Seiko Ayase is a major character in the manga and anime series Dandadan, known as a powerful spirit medium and the grandmother of protagonist Momo Ayase. She is a skilled exorcist who uses her abilities to help Momo and her friends navigate supernatural threats, often appearing as a youthful-looking woman with white hair, red glasses, and a cigarette. She also goes by the alias "Santa Dodoria" and is voiced by

Momo Ayase is the main female protagonist of the supernatural manga and anime series Dandadan, known for her strong, complex personality that blends teenage sass with a protective, empathetic nature. A high school student who believes in ghosts, she gains psychic powers after a supernatural encounter, leading her to team up with her classmate Okarun to fight paranormal threats, including aliens and yokai, while navigating her own insecurities and developing a genuine relationship with him