Butanawai (Atayal language: Butanawai/Putauatsui) is an ancestor in Atayal mythology in Taiwan. He became rainbow after his death.[1]
In ancient days, there was a hero called Butanawai, who treated his tribe fairly, and the people of his tribe saw him as god.[2] When he was dying, he told his tribe that he would become the Red spirit, and he would appear with Sessappo, the Blue spirit, in the sky, guarding the descendants.[3] If there is a sound appearing with the rainbow, that is the call from Butanawai.