Mobile Suit Zeta Gundam

The year is Universal Century 0087. Seven years have passed since the end of the One Year War. In its zeal to stamp out any remaining opposition, the Earth Federation has organized the Titans, an elite fighting force. However, the Titans soon get out of hand, committing atrocities on par with the worst the Principality of Zeon had to offer during the war. In response, dissatisified citizens, former Zeon soldiers, and even members of the Earth Federal Forces form a resistance group known as the Anti-Earth Union Group, or AEUG. As the next war is brewing, a small AEUG group arrives at Side 7 to investigate the new Gundam Mk. II... (Source: Anime News Network)

Taiyou no Kiba Dougram

The story is centered around a small group of guerilla freedom fighters on a colonial planet named Deloyer, who are known as the "Deloyer 7", or "Sun Fang" team. In an unexpected coup, the elected Governor of Deloyer becomes dictator and rules Deloyer under martial law with the support of Earth's Federation. Fighting for independence from Earth's Federation influence, the freedom fighters begin a rebellion against the Federation's Combat Armors using a Combat Armor of their own: the Dougram.

Space Runaway Ideon

From the continuing reclamation of the ruins of the planet Solo, mysterious mechas are excavated. But suddenly, an alien called Buff Clan attacks seeking the limitless energy “Ide.” The earthlings are backed into a corner, when the three mechas piloted by the earth boy Yuki Cosmo and others fuse together. Becoming the giant robot Ideon, they use their incredible power to fight back against Buff Clan. (Source: Sunrise)

UFO Robo Grendizer

Duke Fleed is a survivor of the Fleed Planet who is escaped to the Earth, onboard a mysterious "spaceship", where is raised by Dr. Umon as his adoptive son, and known as Daisuke Umon. Years after his arrival, he's faced with the threat of King Vega and his army, who want to conquer the Earth. With his friends Koji and Hikaru (and later his younger sister Maria Grace), Duke decides to fight back using his best weapon - the almighty Grendizer.

Muteki Choujin Zambot 3

There once existed a planet named Beal, until it was wiped out by the mysterious entity known as Gaizok. The few remaining survivors escaped to Earth and split into three families, named Jin, Kamie, and Kamikita respectively. While attempting to start a new life, the collectively known "Jin Family" prepared for the inevitable Gaizok invasion on Earth and its giant mechanical beasts known as "Mecha Boosts". In order to defend their new home, they have built three vehicles which when combined form the mighty Zambot 3. The Jin Family must not only defend against Gaizok attacks, but also harsh criticisms from the very people they protect, who blame the Jin Family for the invasion in the first place. (Source: AniDB)

The Big O

Paradigm City is a place without a past. 40 years ago, something happened that wiped the memories of everyone in it. Unfortunately, the people of Paradigm City were very busy before then, making Megadueses (giant robots) and monsters. People who were born after the memory wipe are gaining/recovering memories of the past and using them to build newer threats. With the help of The Big O (a faithful giant robot), his butler Norman and the android Dorothy, Roger Smith keeps Paradigm City safe. As problems mount and more memories surface, Roger's past and Paradigm's future begin to become suspect...