Kitty Pride aka Shadow Cat had a small background role in the first installment of the X-Men franchise. She was first played by Sumela Kay and like I said before is just a background character.
In the second installment Kitty is played by Katie Stuart and has a slightly larger part where we actually get to see her power of fazing through objects,
In the third installment we finally get to Ellen Page who is the only actress to play Kitty consecutively. She is a more prominent character in the movie. We get to see her be a part of the X-Men team and help them fight against the Brother Hood. She interacts a lot more with the other characters and he role looks very promising, despite the chaos in the rest of the movie.
The most recent appearance of Kitty was in X-Men: Days of Future Past. She was the one to send Wolverine's consciousness into the past to change it and reboot the franchise.
Unfortunately this means we more than likely see Ellen in the Kitty Pride role any longer. But there is always hope that she may make a cameo somewhere along the way. Until then, have a great week everyone!
Rachel Dawes is the childhood friend/love interest of Bruce Wayne. She is introduced in Batman Begins, directed by Christopher Nolan, and is played by Katie Holmes. She is a lawyer and Bruce's last connection to humanity. She learns that he is Batman and doesn't want the responsibility of keeping him grounded.
In the second installment of the Nolan trilogy, The Dark Knight, Rachel is played by Maggie Gyllenhaal. She's still one of the best lawyers in Gotham and is helping Harvey Dent aka Two-Face bring major crime bosses to justice. She still isn't interested in being Bruce Wayne's crutch (even though Bruce somehow think she'll wait for him...how and why???) But, like all good things, Rachel must come to an end.
It's unclear where, or if, we will see Rachel next, Maybe or maybe not Gotham (TV). But don't let that stop all of you from having a good week!