Movies like Grendizer, Getter Robo G, Great Mazinger: Decisive Battle! The Great Sea Monster (1976)
The best movies like Grendizer, Getter Robo G, Great Mazinger: Decisive Battle! The Great Sea Monster (1976) are Mazinger Z vs The Great Dark General (1974), Godzilla: The Planet Eater (2018) and Gurren Lagann The Movie: Childhood's End (2008). If Grendizer, Getter Robo G, Great Mazinger: Decisive Battle! The Great Sea Monster hooked you with its action and adventure, these 30 similar films are what to watch next, and every pick says why it matches.
Quick picks
- Highest ratedGodzilla vs. Kong (2021)7.5/10 from 10,934 votes
- NewestKaiju No. 8: Mission Recon (2025)Released 2025
- In JapaneseMazinger Z vs The Great Dark General (1974)Also in Japanese
Mazinger Z vs The Great Dark General (1974)
Kouji and his friends have defeated Dr. Hell and are now enjoying a break, but suddenly a strange prophet appears and warns everyone of an oncoming danger, mechanical beasts never seen before start appearing all around the world wrecking havoc. Its up to Kouji and his Mazinger Z to stand up to this threat but it seems he is vastly outnumber and outmatched.
Why it matches: Recommended by TMDB viewers · both animation & action
Absolute CinemaMovies like thisGodzilla: The Planet Eater (2018)
With no means for defeating Godzilla Earth, mankind watches as King Ghidorah, clad in a golden light, descends on the planet. The heavens and earth shake once again as the war moves to a higher dimension.
Why it matches: Recommended by TMDB viewers · both animation & action
Popcorn FlickMovies like thisGurren Lagann The Movie: Childhood's End (2008)
Simon and Kamina live in an underground city monitored by the village chief. When Simon stumbles upon an artifact and beastmen invade from the surface, Simon and Kamina rebel against them.
Why it matches: Recommended by TMDB viewers · both action & animation
Worth the HypeMovies like thisMazinger Z: Infinity (2017)
When the evil Dr. Hell attacks the Earth, the mighty giant mecha Mazinger Z is formed to stop him.
Why it matches: Recommended by TMDB viewers · both action & animation
Worth the HypeMovies like thisGodzilla vs. SpaceGodzilla (1994)
A mysterious extraterrestrial being resembling Godzilla rapidly approaches Earth. The monster, dubbed SpaceGodzilla, lands to challenge the King of the Monsters.
Why it matches: Recommended by TMDB viewers · both action & adventure
Popcorn FlickMovies like thisGiant God Warrior Appears in Tokyo (2012)
The short focuses on the God Warrior from Nausicaa of The Valley of The Wind (1984). Super-powered bio-weapons in ceramic armor begin attacking Tokyo, annihilating human civilization.
Why it matches: Recommended by TMDB viewers · both action & animation
Popcorn FlickMovies like thisGodzilla vs. Megalon (1973)
Inventor Goro Ibuki creates a humanoid robot named Jet Jaguar. It is soon seized by an undersea race of people called the Seatopians. Using Jet Jaguar as a guide, the Seatopians send Megalon as vengeance for the nuclear tests that have devastated their society. Oh and Godzilla is there to
Why it matches: Recommended by TMDB viewers · both action & adventure
Popcorn FlickMovies like thisCode Geass: Lelouch of the Rebellion I - Initiation (2017)
The world is at war. Lelouch Lamperouge, an exiled prince, encounters a strange girl known as C.C., who gifts him with a great power. With this ability, Lelouch can get anyone to do as he wills. But the power of Geass: is it a blessing…or a curse?
Why it matches: Recommended by TMDB viewers · both animation & action
Worth the HypeMovies like thisGodzilla vs. Kong (2021)
In a time when monsters walk the Earth, humanity’s fight for its future sets Godzilla and Kong on a collision course that will see the two most powerful forces of nature on the planet collide in a spectacular battle for the ages.
