Mecha Anime
Astroganger
A scourge is sweeping across the galaxy—a scourge called the Blasters! These devious and handily-numbered alien invaders conquer, devour, and destroy every civilized world they see—and now, their sights are set on Earth! But worry not, good children, because Earth has a top-secret countermeasure developed by Dr. Hoshi and the International Science Police Headquarters.
Our secret weapon is the mighty, towering super robot, Astroganger! Crafted from mysterious alien living metal, the robot Ganger has just one weakness—he's kinda dumb! Enter the best person for the job, Dr. Hoshi's ten-year-old son Kantaro.
By joining their powers together, Ganger and Kantaro fuse the incredible power of a fightin', flyin' robot with the uncompromisingly savage, decisive intelligence of a middle schooler: Astroganger! With their powers combined, they'll save the world approximately twenty-six times!
(Source: Discotek Media)
Nami Hexin: Huanghun Pian
Nanocore is a science fiction Chinese cartoon in 3D. The stage of the story is established on a fictional planet Birthigin. In this young planet, humanity will never stop longing for a bright future despite reason and fear. In revolutions and evolutions, humanity keeps challenging the Creator, and which eventually induces contractions intensified. People choose to wake up and struggle for their own ideals. They end the peace and angers sweep the whole planet, resulting in outbreak of the crisis known as Purple Fog.
In time of humans facing their odds of survival, the plan N.S.P led by the elite keeps frustrating until NanoCore's involving. It brings the plan his birth. As the existence, that the elite thinks should lead the development of human weapons, however, he breaks shackles of fate, and arrives at a land where faith no longer exists.
He learns to make choices and grows up with them, and the dim future of Birthigin thus begins to change.
(Source: Nanocore Tumblr)
Garon
The story follows an awe-imposing giant named Garon who comes from space to Earth, threatening humanity with extinction. However, a girl believes that Garon is not evil, and reaches out to Pick, a boy contained inside Garon's body. Meanwhile, the military plans to a nuclear strike against Garon.
(Source: Anime News Network)
Gasshin Sentai Mechander Robo
The Doron Empire from the Ganymede System discovered Earth as an ideal world for them to conquer. The interest of expanding the empire came as a result of the power-hungry General Ozmel who overthrew the current reigning Queen Medusa of the Ganymede System as a start of their universal conquest.
Almost completely succumbed to the empire, Earth is at its last days, and one scientist, Dr. Shikishima, had only one hope in restoring Earth from its alien conquerors--- a massive mecha known as the Mechander Robo, specially programmed and designed to battle these invading aliens from complete takeover of Earth. Along with this awesome fighter machine, Dr. Shikishima also recruited three pilots to be placed behind the Mechander Robo's controls--- the mysterious Jimmy Orion, the scientist's son Ryosuke Shikishima, and Kojiro Hachijima.
Although the primary storyline is Earth battling the Doron Empire, there is something within lead pliot Jimmy Orion's past that was somewhat connected towards the entire storyline.
(Source: MAL)
Mugen Senki Portriss
In a raving world, legendary knights stood up. Will they become gods of war or world saviors? Three Portriss Knights and sole human boy are now going to change the World!
Portriss Planet, home of where robots live in peace. However, this peacefulness was ruined by the sudden appearance of a Dictator "Dark Portriss". Dark Portriss plans to attain infinite powers through the use of the "Space-time destroying Cannon". The only ones able to stop this are the Portriss Knights! A boy, Yuuma, accidentally got into the Portriss World, and the Portrisses` adventure begins!
(Source: AniDB)
Moshi Juexing: Suyuan
Moshi Juexing: Ruqin Part 2
Moonstruck Artemis
Genki Bakuhatsu Ganbaruger
Koutarou's father is trying to train his son in the art of the ninja, but a mis-hit bomb accidently damages a shrine and releases a great demon that Eldoran had been keeping contained. Eldoran manages to contain him, but one of his servants manages to escape as well, and now attempts to free his master. To stop him, Eldoran grants the three mecha Gotiger, King Elephan, and Mach Eagle to Koutarou and his two friends, as well as suits that grant each of them a special power. Miracle Ninja Ganbare Team is born!
(Source: starfox.net)
Mirai Robo Daltanias
It is the year 1995. Earth has been conquered by an alien army from the Saar cluster known as the Akron. The cities of Earth have been destroyed, and the remaining survivors live in harsh shanty towns and villages. Kento, a war orphan, hides within a cave along with his companions in order to escape some bandits. In the cave, they find the secret base of Dr. Earl, who was an inhabitant of the planet Helios, a planet conquered by the Akron. Dr. Earl then fled to Earth, bringing with him the greatest achievement in Helian technology: the super robot Daltanius, whose power is increased when combined with the intelligent lion robot, Beralios. Dr. Earl entrusts the fight for Earth to Kenta, who happens to be a descendant from the long disappeared Helian royal line.
(Source Wikipedia.org)
(Source: AniList.co)
