Mrs. Dismal is the mother of Murky Dismal (who she affectionately refers to as "Murkwell". Despite knowing about the trouble Murky causes in Rainbow Land. Mrs. Dismal remembers back when he was still a very sweet child. When Murky was young, he used to paint all over the house. But once he painted all over the walls she told him he had to stop. Unfortunately he took her words too far and stopped liking color altogether. She once met Rainbow Brite and thought of her as a sweet and kind girl.
- Murky has four fingers, but Mrs. Dismal has five fingers.