Troides helena common in many of the localities in which it occurs, was classified as vulnerable in 1985. Helen in Greek mythology Helen was the daughter of Zeus. Cerberus or Kerberos, in Greek and Roman mythology, is a multi-headed hound which guards the gates of the Underworld. This species is protected under Wild Animals Protection Ordinance Cap 170 in Hong Kong. The common birdwing is protected in Indonesia and may also require protection in peninsular Malaya also. It is listed in Appendix II of Convention on the International Trade in Endangered Species of Wild Flora and Fauna (CITES) as are all other
Greek underworld and achieved Elysium all three times, then they were sent to the Isles of the Blessed to live in eternal paradise. Hades (Aides, Aidoneus, or Haidês), the eldest son of the Titans Cronus and Rhea; brother of Zeus, Poseidon, Hera, Demeter, and Hestia, is the Greek god of the underworld. When the three brothers divided the world between themselves, Zeus received the heavens, Poseidon the sea, and Hades the underworld; the earth itself was divided between the three. Therefore, while Hades' responsibility was in the underworld, he was allowed to have power on earth as well. However, Hades himself is