Gasaraki

In the year 2050 A.D, approximately 1/10th of Japan is now under water due to the global warming effect. The city of Tokyo was no exception. The economy of Japan is crippled from this disaster and the government is willing for anything to help revive the country. As a result, the Japanese government forms "JESAS", a military foundation that has evil intentions of controlling Japan's future. JESAS handles the dumping of nuclear wastes into outer space. To insure their protection from other countries, JESAS has developed "R.B." Robotic Weaponry, which is controlled by pilots with "A.I. (Accurate Intuition)". On the opposite side of the law is the "Green Frontier", a united protection agency that was formed by countries sharing the same beliefs, to save the Earth. Featuring JESAS pilots Kanna and Kazuto and Green Frontier's Doota Kang and Mira Yu, these four youngsters will decide the fate of the Earth through love, friendship and the passion for their duty.

The year is 20XX. Mysterious huge robots called "Giant Robo (GR)" started to appear all over the world and destroy cities. The earth was covered with fear. And their next target is Japan! The hero of this animation Daisaku Kusama, who works in a diving shop, encounters a mysterious girl, simply called V who leads him to make a contract with an enormous robot "Giant Robo 1 (GR1)" at the ancient ruins (Minami Yonaguni Island) in Okinawa. He made a contract with UNISOM (main organization) and was approved to be a commander of GR1. Thus his battle has begun against GRO (antagonist organization) and creates a lot of dramas. Before long, Giant Robo of the 21st century will ask the world the true meaning of its power.

In the year 2005, a race of alien monsters called Zonders emerge from underground and launch a series of attacks on the city of Tokyo. The only defense against these creatures is the secret agency known as the Gutsy Geoid Guard (or 3G) and their ultimate weapon, the awesome giant robot GaoGaiGar. GaoGaiGar's pilot, Guy Shishio, is a former astronaut who was nearly killed two years before when the Zonders first crashed to earth. Guy's life was spared when a mysterious robot lion called Galeon pulled him from the burning shuttle and brought him to Earth. Guy's father, Leo, then used Galeon's technology to rebuild his shattered son as a cyborg, in the hopes that he could stop the aliens when they appear. Now, with Galeon as its core, GaoGaiGar fights to protect Earth. He is aided by a team of transforming robots and by a young boy named Mamoru, who has the power to purify the Zonders' cores, and seems to be connected to the mysterious Galeon.

Ryo, Gawl and Koji are 3 young boys who travel back into the past with only 1 objective: change history. In their time they discover that their country, Kubere, uses genetically enhanced persons called generators as a military tool. These generators are the cause for the Third War which kills most of the human population. Now Koji, Ryo and Gawl are there to change all the events.