S1 E1 • Les frères de l'Espace

Kouji Kabuto tries his TFO made of Chogokin. When flying, he is attacked by the UFOs of Vega. Fortunately Duke Fleed arrives on time to save the day (but not too quickly nonetheless). Kouji does not actually know that Duke Fleed is the prince of Fleed. Source: tv.com

Première diffusion : 5 octobre 1975

S1 E2 • Le prince d'un autre monde

Kouji discovers the identity of Duke Fleed, but has no time to ask questions because Vega attacks. Duke Fleed and Kouji unite their power and push back the enemy. Source: tv.com

Première diffusion : 12 octobre 1975

S1 E3 • La fiesta tragique

Danbei Makiba organizes a party at the ranch and invites Kouji and Duke Fleed. The latter has no time to eat anything because Vega attacks. Will he have the time to make it to Grendizer before the earth is ravaged? All bets are open... Source: tv.com

Première diffusion : 19 octobre 1975

S1 E4 • L'île de la peur

Gandal wants to discover the hiding place of Grendizer. So he launches a massive attack. Kouji tries to confront the enemies alone, but he only succeeds to crush himself on a deserted island. Finally, Duke Fleed makes it there and saves the day. Source: tv.com

Première diffusion : 26 octobre 1975

S1 E5 • Le traquenard de la mort

Kouji, Hikaru, Goro and Banta are taken hostage. Duke Fleed interrupts his siesta to free them. Source: tv.com

Première diffusion : 2 novembre 1975

S1 E6 • Attaque sur Perlepolis

Hikaru leaves for Tokyo with Banta. Their bus is attacked by a Saucer Beast. Kouji distracts the monster until Duke Fleed arrives since Grendizer has trouble to start up in winter. Source: tv.com

Première diffusion : 9 novembre 1975

S1 E7 • Le festin des loups

Gorman, from the fearsome Ruins' Division, attacks Grendizer that is powerless in front of the brutality and the agility of his enemy. Source: tv.com

Première diffusion : 16 novembre 1975

S1 E8 • Les radars se sont tus

Blacky sets a trap to Grendizer by hiding mines in a cloud of spatial dust. Kouji falls in the trap. Fortunately Duke Fleed helps him and destroys the Golgoth 8. Source: tv.com

Première diffusion : 23 novembre 1975

S1 E9 • Le camp de la lune noire

Kouji is captured with his UFO by the Vegans. Grendizer attacks the camp of the Black Moon to save him. Source: tv.com

Première diffusion : 30 novembre 1975

S1 E10 • L'espion qui venait de Véga

An inhabitant of the planet Ruby is contacted by Vega to explode the UFO carrier of Grendizer. The mission fails because of Duke Fleed and the Vegans try to kill the Rubinian. But Duke Fleed flies to his help. Source: tv.com

Première diffusion : 7 décembre 1975

S1 E11 • Le jour où le soleil s'arrêta

The Vegans plan is to bring Grendizer to the shadow of the moon during the eclipse because Grendizer's systems will shut down temporarily under it and then destroy it. Source: tv.com

Première diffusion : 14 décembre 1975

S1 E12 • Du sang sur la neige

Daisuke and Kouji are sent to investigate an avalanche and to find survivors. They find a girl named Miyuki who lost her memory. Back at the Space Science Lab she begins to remember how a saucer destroyed her home. Source: tv.com

Première diffusion : 21 décembre 1975

S1 E13 • Par le fer et par le feu

A new Vegan mecha comes to destroy Earth. It sucks power from the sun and burns everything in its path. Grendizer is damaged by it and has to withdraw. As the mecha attacks again Grendizer has to go to battle weaponless. Source: tv.com

Première diffusion : 28 décembre 1975

S1 E14 • Le jour du soleil levant

Boss, Nuke, and Mocha are in this episode. They are visiting their old friend Kouji Kabuto. The Vegans keep their eyes on a mysterious orange robot that is found skiing nearby. Commander Blacky orders the Minifo to follow and investigate it. Source: tv.com

Première diffusion : 4 janvier 1976

S1 E15 • Akerebe la Rouge

Commander Yara is forced to create a mecha that creates earthquakes and use it on the city Kanto. Source: tv.com

Première diffusion : 11 janvier 1976

S1 E16 • Le fiancé de la mort

A Vegan pilot lands near the Space Science Centre and makes Mr. Hayashi's fiance, Kaori, a spy for him. She takes Dr. Umon as a hostage. Source: tv.com

Première diffusion : 18 janvier 1976

S1 E17 • La chevauchée infernale

The Vegans begin building a base for their operations on Earth. The saucer "Giba Giba" begins to attack but Grendizer comes to save the day by saving a town and a mountain. Source: tv.com

