Kuku  

, クク

Kuku is an orphan who grew up alongside Arua. When Ryner and Ferris arrived in the village, she was the first person willing to speak with them. After being saved by Ryner, Sui and Kuu kidnapped her with the intention of crystallizing Arua's eyes. However, they did not realize that Ryner and Ferris were the ones who had rescued Arua. Kuku was nearly killed as a hostage by Sui until Froaude intervened. Following this event, she defected to Roland along with Arua and lived in the Eris mansion.