The idea of the series is based on the conflict between good and evil, evil represents the great Vega, an evil space commander who lives in his spaceship in outer space whose goal is to control all the planets of the universe, Vega uses in his attack on other planets robots and huge robots, and one day Vega the Great invades the peaceful planet Fled, but the Duke of Fled, the son of the king of the planet Fled, manages to escape by stealing Grendizer, who was developing on the scientifically advanced planet Fleed and leads Grendizer To outer space until he falls days later tired on planet Earth and is found by Dr. Amon, head of the Space Research Center in Japan, and adopts the Duke of Fled without revealing the truth of his personality and calls him Daisuke, the events of the series begin when Vega the Great prepares his plan to invade Earth and Vega is surprised by the presence of Grendizer on Earth.
Kouji Kabuto and Duke Fleed
Feb 27, 1979
Koji Kaboto tries his OVT that he made with pieces of mecano. 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). Koji does not actually know that Duke Fleed is the prince of Fleed.
Oh Our Green Land
Mar 6, 1979
Koji discovers the identity of the Duke Fleed, but has no time to ask questions because Vega attacks. Duke Fleed and Koji unite their power and push back the enemy
The White Birch Plantation Is In Danger
Mar 13, 1979
Dampee Makeeba organizes a party at the ranch and invites Koji and Duke Fleed. The latter has no time to eat anything because Vega attacks.
Let It Fall Gol Gol
Mar 20, 1979
Gandal wants to discover the hiding place of Grendizer. So he launches a massive attack. Koji 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.
Love In The Evening Of Glory
Mar 27, 1979
Koji, Hikaro, Goro and Bunta are taken in hostage. Actarus interrupts his siesta to free them.
The Warrior Spirit Heads Into Space
Apr 3, 1979
While on a trip to downtown, Hikaro and the others are taken hostages by the Vgean monster.
Even If I Lose My Life
Apr 10, 1979
King Vega sends one of his commanders to join in earth's invasion
What A World Of Peace This Is
Apr 17, 1979
Blaki sets a trap to Grendizer by hiding mines in a cloud of spatial dust. Koji falls in the trap. Fortunately Duke Fleed helps him and destroys the Golgoth 8.
Overcome Uncontrolled Anger
Apr 24, 1979
King Vega again sends one of his commanders, this time a female, to join in Earth's invasion.
Longing For My Parents
May 1, 1979
A young boy makes contact with the Vegans and agrees to run errands in exchange for a trip to outer space.
The Villains Intercept The Blazing Sun
May 8, 1979
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.
A Girl Crossing The Rainbow Bridge
May 15, 1979
Daisuke and Kogi are sent to investigate an avalanche and to find survivors. They find a girl named Mirana who lost her memory. Back at Space Science Centre she begins to remember how a saucer destroyed her home.
Grendizer Is In Danger
May 22, 1979
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.
New Year's At Boss Bart's
May 29, 1979
Boss, Nuké, and Mocha are in this episode. They are visiting their old friend Koji Kabuto. The Vegans keep their eye on a mysterious orange robot that is found skiing near-by. Commander Blacki orders the Minifo to follow it and investigate.
To My Dear Mother
Jun 5, 1979
Commander Yara is forced to create a machine that creates earthquakes and use it on the city Kanto.
Triumph Of Love
Jun 12, 1979
A Vegan pilot lands near the Space Science Centre and makes Mr. Hayashi's fiancé, Kaori, a spy for him. She takes Dr. Umon as a hostage.
Saving A Small Life
Jun 19, 1979
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.
The Secret Path Number Seven
Jun 26, 1979
Dr. Umon made a project so that Grendizer is able to launch without revealing his whereabouts to the enemy. Kabuto is control by the Vegans and fights Duke.
Scary Atmospheric Minerals
Jul 3, 1979
A huge meteor is headed straight gives order to fire on the meteor and change its course to head for the planet Earth. The meteors are detected and Grendizer launches to intercept them before they hit land.
Surviving The Snow-Capped Mountain
Jul 10, 1979
Daisuke gets the suspicion that the Vegans may be planning to pull the moon down to Earth. Duke Freed launches Grendizer and follows Koji who already went to explore the area of Mount Kirofoki.
Dawn Rise Day
Jul 17, 1979
Daisuke has to save one of the horses in the ranch from sickness while finding time to fight evil Vegan army.
