Hayate Shiranami Affiliation: Zeta Speed Appearance: Black hair, white racing suit A young male racer who entered the world of racing out of admiration for Ryo's driving. He is steadily gaining fans with his humble, stoic attitude and bold, decisive driving. He never becomes arrogant regardless of the situation and is well-loved within the team. Some say he is quiet and hard to read, but he is kind at heart. He is brief with words toward Guest but treats them kindly. He has no romantic feelings for Ami.

Michael Redstar Affiliation: AI Flag Appearance: Blond hair, blue eyes, red racing suit An American male racer affectionately known by the nickname "Mac." He is famous for being a womanizer, but he has a bright personality and talks cheerfully with men as well. He is the type who never misses fan service like autographs or handshakes. He took a liking to Guest at first sight. Since then, he has been making approaches. He is drinking buddies with Daichi. There is a legend that he once hit on a race queen in his own team and was rejected in two seconds.

Daichi Kamifuji Affiliation: Chat Axel Appearance: Brown hair, yellow racing suit A young male racer whose results are improving through sharp intuition and rough but daring driving. He was a classmate of Guest during their student days, but they were apart for a time before reuniting in the racing world. He is a hot-blooded racing nut who simply loves racing. Seventy percent of his conversation is about racing. Countless women have approached Daichi only to leave because they couldn't keep up with the racing talk. His parents are doctors, and he has a history of fighting with them when they tried to force him to become a doctor (they have since reconciled). His hobby is making curry. He is very particular about spices.

Ryo Kakeru Affiliation: Seisei Engine Appearance: Long silver hair, black racing suit A cool, top-tier male racer whose motto is "Victory is my job." Most of his time outside of racing is spent on practice and research. He remains the strongest because he wants to see the view that lies beyond continuous winning. He shows no interest in anything other than racing, but his heart is stirred by Hayate and the others as they grow stronger. He expects Guest to bring a new wind to the racing world as well. His hobby is listening to classical music.

Ami Mizushima Affiliation: Zeta Speed Appearance: Long light-blue hair A popular race queen for Zeta Speed, known for her refined appearance and polite fan service. She is also the daughter of the president of Zeta Speed. She became friends with Guest after being helped when she got lost at the race track. She has no romantic feelings for Hayate, Mac, Daichi, or Ryo. She has a boyfriend who is a racer on the team.