We already know about Tinkerbell, Ariel, Eric, and the fugitive/lost boy (Robbie Kay-and some sources say he is PP).
I'm going to start with this one:
Kitsis: We're going to be seeing Tinker Bell and we're going to be doing a version of the Pied Piper.
Very excited about this one. I always wondered whether he would be included, as he would fit into many of plot lines, or potential plot lines such as the overarching theme of motherhood, and could fit into the notion of the Lost Boys.