Maisie Williams on
playing Wolfsbane, including a bit about the wolf effects:
"We had like 3 weeks before shooting to figure that out, during which with a lot of prosthetics meetings and we tried on fingernails and teeth and facial hair and fur and bodysuits and all sorts of crazy stuff and they ultimately decided that they're going to do most of it in post, but, the reason why I went into all of that is because it was really interesting to see how I feel and how it would look before it, you know, it'll look slightly different, but it'll be nice to see what I'm going to be like, you know once she changed. Rahne really does struggle with her transformation, so just to stand and look in the mirror like I'm sure rain would have done that multiple times, and yeah, so it's nice to have felt that before, just having [motion capture] dots. When we shoot I have the fingernails and I have teeth and I have dots. So they can put just the fur in because we were struggling to make the little pieces look like fur, it was just like hair so that was important."
And hey, it's Bill Sienkiewicz drawing Maisie Williams turning into Wolfsbane! (From everything I've the movie is very heavily inspired by his run on the comic),