Giize acts as assistant to the evil witch Dana, obeying the commands of the primary antagonist Devaul. Devaul specifically tasked Giize with reawakening Dana from her dormant state in a cold region, where she existed as an ancient body. This mission formed part of Devaul's plan to capture Licca Kayama and her friends, using them as bait to lure Licca into a trap. Giize carried out this directive, transporting Dai, Tomo, and Sumire to Dana's castle to facilitate the scheme.

Following Dana's rejuvenation through the children's souls provided by Devaul, she returned to her castle within the Doll Kingdom. Giize's involvement concluded with this act. Dana proceeded independently in her attempts to consume Licca and the other children, ultimately meeting her destruction during a confrontation with the Doll Knights.