Derby is extremely PR trained. Like you’d be surprised given the things he says in the game but I feel like he knows very well who he has and doesn't have to have a filter with. The moment he’s in public his whole demeanor changes, you'd even think he’s a nice person.
Derby and Tad are the most cartoon-like rivals. And their dislike for each other doesn't even have a reason, it's not like their hate for the greasers, they just don't like each other. So they constantly clash over the most dumb stuff ever, like once they started an argument because Derby didn't like the sound of Tad’s breathing. Bif and Gord always have to separate them before they start something similar to a cat fight.
Despite Derby and Tad’s disdain for each other, they pair up every time they need a good strategy because they're the most competent preps.
Bif is a dancer, a ballet dancer, he did it alongside boxing up until he was a teenager and had to leave it because of social rejection. This also ties to my idea that Bif runs like Chris Evans (yk the thing about he having perfect running form?) like he's very good at it because of the coordination dancing gave him. He still tries to hit moves in the secrecy of his room.
Pinky and Gord have tried to convince all of the preps to let them install a wig on them, only succeeding with Justin, Parker and Bif (He looked like Zoe).
Most of the preps try to keep rigorous diets, not strict, but they have in mind what they pick to eat, they don’t like the image that it would give to not be in good shape and i feel like most of them have poor metabolisms. Except Justin and Bif, those two could order the entire menu when they go out and burn it out on a day.
Justin and Derby are actually really good friends, Derby even consents Justin blabblering about the jocks (although he knows Ted won't look on the others direction in a million years)
Parker's constantly running late, even if he always arrives on time, he still has to run everywhere, no matter how hard he tries he’s always on the verge of being late. He's started to feel bad, but he can't help it. He could leave an hour early and still have to run wherever he needs to be.
Chad and Bryce have started going out on “secret” dates (everyone knows they're not so slick) after Gord and Pinky insisted on them to confess their real feelings for each other