Katherine Pryde (aka, Shadowcat) is a superhero in the fictional Marvel universe, who was created in 1980 and has been one of it's main superheroes, a B-list hero with a few comic book series who is one of the most popular B-list Marvel heroes and female characters.
Shadowcat is a mutant and long standing member of the X-Men, who is in many ways like an adopted daughter or niece to Wolverine (similar to Jubilee). She was a founding member of the British superhero team Excalibur, and has also been a member of the global intelligence agency S.H.I.E.L.D. and the spacefaring multi-species superhero team, Guardians of the Galaxy. Shadowcat has had a history with the demonic N'Garai, battling them several times and once having to face one of them alone in the Xavier Mansion. Along with Cyclops she also faced Quoggoth, the rebellious creation of Shuma-Gorath.