Uh oh! Looks like trouble is brewing in Storybrooke as two new villains of Once Upon a Time are set to return. The Boy Who Wouldn't Grow Up, Peter Pan and Cora The Queen of Hearts are set to return in the 100th episode of the show. It's unclear as of yet if they're merely going to appear in flashbacks or if we're going to see them actually return. It will be interesting to see since Cora, played by Barbara Hershey, was killed by Snow White to save Rumple, and Peter Pan, played by Robbie Kay, was killed by his own son. It's going to be one heck of a ride to bring back these two! Storybrooke better buckle up and lockdown if these two come back to the land of the living.