Kathryn '
Kitty' Pryde, one-time youngest member of the legendary mutant team known as the
X-Men. Her power was known as Corporal Intangability, which would let her 'phase' her molecules through any solid object, effectively passing through it like a
ghost. Formerly known by the code names 'Sprite' and 'Ariel,' she later went on to be a founding member of Britain'
s premiere superhero team, Excalibur.