Rimahinó is one of the primal beings of the He world, belonging to the class of ancestral anacondas whose river journeys underlie the origin of the Barasana descent groups. Named in the myth cycle alongside Meni and the other serpent ancestors, it stands within the dense company of anaconda beings through whom the emergence of humanity is told. The sources record the name among the ancestral figures without fixing a single stable role for it, and this openness is characteristic of a mythology in which the serpent ancestors shade into one another and are ranked and recombined differently in different tellings.