Koji Kaboto tests his own invention, a device crafted from meccano parts. While airborne, he finds himself beset by the craft of Vega. Fortunately, Duke Fleed arrives in time to avert disaster, though not with undue haste. Koji remains unaw…

The truth of Duke Fleed's identity came to Koji's understanding, though he had no opportunity to voice his surprise. Before any questions could be asked, Vega launched an attack. In that instant, Duke Fleed and Koji joined their forces, rep…

Makeeba, a dampee, throws a party at the ranch, extending an invitation to Koji and Duke Fleed. But Duke finds himself with no opportunity for a meal, as Vega launches an attack. Will he manage to reach Grendizer before the planet is devast…

Gandalf sought the hidden lair of Grendizer, and unleashed a formidable assault in pursuit. Koji attempted to face the adversaries alone, but his efforts culminated only in his being shipwrecked upon a desolate island. Ultimately, Duke Flee…

Koji, Hikaro, Goro, and Bunta are taken captive. Actarus, roused from his repose, intervenes to liberate them.

Hikaro journeyed to Perlepolis with Bunta. Their bus was ambushed by a creature from Vega. Koji provided a diversion, allowing Duke Fleed to arrive, as Grendizer was experiencing difficulty starting in the winter chill.

From the dreaded Ruins Division, Janus assailed Grendizer, who found himself helpless before the brutal force and swift movements of his adversary.

Blaki laid a snare for Grendizer, concealing mines within a cloud of spatial dust. Koji fell victim to the trap. Thankfully, Duke Fleed intervened, dismantling the Golgoth 8.

The Vegans have captured Koji and his spacecraft. In response, Grendizer launches an attack on the Black Moon's encampment, determined to rescue him.

A resident of the planet Rubi received a communication from Vega, tasking them with destroying the Grendizer carrier spacecraft. The mission proved unsuccessful, thwarted by Duke Fleed, and the Vegans then attempted to eliminate the Rubinia…

The vegans intend to maneuver Grendizer into the moon's shadow during the eclipse. They believe that the celestial event will temporarily disable Grendizer’s systems, allowing them to then dismantle the powerful machine.

Daisuke and Kogi were dispatched to the site of an avalanche, tasked with locating any survivors. Their search led them to a young woman named Mirana, who suffered from amnesia. Once back at the Space Science Centre, Mirana began to experie…

A formidable vegan mecha has emerged, intent on Earth's destruction. It drains solar energy, leaving a trail of scorched earth in its wake. Grendizer, weakened by the assault, is forced to retreat. But as the mecha renews its attack, Grendi…

The episode features Boss, Nuké, and Mocha as they visit their old friend, Koji Kabuto. Meanwhile, the Vegans are observing a peculiar orange robot discovered skiing nearby. Commander Blacki then directs the Minifo to track the robot and co…

Commander Yara faced an impossible choice: to build a war machine capable of generating seismic tremors, and to deploy it against the city of Kanto. The weight of this decision pressed upon her, a grim necessity born of circumstance.

The vegan pilot touched down near the Space Science Centre and, seeking leverage, enlisted Mr. Hayashi’s fiancée, Kaori, as an agent. Her capture of Dr. Umon served as a means of ensuring her cooperation.

The vegans commenced establishing a foothold for their endeavors upon Earth. Meanwhile, the vessel "Giba Giba" initiated an assault, but Grendizer intervened, averting disaster by safeguarding both a town and a mountain.

Dr. Umon devised a project to allow Grendizer to launch undetected by his adversaries. Meanwhile, Kabuto is controlled by the Vegans and engages in combat with Duke.

A colossal meteor hurtles directly towards Earth. Command is given to engage, to alter its trajectory and guide it toward the planet. The meteor is detected, and Grendizer launches to intercept it before impact.

A disquieting notion took hold of Daisuke: the Vegans might be orchestrating a descent of the moon upon Earth. Duke Freed, acting on this unsettling suspicion, launched Grendizer and pursued Koji, who had already ventured into the vicinity …

The group advocating for veganism intends to melt the ice at the North Pole. Such an action would lead to a rise in sea levels, with devastating consequences for coastlines worldwide.

A faction identifying as vegan intends to pilfer Dr. Chibana’s latest invention, aiming to exploit its capabilities to neutralize Duke Freed and his Grendizer.

Driven by the conviction that the Space Science Centre holds the key to Grendizer’s hidden sanctuary, the Vegans persist in their efforts to locate it. Meanwhile, Hikaru uncovers a significant truth about Daisuke's identity.

Commander Witer infiltrated Earth under the guise of Dr. Space, a figure familiar to Dr. Umon and considered trustworthy. His mission: to locate Duke Fleed and eliminate him.

