Katherine Anne “Kitty” Pryde made her Marvel Comics debut in Uncanny X-Men #129.
Kitty Pryde has the mutant ability to phase through objects like a ghost. She has been with the X-Men on and off since she was a teenager. Kitty’s relationship with Peter Rasputin aka Colossus added that soap opera feeling to the X-Men series in the 1980s. She was the leader of the X-Men Gold team during the Marvel Legacy era of the X-Men. Currently she is the leader of the Marauders in Jonathan Hickman’s run of X-Men.
If one issue can sum up how much of a badass she is, it would be Uncanny X-Men #143.
Kitty is alone at the X-Mansion on Christmas and has to fight and survive against an alien intruder.
She easily ranks high in my personal list of favorite X-Women.