RahXephon

In the year 2012 Japan was invaded by the Mu. Human-like beings from another dimension with blue blood. In the year 2015 Tokyo is attacked by invaders, who are repelled by a humanoid weapon called a Dolem. During the chaos, Ayato Kamina meets Reika Mishima, a classmate. During that same day, he is attacked by government officials but a woman named Haruka comes to his rescue, informing him that she was sent to get him by the Organization TERRA, and that Tokyo had been sealed in a time rift where time flows one third as fast as the outside world. He flees from Haruka onto a train where he sees Reika once more. Arriving at the Room of Rah, he follows her to a tremendous egg where the Dolem RahXephon is hatched from, and upon her singing his mother appears atop the Dolem that had stopped the TERRA Invasion. In the battle Ayato's mother is injured, and Ayato flees Tokyo Jupiter with Haruka upon seeing his mother's blue blood.

Mobile Police Patlabor

In the future, rapidly advancing technology gives birth to giant robots known as "Labors," so named for their usefulness in heavy industry. However, this also gives rise to "Labor crimes," resulting the need for a new branch of law enforcement equipped with and dedicated to the policing of Labors. When Izumi Noa, a female police officer, becomes the newest recruit of Special Vehicles Division 2, she and her top of the line "Patrol Labor" (or "Patlabor") Alphonse are swept into a series of adventures featuring crazed construction workers, eco-terrorists, and sea monsters. (Source: Anime News Network)

Chouja Raideen

Hishou, Ginga, Ace, Hayate, and Ikazuchi all work at a studio doing various idol-related jobs at the request of their manager, Reiko. But in reality, These five teenagers are really the Reideens, a group of superheros who fight the Super Devils sent by Lushu, a mysterious being. Little do the Reideens know, these Super Devils are being sent for a more important purpose... (Source: Anime News Network)

Super Robot Wars Original Generation: The Animation

Dr. Jurgen of DC developed a global defense system to combat potential alien threats. This system has two elements. First is the VTX-001 Vartoul unmanned anti alien PT. Governing these drones is the ODE worldwide network system. However, this system has a noteworthy secret. A living human is needed to control the ODE core. Furthermore, the ODE core needs human organs to support itself. At the present day, the drone have gone on a mass abduction spree. Kyosuke and co has been sent in to take care of the problem. (Source: Anime News Network)

Super Robot Wars The Original Generation: The Divine Wars

It is two hundred years after the beginning of the Space Era, when human civilization on Earth began expanding into space. However, by the start of the 21st century, two meteors struck the planet, sending humanity into chaos. By the year 179 of the Space Era, secret technology, dubbed Extra-Over Technology, or EOT, was discovered by the Earth Federal Government within a third meteor that hit Earth in the Marquesas Islands of the South Pacific. Dr. Bian Zoldark, head of the EOTI Institute (Extra-Over Technological Investigative Institute), had evidence the creators of the EOT were heading to Earth, in order to reclaim it...or worse, invade the planet. In order to defend humanity from extraterrestrial threats, the government begins to research and develop humanoid mecha called Personal Troopers. (Source: Anime News Network)

Super Robot Wars OG: The Inspector

With many of its central personnel lost in the war, the Earth Federation Government is forced to rebuild, and Brian Midcrid, president of the Unified Colonies, takes the position of its president. During an emergency session of the Federation Diet, he publicly acknowledges the existence of extraterrestials, and reveals the events of the L5 campaign to the masses in what will later come to be called the "Tokyo Declaration". He goes on to state that these aliens pose a serious threat to humanity. (Source: Crunchyroll)