Kisa is the niece of Itchik and a Mayan. She is Riq's love interest in Curse of the Ancients. During their time together, Riq tells Kisa about the Hystorians and his mission, and when he leaves, Kisa becomes the first Hystorian in that area and promotes the cause. The later Hystorian, María, the trio meet in the book refers to Kisa as Akna, and says that Kisa was so committed to the cause that she worked for it until the day she died.