Quote Originally Posted by chionophile View Post
I'm not gonna bother spoilering this - Lucrezia has been confirmed to be the other on the cast pages as well. I don't think it's really up for debate any more. Of course, there's more to it than that; Klaus said at one point that the Other's creations were more advanced than anything Lucrezia had ever made.
The cast page says that Lucrezia is The Other, but it also has separate entries for the two. So things aren't so simple even when they are spelled out in black and white.