Ging and Mito's Grandmother

Mito's grandmother is a clement elderly woman who lives on Whale Island, first appearing in chapter 1 and later reappearing in chapter 65 of the manga. She is also Gon's great-grandmother. After Gon and Killua return to Whale Island from the Heavens Arena to visit Mito, she tells him about the deaths of Mito's parents and Ging's father. According to her, Ging wanted her to take care of baby Gon for a while but before she could say 'Yes,' Mito shouted that she would not allow Gon to be in Ging's care and later took the guardianship of Gon away from him.