Set, the god of power, war, desert, storm and foreign countries in ancient Egyptian mythology, is one of the Heliopolis nine pillar gods. He is the second son of Gebu and Nute, the husband of Nefertis, and the father of Anubis. He once killed his brother Osiris by plot and was later killed by his nephew Horus.

The image of Seth is usually a jackal headed human god with rectangular ears and a long curved mouth. Some people believe that this actually depicts an aardvark, or another unidentified beast. In addition to the animals mentioned above, Seth is sometimes depicted as having the head of an antelope, donkey, crocodile or hippo.

According to Herodotus, the Greek historian, Seth was the earliest god worshipped by the Berber people. Some scholars believe that Seth is Poseidon, the sea god of the Berber people. A more common nickname of Seth is "great of strength". In a pyramid text, it is explained that the power of the king is the power of Seth.
When the sun god Ra went to the underworld at night, Seth was there to guard him. Most notably, he fought with the evil dark snake Apep, who attacked Ra every night, and killed him. Later, when his brother Osiris became a much more important deity, Seth was gradually regarded as the opposite of him. Because of the myth that Seth killed Osiris in the fight, Seth began to become an evil god.
Seth is often compared with Horus. Because Horus is a god in heaven, Seth is also regarded as the god of land. The metal ores from underground are called "the bones of Saite". In 3000 BC, Seth replaced Horus as the patron saint of Pharaoh; But when the legend that Seth murdered his brother spread, Horus was replaced again.