This Earth Prison Golem (土牢剛霊無, Dorō Gōremu) was the personal summon of Jirōbō of the Sound Four.
It is a gargantuan stone construct with huge limbs and a single eye.
As noted by Chōji Akimichi and Shikamaru Nara, the golem also possessed the ability to absorbchakra from its targets, just like its summoner. It also has the ability to regenerate from damage inflicted upon it. Due to its large, stone body, it also had great physical strength, enough to stop Kiba and Akamaru's Fang Passing Fang with its bare hands.