There is a romour that if you meet Rockhopper,in Canada,he will give you a SPECIAL code for a background for uses on your penguin account.The background looks like Rockhopper with his arms around a penguin called Bombade the blue penguin. Also,if you have recently had a look at the new penguin style you can unlock some exclusive items.If you click on some items in the book it will come up with a exclusive item it is very rare penguins can find them.