Originally Posted by TWayneP
And It makes sense if Quicksilver does show up in Avengers, he could be older, in his 40s or so,(I'm not doing exact math, just guessing) and it would work out with how McKellan is portrayed in present day, being very old. IT works out in my head...
Saoirse Ronan was said to be the basis for what they are going with Wanda in Avengers 2. Since they are twins, Id assume Quicksilver is also young in that film.