"In the center of each astro and star of the universe exists a material that possesses an incredible power. Once you control this power, you can use and manipulate the elements and the energy of this planet according to your own will. Discovered by scientists from another solar system, those materials have been named Universe Medals..."
Wild, Juba gets angry easily and has extreme difficulty in controlling his fury.
Despite being the strongest he attacks without thinking. During his training, Juba learned how to use the Medal of Saturn and so managed the ability to create rings and control them.