Why it matches: Recommended by TMDB viewers · both action & adventure
Worth the HypeMovies like thisCode Geass: Akito the Exiled 4: Memories of Hatred (2015)
While W-0 is away, Leila and the remaining crew at base find themselves surrounded by Britannian Knightmares. Piloting the Vercingetorix, Shin Hyuuga leads the enemy charge, having usurped the position of Grand Master in the Knights of St. Michael. With her core members unavailable, it's up to Leila to protect her comrades, but this may be much tougher than she realizes: a spy lurking among them is finally ready to reveal himself. Left with no choice but to surrender, Leila arranges a meeting with Shin in order to ensure the safety of her squad. But as negotiations begin to fall apart, Akito and an unexpected ally return in the nick of time to turn things around.
Why it matches: Recommended by TMDB viewers · both action & animation
Popcorn FlickMovies like thisGigantis, the Fire Monster (1959)
A prehistoric monster called Gigantis emerges alongside another creature named Angurus.
Why it matches: Recommended by TMDB viewers · both action & adventure
Popcorn FlickMovies like thisPacific Rim (2013)
Using massive piloted robots to combat the alien threat, Earth's survivors take the fight to the invading alien force lurking in the depths of the Pacific Ocean. Nearly defenseless in the face of the relentless enemy, the forces of mankind have no choice but to turn to two unlikely heroes who now stand as Earth's final hope against the mounting apocalypse.
Why it matches: Recommended by TMDB viewers · both action & adventure
Worth the HypeMovies like thisTransformers: Beginnings (2007)
On their home planet of Cybertron, the Autobots and Decepticons are involved in an explosive battle over the coveted AllSpark. With the fate of the universe at stake, the Autobots send it far from the reaches of the ruthless Megatron, leader of the Decepticons. But there are even more surprises in store when it crash-lands on Earth.
Why it matches: Recommended by TMDB viewers · both animation & action
Popcorn FlickMovies like thisKaiju No. 8: Mission Recon (2025)
In a Kaiju-filled Japan, Kafka Hibino works in monster disposal. After reuniting with his childhood friend Mina Ashiro, a rising star in the anti-Kaiju Defense Force, he decides to pursue his abandoned dream of joining the Force, when he suddenly transforms into the powerful "Kaiju No. 8." An action-packed recap of the first season of Kaiju No. 8 and a new original episode, Hoshina's Day Off.
Why it matches: Recommended by TMDB viewers · both animation & action
Absolute CinemaMovies like thisCode Geass: Akito the Exiled 3: The Brightness Falls (2015)
After discovering the face of their true enemy, someone who is related to Akito and responsible for the Geass placed upon him, W-0 attempts to return to their base at Castle Weisswolf. However, stranded in Warsaw due to a complication involving their military identification, they are forced to accept the help of local gypsies, allowing the squad to take some time to deepen their bonds. Meanwhile, Britannian advisor Julius Kingsley and his guard Suzaku Kururugi begin working together with the Knights of St. Michael in order to crush the European resistance once and for all, armed with the destructive power of a giant weapon known as the Ark Fleet.
Why it matches: Recommended by TMDB viewers · both action & animation
Popcorn FlickMovies like thisGodzilla vs. Mechagodzilla II (1993)
The U.N.G.C.C. (United Nations Godzilla Countermeasure Center) recovers the remains of Mecha-King Ghidorah and construct Mechagodzilla as a countermeasure against Godzilla. Meanwhile, a giant egg is discovered along with a new monster called Rodan. The egg is soon found to be none other than an infant Godzillasaurus.
Why it matches: Recommended by TMDB viewers · both action & adventure
Worth the HypeMovies like thisPatlabor 2: The Movie (1993)
A Japanese police unit who use giant anthropomorphic robots (called Labors) is caught up in a political struggle between the civilian authorities and the military when a terrorist act is blamed on an Air Force jet. With the aid of a government agent, the team gets close to a terrorist leader to stop things from going out of control when after the military is impelled to impose martial law.
