Jumanieru Kito

His human form is a heavyset yet muscular man with gray-toned skin. He keeps his black hair combed flat, his black eyes closed, and a pair of glasses across his face. His outfit pairs a grayish-yellow sweater with dark gray jeans.

Following the clan's longstanding rite, Jumanieru helped his mother Naki Kito offer humans to the Tsuchinoko, appeasing the creature so the village volcano would remain dormant.

During the Cursed House Arc, he watched Jiji bring Momo and Okarun inside, then trailed Momo to the hot springs with his brothers to assault her, only for Turbo Granny's luck to crush the baths. After Officer Tsuru intervened, the men beat Jiji and Okarun unconscious, and Jumanieru fought Momo until Naki's Jennifer Lopez Anaconda threw her toward the lair. Shoved into the pit himself, he noted privately that he had never laid eyes on the Tsuchinoko before, then was swallowed with the rest of the family.

Regurgitated alive, the Kitos chased Momo as she carried the corpse to halt the lava, were blocked by Manjiro, and were hit by the Evil Eye. With the village spared, Jumanieru and his kin were taken into custody while Naki stayed hidden. In the Typhoon Human Arc, Naki freed him alongside Juhiko and Juichi, and they boarded Momo's flight to Shimane. His knife rush at Jiji ended with Seiko kicking him away, and the brawl was cut short when the plane's engine gave out. As a typhoon flung sharks into the cabin, the family rode Naki's revived Mongolian Death Worm and fired sharks back at the storm until Jiji's Evil Gun dispersed it. A giant shark then swallowed the worm and the Kitos and was kicked toward the moon, where Jumanieru leapt about marveling at his featherlight body as Naki, blaming Momo, swore renewed vengeance.

Jumanieru fights alongside his brothers as a hand-to-hand combatant, relying on the clan's shared unarmed prowess.