* Warning: this story contains spoilers.
Hayden Donnell (has memorised every word of every book and spends his evenings correcting historical innaccuracies on the Westeros Wikipedia page):
It turns out seeing most of your family and friends butchered can really change a person. Arya Stark never dreamed of knights and princes like her sister Sansa, but her curled-lip defiance in the face of those bigger and stronger than her provided comic relief in the bleak and cynical world of Westeros. A pair of beheadings, a few slit throats and some rat torture later, and she's starting to get the cold, hard look of a killer. Arya's faint smile as she inserted her old sword Needle into the neck of Polliver - the Lannister soldier who stole it from her way back in season two - would have got a lot of people cheering. The Starks were finally getting some revenge, even if it was just against a loud-mouthed nobody in an incredibly far-flung bar. But hold on a second. Getting satisfaction out of killing someone is generally thought of as pretty screwed up; even more so when you're yet to hit 13.
It could be the start of Arya becoming a darker character. Perhaps even starting to tick off more names on that death list she repeats every night. It reads: Cersei, Joffrey, Ilyn Payne, The Hound, The Mountain, Polliver. One down...
Cameron McMillan (a Thrones trainspotter who can always be relied upon for up-to-date statistics and random factoids):
It's so great to have these people back in my life: the incestuous one-armed knight, the murderous and revengeful pubescent teen (Arya would be such a good a Belieber), the slave-freeing and army-building widowed mother dealing with the harsh realities of her growing dragon triplets - sorry Ted Mosby but these people I can relate to. In a cast of thousands it can be hard to give everyone screen time but my one negative with the brilliant season opener was that my favourite character wasn't seen in Two Swords. No I'm not talking about Stannis Baratheon, the rightful King of Westoros, First of His Name, King of the Andals and the First Men, Lord of the Seven Kingdoms and Protector of the Realm. I don't mean Ser Davos Seaworth, Ramsay Snow, Yara Greyjoy, Little Finger, Varys or even Shaggydog. I mean Hodor. I've only just started reading the books but I'm pretty sure George RR Martin means for Hodor to be the real hero in the realm. Despite being a man of few words, he's the only voice of reason. He may only be the triangle in this massive orchestra that is Game of Thrones but he plays that one sound so freaking well. Looking at his stats: he's only appeared in 17 of the 31 episodes and most of them have been off the bench. Come on Benioff and Weiss: get Hodor in the game. HODOR.