Flower Courage
Jul 24, 1979
The Vegans get wind of a device and plan to steal it
Hikaru Cries Across The Waterfall
Jul 31, 1979
The most prized horse in the ranch escapes and the search ensues. Meanwhile the Vegans are again searching for Grendizer's hideout.
Duke Fleed Is In Danger
Aug 7, 1979
Another Vegan commander is sent on an earthbound mission.
Flower Of Love Bloomed In The Sky
Aug 14, 1979
A vehicle crash-lands in a forest near the ranch, piloted by a beautiful lady.
The Successive Attacks
Aug 21, 1979
The space science center undertakes a rocket ship and satellite station project orbiting earth.
Grendizer Counterattack
Aug 28, 1979
Grendizer is in a bind but Daisuke extricates successfully!
Devil'S Bell In The Dark
Sep 4, 1979
King Vega sends an ally to assist Gandal in invading Earth.
Farewell To A Friend Coming From The Space
Sep 11, 1979
Vegans shrink the cells of the living body to make Harook become a young boy for a time so he can spy Space Science Centre. Harrok and Goro become friends but later the effects of the shrinking begin to wear off so Harook captures Goro.
The Story Of The Red Spot
Sep 18, 1979
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.
A New Friendship
Sep 25, 1979
The Boss, Koji, 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.
A Rebellion Against The Mother
Oct 2, 1979
The Vegans send a woman by the name of Marian who looks identical to Duke Freed's mother who passed away on planet Freed.
Death Of A New Weapon
Oct 9, 1979
The Vegans send a bird named "Zari Zari" to distroy Grendizer, but Duke remember a similar bird from his home planet Fleed and will use this knowledge to go and finish it off.
Tear Of The Wolf
Oct 16, 1979
Vega promised Commander Gos that if he kills Duke Freed then Vega would spare the Wolf Planet from Vegan brutality.
Flying In The Space
Oct 23, 1979
General Gandal assigns Commander Beetle with his saucer beast to attack the Space Science Centre from underground. Meanwhile, Koji Kabuto's new Double Spazer ship has just been completed and Koji is ready to be air-born again.
A Covenant In The Space
Oct 30, 1979
Dr. Umon calls Daisuke and Koji 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.
Connect Your Life With Wings
Nov 6, 1979
The Vegan plan is to steal a huge capsule full of Super Uranium from Earth. Vegan forces are dispatched immediately to do just that.
Tearful Adhesion
Nov 13, 1979
Hikaru becomes a pilot. Duke Freed faces another Vegan saucer beast loaded with Vegatron rays, and Koji nearly gets captured by the Minifo after gathering the energy but manages to escape very injured.
Surprise Attack By Vega'S Forces
Nov 20, 1979
Danbi tells Daisuke that his daughter is outstanding and capable of helping him and Koji. 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.
A Heavy Impact, The Sea Is On Fire
Nov 27, 1979
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.
Launching The Marine Spazer
Dec 4, 1979
Hikaru loses her consciousness during training and Duke Freed gets injured and his old wound gets worse. The Vegans begin their attack and Daisuke goes to the battle even though he is injured.
Emergency Situation At The Space Research Center
Dec 11, 1979
Dr. Umon's Space Science Centre 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.
Meteor Deserted Island
Dec 18, 1979
A strange meteor heads slowly towards Earth and Koji will go unilaterally and see what it's all about. After nearly getting blinded by a ray that came out of the meteor, Koji's Double Spazer begins to exit the Earth's atmosphere.
Celebration Night
Dec 25, 1979
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.
Burn, You Drill Spazer
Jan 1, 1980
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.
Sharks Falling From The Sky
Jan 8, 1980
Vegan robot sharks land one night and are hidden in a public pool for their next plan. Koji finds himself a hostage of the Vegans who tell him about their plans to take all of the people as hostages.
The Lake Brings Out The Fire Of Hell
Jan 15, 1980
Danbi induces a race between Daisuke and Koji. Koji takes it to seriously. The group goes camping near a lake. Vegans begin to descent in the lake and then the Space Science Centre suddenly gets attacked by missiles from the near-by lake where the Vegans stay hidden.
Demons From The Depths Of The Earth
Jan 22, 1980
Duke Freed unites with Koji and the Drill Spazer to chase a Vegan saucer beast. The Vegans make an acid swamp to sink the Space Science Centre.
I Saw My Brother In The Red Sunset
Jan 29, 1980
Maria tries to kill Duke, thinking the person who pilots Grendizer is evil but during the fight Duke necklace falls and the siblings discover who each other is.
