Gyro III is an orange machine-like alien from Mecha Planet, featuring a white body and yellow arms. As a mechanical entity, Gyro III is devoid of human emotion and values operational efficiency above all else. This focus leads Gyro III to readily involve fellow Alien Hunters in attacks if it serves their objectives.

Gyro III uses integrated weaponry for combat. Offensive capabilities include firing small missiles from the head and projecting powerful light rays from the lower body. Gyro III can also extend their hands to ensnare and immobilize opponents, following with light-based attacks while targets are restrained.

Within the Alien Hunters group, which includes Burn, Hydro, Dive, and Chop and pursues UMA (Unidentified Mysterious Animal) while exhibiting arrogance, cruelty, greed, and minimal teamwork, Gyro III coordinates attacks with fellow hunters when strategically beneficial.

During the confrontation to secure UMA, Gyro III primarily battles Cure Selene. The conflict ends with Gyro III's defeat simultaneously alongside Dive, both overcome by Cure Selene's Capricorn Selene Arrow technique.