Rachel Alucard (The Rosen Princess) is a playable character, and according to official sources, the 4th main character in the BlazBlue series. She returns as a playable character in BlazBlue Cross Tag Battle.
The sole surviving heir of the noble Alucard family and a vampire who has lived for centuries, Rachel spends most of her time dill-dallying away in her dream world, the Requiem, alongside her servants Valkenheyn R. Hellsing, Nago and Gii. While seemingly aloof and arrogant, she cares for the safety and flow of the universe, observing and planning behind-the-scenes to fight the machinations of those who would do it harm. She has a vested interest in Ragna, having saved his life as a child, and views him as a powerful player in the struggles to come.
In battle, she uses her extensive powers over lightning and sorcery to dominate the battlefield, while using Nago and Gii as unfortunate yet very willing melee weapons.