Ravioli, a young inventor living in Inoshika Town, forges a rivalry with Kanipan after encountering him at the Robot Grand Prix. He falls instantly in love with Milk and constantly tries to win her attention, though his natural clumsiness frequently undermines his efforts. While his inventor skills rival Kanipan's, Ravioli initially lacks an official license. He is always accompanied by his large, superhumanly strong Interface Robot, BK, who communicates almost exclusively with the word "Hunga."

Ravioli possesses striking blue eyes and spiky multicolored hair blending blue and purple shades. His signature outfit consists of a pink shirt under an open, sleeveless red jacket, blue pants, black footwear, and goggles perched atop his head.

Five years later, in the second season, Ravioli exhibits significant maturity, reflected in his altered personality and voice. Having obtained his inventor's license, he officially competes in the Robot Grand Prix and adopts a more supportive role, akin to Kanipan's companion Kid. BK is replaced by a new robot, BK Mark 2. Ravioli still harbors feelings for Milk, who remains devoted to Kanipan. Aware of her unrequited love, he restrains his earlier pursuits, choosing instead to kindly watch over her.

During the Planet Sharaku crisis, Ravioli joins the effort to resolve it. In the series' conclusion, he secretly stows away aboard Kanipan's departing spacecraft as the group leaves the planet.