Kensaku Shiraishi was born and raised in Central Asia, where he learned how to hunt birds with a slingshot. After being orphaned, the young Kensaku was found and raised by General Kurama Tetsuzan. He was once saved by a priest who was taking care of his orphanage and died to protect them from criminals. Since then, Kensaku had always felt a need to protect those weaker than himself.

A scientist who trained in the Defense Ministry along with Kensaku. He joined Battle Fever to avenge the death of his friend. Makoto is an expert marksman. He is a loner, preferring to go off by himself. Makoto plays a trumpet to distract Egos.