2. The Little Lord
If you hadnt read the book at the time, Theon Greyjoys defection to his fathers cause and subsequent invasion of Winterfell no doubt came as a complete shock. In the space of four or five episodes, Theon went from a brother to the Starks to the unwanted captor of their home. While this event had far reaching implications in the GoT world, it was the little Lord, Bran Stark, who suffered the greatest consequences. Under siege in his own home, season 2 saw little Bran lose nearly everything he held dear and flee a sacked Winterfell with his little brother Rickon, Osha and the loveable half-giant Hodor. We lost a great character at the culmination of this storyline in season 2; when the Greyjoy force flees from Winterfell, Maester Luwin is stabbed and left for dead. But before he asks Osha to finish him quick he instructs the rag-tag bunch to head north for the Wall, to find Jon.
Obviously we know that Jon isnt there and that even if they do arrive safely they might be met by someone or something else entirely. This is much later, but in season 3 we can look forward to their long and eventful journey which is just as exciting and unpredictable as Aryas. And theres something that you dont know about Bran and Jon Snow too for that matter; some racial trait in them that is yet to be revealed in the TV show. I wont give anything away but be prepared for some thoroughly awesome revelations.