Back when she was a human, Momo was a pole dancer in a strip club where she earns money for her family to live. She stopped studying in college and pursue to make money on dancing. One mafia leader fell in love of her and bought her like a slave, she was , tortured and starved. When she was brought in a luxurious yacht, she barely escaped when he shot her in the chest three times. Momo fell to the cold water and her body went to the shore of the Knightmare island.

A witch found her dead body and brought her to her home, making her a sacrifice to the gods and stitched up her wounded chest. When Momo is risen from the dead, her brain is already dead, not knowing who she is anymore and being an empty husk.

She eats meat and a bit friendly to some people.