Iris

Iris (Ιρις), also known as Chrysopteron (Χρυσοπτερον), Aellopus (Αελλωπος), or Thaumantia (Θαυμαντιας), was the Greek goddess of the rainbow and the messenger of Hera. She was a daughter of Thaumas and Electra as well as a twin sister of Arce. She was usually depicted as a winged goddess holding a water pitcher or a herald's wand.

In Roman mythology, Iris was known as Arcus.