Kitty PrydeA mutant, Pryde possesses a "phasing" ability that allows her and objects or people with which she is in contact to become intangible. This power also disrupts any electrical field she passes through, and lets her simulate levitation.
Kitty is a mutant with the ability to pass through solid matter by passing her atomic particles through the spaces between the atoms of the object through which she is moving. In this way she and the object through which she is passing can temporarily merge without interacting, and each is unharmed when Shadowcat has finished passing through the object. This process is called "phasing" or quantum tunneling and it renders her almost completely intangible to physical touch.
In the X-Men film series, Kitty Pryde was portrayed by young actresses in cameos in the first two films, Sumela Kay in X-Men (2000) and Katie Stuart in X2 (2003), and is portrayed by Ellen Page in X-Men: The Last Stand (2006) and X-Men: Days of Future Past (2014).