Taiyou no Kiba Dougram

In the planet Deloyer, a colony of the Earth federation, Colonel Von Stein stages a coup d'etat on behalf of the Federation chairman Donan Cashim.

Malcontents on the Deloyer colony agitate for the independence of their world from the Earth Federation. In an unexpected coup, the elected Governor declares martial law and sets himself up as absolute dictator. With the approval of the Federation, he rules the planet with an iron fist. In reaction, a ragtag group (including the governor's estranged son) rises in open rebellion, using a powerful prototype Combat Armor: the Dougram. Their goal is the end of the dictatorship and total independence from the Federation's influence. The story follows the action of the guerilla freedom fighters known as "The Fang of the Sun." The war is fought across the planet Deloyer as the Federation vigorously pursues the rebels.

Giant robot Daikengo flies through space to re-establish galactic peace; on-board prince Ryger, who ran away from his planet Emperius to defeat the menace out of his reign borders, in order to save his people; Cleo, corrupted prime minister's daughter, help him along with two nice little robots, Anike and Otoke. They fight evil Lady Baracross, leading invasion forces, with her assistant Roboleon, wearing a Napoleon style hat. Daikengo is the first robot with scuttles on his mouth. When he opens them, his vampire style teeth are shown and he can spit fire.

A.D. 2087 - the United Lunar Empire Giganos wages war on the Earth Federation Military to take control of the planet and establish a "rebirth" of the human race. During an invasion of a colony by Giganos' forces, three civilian men stumble upon a trio of top-secret Metal Armor units called "Dragonars" and pilot them to combat the enemy forces.