Volfogg is put on high alert when the Zonder target Mamoru at a seaside amusement part. However, the Four Machine Kings actually have another prey in their crosshairs.

Shortly after a fossilized ChoRyuJin is discovered, GaoGaiGar and J-Der are suddenly incapacitated while fighting a quartet of Primevals. With the King of Braves out of commission, only GekiRyuJin remains to fight back.

The Four Machine Kings take control of the Isolde particle collider and the GGG are tasked with saving the scientists taken hostage. In the process, Mamoru discovers he has an ally watching over them from the shadows.

With true purpose behind the boys' powers revealed, The GGG and J-Stone Warriors join forces to fight against the Primevals.

As the GGG struggles to keep up with a Zonder speed demon that's tearing up the streets, Hyuuma nabs the newly developed Z-Sensor and goes for a ride around town.

The Seven Primevals have taken control of the Orbit Base, leaving only Mamoru, Kaidou, and a handful of GGG members left to stop them.

When the Zonder send a bullet train speeding out of control, it's up to HyoRyu, EnRyu, and the LinerGao to stop it!

Seven of the most powerful Primevals take human form and command their fleet of Zonder warships to encircle the GGG's Orbit Base.

The robotic brothers HyoRyu and EnRyu join the GGG! Their deployment couldn't have come at a better time as they may be the best bots to face a Zonder that's steamrolling the highway!

Guy, ChoRyuJin, and GekuRyuJin blast off into space to stop a Primeval who aims to smite Earth by raining asteroids down upon it.

After Mamoru is taken into custody by the GGG, the boy learns how he was able to save the man trapped inside the core. In the meantime, development is completed on a new tool in GaoGaiGar's arsenal: the Dividing Driver!

When presented with an artifact containing a peculiar G-Stone, Mamoru pieces together the true nature of his existence.

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.

As the GGG struggle to destroy the cannon before it can take out the Orbit Base, FuRyu and RaiRyu step up to prove that they're more than just cold steel.

Mamoru and his classmates discover that they're on their own when their Vice Principal is Zonderized.

While Mamoru worries about his place within the GGG, the Chinese reveal their own pair of robot brothers: FuRyu and RaiRyu. However, the brothers' cold and calculating nature may pose a problem when the Great Wall of China is suddenly morphed into an o...