Kassandra, renowned as the Eagle Bearer, and bestowed the title of Keeper by Aletheia, was a Spartan mercenary who operated in Greece during the Peloponnesian War. She was the daughter of Myrrine and Pythagoras, the step-daughter of Nikolaos, and the older half-sister of Alexios. Through her son Elpidios, she was also an ancestor to Aya, one of the co-founders of the Hidden Ones.

Kassandra has Brown Eyes, Brown Hair styled into One Long Side Braid and Olive Skin.