An inhabitant of the seaside Mirodo village, who recently excavated the Murasame Liger when a group of Bio Raptor zoids attacked. In a fight between Zairin and Ruuji, Zairin damaged the generator (a tree-like structure that maintains the environment around the village). With Ra-Kan and Mii, he sets of to find a mechanic who can repair the generator. He has a younger brother, and was given a telescope by his father for his journey. During his quest to find a generator mechanic Ruuji becomes embroiled in a struggle against the expansionist nation of Digald. He realizes repairing his village generator won't mean anything without peace and he suggests to Ra-Kan an organized stand against Digald. Having lived in the village his entire life, he is somewhat naïve, but also determined and possessi