I don’t think Dr. Whale is the big bad wolf. I don’t have a name, nor do I have screenshots. But in Episode 4 (the one about Cinderella) there is a scene where Emma is questioning Ruby about the whereabouts of Ashley. There was a tow truck operator outside the dinner who dropped Ruby’s car hard on the street. THAT GUY is the wolf; they showed him only briefly.
HOWEVER, that guy has never had a speaking part in the show. So it’s might very well end up Dr. Whale. He and the tow truck guy are the two most likely.