Former retainer of the Sanada clan. Attendant to Nobushige Sanada.
Juzo originally served Nobushige as a page within the Sanada household, then followed him to Mt. Kudo even after their confinement. He later began working as a Sanada ninja, specializing in modified firearms, explosives, and gunpowder handling. Because of a debt of gratitude to the Sanada family, he always puts Nobushige first. He makes sound, rational judgments and treats women kindly.