Why it matches: Recommended by TMDB viewers · both animation & action
Worth the HypeMovies like thisCode Geass: Akito the Exiled 2: The Wyvern Divided (2013)
The war between Euro Britannia and the European Union continues. New orders are given to the W-0 Unit. To land in the middle of the enemy territory as a diversion. The pilots of the W-0 Unit consist only of the commanding officer, Leila, the only surviving Japanese from their last battle, Akito, and the three that escaped from the Eleven ghettos and lived in the underworld, Ryou, Yukiya, and Ayano. With everyone holding their respective expectations, the operation moves forward. On the other side in Euro Britannia, Shin, who made his benefactor commit suicide with the mysterious power of “Geass”, is appointed the leader of the Knights of St. Michael. As Shin steadily advances for the sake of his own ambition, he and his subordinates in the Ashura squad are given orders to deploy. The one that lives in order to fight, and the one that fights in order to live.
Why it matches: Recommended by TMDB viewers · both action & animation
Popcorn FlickMovies like thisMonsters vs Aliens (2009)
When Susan Murphy is unwittingly clobbered by a meteor full of outer space gunk on her wedding day, she mysteriously grows to 49-feet-11-inches. The military jumps into action and captures Susan, secreting her away to a covert government compound. She is renamed Ginormica and placed in confinement with a ragtag group of Monsters...
Why it matches: Recommended by TMDB viewers · both animation & adventure
Popcorn FlickMovies like thisGodzilla vs. Mechagodzilla (1974)
An Okinawan prophecy that foretells the destruction of the Earth is seeming fulfilled when Godzilla emerges to return to his destructive roots. But not all is what it seems after Godzilla breaks his ally Anguirus's jaw. Matters are further complicated when a second Godzilla emerges, revealing the doppelgänger as a mechanical weapon.
Why it matches: Recommended by TMDB viewers · both action & adventure
Popcorn FlickMovies like thisMobile Suit Gundam 00 Special Edition II: End of World (2009)
Like the Japanese Special Editions of other Gundam and Sunrise anime series, this is the second of three volumes, that will condense the first half of the second season of Gundam 00 into feature-length videos. They all feature some new animated sequences and some partially re-recorded dialogue.
Why it matches: Similar story and style · both action & adventure
Gekiganger 3 - The Movie (1998)
If you have watched Nadesico, you know what Gekiganger is. This is a great show to watch at a convention with a lot of people. I can not explain how cool it was to sing the opening theme and cry when Joe die with hundreds of other people. It not only makes fun of classic giant robot shows, but the movies as well. The first half is compilation of all the clips from Nadesico, while the second half is a new story. This show even has a cameo appearance from the Nadesico crew.
Why it matches: Similar story and style · both animation & adventure
Mobile Suit Gundam: The 08th MS Team - Miller's Report (1998)
Universal Century 0079. The One Year War rages on, and Shiro Amada and his unit, the 08th MS team, continue their struggle against Zeon forces in the jungles of Southeast Asia. But recent events have put them under close scrutiny by Federation leaders. Alice Miller, an officer of the Federation Intelligence Division, has been dispatched to ascertain the truth behind a series of events leading to the capture of a new enemy mobile armor. As she begins her investigation, the lines between Federation and Zeon become blurred. Is there really a spy among the 08th MS team?
Why it matches: Similar story and style · both animation & action
Babel II (1992)
In this animated science-fiction saga from Japan, psychic powers turn an ordinary student into the superwarrior Babel II, who must fight for the world's safety against a pack of angry zombies
Why it matches: Similar story and style · both action & animation
Castle Combiner Oshirobots (2022)
The project reimagines the historical castles in Japan as giant robots that transform and combine. In particular, the above short features the Kumamoto, Takamatsu, and Aizu-Wakamatsu Castles. A group of children and the Shirodama (the castles' souls, who are actually historical army commanders) join forces to pilot the castles.
