The Kúwaiwa are the primordial ancestors of Cubeo cosmogony, the plural extension of Kúwai and, for the Hehénewa, the true makers and orderers of the world. Brought forth by Kúwai's thought, they arranged the cosmos and nature and completed the cultural inheritance of the Pamíwa. It is they who left behind the ancestral flutes and trumpets, which are not simply emblems of the ancestors but their very presence, sounded at initiation and at mourning. Tradition distinguishes two orders among them: the seniors, from whom all good things proceed, and the juniors, from whom come all harmful things. The first marriage of the mythic age joined the Kúwaiwa to the Anaconda beings, an act set in motion by the death-spirit Mavíchikori, and from that union descend the sibs of the Cubeo. Neighbouring Tukanoan peoples equate the Kúwaiwa with the He masa, the ancestral beings of the beginning.