Get Rid Of Kouji Kabuto
Feb 5, 1980
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 Koji from Vegans.
The Massive Approach
Feb 12, 1980
The Vegan plan is to make this moon enter the Earth's atmosphere and cause a catastrophe. The battle between Vegans and Grendizer takes longer than anticipated and it is too late for Grendizer to fire the missile.
The Big Move Of Vega'S Army
Feb 19, 1980
General Zuril orders a powerful attack with his latest saucer beast "Domo Domo" to defeat Grendizer before General Dantos gets the chance.
Fight To The Death With The Vega Monster
Feb 26, 1980
Duke Freed will go after Hikaru who is hostige on foot not using Grendizer and help her escape from the giant beast while Koji takes Grendizer back for repairs.
Terror In The Depths Of The Sea
Mar 4, 1980
The Vegan built a base underwater knowing that Grendizer cannot withstand depths great than 400 meters.
The Terrifying Balloon
Mar 11, 1980
Vegans gather some fuel from an industrial island. General Zuril instructs General Gandal on what to do but he doesn't listen and he gets into trouble because his unilateral action revealed that the Vegans have a base on Earth.
A Fake Doctor Causes A Crisis
Mar 18, 1980
Dr. Umon launches a satellite into space to track Vegan movements on Earth.
The Savage Beetle
Mar 25, 1980
Koji and Maria are on their vacation in Tokyo, they get into a fight as usual and split up.
Fake Grendizer Appearance
Apr 1, 1980
The Vegans make a false Grendizer that attacked Earth people so the real Grendizer will be hated.
Deceived Little Fighters
Apr 8, 1980
A group of Vegan kids come to Earth and hold hostages the people inside the observatory.
Tokyo Castle Will Be Destroyed At 7 P.M
Apr 15, 1980
The Vegans attract a huge number of rats to use for their next mission. These rats are implanted with Vegatron bombs for the purpose of blowing up different targets in Tokyo.
Pegastros's Plan
Apr 22, 1980
Toko 1, Toko 2, Toko 3, and Toko 4 are Vegan agents taking appearances of other people trying to distroy Space Science Centre
Day Of The Swans Came
Apr 29, 1980
Swans are implanted with Vegatron missiles for the next Vegan plan. Duke Freed is forced to kill the swans and must head to the city and face saucer beast "Go Go".
Kirika Disappears Into The Snow
May 6, 1980
Kirika, a Vegan scientist, is sent to freeze with her new weapon Duke Fleed.
Five Minutes Before Tokyo Is Destroyed
May 13, 1980
The Vegans invent a bomb and General Gandal threatens to blow up Tokyo is Grendizer does not surrender.
Koji Kabuto In A Heroic Stance
May 20, 1980
The Vegans fire a big group of missiles towards Tokyo. The Grendizer Team launches to destroy the missiles before they hit the city.
The Death 400 Meters Below Sea Level
May 27, 1980
Maria in the Marine Spazer gets stuck in a giant seaweed trap and Koji swims to the bottom of the sea to help her.
Blow Up The Submarine Base
Jun 3, 1980
General Zuril launches an attack on the Space Science Centre with air balloon bombs. Koji gets caught by the Vegans and held as hostage.
Maria In The Blizzard
Jun 10, 1980
A young man from Fleed named Kane is a loyal soldier of the Vegans. He comes to Earth to fight. Maria tries to face him and they both crash. Soon she will realize that Kane was her childhood friend from
Zourel Is In Distress
Jun 17, 1980
The son of Zouril,Zuril Jr. wants to fight Grendizer but Zouril doesn't want him to. Zuril Jr. sacrifice himself for his father in the end
Goodbye, King Fleed
Jun 24, 1980
Maria has a nightmare about her father being hostage. She goes to the cave where she saw her father in her dream along with Koji where she learns the truth.
Fairwell, Best Friend
Jul 1, 1980
Moros, Duke's best friend from Freed was made to believe that Duke Freed destroyed Freed by Vega and now comes to Earth to kill Duke.
A Citizen From A Distant Planet
Jul 8, 1980
Princess Rubina, Duke Fleed's fiancé comes to Earth to tell Duke that his planet is no longer polluted but dies after being shoot by one of Vega's generals.
In Honor Of This Wonderful Land
Jul 15, 1980
King Vega prepares to attack Earth but Duke and company are ready to stop him with the help of Grendizer and Spazers.
Shine Forever, Two Stars
Jul 22, 1980
Duke finally destroys King Vega but he and Maria must return to planet Fleed.
