Egypt. The uraeus, a rearing cobra worn at the brow of the pharaoh, represents the goddess Wadjet and is a protective device: it spits fire at the king's enemies. It appears on crowns, coffins and temple cornices from the Old Kingdom onward and is among the most immediately recognisable elements of Egyptian royal iconography. Against it stands Apep, the serpent of chaos who attacks the solar barque each night and must be defeated for the sun to rise, a nightly rather than final victory, which is characteristic of Egyptian cosmology.
India. Nagas are serpent beings, often shown as cobras or as human above and serpent below, associated with water, fertility, treasure and the underworld, and they are ambivalent rather than evil. Shesha or Ananta supports Vishnu, who reclines on the coils between world-ages. Mucalinda shelters the meditating Buddha from a storm with his hood, an episode that is among the most reproduced in Buddhist sculpture. Nagas are worshipped in their own right, and Nag Panchami is a living festival.
Kundalini is the serpent power coiled at the base of the spine, which yogic practice seeks to raise through the centres to the crown. The image is genuinely attested in tantric texts, appearing in that developed form from roughly the eleventh century, and it is neither Vedic nor as old as is often claimed. Its Western popularity dates from the translations and syntheses of the late nineteenth and twentieth centuries, particularly John Woodroffe's The Serpent Power of 1919.
Mesoamerica. The feathered serpent, Quetzalcoatl among the Nahua, Kukulkan among the Maya, is one of the oldest continuously attested deities in the region, with imagery reaching back to the Olmec horizon.