Goromi emerges as a cat-like Yo-kai from "Yo-kai Gakuen Y: N to no Sōgū". Her bipedal feline form sports a yellow body, dark gray claws on hands and feet, and golden yellow eyes accentuated by bold black-lined eyelashes. A light yellow, four-pointed tiger stripe marks her midsection. She accessorizes with black goggles featuring orange lenses and a spiked black collar. Her tail culminates in a unique three-digit hand firmly gripping the Goromi Shooter, an obsidian black pistol detailed with gold and a cork lodged in its barrel.

This Yo-kai presents a feisty, arrogant front, openly asserting superiority over Onryo-class spirits, yet reveals underlying care for her affiliated group. Goromi's narrative journey ignites after the resolution of the Seven Academy Mysteries, manifesting from a triangular monument within the First Y-Circle. There, she encounters Jinpei Jiba and the YSP Club members. Following a revelation about her past involving an unspecified individual, she entrusts Jinpei with her Y Medal. This act enables their fusion, transforming Jinpei into the Yo-kai Hero "Wild Boy" to battle the encroaching Black Army.

Her interactions frequently spark conflict, notably with Wampus, including an incident where she shot his head with her cork gun, triggering retaliation. Goromi's origin traces to the fragmentation of Mikettio into three entities after an alien invasion of the Yo-kai World, with Lord Enma dispatching these entities to Y-Circle monuments.

Beyond this tale, Goromi features as a Rank SSS Yo-kai of the Mysterious Tribe in "Yo-kai Watch: Wibble Wobble" and a Rank A Water-attribute Yo-kai in "Yo-kai Sangokushi: Kunitori Wars". Her signature weapon unleashes the Soultimate Move "Cork Impact", capable of stunning enemies.