Mikettio is a towering humanoid Yo-kai with feline traits, his body adorned in a vibrant triad of cyan, magenta, and yellow. Red pupils burn within black sclera, framed by alabaster eyebrows, while black spots speckle his torso, limbs, and segmented tail. The latter shifts from yellow to magenta and cyan, culminating in dual sharp tips. Magenta arms bear bold stripes, and intricate markings wrap his waist, accentuating his striking form.

Once a legendary menace, Mikettio’s reign atop the villainy rankings for a century earned him imprisonment in Mugen Prison alongside Soubou. Born from the accidental fusion of Wampus, Goromi, and Bluepon, he materializes unpredictably—first during a clash with Elzemekia, where he menaces Jinpei Jiba before fracturing apart. Subsequent unstable mergers trigger violent outbursts, prompting Kuka Nanakumo to subdue him with an ancient pyramid collar.

The collar tames his ferocity via the command “Catnip for a Cat,” delivering shocks to curb aggression. Over time, Mikettio forms an unlikely bond with Jinpei, evolving from hostility to aiding in the academy festival and stage construction. His contented purrs and admission of prior solitude highlight this growth.

A master combatant, Mikettio merges with Jinpei to become the Yo-kai Hero Earth Walker. Though hinted to wield time-space manipulation, this ability remains dormant. His vulnerabilities mirror feline instincts: gentle petting soothes him, quelling his rage.

Reluctantly training with Zazel, Mikettio begrudgingly allies with Jinpei and Koma against Onryo threats. His arc shifts from feared adversary to a guarded collaborator, retaining a fierce exterior yet revealing flickers of loyalty and muted fondness for Jinpei.