ANUBIS
Once a powerful Goa'uld System Lord, Anubis was banished by the others because his actions were deemed unspeakable, even among the Goa'uld. He was believed destroyed, but managed to escape and learn the secrets of ascension. But the Ancients did not want the Goa'uld to join them on a higher plane of existence, and tried to force him to descend. They were only partially successful, and Abubis became trapped between the two planes of existence.

Because of his knowledge of the Ancients, Anubis has amassed unimaginable advanced technologies, gathering strength for hundreds of years before returning to take his revenge upon the System Lords and dominate the galaxy. With weapons and armies to rival the entire collective power of the System Lords, he poses the largest threat to ever enter their domain, as well as to hundreds of peaceful worlds that stand in the shadow of his destructive hand.

Physically, Anubis is still some form of energy, and wears a mask to keep his form intact. It appears like the liquid-like event horizon of the Stargate, akin to the Ancient's technology.

Anubis is responsible for single-handedly destroying an entire fleet of System Lord motherships with the combined powers of the Eyes, as well as annihilating the planet Abydos.

Read more about the real-life mythological figure on which this character is based at the Encyclopedia Mythica.