Hailing from the Rabitta tribe, Mokuku has accompanied Kautz since Kautz’s time in his home village, maintaining this companionship beyond the village as they journey onward. Mokuku wears an apron bearing a distinct symbol that sets them apart from fellow Rabitta tribe members. The character possesses light brown hair and black eyes. Gender remains unspecified. Mokuku appears in the first season of the anime within the episode titled "My Neighbor Mokuku."