Charlotte Bathory AKA Zombie Girl.
Zombie Girl is virtually indestructible and possesses super strength and agility. She has a number of various other powers, but her real talent is in being able to open portals to other dimensions.
Although the rules of Death state that she must move on from the physical plane, she strikes a bargain with the Grim Reaper. In exchange for the freedom to remain in our world, Charlotte agrees to use her powers to help him track down the most dangerous supernatural criminals in the world and send them to the Underworld where they belong.