A super robot Eiji is a boy who used to be raised by his sister Ayaka, who he is searching for. He has a short temper and is either annoyed by Toga or Luna.

A super robot developed by Sandman to defend the Earth. It was given the role of protecting the Earth as a "shield." It is born when Gran Kaiser combines with four Grandivas, G Attacker, G Striker, G Driller, and G Shadow, to form a "Super Polymerization God". It boasts high combat capabilities because it always activates its Ergo Form when and after it combines.

Born to defy limitations, the pistol whispers defiance. Witness the artistry of precision, as the pistol becomes an extension of your will, empowering you to conquer all.

A super robot Eiji is a boy who used to be raised by his sister Ayaka, who he is searching for. He has a short temper and is either annoyed by Toga or Luna.

A super robot developed by Sandman to defend the Earth. It was given the role of protecting the Earth as a "shield." It is born when Gran Kaiser combines with four Grandivas, G Attacker, G Striker, G Driller, and G Shadow, to form a "Super Polymerization God". It boasts high combat capabilities because it always activates its Ergo Form when and after it combines.

Born to defy limitations, the pistol whispers defiance. Witness the artistry of precision, as the pistol becomes an extension of your will, empowering you to conquer all.

A super robot Eiji is a boy who used to be raised by his sister Ayaka, who he is searching for. He has a short temper and is either annoyed by Toga or Luna.

A super robot developed by Sandman to defend the Earth. It was given the role of protecting the Earth as a "shield." It is born when Gran Kaiser combines with four Grandivas, G Attacker, G Striker, G Driller, and G Shadow, to form a "Super Polymerization God". It boasts high combat capabilities because it always activates its Ergo Form when and after it combines.