Why it matches: Similar story and style · both animation & action
Ultraman Mebius Side Story: Armored Darkness - STAGE I: The Legacy of Destruction (2008)
The first of a 2-part sequel to the 2006 TV Series Ultraman Mebius. After the death of Alien Empera, the sentient being known as Armored Darkness is activated to carry out the Emperor's Plan B. To make its presence known, Armored Darkness revives the monsters Saramandora, Roberuga, Mukadender, and Cherubim.
Why it matches: Similar story and style · both action & adventure
Gamera vs. Guiron (1969)
Two young boys sneak aboard a spaceship and find themselves whisked away to the mysterious planet Terra. There, they encounter Gamera's old foe Gyaos and two female aliens with a taste for human brains. Gamera must save the children and battle the new monster Guiron, whose entire body is a deadly living weapon.
Why it matches: Similar story and style · both adventure & action
SnoozefestMovies like thisUltraman Mebius Side Story: Armored Darkness - STAGE II: The Immortal Wicked Armor (2008)
While the Subordinate weeped, Mirai informed him that Ryu was alive, saved by the power of Ultraman King. He revealed that after Alien Emperor's defeat, Armored Darkness had been known for some time and Ultraman Hikari was sent by Ultraman King to destroy it before it could reach Earth, but the Armor's strength overpowered him and possessed him.
Why it matches: Similar story and style · both action & adventure
Ultraman Mebius Side Story: Ghost Rebirth - STAGE I: The Graveyard of Darkness (2009)
In the Land of Light, the Ultra Brothers receive the interrupted Ultra Sign sent by Hikari, which comes from the Monster Graveyard. Obtaining Zoffy's approval, Ace and Taro depart to investigate the matter while Mebius, on his routine patrol, is quickly notified by Zoffy to join the investigation.
Why it matches: Similar story and style · both action & adventure
Ultraman Mebius Side Story: Ghost Rebirth - STAGE II: The Emperor's Resurrection (2009)
Continuing where the previous story left, Mechazam proceeds to attack EX Zetton in a mad fury but almost perishes in the molten lava until Mebius saves him, despite being heavily injured by EX Zetton. Being thrown to the Battle Nizer, Mechazam tries to break the seal under Mebius' guidance to reverse the disruption field but the container was too strong...
Why it matches: Similar story and style · both action & adventure
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Frequently asked questions
What are the best movies like Grendizer, Getter Robo G, Great Mazinger: Decisive Battle! The Great Sea Monster?
The closest matches to Grendizer, Getter Robo G, Great Mazinger: Decisive Battle! The Great Sea Monster are Mazinger Z vs The Great Dark General (1974), Godzilla: The Planet Eater (2018) and Gurren Lagann The Movie: Childhood's End (2008). Below are 27 more, each with the reason it matches.
What should I watch after Grendizer, Getter Robo G, Great Mazinger: Decisive Battle! The Great Sea Monster?
Start with Mazinger Z vs The Great Dark General (1974), the closest match to Grendizer, Getter Robo G, Great Mazinger: Decisive Battle! The Great Sea Monster.
What is the highest-rated movie like Grendizer, Getter Robo G, Great Mazinger: Decisive Battle! The Great Sea Monster?
Godzilla vs. Kong (2021), rated 7.5/10 by 10,934 TMDB users.
What is the newest movie like Grendizer, Getter Robo G, Great Mazinger: Decisive Battle! The Great Sea Monster?
Kaiju No. 8: Mission Recon (2025) is the most recent release on this list.
Are there Japanese movies like Grendizer, Getter Robo G, Great Mazinger: Decisive Battle! The Great Sea Monster?
Yes: Mazinger Z vs The Great Dark General (1974), Godzilla: The Planet Eater (2018) and Gurren Lagann The Movie: Childhood's End (2008).
How are movies similar to Grendizer, Getter Robo G, Great Mazinger: Decisive Battle! The Great Sea Monster chosen?
First come films that Trakt’s viewers watch alongside Grendizer, Getter Robo G, Great Mazinger: Decisive Battle! The Great Sea Monster, then TMDB’s recommendations and films it rates as similar in story and genre. Each pick says which signal put it there.