|Spoiler Alert: This page contains spoilers. Read at your own risk.|
|Full Name||Kuroba Juuzou|
|Novel||Volume 8, Untouchable — The Nightmare of 2062 (Named only)|
Appearance and Personality
According Mitsugu, it was he who proposed the killing Tatsuya when he was just a baby, which was being protected by Yotsuba Eisaku giving the argument that it would be the trump card for the Yotsuba Family. 
He was one of the survivors of the Yotsuba suicide squad responsible for the slaughter in Dahan that earned the Yotsuba Family the title of Untouchables. 
He died years before timeline of the novel.