Takeshi Kuroki
Takeshi Kuroki is the commanding officer of the Special Operations Unit, leading the Go-Busters and several hundred other staff members. He was originally the lab assistant of Hiromu's father and sees the elimination of Messiah as his number one priority, even if it means risking the lives of the Go-Busters to achieve it.
Toru Morishita
Toru Morishita is the system control operator for the Special Operations Unit. He is calm and coolheaded whenever he helps out the Go-Busters.
Miho Nakamura
Miho Nakamura is an operator for the Special Operations Unit, a recent hire in the Energy Management Center and does not know much about the Go-Busters. She is well versed in subspace detections.
Takaishi
Takaishi is in charge of the maintenance crew of the Airframe Mechanic I Kind. Over 50 people of the Energy Management Center are in charge of maintaining the Buster Machines between battles.
Mamoru Koyama
Mamoru Koyama is the newest member of the Buster Machine maintenance crew and carries a journal to cover his activities.
Rika Sakurada
Rika Sakurada is Hiromu's older sister. She does not approve of Hiromu being one of the Go-Busters, but she supports him, anyway.
Yosuke Sakurada
Yosuke Sakurada is Hiromu and Rika's father who was the chief of the Transport Research Center before he sacrificed himself to trap Messiah in subspace 13 years ago. He is the only known scientist to have devised a way to install programs into humans.
Michiko Sakurada
Michiko Sakurada is Hiromu and Rika's mother who was a staff member of the Transport Research Center before she sacrificed herself to trap Messiah in subspace 13 years ago.