Mean Maiden

The Mrs. Insolent is an Emblem Heartless introduced in Kingdom Hearts Unchained χ. It is the final boss in Castle of Dreams.

Kingdom Hearts Unchained χ
The Mrs. Insolent is a Heartless summoned by the darkness inside Lady Tremaine's heart. When the player and Jaq are about to free Cinderella from her bedroom, they hear her screaming. As they enter in the room, the Mrs. Insolent is about to attack the young woman. The player defends Cinderella, and is able to destroy the Heartless.