Originally Posted by DJ Kornphlake
Shadowcat has been in 3 movies.
I didnt count some cameos, including Kitty one, Charles on Origins, and other examples.
I wanted to show more or less a decent representation of the screentime of the x-men on the franchise.
Some exceptions I counted are Pyros cameo on X1 and Colossus on X2 (where he appeared a few times, had two lines and an action scene).
Pyros had a pretty decent arc on the trilogy, and Colossus had a good presentation on X2 with more stuff on X3.
Next Big X-Men Crossover
* 2017- X-Men: Age of Apocalypse
Edit: Forget about 2017:
Official announcement -> X-MEN: APOCALYPSE - MAY 27, 2016!!!!