This study is an analysis of characters that appear in mythological picture books set in Jeju Island. The purpose is to examine how mythological characters that have been handed down for a long time are depicted in picture books aimed at children. For this purpose, seven Jeju mythology picture books were selected and the relationships and mystical abilities of the characters in the narrative were analyzed. As a result of the analysis, firstly, the grandparents who appear in Jeju mythology picture books have existed since the beginning and are expressed as gods who protect humans, and secondly, the couple is a bond made in heaven, giving birth to a new god and becoming the starting point of the narrative. Third, children of gods are born with special abilities, but ordinary humans become gods because of their strength or extreme filial piety toward their parents. Fourth, brothers and sisters grow up competing together and remain forever as gods protecting the earth. The characters in the Jeju mythology picture book, modified to fit the needs of children, were connected between stories and continued the genealogy of the gods, and it was revealed that various family forms existed in the past. And the story that begins with the Jeju language and the place where the Jeju region is described can instill pride and identity in the region in children, so it can be used as an educational medium to expand horizons about the local community in educational settings.