Première diffusion : 25 janvier 1976

S1 E18 • Le nouveau temps des cavernes

Dr. Umon made a project so that Grendizer is able to launch without revealing his whereabouts to the enemy. Kabuto is in the control of the Vegans and fights Duke. Source: tv.com

Première diffusion : 1 février 1976

S1 E19 • Le village écrasé

The Vegans are causing a shower of asteroids heading towards Earth. The meteors are detected and Grendizer launches to intercept them before they hit land. Source: tv.com

Première diffusion : 8 février 1976

S1 E20 • Terre en danger

Daisuke gets the suspicion that the Vegans may be planning to pull the moon down to Earth. Duke Fleed launches Grendizer and follows Kouji who already went to explore the area of Mount Kirofoki. Source: tv.com

Première diffusion : 15 février 1976

S1 E21 • Les continents submergés

The Vegans plan to melt ice in the North Pole. This will cause the sea level to rise with catastrophic results to the shores on Earth. Source: tv.com

Première diffusion : 22 février 1976

S1 E22 • Les massacreurs du ciel

The Vegans are planning to steal Dr. Chibana's new device so that they can use it to silence Duke Fleed and his Grendizer. Source: tv.com

Première diffusion : 29 février 1976

S1 E23 • Le déluge des nouveaux mondes

The Vegans continue their attempts to discover Grendizer's secret hideout as they are sure that the Space Science Centre has something to do with it. Hikaru finds out who Daisuke really is. Source: tv.com

Première diffusion : 7 mars 1976

S1 E24 • L'exécuteur

Commander Whiter successfully sneaks into Earth as Dr. Space who is a well-known acquaintance of Dr. Umon and a reliable person so he can find Duke Fleed and kill him. Source: tv.com

Première diffusion : 14 mars 1976

S1 E25 • Les amoureux d'Euphor

Duke Fleed's childhood friends Naida, brainwashed by the Vegans, attempts to put a bomb on Grendizer but Duke stops her. Naida accuses Duke of being a traitor. Kouji attempts to pilot Grendizer but is almost killed. Source: tv.com

Première diffusion : 21 mars 1976

S1 E26 • Les bords de l'abîme

Dr. Umon sends Kouji and Hayashi on a mission in outer space to build a satellite station. At the same time, the Space Science Centre is surrounded by a huge Minifo saucer squadron. Source: tv.com

Première diffusion : 28 mars 1976

S1 E27 • Vaincre ou périr

Grendizer's delicate weapon systems malfunction and he finds himself struggling against the enemy. The Vegans arrive and descend upon the Center. Hikaru and Daisuke must fix Grendizer and save the Center. Source: tv.com

Première diffusion : 4 avril 1976

S1 E28 • Les nouveaux maîtres des ténèbres

General Zuril is a brilliant scientist who will try to find different ways of taking down Grendizer. Daisuke, Hikaru, and Goro are attacked by Vegans. Danbei puts on his gear and begins fighting them too. Source: tv.com

Première diffusion : 11 avril 1976

S1 E29 • L'oiseau de feu

Vegans shrink the cells of the living body to make Haruk become a young boy for a time so he can spy at Space Science Centre. Haruk and Goro become friends but later the effects of the shrinking begin to wear off so Haruk captures Goro. Source: tv.com

Première diffusion : 18 avril 1976

S1 E30 • La pierre de foudre

A strange rock full of radiation energy lands on Earth and Dr. Umon can't make much of this new phenomenon. At the same time, the Vegans discover this strong source of energy and put it to use in their next saucer beast. Source: tv.com

Première diffusion : 25 avril 1976

S1 E31 • Don Quichotte de l'Espace

The Boss, Kouji, and Bunta go to the Boss Borot to begin their counterattack of the Vegan attack on them but will face some technical difficulties. Grendizer gets into some trouble while trying to help them but the Boss Borot will help Grendizer in the funniest way but will lose his Boss Spazer. Source: tv.com

Première diffusion : 2 mai 1976

S1 E32 • La reine fantôme

The Vegans send a woman by the name of Marian who looks identical to Duke Fleed's mother who passed away on planet Fleed. Source: tv.com

Première diffusion : 9 mai 1976

S1 E33 • Les ailes de la mort

The Vegans send a bird named "Zari Zari" to destroy Grendizer, but Duke remembers a similar bird from his home planet Fleed and will use this knowledge to go and finish it off. Source: tv.com

Première diffusion : 16 mai 1976

S1 E34 • Le mercenaire de l'oppression

Vega promised Commander Gauss that if he kills Duke Fleed then Vega would spare the Wolf Planet from Vegan brutality. Source: tv.com

Première diffusion : 23 mai 1976

S1 E35 • Le premier raid

General Gandal assigns Commander Beetle with his saucer beast to attack the Space Science Centre from underground. Meanwhile, Kabuto Kouji's new Double Spazer ship has just been completed and Kouji is ready to be air-born again. Source: tv.com

