Podrick Payne
Young Podrick, Tyrion’s loyal squire and accomplice in more than one misadventure, may be recognizable to you because to his portrayal as a talented ladies’ man by Daniel Portman. However, he is described much differently in the literature. To begin with, he’s only approximately 11 years old and shy at the start of the first book, so no hooking up with women all across Westeros. In addition, unlike in the show, where Tyrion picks Podrick, Podrick is sent to Tyrion as punishment for taking several drinks in the novels.
Robb Stark
You are not seeing double. It’s only that Richard Madden resembles what the AI imagines the eldest Stark child to look like. There are, of course, a few minor errors. First, Robb, like the other youngsters, was aged up in the program from 14 to 17. Second, Robb was supposed to have inherited his Tully ancestry, which meant he was supposed to have reddish hair and blue eyes. He’s also depicted in the books as being close to his half-brother Jon. Unfortunately, his fate is the same in both.