User blog comment:Gcheung28/Game of Thrones Season 4 Fan Brain/@comment-5014364-20140414170003

For "The Lion and the Rose":


 * Tommen Baratheon has been recast in Season 4: He is now played by Dean-Charles Chapman, replacing Callum Wharry. Chapman formerly played Martyn Lannister in Season 3 - though given that Martyn is Tommen's first cousin, they would logically have similar appearances.
 * Wharry appeared as Tommen in Season 1 but had no speaking lines; he returned in Season 2 and actually did have speaking lines with Cersei in two short scenes, but afterwards the character did not appear for all of Season 3.
 * Podrick directly asks Jaime if his new prosthetic hand is made of solid gold, and is told that it is actually gold-plated steel. In the books, Jaime's prosthetic hand is indeed made out of solid gold. It makes an effective bludgeoning instrument.
 * In the books, both Jaime and Brienne only returned to King's Landing immediately after Joffrey died, so any of their scenes in the past two episodes were inventions of the TV show (though George R.R. Martin did write this episode)
 * Jaime's reason for training with Bronn is because he wants a partner who can be trusted not to tell anyone that he can no longer defend himself, and he accomplishes this by paying Bronn extra to remain silent. In the books, Jaime chose to train with Ser Ilyn Payne - whose tongue was torn out by its roots years ago at the order of the Mad King. Actor Wilko Johnson, who played Ser Ilyn in Seasons 1 and 2, developed terminal pancreatic cancer during Season 2 and withdrew from acting - explaining why Ser Ilyn's interaction with Jaime was shifted to Bronn.
 * Oberyn Martell mentions that Cersei's daughter Myrcella Baratheon is still in Dorne, as a glorified political hostage. The proposed marriage-alliance for Myrcella was set up two full seasons ago in Season 2's "What is Dead May Never Die", and she left for Dorne three episodes later.  Myrcella is betrothed to Oberyn's nephew Trystane.
 * The dwarfs ride trained pigs in the books; the TV producers wanted to do this, but due to issues of animal cruelty, legally were not allowed to (yet they can ride horses?)
 * Note that the dwarf who plays Robb Stark never removes his helmet. In the books, this is actually a female dwarf, so the TV series might have kept her face hidden to reveal her later.
 * In the books, after Joffrey destroys Tyrion's gift of Lives of Four Kings, he is belated told that it was incredibly rare and priceless; one of only four original copies. It's the equivalent of needlessly hacking up a book with hand-drawn illustrations by Picasso.
 * Walda Bolton, aka Fat Walda Frey, was first mentioned as Roose Bolton's new bride during the lead up to the Red Wedding.
 * Ramsay routinely sets female prisoners taken from Winterfell loose in the woods and hunts them for sport. Note that he thinks the request to kill her immediately is unusual -- he normally rapes them, then flays them alive.