Apophis is the Greek name of Apep, the Egyptian god of darkness. It is Apep who attacks Ra on the god's nightly journey through Tuat (the Underworld). Apophis' sacred animals include snakes, beetles, crayfish, lobsters, scorpions, and wolves. He was seen as the god of darkness, death, night, and the Underworld. Apep is sometimes seen as a form of the god Seth.
In art, Apophis typically appears a a serpent, sometimes being speared by another god in a boat.