaku • Namari • Ruby • Ruri • Sango • Sapphire • Shirogane • Shovel • Suika • Suzu • Turquoise|
|Soyuz's father • Ibara • Matsukaze • Mozu • Oarashi • Soyuz|
|Amaryllis • Kirisame|