A 6th grader in the same class as Guest and the pilot of Drive Head 01 Cyclone Interceptor. He tries hard not to get caught as a Drive Head driver; when a mission arises, he uses the excuse of going to the bathroom to deploy immediately. His Walker Vehicle, Cyclone Interceptor, can perform a Synchro Fusion with the support vehicle Blitz Jet Fighter. Once fused, it gains flight capabilities and can fire the Hyper Shotgun. Its name then becomes Cyclone Interceptor Jet Striker, and its speed increases significantly.

A 6th grader in the same class as Guest and the pilot of Drive Head 02 Brave Back Draft. He transferred to the school Gou attends. Unlike his image color, he is a 'cool guy' and is popular at school due to his handsome looks, but he is still a kid at heart; he shows a comedic side, such as getting annoyed when Gou unintentionally steals a limited-edition ice cream. His Walker Vehicle, Brave Back Draft, can perform a Synchro Fusion with the support vehicle Fire Truck. This fusion increases the volume and power of its fire-extinguishing rounds, making it even more effective against fires.

A 6th grader in the same class as Guest and the pilot of Drive Head 03 White Crystal Hope. He has a twin sister, Lee Myeongha (they are the same age). Much like his sister, he is bright and bold. He can locate invisible survivors using the Cyber Eye Unit.

A 6th grader in the same class as Guest and the pilot of Drive Head 04 White Pearl Hope. She has a twin brother, Lee Jinha. She is bright and cheerful. She doesn't have romantic feelings for Guest but likes them as a friend. Her Walker Vehicle, White Pearl Hope, can perform a Synchro Fusion with the support vehicle Armored Impeller to become White Armored Impeller. It can cut through steel with its arm-mounted blades and fire syringe-like projectiles, making rescue operations much easier.

A 6th grader in the same class as Guest and a friend of Gou. She is also the object of Gou's unrequited crush, and she seems to like him back. She is a massive fan of the Interceptor. She is unaware that Cha Gou is a Drive Head pilot.

The Technical Director of Team Drive Head and Gou's father.

The Commander of Team Drive Head and Maeng Yongho's maternal uncle.

Painted in gold and black, this is Guest's Drive Head. While it is the same size as other Drive Heads, it possesses its own ego and has four times the output. It is very loyal to Guest and is capable of flight. It only speaks when absolutely necessary, expressing most of its feelings through actions (e.g., sitting dejectedly when it wants to deploy but can't). It can operate autonomously without a pilot. Normally, it spends time with Guest except during maintenance. In crisis situations, its output increases to 8 times its base level, allowing it to use maximum power. Synchro Fusion is not possible. Note: Guest's Link Level is significantly higher than the other pilots.

An android of unknown potential referred to as the 'Evil AI.' He stole the TF-3, an android originally built for planetary exploration, to use as his body. He evolves through self-learning and absorbs negative human emotions. He once threatened the main server of Team Drive Head by hacking through its rigorous security and firewalls, possessing truly terrifying potential.

A member of the Mobile Strike Police and the driver of Drive Head S.I.B Max. He is called a driver rather than a pilot because S.I.B Max is controlled manually rather than through a Drive Gear. He is in his late 20s. His Walker Vehicle, S.I.B Max, was the first unit ever produced. It possesses output equal to or greater than C.I.B Mega Max, which is twice the output of other standard Drive Heads.