Theon Greyjoy

He is son of the Balon Greyjoy. He is shown to be arrogant, narcissistic and vain but fundamentally not malicious. When he returned to Iron Islands, he expected to receive a hero's welcome for being the only living heir of Balon Greyjoy. He was baffled and offended that he did not receive such a welcome when he landed in Pyke. In order to appear like a strong and accomplished young man, he would gloat over things in an almost ridiculous way - he gloated to Osha that he was the man who captured her, even though Robb Stark fought and captured her. Beneath his confident exterior, however, he is insecure, weak and unsure of himself. This stems particularly from his conflicted family allegiances.