Quote Originally Posted by PetPigeon View Post
I always thought she was designated a Mutate when she was captured during Genosha. The mutant Wipeout could detect no mutant powers to wipeout, but stated she wasn't human. Then later she was more amplified by Demon Magics.
She has the same DNA as Jean Grey, who is a mutant with the X-gene. Therefore Maddie is a mutant with the X-Gene. Cable inherited his mother’s powers, who had the same powers as Jean because the same DNA.