Eighteen-year-old Cleopatra ascends to the throne as Egypt's pharaoh following her father's passing. Though she bears the mark of the goddess Isis on her neck, she lacks a supernatural gift. This deficit forces her to rely on intellect, theatricality, and medical study to secure her position. She works to enact systemic reforms, improve trade, and build a temple to Isis to reinforce her legitimacy against mounting opposition.

Marcus Antonius is a passionate, charismatic Roman general and Julius Caesar's second-in-command. He aligns himself with the god Dionysus and embraces pleasure and grand emotional displays, contrasting with the pragmatic nature of his peers. His overwhelming devotion and loyalty dictate his political decisions and military campaigns.

Julius Caesar is a brilliant, pragmatic Roman general who brings the military might of Rome to Egypt's shores. He negotiates a strategic alliance with Cleopatra to secure repayment for her father's debts. He respects intelligence and treats his allies as equals. He provides crucial support during the Egyptian civil conflict.

Arsinoe is Cleopatra's fourteen-year-old sister, gifted by the god Thoth with the ability to understand and command birds through her ibis, Qar. A desperate need for recognition and deep-seated jealousy of her older sister drive her actions. She relies on overt aggression and espionage to assert her power within the Ptolemaic court.

Charmion is Cleopatra's handmaiden, confidante, and lifelong companion. She shares a private Arabic language with the queen and provides emotional grounding against the isolation of the throne. She is pragmatic, fiercely loyal, and willing to risk her own safety to protect the queen.

Octavian is Julius Caesar's adopted great-nephew and the formal heir to his legacy. He operates primarily from Rome and consolidates his power through a relentless propaganda war against Cleopatra, framing her as an exotic threat to the Republic. He represents the encroaching military and political might of the Roman Empire.

Pothinus is a eunuch who serves as regent and tutor to the young Ptolemy XIII. He views Cleopatra as a direct threat to his influence over the boy king. To maintain his grip on power, he orchestrates campaigns of rumor and political sabotage, leveraging misogynistic rhetoric to brand the queen as weak and unworthy.

Known as Mikro Theos, Ptolemy XIII is Cleopatra's younger brother and designated co-ruler. The crocodile god Sobek blessed him with the ability to breathe underwater. Despite this power, he desperately wants to be viewed as a legitimate king rather than a child, a desire that makes him highly susceptible to the manipulations of his advisors.

The youngest of the Ptolemy siblings, he bears a divine mark from the god Anubis that grants him the ability to foretell a person's death on the day it occurs. He exists on the periphery of the fierce power struggles defining his older siblings' lives.

Caesarion, officially named Ptolemy Philopator Philometor Caesar, is the firstborn son of Cleopatra and Julius Caesar. As the heir to both Egypt and a Roman lineage, his existence presents a massive political complication.

Ahmose serves as the head of Cleopatra's royal guard. He demonstrates unyielding loyalty to the queen, aiding her in covert movements through the city and defending her against immediate physical threats.

Apollodorus is a fever-stricken weaver whom Cleopatra treats in secret. He later recognizes the queen in her moment of need and risks his own life to smuggle her past hostile forces into the royal palace.

Archibios is a dedicated scholar and librarian from Damascus who works in the Library of Alexandria. He assists Cleopatra in researching botanical medicines and overseeing the construction of royal hospitals.

Neferu is Cleopatra's maternal aunt and a high priestess. She provides the queen with crucial physical evidence of treason within the court by presenting a newly minted, altered coin.

Serapion is a regional governor with secret sympathies for Cleopatra's exiled sister. He attempts to publicly humiliate the queen by challenging her to perform a divine healing miracle at a royal banquet.

Faunus serves as a trusted administrator in Cleopatra's court, relaying military updates and assisting in the governance of Alexandria during the queen's absences.