Okay, first I have only 12 chapters of canon and I APOLOGIZE TO THE WHOLE WORLD but boy am I having fun.
First, Fon is kind of unbalanced. He watched his parents being killed and has recurrent nightmares about it, his dad wouldn't listen to one of Mozart's songs and now whenever he listents to it, he feels like shit and he gets all CRAZY-EYED whenever it is implied that his adoptive father has experimented on him. He hears a voice that tells him to remember his feelings of revenge and spurs him into action. He is afraid of leaving his country because he feels he'll die if he ever does.
To summarize, the boy has ISSUES.
Now, first few days in camp. He learns of different universes, finds out he is out of the country, realizes he can't go back and freak outs over it. And then, less than a week later, LOL MASQUÉ PLOT.
Fon entered the game not really knowing anyone, but he's very smart, a future leader, very capable of thinking straight while on a crisis. He gave the impression of being self-sacrificing, but that wasn't exactly it. Fon wants to be stronger. After witnessing his parents' murder one of the killers asked the leader if they should kill the brat too, the leader said not to, because what could a kid do about it? Fon understands that he was too weak to do anything about it, and vowed to himself he'd become stronger.
At some point Yuta went "you're trying to save us all" but that wasn't it at all. Fon simply didn't want to see more people die in front of him and he didn't want to stand face to face with the fact that he is still too weak. So he tried, and he would have been willing to die if it meant no one else would.
Then he got killed!
Which, okay. He knew he would be, he was too dangerous to be kept alive, and he understands perfectly the reasoning behind it. He disagrees with the wolves lack of rebellion and thinks they accepted Masqué's rules very easily, but he understands it.
He will also be pretty okay with most of the wolves, he doesn't blame them at all. Everyone did things the best they could.
The people Fon will be the most wary of are Ritsuka and Soubi. More Ritsuka than Soubi, hilariously. Because Ritsuka lied shamelessly whereas Soubi mostly hung back and agreed. Again, he understands why they did it and doesn't blame them at all, but he won't be able to trust them. In his mind, if they lied before with such ease, they can and will do it again.
He'll also naturally distrust the rest of the wolves from the game to different degrees, depending on how much they interacted. Soubi and Ritsuka are special because they lied directly to Fon.
THAT SAID, the nice boy has broken 1k. SO. FIRST IMPRESSIONS MEME I can also answer questions and such. Will get to it right after napping.
ETA:
TAP THAT POLL WILL HAPPEN TOMORROW. THIS IS YOUR LAST CHANCE TO SIGN UP. REALLY GUYS. REALLY!11 Sorry got distracted by plot, BUT I'M CODING IT ALREADY.