Sakugi Mitsuaki is a poor college student who gets hooked on figure modeling. In return for helping his class he receives some special putty—but the figure he builds with it suddenly comes to life. The figure is a life force called Orichalcum ("Oriharukon") that fulfills the wish of its creator. Their strange life together begins.

Because his friends fired a rocket into the US Army camp, Suzuki was wanted by the US Army and the police. While he was running away the sea surface suddenly rose, and when a brilliant light appeared he saw a strange looking battleship flying in the air. He was dumped into the sea and when he crawled onto the battleship there was a beautiful girl standing there. She said her name was Lyx, the princess of another world, and added; "My Father is Japanese, Shinjiro Sakomizu. Please help me, Suzuki".

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While Professor Saotome completes his masterpiece, the Shin Getter Robo, a strange object enters the Earth's atmosphere. Hayato, in control of the lab while Saotome obsessively works, orders Getter Robo and Getter Robo G to launch and destroy the object before it impacts.

This manga was writen to promote the TV series by the same name licensed by ADV. It covers situations not in the anime. It's about a cute female robot that has the brain of a cat.

From StudioRobb:

This is the story of a teenage boy named Takeru Tachibana and his struggle to recover his sister Sayoko from a "cyborg dogfight circuit". When Takeru was 10 years old, his town was bombed during an enemy air-raid in which his parents were killed and he was mortally wounded. Sayoko, cut deep with "survivor's guilt" and a "co-dependent" inability to deal with living alone, rashly sells her brain to the Albion Corporation run by a mysterious CEO named Véltare Marçeau in order to pay for a risky surgical operation that Takeru may or may not survive. Her brain is placed in a cybernetic body, the process of which essentially eliminates the brain's memories and heightens its aggression. Her new identity is The White 13, or "The Ice Doll", and for the next five years she is placed on a dogfight circuit fighting other cyborgs in gladiator-style extravaganzas where she eventually becomes the grand champion and obtains the rank of "sirius"...

The story begins shortly after Takeru has liberated his sister from the dogfight circuit only to discover that, outside the cicuit, Sayoko's brain has a "self-destruct" mechanism and that she is dying. Takeru has one week to find a way to cure his sister or return her to the circuit or she will die. Adding to the problem are the "dogged" efforts of the Albion Corporation to recover "their stolen property" as well as a cast of characters who all have their own scars of some sort...

The ultimate cross over manga featuring Mazinger Z, Great Mazinger, Grendizer, Getter Robo, Getter Robo G and Jeeg! These all-stars band together in order to defend Earth from cosmic evil. This manga is in the same vein as all those old Toei cross over movies, and the self-parody gets pretty strong later on.

The story tells about Hiroshi Shiba, a car racer who is mortally wounded on a laboratory accident, but restored to life by his father, Professor Shiba, a talented scientist/archeologist, who is incidentally investigating the relics of the ancient Yamatai Kingdom. The professor discovers a tiny bronze bell with sorcerous powers, and shortly afterwards he is murdered by the henchmen of Queen Himika, the ruler of the Yamatai (sometimes translated as Jamatai) Kingdom, who wants to seize the ancient bell and its power.

Classic 1976 manga adaptation of the 1974-1984 Japanese action figure series, Microman (aka Micronauts in the west).A young boy meets tiny super-powered heroes and joins them to fight a giant alien menace--the Acroyear--piloting his own miniature giant (?) robot!

Johnny Ridden survived through the fierce battle of A Baoa Qu although his MS-14B Gelgoog High Mobility Type was badly damaged by the FA-78-1 Gundam Full Armor Type's overwhelming firepower. With the aid of a comrade, he reached a Dolos-class carrier where he was reunited with his MS-06R-2 Zaku II High Mobility Type, which was modified by a mechanic and nicknamed the MS-06R-2 Zaku II High Mobility Type "Full Bullet Zaku".

On the planet Jormungand lives a civilization of vikings composed of nine clans and one king. They have been at war with the Dragon Empire, however for the last fifteen years there hasn´t been any acts of aggression from either side, but now... that will change.

Do you know of the man called Johnny Ridden? The legendary Zeon ace pilot? He disappeared after the battle after Abaoa Qu after a deadly showdown with a formidable Federation MS, and became a legend. As Johnny Ridden is trying to adapt to his new life of exile on Earth, he is followed by his past. He is called back into the spotlight to fight one last evil, a ghost of the old Principality of Zeon.

Years after the events of Getter Robo/Shin Getter Robo, Hayato Jin is the leader of NISAR; a private owned research and weapons development organization based in Japan. He, and Professor Tachibana, have been developing various weapons and building up their forces to deal with a threat that started fifteen years ago: the mad scientist Rando. When Rando's forces begin their terrorist operations around the world, NISAR begins its search for exceptional soldiers to pilot their super weapon, the Getter Robo.

Over a century has passed since mankind sought an outlet in space for its burgeoning population. It is now Universal Century 0100. A new battle, one forged from the experiences of Hathaway Noa once embroiled in the Neo Zeon calamity caused by Char Aznable. The Minovsky Craft equipped Xi Gundam dances wildly through azure skies…

In a universe where men and women are mortal enemies, Hibiki is captured by a band of female pirates. The group find themselves stranded with a super ship they dub the Nirvana and set out for the female home planet. Along the way, they discover the existence of the "The Harvest" and the possible destruction of both men and women.

The manga differs greatly from the anime, with fewer characters and focusing more on the relationship between Dita and Hibiki.