Uchuu no Kishi Tekkaman Blade
In the United Earth Year 192, Earth is under attack from an alien race known as the Radam, which consists of bug-like monsters and armored warriors known as Tekkamen. The Radam's spaceship lies dormant on the dark side of the Moon where the Radam wait for it to be repaired.
Fighting against the Radam is a special defense force called the Space Knights. The group consists of Heinrich von Freeman, the group's commander; Noal Vereuse, the pilot of the Space Knights' ship Blue Earth; Aki Kirasagi, the Blue Earth's navigator; Milly, the communications operator; Levin, a computer mechanic; and Honda, the group's mechanic.
Before the start of the Radam invasion, the exploration ship Argos discovered the dormant Radam spaceship in the outer rings of Saturn. While exploring the ship, the crew were captured by pods and converted into Tekkamen. Before he was fully converted, Takaya Aiba (Tekkaman Blade) was freed by his father and placed into an escape pod; his father then activated the Argos' self-destruct. The Radam crashed on the Moon and began their attacks on Earth.
After spending six months drifting toward Earth, Blade bursts free from his escape pod and attacks the Radam forces, entering into a fight with Tekkaman Dagger (Fritz von Braun). After the fight, Blade crashes on Earth and is found by Noal and Aki, who take him back to their headquarters. Blade is initially hostile towards the Space Knights, but as time progresses, he begins to respect them for their dedication and develops a romantic interest in Aki. With Blade’s help, the Space Knights begin to repel the Radam until Blade's transformation crystal is shattered during a battle with Dagger. Levin develops a battle robot named Pegas which houses the shards of Blade's crystal and enables him to transform again. In his first transformation using Pegas, Blade challenges Dagger and kills him.
Meanwhile, Earth's military leader, General Xerces Gault, becomes obsessed with acquiring the Tekkaman armor for his own use. He attempts to attack the Space Knight's base during an emergency, but is forced to withdraw by order of Earth's President. He later sends in the spy Balzac, posing as a journalist, to infiltrate the Space Knights. Balzac acquires data on the Tekkaman armor system and Earth's military create their own Tekkamen armor, which are worn by Balzac and Noal.
Four more Tekkamen — Tekkaman Lance (Molotov), Tekkaman Axe (Goddard), Tekkaman Sword (Hun-Ri) and Tekkaman Evil (Takaya's twin brother Shinya) — arrive on Earth to challenge Blade. Tekkaman Rapier (Takaya's younger sister Miyuki) also arrives on Earth, but like Blade she is not under the Radam's control. Evil, Lance, Axe, and Sword attack the Space Knights' base and attempt to kill Rapier. Although outnumbered, Rapier self-destructs in an attempt to destroy the four Tekkamen. Blade manages to kill Lance and Axe and he later gains the power to attain Blaster Tekkaman mode, although he loses more of his memories whenever he uses it. Evil is given the same ability as the last line of defense for the Radam's leader, Tekkaman Omega.
At the end of the war, Blade and Evil meet for the last time, where Blade kills Evil. As he dies, Evil is freed from the Radam's mind control. Balzac kills Sword and they both burn up in Earth's atmosphere.
Blade takes Pegas to the Moon, where he confronts Omega, who reveals that he is Takaya's older brother Kengo. Omega launches the repaired Radam spaceship and heads for Earth. Blade attacks Omega, who easily defeats him. Omega is about to kill Blade when Pegas steps in front of the killing blow and sacrifices itself. Pegas' destruction enrages Blade and causes him to transform into Blaster Tekkaman mode for the last time. Blade kills Omega and causes the Radam spaceship to explode. The remnants of the Radam spaceship fall to Earth along with Blade, now stripped of his armor. As a result, Blade is left bound to a wheelchair and is completely amnesiac, cared for by Aki.