Duke Freed's childhood friend, Nayda, now indoctrinated by the Vegan faction, makes a desperate attempt to detonate a bomb aboard Grendizer. Duke intervenes, preventing the explosion. Nayda then accuses him of betrayal. Meanwhile, Koji atte…

Dr. Umon dispatched Koji and Hayashi on a mission to construct a satellite station in the expanse of space. Simultaneously, the Space Science Centre found itself encircled by a formidable squadron of Minifo saucers.

A critical failure in Grendizer’s intricate weaponry leaves him battling against mounting odds. As the Vegan forces arrive, they assault the Center with relentless force. It falls to Hikaru and Daisuke to repair Grendizer and safeguard the …

General Zuril, a scientist of exceptional intellect, will devise new strategies to defeat Grendizer. Meanwhile, Daisuke, Hikaru, and Goro find themselves under attack by Vegans, and Danbi activates his equipment, joining the fray.

Through methods involving the cellular reduction of living organisms, vegans temporarily revert Harook to a childlike state, granting him access to the Space Science Centre. During this time, Harook and Goro forge a friendship. However, as …

A peculiar stone, humming with radiated energy, impacted upon Earth, leaving Dr. Umon perplexed by the unusual occurrence. Simultaneously, the Vegans detected this potent energy source and integrated it into the design of their latest sauce…

Koji, the Boss, and Bunta journey to the Boss Borot, poised to initiate their counteroffensive against the Vegan assault. However, they encounter unforeseen technical complications. As they attempt to assist, Grendizer finds himself in a pr…

A delegation from the Vegan Collective dispatched a woman named Marian, bearing a striking resemblance to the late Duchess Freed's mother, who had died on the planet Freed.

The Vegans dispatch a bird named Zari Zari with the intent to destroy Grendizer. But Duke recalls a creature of similar design from his homeworld, Fleed, and resolves to exploit that knowledge to defeat it.

Vega made a solemn promise to Commander Gos: should he succeed in killing Duke Freed, Vega would spare the Wolf Planet from the Vegan's ruthless hand.

General Gandalf tasked Commander Beetle with deploying his saucer-shaped beast for a subterranean assault on the Space Science Centre. Simultaneously, Koji Kabuto’s newly constructed Double Spazer was finished, and he prepared for flight on…

Dr. Umon contacts Daisuke and Koji, intending to demonstrate the method by which Grendizer and Double Spazer can combine for flight. The purpose of this exercise is to lessen the necessity of Grendizer disengaging from Spazer, as these tran…

The Vegan faction intends to seize a substantial quantity of Super Uranium from the planet. Forces aligned with the Vegan cause are being deployed without delay to accomplish this objective.

Hikaru takes to the skies as a pilot. Duke Freed confronts yet another Vegan saucer beast, this one armed with Vegatron rays. Meanwhile, Koji, having gathered the necessary energy, narrowly avoids capture by the Minifo, though not without s…

"Your daughter is remarkably talented," Danbi said to Daisuke, "and could be a great asset to you and Koji." Daisuke shook his head, firm in his conviction that war and sport existed in separate realms. However, swayed by Hikaru's crucial a…

Underwater detonations began, and General Zuril swiftly determined the source: raw uranium. A saucer-shaped craft, known as Boi Boi, was dispatched to retrieve the energy, as the vessel possessed a natural affinity for collecting uranium. S…

During training, Hikaru loses consciousness, and Duke Freed sustains an injury that aggravates a pre-existing wound. As the Vegans launch their assault, Daisuke presses on toward the conflict, despite his own injuries.

The Space Science Centre under Dr. Umon is undergoing significant modifications in response to Vega’s escalating assaults. A powerful supercomputer has been installed within the facility, its activation representing the final stage of these…

A peculiar meteor drifted slowly toward Earth, and Koji decided to investigate it alone. After nearly being blinded by a beam emanating from the celestial object, Koji’s Double Spazer began its ascent out of the planet’s atmosphere.

Hiyoshi, a young man consumed by a singular pursuit, sought proof of extraterrestrial visitation to Earth. He ventured into a nearby cave, hoping to discover ancient inscriptions that would validate his theory. The villagers, however, regar…

Through his telescope, Goro observed a meteor shower, each fiery fragment cleaving further as it descended. Each piece impacted a separate mountain peak, revealing within them the eggs of the Vegan ants. When Goro shared his discovery, he w…

On a moonless night, vegan robot sharks arrived and sought refuge within a public swimming pool, concealing themselves for purposes yet unknown. Koji found himself taken captive by these unusual beings, who revealed a disturbing scheme: to …

Danbi’s actions sparked a competition between Daisuke and Koji, a rivalry Koji approached with undue seriousness. The group subsequently journeyed to a lakeside for a camping trip. It was then that the Vegans began to emerge from the depths…

