Marvel Comics: Katherine Anne "Kitty" Pryde aka Shadowcat

Kitty Pryde (a.k.a. Shadowcat) is a mutant gifted with the ability to become intangible and phase her entire body through solid material. A talented prodigy, she became the poster child of the X-Men; eventually reaching maturation and becoming the team's current leader. These are from the comics there are some old posts of her from the animated series.

X-Men: Laura Kinney

Laura Kinney (known by code names X-23, Talon and Wolverine) was a secret Weapon aimed at producing a genetic clone of Logan/Wolverine of the X-Men. One with all his powers and abilities with the exception they could control. However the genes broke down in-situ so instead they replicated the X- Chromosome over producing a female.