Haruo Kume : Belial? I thought he was dead!
Belial: My body will soon obtain supreme power. To celebrate, I will soon blow away your planet, demonstrating my might to those fools in the Land of Light!
Entries are chronological by first appearance.
- Ultraseven's "Nightmare on Planet 4": Robot Chief ("Fourth Planet Android") is the sociopathic racist robotic leader of the fourth planet. Long ago he was once part of the robots who were made to do the work on the planet, but when they noticed the inhabitants became lazy, he and the other robots took over the planet and enslaved them, treating them like an object to be disposed of. This happened so much that they needed to get people from another planet as slaves. Choosing Earth, Robot Chief uses remote control to hijack the spacecraft of Dan and Soga and bring them to his world. As he talks to Dan and Soga, he brutally beats his human secretary for making his coffee wrong. As he gives a tour, he shows the filming of the gangster movie where they use real ammunition against the human crew, killing them to make a scene in a movie, and brutally executing those who oppose him. When Dan and Soga escape, Robot Chief takes the assistant and another man who helped them escape to prepare them to be executed and readies his invasion force to attack Earth to collect more slaves.
- Return of Ultraman: Alien Nackle ("Assassin Alien") is a sadistic and brutal alien invader. Learning of Jack's human host, Nackle would gleefully have his best friend Ken Sakata run down by a car while Aki, his sister and Goh's girlfriend, is Forced to Watch. Aki herself is then murdered by being dragged behind the same car, all in an attempt to emotionally break Goh. Releasing his monster Black King, Nackle would have the monster restrain Jack while the alien spends several minutes brutally beating the hero unconscious, before parading his battered body around Japan, then back to his home planet to be executed. Nackle then has MAT brainwashed and forced to capture one another, before trying to have them execute Goh when he escapes back to Earth. When finally mortally wounded, Nackle dies laughing in Jack's face that his final weapon will take all of Japan with him. Despite his defeat, his near victory would loom over Earth for the rest of the series by inspiring many other aliens to try their hand.
- Ultraman Leo: Commander Black is a psychopathic alien invader from the Black Star. Arriving on Earth, Black makes his presence known by having Silver Bloome eat MAT and an entire shopping mall full of people alive in a rampage, killing hundreds. During his invasion, Black would make a habit of directing his monsters to directly attack and kill people in horrific and sadistic ways, as well as targeting children who had befriended Leo in order to get at him. He would also mass brainwash the citizens to attack Leo. After managing to capture Leo with the assistance of Alien Bunyo, Black would have the hero beaten, frozen, and then personally hack him into pieces with a saw while he was still conscious. During the fight with his final monster Black End, Black would take Leo's young friend Toru hostage at sword point to force the hero to allow himself to be brutally beaten by the monster. In one last act of spite, as he's beaten to death by the very children he used to try and get at his nemesis, Black summons the Black Star to crash into Earth. An utterly depraved alien conqueror, Black remains one of the most vile characters in the history of the franchise.
- Ultraman 80's "Shine into Eternity!! Space G-Men 85": Gamos ("Cruel Monster") is a Civilization Destroyer responsible for wiping out all life on multiple planets, rendering entire alien civilizations completely extinct and turning every world it has invaded into a Ghost Planet. Twenty years prior, Gamos invaded the home planet of the alien warrior Zuckal, destroying the entire city Zuckal resides in. When Zuckal tried defending his family, Gamos easily defeated Zuckal, and to "punish" Zuckal for showing resistance, the horrible creature then killed Zuckal's wife and son using its acid breath while deliberately sparing the now-defenseless Zuckal, resulting in Zuckal spending the next two decades trying to hunt down Gamos. Early in the episode, Gamos invades Earth, its next target, and rampages across Tokyo, using acid breath on several innocent civilians in a park and clearly enjoying every moment of its rampage.
- Gatanozoa ("Evil God") is the ancient and vile Master of Darkness. Gatanozoa sought to plunge the world into darkness, despair, and desolation. Using its herald Gijera to pave the way, Gatanozoa and his Zoiger army would wipe ancient humanity and their civilization from the face of the Earth before ending their age of darkness by returning to slumber in R'lyeh until life repopulated. In the modern day, Gatanozoa would stir from his hibernation, once more attempting to have Gijera addict humanity to its flowers until they began to destroy themselves and become easy prey. While Gijera would fail, Gatanozoa would unleash his Zoiger to ravage the world, reducing its major cities to blazing ruin and decimating GUTS while the monster would slaughter the Japanese branch's crew with his darkness. Confronted by Tiga, Gatanozoa would draw the battle out, strangling and pummeling the hero until finally turning him to stone, casting him into the depths of the sea with Daigo still conscious and aware inside. Even in death, Gatanozoa's hatred and rage would later allow the Dark Giant Kamila to transform into Demonzoa and attempt to destroy his killer.