Duke Freed finds himself allied with Koji and the Drill Spazer, embarking on a pursuit of a saucer-shaped creature of the Vegan race. The Vegans, in their endeavors, construct an acidic swamp with the intention of submersing the Space Scien…

Driven by a conviction that the pilot of Grendizer embodied an insidious evil, Maria sought to end his life. But amidst the fierce battle, Duke’s necklace was dislodged, and in its fall, the siblings discovered a truth about themselves, a r…

Maria, the newest addition to the team, possesses a remarkable gift: the ability to pilot both Grendizer and the Marine Spazer. Furthermore, she has a preternatural foresight, allowing her to anticipate danger and, on one occasion, rescue K…

The Vegan faction intends to guide this moon into Earth's atmosphere, triggering a catastrophic event. The conflict between the Vegans and Grendizer has stretched on longer than planned, and now Grendizer finds himself without the opportuni…

General Zuril commanded a formidable assault, deploying his newest saucer beast, the "Domo Domo," with the singular objective of defeating Grendizer before General Dantos could intervene.

Duke Freed will pursue Hikaru, who is being held captive on the ground, foregoing the use of Grendizer to aid her escape from the colossal creature. Meanwhile, Koji will return Grendizer for necessary repairs.

The vegan established a submerged base, calculating that Grendizer could not endure depths exceeding four hundred meters.

The vegans drew sustenance from the heart of the industrial complex. General Zuril gave General Gandal his orders, but the latter disregarded them, and his unauthorized action exposed the vegans’ hidden base on Earth.

Dr. Umon has initiated a project to monitor global vegan activity, deploying a satellite for this purpose.

During their trip to Tokyo, Koji and Maria found themselves in a familiar argument, leading them to part ways.

Driven by deceit, the Vegans fabricated a counterfeit Grendizer, unleashing it upon Earth to cultivate animosity towards the genuine article.

A collective of young vegans arrived on Earth and took the occupants of the observatory captive.

The vegans orchestrated a large gathering of rats, intending to deploy them in an upcoming operation. These rodents were fitted with Vegatron bombs, designed for use against various targets throughout Tokyo.

Operating under the guise of ordinary shops – Toko 1, Toko 2, Toko 3, and Toko 4 – were agents of a vegan organization. Their true purpose was to sabotage the Space Science Centre.

The swans have been fitted with Vegatron missiles, a crucial component of the impending Vegan plan. Duke Freed is burdened with the grim task of eliminating the birds, then must journey to the city to confront the saucer beast known as "Go …

Scientist Kirika, a committed vegan, is dispatched on a mission involving cryogenic preservation, accompanied by her newly assigned weapon, Duke Fleed.

A faction of vegans has devised a weapon, and General Gandal issued a dire ultimatum: destroy Tokyo should Grendizer fail to yield.

A barrage of missiles hurtled toward Tokyo, launched by the Vegan forces. In response, the Grendizer Team mobilized, their mission to intercept and neutralize the projectiles before they reached their target.

While exploring the ocean depths aboard the Marine Spazer, Maria finds herself ensnared in a colossal net of seaweed. Recognizing her distress, Koji descends to the seabed to assist her.

General Zuril initiated an assault on the Space Science Centre, employing aerial bombs delivered by air balloons. During the attack, Koji was captured by the Vegans and taken captive.

Kane, a young man hailing from the planet Freed, is a devoted soldier of the Vegan forces. He arrives on Earth prepared for war. There, he encounters Maria, and their paths collide in a sudden crash. It will not be long before she recognize…

Zouril Jr., son of Zouril, yearned for a confrontation with Grendizer, a desire his father vehemently opposed. Ultimately, Zouril Jr. made the ultimate sacrifice to protect his father.

A nightmare grips Maria: her father is held captive. Drawn by the dream's unsettling imagery, she seeks out the cave where she last saw him, accompanied by Koji. There, amidst the shadows and echoes of her subconscious, she confronts a trut…

Moros, Duke’s closest companion from Freed, had been led to believe that Duke Freed was responsible for Freed’s destruction at the hands of Vega. Now, he has come to Earth with the intent to kill Duke.

Princess Rubina, betrothed to Duke Fleed, arrived on Earth with grave news. She carried a message: the Duke’s planet, once blighted by pollution, was now succumbing to a final demise. The cause? A single shot fired by a general of Vega’s fo…

King Vega makes preparations for an assault on Earth, but Duke and his allies stand ready to thwart his plans, aided by the might of Grendizer and the Spazers.

Duke achieved the decisive defeat of King Vega, yet victory offered little respite. He and Maria were compelled to return to the world of Fleed.