Rose (ローゼ, Rōze) is an elder vampire serving Joanna.
Rose is a young looking woman with long gray hair tied in a pony tail. She wears a blue top uniform and blue piece of cloth as skirt with her right leg revealing more skin and having a snake ornament around it.
Rose deeply cares for her master and is ready to do anything for her. She got easily embarrassed when her skirt was about to fall.
While serving Joanna, she made her fight Carmilla Vanstein as Joanna considered Hanako her greatest foe. Rose easily won over Carmilla as she was stronger species of vampire. As they were going back, Hanako came challenging Joanna to a fight and easily defeated both of them.
She then helped Joanna summon MAO, so that Joanna is the one to defeat the hero and gain the demon kings favor.