Première diffusion : 30 mai 1976

S1 E36 • L'invincible du cosmos

Dr. Umon calls Daisuke and Kouji to show them the way that Grendizer and Double Spazer can unite together and fly. The objective of this is to minimize the need for Grendizer to have to lock in and out of Spazer as these are Grendizer's weakest moments and he is helpless in them. Source: tv.com

Première diffusion : 6 juin 1976

S1 E37 • Une étoile est morte

The Vegan plan is to steal a huge capsule full of Super Uranium from Earth. Vegan forces are dispatched immediately to do just that. Source: tv.com

Première diffusion : 13 juin 1976

S1 E38 • Les faiseurs de ténèbres

Hikaru becomes a pilot. Duke Fleed faces another Vegan saucer beast loaded with Vegatron rays, and Kouji nearly gets captured by the Minifo after gathering the energy but manages to escape very injured. Source: tv.com

Première diffusion : 20 juin 1976

S1 E39 • La patrouille des aigles

Danbei tells Daisuke that his daughter is outstanding and capable of helping him and Kouji. Daisuke disagrees insisting that war and sport are two different things. Finally Daisuke will allow Hikaru to be part of the team after her vital help. Source: tv.com

Première diffusion : 27 juin 1976

S1 E40 • Le réveil des volcans

A series of explosions start to occur under the sea and General Zuril wastes no time in discovering that this is raw Uranium. Saucer beast "Boi Boi" is launched to go and get this energy as this saucer beast naturally collects Uranium. At the same time Dr. Umon is alerted by these explosions which are close to an island with a Uranium capsule. Source: tv.com

Première diffusion : 4 juillet 1976

S1 E41 • Le baptême du feu

Hikaru loses her consciousness during training and Duke Fleed gets injured and his old wound gets worse. The Vegans begin their attack and Daisuke goes to the battle even though he is injured. Source: tv.com

Première diffusion : 11 juillet 1976

S1 E42 • Péril en la demeure

Dr. Umon's Space Science Center is undergoing some major changes to keep up with Vega's attacks. A super computer is installed in the base, and turning it on will be the final step. The Vegans plan to get rid of the base and leave Grendizer without a place to hide. Source: tv.com

Première diffusion : 18 juillet 1976

S1 E43 • La victoire des aigles

A strange meteor heads slowly towards Earth and Kouji will go unilaterally and see what it's all about. After nearly getting blinded by a ray that came out of the meteor, Kouji's Double Spazer begins to exit the Earth's atmosphere. Source: tv.com

Première diffusion : 25 juillet 1976

S1 E44 • Quand les chiens sont lâchés

A young man by the name of Hiyoshi is very interested in searching for ancient evidence to prove that spacemen came to Earth in the past. He goes to look at walls in a near-by cave for ancient scripts to prove his theory, but the villagers think he is crazy. Hundreds of years ago, the Vegans had sent some of their people to Earth. There still is a metal on the wall that they used for landing, and this metal cannot be detected by the radar. Source: tv.com

Première diffusion : 1 août 1976

S1 E45 • Des fourmis et des hommes

With his telescope, Goro spots a meteor that splits in two with each piece landing in a different mountain. These actually contain eggs of the Vegan ants. When Goro tells everyone about it he is not taken seriously. Soon Grendizer and Drill Spazer will unite to face the new danger. Source: tv.com

Première diffusion : 8 août 1976

S1 E46 • Le ballet des requins

Vegan robot sharks land one night and are hidden in a public pool for their next plan. Kouji finds himself a hostage of the Vegans who tell him about their plans to take all of the people as hostages. Source: tv.com

Première diffusion : 15 août 1976

S1 E47 • Le lac embrasé

Danbei induces a race between Daisuke and Kouji. Kouji takes it to seriously. The group goes camping near a lake. Vegans begin to descent in the lake and then the Space Science Center suddenly gets attacked by missiles from the near-by lake where the Vegans stay hidden. Source: tv.com

Première diffusion : 22 août 1976

S1 E48 • Un monde en fusion

Duke Fleed unites with Kouji and the Drill Spazer to chase a Vegan saucer beast. The Vegans make an acid swamp to sink the Space Science Center. Source: tv.com

Première diffusion : 29 août 1976

S1 E49 • La dernière survivante

Maria tries to kill Duke, thinking the person who pilots Grendizer is evil but during the fight Duke's necklace falls off and the siblings discover who each other is. Source: tv.com

Première diffusion : 5 septembre 1976

S1 E50 • L'aigle à quatre têtes

Maria, the new member on the team, is able to control Grendizer and Marine Spazer. She also has the ability to foresee events so she is able to save Kouji from Vegans. Source: tv.com

Première diffusion : 12 septembre 1976