Board Thread:General Discussion/@comment-24589671-20141212164111/@comment-24674051-20150316135746

I think that Hook was the obvious choice. Belle has the dagger, so he can't impersonate her. But both belle and Hook have a common shared misery, and both would like to make sure Rumple never gets the dagger back. (probably more so that anyone else). And, unfortunately, Belle is just that one trusting person who can be easily fooled. (I would say it's almost unrealistic, except that I know people that are exactly like that).

Also, of all the people available, Hook is probably the easiest for Rumple to impersonate, since they have know each other as long as they have. and Hook has that little edge of Pirate to him, making him just a touch darker than the other Heroes.