A bright, active, and innocent 3rd-grade elementary school boy. He can be a bit of a crybaby and occasionally shows a selfish, stubborn side typical of his age, especially regarding his fear of ghosts. However, he possesses a strong sense of justice, courage, and a kind, pure heart. His specialty is drawing.

The first member and leader of the Brave Police. Model number BP-110. Title: Patrol Detective. Transforms into a patrol car. He possesses excellent leadership and judgment, a kind heart that always considers others, and a righteous spirit. He shares a deep bond and friendship with his first human friend, Yuuta.

A robot built in England. Model number BP-119. Title: Knight Detective. Transforms into an ambulance. While he has a fundamentally serious personality, he is more emotional than the other members. His skills are said to be second only to Deckerd's. His partner is Regina Argine, a genius girl with a doctorate in mechanical engineering.

A member of the Brave Police. Model number BP-601. Title: Highway Detective. He is the only one who rides a motorcycle called the Gunbike. Originally part of the Highway Patrol, he was kicked out due to his personality and joined the Brave Police. He has a prickly and nihilistic personality.

A member of the Brave Police. Model number BP-301. Title: Combat Detective. Transforms into a crane truck. As the leader of the Build Team, he is calm, composed, moderate, and the most sensible member of the group. He is also quite skilled.

A member of the Brave Police. Model number BP-302. Title: Kung Fu Detective. Transforms into an excavator. A member of the Build Team who loves children. As a Kung Fu Detective, he is proficient in Chinese martial arts. He also works well? with Drill Boy. His hobby is watching dramas.

A member of the Brave Police. Model number BP-304. Title: Soccer Detective. Capable of a 3-stage transformation into a drill tank and a drill jet. The youngest of the Build Team, he is innocent but a reckless troublemaker and a show-off. His specialty is drawing and his hobby is soccer.

A member of the Brave Police. Model number BP-501. Title: Ninja Detective. Capable of a 5-stage transformation, including a supersonic jet, an animal robot, a patrol car, and a tank. Though he appears to be a cool guy, he is actually kind and warm. His primary duties are intelligence gathering and espionage.

A mysterious robot visible only to you. In reality, it is a bio-monster robot created by someone. During a battle, Deckerd aimed for its head, causing its personality to split into two (one is Mabethro, the other is you).