Ra

Ra is the god of hope, life, rebirth, and the sun. He was the first king of the gods before Isis forced him to withdraw into exile and relinquish power to Osiris. Ra's being was into three different personas during the day with Khepri as the morning god, Ra as the day god, and Khnum as the evening god. Ra later reclaimed the throne of the gods after being awakened from dormancy.

Background
Ra sailed across the sky during the day and across the Land of the Dead during the night and was revered as the king of the gods. A prediction was made that a child of Nut and Geb would overthrow him and take over as king. Ra forbide Nut to have children on any of the three-hundred and sixty days of the year. Nut was determined to have her children born, and gambled with the Khons, using moonlight she had won to create five new days, in which she could then give birth; this created the Demon Days. The five children, Osiris, Isis, Horus, Set, and Nephthys were then born over the five-day period. As punishment, Ra forced Shu to be a constant barrier between the earth and the sky, and so Nut and Geb were forced apart. Despite the treatment of his mother, Set would later defend Ra from Apophis.

The prophecy came true when Isis, wishing for her husband to reign as king, tricked Ra into revealing his secret name, and forced Ra to retreat into the sky. He left his daughter, Bast to fight the beast Apophis, which she did until Julius and Ruby Kane released her.

The Red Pyramid
Although Ra remains unseen, his absence is important and Sadie believes that if they are to defeat Apophis, all the gods will need to join together, including Ra.

The Throne of Fire
Ra is first seen along with Bast and Isis in one of Sadie's dreams when she revisits the moment when Ra reveals his secret name to Isis and is forced to relinquish his power. Carter, Sadie, and Bes later found Ra in the Fourth House of the Night in the Duat. After awakening him, they found he was in demented state, because he said things like "zebras" and " sick weasel ". They understood that this was because they had only revived two of his three aspects. They made their way out of the of the twelve houses of night and revived Kephri (whom Ra stored in his mouth later), before the Carter, Sadie, Ra, and Desjardins combined forces to temporarily banish Apophis in the Duat. Bast later took Ra back up to the heavens, and Ra was recrowned as king of the gods, even though he wasn't fully healed yet. Ra keeps on repeating the words "zebra" and "weazel" which Sadie eventually figures out means Zia and Walt, which shows they have an important role.

Personality
During his reign, Ra was described as a compassionate, honorable, and wise king. He traveled through the underworld nightly to bring warmth to the dead despite the inherent danger and only punished or sacrificed others when given no alternative. As noted by several of the gods, Ra gradually became more and more senile towards the end of his rule which was what gave Isis the opportunity to dethrone him. After his long exile, his mental deterioration is such that he behaves and speaks like toddler. Despite this, it is shown that Ra is aware enough to recognize Walt's curse and Zia Rashid's destiny.

Powers and Abilities
Ra is presumable a very powerful if not the most powerful god. His power was impressive enough to command Sobek's loyalty and keep Set in line.

Relationships
Hathor was known to be one of Ra's wives and queen.

In Mythology
The chief cult center of Ra was Heliopolis (called Iun, "Pillar", in Egyptian)[1], where he was identified with the local sun-god Atum. In mythology, Ra is the king of the gods and god of the sky. To the ancient Egyptians, he represented light, warmth, and growth making him an important god and ruling over all the other gods, humans, ect. Ra was thought to travel on two solar boats called the Mandjet (the Boat of Millions of Years), or morning boat and the Mesektet, or evening boat. These boats took him on his journey through the sky and the underworld. When Ra traveled in his sun boat he was accompanied by various other deities including Sia (perception) and Hu (command) as well as Heka (magic power). Sometimes members of the Ennead helped him on his journey, including Set who overcame the serpent Apep and Mehen who defended against the monsters of the underworld. Apep, an enormous serpent tried to stop the sun boat's journey every night by consuming it or by stopping it in its tracks with a hypnotic stare. In the evening the Egyptians believed that Ra set as Atum or in the form of a ram. The Mesektet or Night boat would carry Ra through the underworld back towards the east in preparation for his rebirth at sunrise. These myths of Ra represent the sunrise as the rebirth of the sun by the sky goddess Nut, thus attributing the concept of rebirth and renewal to Ra and strengthening his role as a creator god.