Cardinal (Underworld)

Cardinal was a supporting character in the Alicization Arc. She was the embodiment of the Cardinal System's error-checking sub-process in Underworld, manifesting as an alternate, opposing personality of Quinella when the latter merged the system with her Fluctlight. Cardinal became a separate individual when Quinella transferred a copy of her memories to a girl named Lyceris, causing the girl's Fluctlight to break and thus allowing Cardinal to assume control of the body. This resulted in the two personalities immediately engaging in combat, which eventually forced Cardinal to take refuge in th...