Osiris is an Egyptian god, usually identified as the god of the afterlife, the underworld and the dead. With Osiris, Amun-Ra is the most widely recorded of the Egyptian gods. As the chief deity of the Egyptian Empire, Amun-Ra also came to be worshipped outside Egypt, according to the testimony of ancient Greek historiographers in Libya and Nubia. As Zeus Ammon, he came to be identified with Zeus in Greece. IRIS was the goddess of the rainbow and the messenger of the Olympian gods. She was often described as the handmaiden and personal messenger of Hera. Iris was a goddess of sea and sky--her father Thaumas "the wondrous" was a marine-god, and her mother Elektra "the amber" a cloud-nymph. If you mean Ra for Re he is in ancient Egyptian religion, god of the sun and creator god.
