Cassandra is a mysterious figure that was originally unleashed when the group unlocked the vault within Wave Echo Cave. She warned the group that their actions have now started a chain of events before disappearing.
She then appeared within the Synergy Group - seemingly as a prisoner but the practicalities were mostly for show. Her prescence is rather unnerving for most people. Her voice is high and unnatural and no one has seen the top part of her face. No one has seen her eat, sleep or other usual functions.
She speaks mostly in vague notions and people have concluded she is some sort of mage but it is very unclear what kind she is, how old she is, where she really came from and why she is even there. Asking these questions will often result in more questions being asked and a frustrating headache.
It was revealed by the Seer Mal that she was secretly working against the Synergy Group. After unleashing a rakshasha ghost on the group, she has fled and her whereabouts are unknown. She is dangerous and her motives - aside from reanimating Lethe - are unknown.