Voice Actor: Kirk Thornton (https://youtu.be/4-AW6r80peQ)

Jubei also known as Mitsuyoshi, is one of the Six Heroes and Ragna's master who battled the Black Beast alongside Hakumen. As revealed in Phase 0, he was originally named Mitsuyoshi, and did not take up the name Jubei until after the Dark War. He is a beast-man and is the father of Kokonoe. It is also revealed Taokaka and her clan were genetically engineered from his DNA. Jubei's weapon is the Nox Nyctores, Mucro Somnio: Musashi, which is a pair of kodachi blades that can cut "what cannot normally be cut."

Jubei is generally agreeable, sociable and optimistic. Whenever there is a great threat, such as Ragna or the Control Organization around, he always keeps his laid-back attitude and stays relaxed. He makes the best of every situation, and is always trying to see the good in everything.

At times, though, Jubei shows a far more jaded and bitter side. Due to many of his friends having died, Jubei shows deep-seated guilt over his inability to do anything. As such, he has felt that he is nothing more than a weak coward who runs home with his tail between his legs while leaving good people such as Hakumen and Bloodedge to their fate. 

The supposed death of his lover, Nine, and having to leave their daughter Kokonoe without a family, only wound him further. Because of those losses, however, Jubei is even more driven to do what’s right, and will use the power he has to do so.