Originally Posted by The Original Bamfer
Colossus and Syrin have been in 3.
Banshee. have been in 2.
So far, we know certain numbers (only for confirmed characters) will change after TW and DoFP come out:
Quicksilver and Bishop will have 2.
Hmmm I'm not sure about those. I don't remember seeing Siryn in X3/X1 and I don't remember seeing Colossus in X1. And I'm pretty sure Banshee did not appear in the original trilogy and origins.
And for Quicksilver and Bishop, I don't think they already appeared in the previous movies (unless you think they will appear in The Wolverine). There was a mutant in X1/Origins with the ability of superspeed, but I don't think it was supposed to be Quicksilver.