In Assassin's Creed Odyssey, which two siblings can the player choose as the main protagonist?

In Assassin's Creed Odyssey, the player chooses either Kassandra or Alexios as the main protagonist. The siblings are descendants of Leonidas I and can each lead the same central journey through fifth-century BCE Greece.

Although the choice changes the playable character's voice, appearance and performance, the broad plot, locations and quest structure remain closely related. Kassandra is the canonical protagonist in associated franchise material, but the game itself allows either sibling to be selected.

Evie and Jacob Frye are the paired protagonists of Assassin's Creed Syndicate, while Bayek and Aya belong to Assassin's Creed Origins. Arno and Elise are characters in Unity, not selectable siblings.

Odyssey was released in 2018 and emphasizes dialogue choices, branching quests, naval travel and role-playing systems. Its historical setting is the Peloponnesian War, decades before the origins depicted in Origins.