A cheerful extrovert who's always asking, "Wanna go for a run?" He constantly mingles with everyone else, and while he occasionally gets annoyed looks, he's mentally tough and doesn't let it bother him. He's a boy who's always installing and removing tuning parts. He often goes to RX-7's house to eat snacks or invites everyone over out of the blue. He can be unpredictable; once, he spent time stacking pencils tip-to-tip for no apparent reason, and somehow made them stand up. Everyone frequently thinks he's just plain weird. He likes friendship and pizza, and has no dislikes.

A guy who's always hitting the mountain passes. He drives like a maniac at night but barely speaks during the day, living a complete day-night reversal. He essentially comes alive when the sun goes down. He's a boy who often gives a wry smile when MR-2 pesters him. Whenever he tackles a pass, he does this nonsensical thing where he puts a cup of water in the driver's seat and tries not to spill it (based on certain movies and manga). He likes tofu and hates cilantro.

The guy who somehow manages to be late to every group meetup. He always claims he was late because he was tuning his car, but he hasn't actually done any modifications; he just overslept. He's a lazy boy who finds moving around to be a chore. However, once he actually meets up with everyone, he suddenly starts talking like a machine gun, often leaving everyone at a loss for how to respond. He frequently talks about movies and cars. He likes salad and hates junk food.

An extroverted boy who's often called noisy because he's always revving his engine and has a loud voice. He's always energetic but catches colds so often that everyone is constantly worried about him. He doesn't know why he's always sick, but everyone else does: it's because he sets his air conditioner to -10 degrees Celsius. Because of that, he has to sleep under about ten blankets. He keeps it at -10 degrees simply because he finds it too much trouble to change the setting. He likes cake and hates yogurt.

A girl who loves to mingle and is ranked 3rd among the girls for being the loudest. Even though she's a Daihatsu, she often brags about being a luxury car, which can be annoying, though she doesn't realize it herself. She often goes home only to immediately head back out for a drive. In the past, she once accidentally broke a beehive and got chased by bees (this is not intended to criticize girls). She likes hamburgers and, surprisingly, hates juice.

She is closer to Copen than anyone else and is popular with both boys and girls. Everyone often gathers at her house to play games. she is diligent with her studies, but in her spare time, she plays with her erasers, which is her one cute quirk. She comes from a wealthy family and lives in a huge house. She likes cookies and chocolate, and has no dislikes.

A quiet, gentle girl who excels at academics. Her physical abilities are incredible; she's extremely flexible and fast. She might actually be ignoring the laws of physics. She has a sad past, having been abandoned long ago, but she was quickly found by new parents. She doesn't remember much from back then, so she's gradually forgetting the fact that she was ever abandoned. She likes chocolate and hates meat.

An elegant and quiet girl who can occasionally be cold, but for some reason, she acts spoiled with her parents when she gets home. She exercises regularly and is interested in GT-R. She's smart but has a massive obsession with classic cars; she has a habit of screaming whenever she spots one. She often gets into fights with Cappuccino, and while GT-R usually stops them, she's a handful because she'll start the fight right back up again. They fight so often that it sometimes takes multiple people to pull them apart. They often glare at each other during class. She likes garlic toast and hates bitter things.

A girl who covers herself in stickers and frequently hangs out with the other girls. Her sticker book is full of rare items, especially lots of puffy drop stickers. However, since she collects them herself, she often decides she doesn't need them and gives them away to others. She likes French food and hates surströmming.

She gets teased for her name being a type of coffee, but she doesn't mind. She's mentally strong and is an expert at driving mountain passes. She's interested in GT-R, which leads to frequent fights with Century. GT-R usually tries to stop them, but she's a bit of a pain because the fighting resumes almost immediately. When their arguments escalate, other kids have to step in too. She and Century often glare at each other even during class.