While on a field trip gone wrong, Mamoru has a chance encounter with the mechanical lion that delivered him to his parents eight years earlier.
After Mamoru prevents Guy from crushing the enemy's core, the GGG scramble to analyze the boy's actions as they prepare for another attack.
Mamoru is taken into custody by the GGG; he learns how he was able to save the man trapped inside the core.
Guy and the GGG go on a Zonder hunt for a locomotive.
The robotic brothers HyoRyu and EnRyu join the GGG.
Robotic brothers discover they might be able to combine if their hearts and minds are synchronized.
Tomoe Hamba
Mikoto Utsugi
Kouji Ishii
Kotaro Taiga
Konami Yoshida
Hana Hatsuno
Mitsuaki Madono
Pizza/Soldat J
Nobuyuki Hiyama
Gai Shishioh
