Kyoko is somewhat of the MVP of PMMM. When she was young, Kyoko was raised in a very dirt broke family. After encountering Kyubey for the first time, Kyoko wished that everyone would listen to what her dad would say, so that her family's church would become more successful and well-known. In a flash, she became a magical girl! However, Kyoko's dad went bonkers, and set fire to his family's church. Since then, Kyoko became a ravenous beast who fights for herself.

Upon hearing about Sayaka, she (after hearing Kyubey said) decides to kill the blue haired magical girl and take her turf for herself. However, when she's faced with Sayaka becoming Oktavia, she decides to put aside her beastly attitude and become a much friendlier person, with Rebellion showing that she and Sayaka (who was resurrected for the sake of plot) are the best of friends!