Juga claims to be 200 years old and to be the one who created the legend of the Hakkenshi. He claims the legends to be false and are supposedly only used for manipulating the other wolves. However, Juga's claims are never confirmed by Yoshihiro Takahashi himself.
He is the older brother of Noroi.
When Gin's group enters the Underworld and kills several of Gaia’s Warriors, Juga steps in and fights Gin. He almost kills him which provokes an attack from Fūga. Fūga attacks Juga, but gets killed in the battle. Suddenly Gin raises from his “grave” and continues the fight. He then kills Juga by cutting him on the top of his head with his Zetsu Tenrō Battōga.