Gozura hatched from a giant egg displaced by Mt. Bikkura's eruption, emerging near human civilization. His dinosaur-like frame stands 2.22 meters long, weighs 3 tons, and sports redwood-colored skin, a nose horn, a blue cap, and a tie. Innocent and friendly, he reacts to unfamiliar human experiences with wide-eyed surprise or confusion. Childlike and devoid of malice, he trembles and announces his identity when distressed, cannot lie or keep secrets, and exhibits gluttony, needle phobia, and heavy sleeping tendencies.

His abilities include consuming metal—digesting it into mechanical devices—and unintentionally destroying iron objects like cookware, tracks, or safes when hungry. He breathes harmless fire and uses his muscular tail for high jumps. After collapsing near human territory, siblings Bonta and Susuko discovered him unconscious and sheltered him. Despite frequently disrupting their lives with his appetite or mishaps, he bonded deeply with them, though his attempts to help often backfire.

During a quest to locate his family, he met Chalala—a smaller pink monster wearing a bow. Though unsuccessful in finding relatives, he befriended her and brought her to live with the siblings. Their bond deepened, with later developments implying marriage and twelve offspring. Integrating into society, Gozura navigates continuous adaptation through humorous incidents arising from his naivety and powers. He evolves into a local figure, attracting both trouble and popularity through his amicable nature.