The King of Ithaca and the main protagonist. He is a deeply loyal husband and father who embarks on a grueling, 20-year journey home after fighting in the Trojan War. Odysseus's transformation from a merciful and clever leader into a hardened warrior. Throughout his voyage, Odysseus is challenged by monsters, Greek gods, and the harsh choices he must make to ensure his crew's survival. These trials slowly strip away his morality, shifting his mindset from "I'll do the right thing" to realizing he must "become the monster" to protect his family.

The prince of Ithaca, the son of Odysseus and Penelope, and the student of the goddess Athena. He grows from an idealistic boy into a brave leader ready to defend his home. Telemachus mirrors his father's early optimism and enthusiasm. He trains with Athena to protect his mother from invasive suitors and shows his desire to build a great legacy like his father.

The Queen of Ithaca, the devoted wife of Odysseus, and the mother of Telemachus. Acting as Odysseus' primary motivation to return home, she uses her wits and a clever weaving trick to stall the 108 suitors trying to steal her throne until her husband can finally return. Penelope is a resilient and highly emotional anchor. Her character serves as the emotional climax of the story, particularly where she reunites with Odysseus and must decide if she can accept him despite the ruthless choices he made during the Trojan War.

The Goddess of Wisdom and Strategy, and serves as Odysseus' primary mentor. Athena first appears to teach Odysseus to harden his heart and rely on logic rather than emotion. However, their relationship becomes strained when Odysseus starts showing mercy to his enemies. This ideological split causes Athena to leave him, though she later returns to mentor his son, Telemachus, and fights the other gods to help save Odysseus.

A charismatic, cunning, and fiercely protective sorceress and minor goddess of the island of Aeaea. She transforms Odysseus' crew into pigs to protect the nymphs under her care. Circe initially welcomes Odysseus' men, offering them food, but then uses her magic to turn them into pigs. She acts out of anticipatory protectiveness to keep her nymphs safe from male intruders, based on traumatic experiences in the past. When Eurylochus (Odysseus' second-in-command) reports what happened, Odysseus ventures out alone to rescue his men. Circe tries to physically fight him, but relies heavily on magical strategy and deception since she isn't invincible in close combat. Circe attempts to seduce and kill Odysseus at his most vulnerable. However, when he pulls away and talks about his undying devotion to his wife Penelope, Circe is deeply moved. Realizing that Odysseus is honorable and means no harm, she spares his life, cures his crew of the curse, and points them in the right direction to survive their journey.

The God of Tides, the father of the cyclops Polyphemus. Driven by revenge after Odysseus blinds and spares his son, Poseidon represents the ruthless, bloodthirsty version of what Odysseus could become. Odysseus spares Polyphemus instead of killing him. Poseidon views this as weakness and disrespect, pursuing Odysseus across the seas to exact his revenge.

A lonely, possessive sea nymph and minor goddess isolated on the island of Ogygia. Exiled for supporting her father, Atlas, in the war against the Olympians, she detains Odysseus for seven years. Calypso serves as a sympathetic yet dangerous antagonist. Trapped in endless solitude, she desperately craves intimacy and connection. When Odysseus washes up on her beach, she falls in love and attempts to force him to stay as her "pet," completely disregarding his grief, agency, and yearning for his wife, Penelope.

The charismatic and flamboyant Greek god of messengers and travel. Hermes serves as a fun-loving, unconditional ally to Odysseus, providing him with vital help on his journey home. Known for his dramatic, flamboyant mannerisms and an iconic laugh.Unlike other deities who demand worship or conditions, Hermes genuinely wants to help Odysseus out of pure friendship. He helps Odysseus resist Circe's magic by gifting him the herb "Moly". He grants Odysseus a crucial bag of wind to aid his travels.

The blind prophet of Apollo who resides in the Underworld. Tiresias has the ability to see the past, present, and future running freely all at once. In his haunting waltz-style ballad, he delivers a grim prophecy to Odysseus, revealing the tragic deaths and betrayals awaiting him and his crew. His chilling foresight acts as a major turning point in the story, ultimately convincing Odysseus that he must become a "monster" to survive and return home.

The overarching antagonist. As the King of Olympus and God of Thunder, he is depicted as a ruthless and formidable figure. He forces Odysseus to commit brutal acts to maintain his iron grip on the world. He makes the controversial decision to force Odysseus to kill Hector's infant son (Astyanax) so the boy cannot grow up to seek vengeance. Zeus ultimately decides the fates of Odysseus's remaining crew, stripping away his pride and punishing the Greek hero by stranding him on Calypso's island. He is a supreme, controlling power who equates stripping Odysseus of his pride to exerting ultimate dominance.