Suffering from a dual personality disorder since birth, Typhoid Mary has never been what one would call a stable girl. Mary is extremely reckless and dangerous when she falls into her Typhoid persona. Often steering her activities in a more criminal direction. As Typhoid Mary, she possesses low level telekinetic, pyrotechnic and psychic suggestive abilities. In the past, Mary has allied herself with the notorious crimelord Kingpin, but now she spends her days with numerous other criminals in the super-human prison known as the Vault!