@rachel Possibly Aslan — if Aslan is going to be voiced by a male actor after all (that's one of the rumours where we simply do not know the truth and can't judge it till we do) — or maybe the voice of Fledge. Or even possibly Digory as the Professor at the end, if he's going to get a cameo so that we can understand that Digory grew up to be the Professor we meet in LWW. Or else, well, there's already some evidence that new characters have been invented for this adaptation, as we've already heard of a "Mr Potts" being in it and there's been speculation about who he might be.

I'm mainly alluding, only half jokingly, to the fact that everything we've seen so far points to this movie being VERY different from the book it's supposed to be based on. So that's why I said, I wouldn't be surprised if the differences get so outlandish that some major characters or scenes aren't in it at all, or are so changed as to not really be recognisable. I'm exaggerating the possibilities there a bit for fun, but it's rather dark humour, because the only thing that seems absolutely certain about this adaptation is that we should expect the unexpected.