Iris is the goddess of rainbows and daughter of Thaumas, one of the many gods of the sea, and the ocean nymph Electra, an Oceanid. Her sisters are the Harpies, Aello, and Ocypete. She also has a twin sister, Arkhe, who served as messenger for the Titans in the first war. As the sun unites Earth and heaven, Iris links the gods to humanity. She travels with the speed of wind from one end of the world to the other, and into the depths of the sea and underworld. She is married to Zephyrus, who is the god of the west wind. Their son is Pothos. She also wields a pitcher of water originating from the River Styx. Whoever promises to tell the truth and lies, she uses it to put the liar to sleep. She was said to bear golden wings of a butterfly.