Kassandra is the canonical protagonist of Assassin’s Creed Odyssey. The game lets players choose to control either Kassandra or Alexios, but later series material identifies Kassandra as the canon bearer of the hero’s story.
Odyssey is set in ancient Greece during the Peloponnesian War, beginning in 431 BCE. Kassandra is a Spartan misthios who becomes involved in a family conflict, the Cult of Kosmos, and the legacy of the First Civilization. Her journey spans mainland Greece and numerous Aegean islands.
The choice between Kassandra and Alexios affects the playable character and voice performance, while the broad narrative structure remains similar. Alexios is not a separate historical protagonist in the canonical version; he serves as the alternate player character and can appear as Deimos. Kassandra’s later appearance in Assassin’s Creed Valhalla establishes her long lifespan through the Staff of Hermes Trismegistus.