A very agile boy of a race called "forest people". His clothes are made with grass. He wants to get to know various things. His weapons are handmade boomerangs. He sets out on a journey with a circus troupe to look for his father and to investigate the reason of the unusual change happened in the peaceful forest. He has the "Protector's Proof", a mysterious acorn type pendant which his father left him. Protector's Proof emits a light that calls the "Mushiking" which is a mysterious, powerful beetle to Popo's aid.
