He was formerly a pilot and test-ran the Exo-Force Battle Machines in their first stages before the first Peaceful Era. He, Akina and Tamika were separated from Takeshi and captured by the Robots when they attacked. He and his family were reunited with Takeshi, thanks to Hikaru.
Yukio is the Father of Takeshi and Tamika and is the Husband of Akina. He was formerly a pilot. When he was captured by the robots, he designed their battle machines.
|Main Characters:||Takeshi | Hikaru | Ryo | Ha-Ya-To | Hitomi | Sensei Keiken|
|Minor Characters:||Swift | Tech | Yukio | Tamika | Akina | Unnamed Pilot | Unnamed Pilot|
|Robot Characters:||Meca One | Devastator | Iron Drone | Venom Walker|