Nurarihyon serves as an elite figure within the Yo-kai World, specifically embodying the younger form of Zazel from fifty years before the main series. He operates under the direct command of Ancient Enma, fulfilling dual roles as the king's advisor and personal attendant. His ceremonial robes distinctly mark his status as Ancient Enma's bodyguard and aide during the Enma Tournament.

A genius magic user, Nurarihyon wields considerable power and shoulders significant responsibility within the Yo-kai hierarchy. His key duties involve protecting Ancient Enma and engaging in pivotal conflicts against antagonists who threaten the balance between worlds. This portrayal captures an earlier phase of Zazel's long-term service to the Enma lineage, preceding his later roles throughout the franchise's eras.