If I remember right, he said that those three images were because he was trying to explain those faces to someone else but he couldn't accurately explain it so he went and found images that had those faces. That's why those images have those tags underneath them. After showing it to the person, he eventually decided to keep it as a tag.
What I find funny/interesting is that, since I'm not the best when it comes to ATLA lore, I had the wiki open in a tab so I could quickly lookup who was who when they came on screen. The Fire Empress is actually Zuko's child in canon. But in this game, Azula is referred to as her mom. That means the canon ending of book 2 (in FET) is that you took the Love Route and impregnated Azula as Zuko. Talk about attention to detail and continuity, dang...
On another note, I can't wait for Korra to find out you're the Avatar. It'll be really interesting. There've been a ton of hints so far that she'll find out eventually. Various people noticing things about the character. Sure, his harem of women recognized the MC in another person's body, but there was that other person (I think it was either Opal's mom or her sister) that recognized that, although MC is clearly an airbender, his stance is that of an earthbender. Plus there's the whole thing of how will Korra react once she realizes why she was able to communicate with MC through the spirit realm. Korra not realizing yet could be chalked up to her past experiences/attentiveness. That isn't to say that she isn't strong, but that her priorities lie elsewhere. Whatsherface (I'm pretty sure it was Opal's sister that noticed the earthbender stance) is in the military. It would make sense that she noticed how the MC held himself. She's trained herself to watch a person so that she knows how to handily fight him or her. How they hold themself, when are they weak, when are they strong. She would know the body movements of the different types of benders. And when one type of bender behaves like another type, that would defintely be picked up on by her.
I'm also really enjoying the Love route. I had held off on playing it for a while because I preferred to play a completed book all at once. I decided to spoil myself and played it a little early. But I was reading the thread back then when Love route was first starting. People were really loving the direction and storytelling of the Love route. And I can see what they mean. I'm also really enjoying it. And once Korra broke out of her depression shell, she really opened up and became more fun-loving and cares for the MC a lot. How faithful is her personality in this game to her personality in the show? Was she very fun-loving in the show? I doubt she was very sex-hungry like she is in the game, but the other parts of her personality. Are they the same?