Set

Set, (Also spelled Seth) is the god of deserts and chaos. He is the son of Geb and Nut as well as the brother of Horus, Isis, Osiris, and Nephthys. Later, Horus would become his nephew and Nephthys would become his wife. He is the main antagonist of The Red Pyramid, but a minor supporting character in the rest of the series.

Background
Set was born on the third Demon Day( December 29th ) to Geb and Nut as their third child. In time, Set would become the most powerful servant of Ra and was chiefly responsible for defending him from Apophis. When Ra withdrew, Set was entrusted with protecting a third of the Book of Ra which would awaken him. After his rebirth, Set married his former sister, Nephthys and fathered an estranged son named Anubis with her. When Osiris became king of the gods, Set refused to stand for it and planned to kill him. During the king's birthday celebration, he trapped Osiris inside a magnificent sarcophagus and poured molten lead into it. Declaring himself ruler, he relentlessly hounded a pregnant Isis who would give birth to a reborn Horus and resurrect Osiris. Although Osiris could not be truly revived, Horus would go on to avenge his father's murder by dethroning Set.

The Red Pyramid
Set, along with his siblings, is released by Julius Kane while attempting to summon Osiris. He kidnaps Julius who has become the host for Osiris and possesses Amos Kane. He then charges the demons under his command to construct a pyramid in Phoenix, Arizona to serve as both a medium for his power and a vessel for his being. He originally intends to turn all of North America into a desert, but is manipulated by Apophis into targeting the entire world. Set is eventually subdued by Carter Kane/Horus and Sadie Kane/Isis who uses his secret name, Evil Day, against him and expose Apophis' influence to him before forcing the god into an alliance against their mutual enemy.

The Throne of Fire
Set reappears when Vladimir Menshikov summons him inside of a malachite jar. As he is forced to reveal the properties of Apophis' prison, Set notices the Kane children saying"and a magician who can't do a proper invisibility spell like carter kane over there" and alerts Menshikov to their presence with the intention of gaining freedom. When Vladimir is about to attack them, Sadie destroys the jar and frees Set who incapacitates the rogue magician and allows the siblings to escape as thanks.

After the Tjesu heru poisons Carter, he helps Sadie get her brother back to safety with Bes and also gives her the location of the last part of The Book of Ra in exchange for his secret name. Sadie agrees to this but makes the god swear to a truce with her family before the exchange. Set is later seen when Ra retakes the divine throne.

Personality
Set is arrogant, cunning, cruel, manipulative, and enjoys toying with his enemies often for his own personal entertainment. Sadie described him as being ruthless, and cruel, to which he sarcastically replies, "You make me blush, Sister." Throughout the book he has shown a sense of humor; he is, however, hinted to have an honorable side to him. His first concern is always himself and is willing to submit to his enemies if it is in his best interest.

Appearance
Set has multiple forms due to shape-shifting capabilities, and has appeared in several ways, but always contains some form of the color red, throughout the series.

The first form he was seen in was that of the fiery outline of a man; a head of a Set animal sometimes appears on this form or an almost human face with pale skin, cruel, angular features, and glowing red eyes. Throughout the Red Pyramid, he appeared as a tall and strong, almost a twin to Osiris, but with dark red skin, a pointed beard, long black hair, and red eyes. His face sometimes flicker between that of a human and the Set animal.

He sometimes wears blood-colored robes, red combat fatigues, fiery armor, or a red silk suit.

His true form in the Duat, however is, as Sadie describes it, a mountain of sand, doused with petrol, set on fire, spinning in the world's largest blender.

Powers and Abilities
After Ra and Apophis, Set is the strongest of the gods. His physical abilities led to become Ra's second-in-command. He speacilizes in making storms and creating hurricanes. His domain is in the desert where he is im-possible to defeat.

Relationships
Nephthys: Despite their marriage, the two do not seem to trust one another. Although she does seem to love him, Nephthys knows that Set is dangerous and aids in the battle against him. However, it is hinted that Set does love her, as when she betrays Set to let Isis escape, he doesn't harm her. Also Set has told Nephthys his True Name showing some evidence of love. She also gave away their only son, Anubis, claiming that she did not want him to meet his father.

Osiris: Set seems to hold a hatred for Osiris, possibly because Osiris replaced Ra as the king of the gods. Set has made many spiteful actions against Osiris and seems to actively attempt to cause him suffering.

Ra: Set was said to have been Ra's lieutenant, indicating that he was fiercely loyal to him (in fact some myth states that he was the only god that helped Ra through the centuries against Apophis). This loyalty would add to Set's hatred for Osiris.

Anubis: Anubis, despite being Set's son, has never actually met him. He is reluctant to admit to Sadie that Set is his father, but helps defeating him by giving them the Feather of Truth to save Osiris, the only family he ever had. Anubis also displays signs of dislike toward him. In "The Serpent's Shadow" Anubis says "Shut up Father" while rescuing Sadie Kane from Kwai and Sarah Jacobi.

In Mythology
Set was originally a major god of Upper Egypt. He was viewed as a benevolent god and protector, though he has a long history of feuding with Horus. When Upper and Lower Egypt merged, the followers of Horus gained power and increasingly demonized Set. He went from being a chief god, to Ra's protector, to being merged with Apophis. Despite this, he was still in some areas a major god and has had several revivals.

Trivia

 * Set says he wishes his secret name was something else, such as "Rockin' Red Reaper" or "Glorious Day".
 * Set's blood is black, as shown when Carter stabs him.
 * His Greek equivalent is Typhon.