- "On Halloween Night": Giranbo ("Different Dimension People") is an evil extradimensional witch who believes dreams are wasted on the young. Arriving in our dimension every Halloween for as far back as GUTS's records can remember, she hands out tainted candy to a town's children which allow her to brainwash and abduct them. Once ferried off to her dimension, Giranbo devours their dreams until they're an empty shells, and then callously throws what remains away in her Dream Graveyard. When Daigo discovers her, she traps him and forces him to watch her devour a young boy's dreams. Finding the dreams of adults unappetizing, Giranbo instead opts to leave the hero to a slow death by suffocation while she welcomes her latest feast to her dimension. When Tiga foils her plans, Giranbo attempts to kill the hero, gleefully laughing as she and her clones gang up and beat him down. While a mere Monster of the Week, Giranbo condemned countless children to a horrible fate over her very long life who even her demise doesn't bring back.
- The Radical Destruction Bringer is an entity from deep space bent on the annihilation of the human race. Claiming to be saving the Earth and universe by destroying humanity to trick Hiroya Fujimiya into helping it, in actuality its only motive for seeking humanity's destruction is a God complex and hatred of beings it sees as "insects on a trash heap". In the course of its rampage, among other atrocities, it would exploit innocent kaiju from both Earth and space and send them to their deaths without remorse; brainwash entire cities into rabid zombies; attempt to send an entire region of Japan into the Earth's mantle; and try to cause the tectonic plates to rip themselves apart under humanity's feet. In the end, it would send its Dobishi army to destroy humanity via blotting out the sun and letting them freeze to death in the cold, alongside its enforcer, the Root of Destruction, Zogu. When Earth's monsters rise against it, the Destruction Bringer shows them no mercy and has its Dobishi brutally kill many of them without remorse. Despite its claims of benevolence, the Destruction Bringer is nothing more than a self-righteous hypocrite motivated by hate.
- Zogu ("Fundamental Destruction Angel") is one of two Roots of Destruction, the Destruction Bringer's strongest enforcers. Sent to Earth alongside the Dobishi to destroy all life on Earth, Zogu has the Dobishi block all communications except for the news media so humanity can watch the increasingly hopeless situation unfold and fall into despair. When Gaia and Agul arrive to stop them, Zogu descends while feigning benevolence and atomizing three of her own Kaizer Dobishi. She then reveals her true colors by brutally pummeling the two into submission with sadistic glee before draining their power and revealing to the world their true identities as mere humans. Zogu then falls back to allow her Dobishi to blot out the sun and watch humanity slowly die in cold and despair. When Earth's monsters rise up against her, she has the Dobishi attempt to brutally kill them. When Gaia and Agul manage to return and harm her, Zogu reveals her demonic true form and attempts to crush the two to death. While an enforcer of the Destruction Bringer's will, the joy in which Zogu does so makes her just as bad as her master.
- Once Again Gaia: Gakuzom ("Root of Destruction Sea God") is Zogu's brutish fellow Root of Destruction. Surviving Zogu's defeat and his master's retreat, Gakuzom would begin his own onslaught on Earth several years later. Attacking the peaceful and defenseless Rinar 8,000 feet below, Gakuzom would viciously assault the GUARD sub sent to answer their SOS. Finally making his move and plunging the Pacific into a perpetual storm, Gakuzom attempts to wipe out all life on Earth with his Baiakuhe, with the Root of Destruction attacking Tokyo personally. When Agul arrives to stop him, Gakuzom has his minions maul and restrain the hero while he beats him down himself. When Gaia arrives, Gakuzom devours his entire army and begins brutally pounding the two heroes.
- Mensch Heit ("Ultimate Evolution Emperor") is the Evil Overlord of Planet Zamu. Believing himself the Ultimate Lifeform chosen by the universe to embody its will, he would deem the Alien Zamu unworthy of life. Merging numerous other Dark Matter mutants into the barbaric Grall to exterminate them, he drove the survivors into exile on Earth. Finally tracking them down, he sends Grall to finish the job, who kills all but Esura. Not satisfied, Mensch Heit threatens humanity to share their fate if they don't hand him over. After Grall is killed, Mensch Heit attempts to finish the job personally, leveling a large part of the area trying to kill the Ultras. With them at his mercy, he attempts to burn Neos and Ultraseven 21 to death, forcing Esura to sacrifice himself and complete Mensch Heit's genocide. Despite his attempts to paint his victims as the barbarians, Mensch Heit proves himself a hypocrite at every turn.
- The Blue Planet: Sandros ("Variant Lifeform") is a ruthless space monster and leader of the Scorpis. Desiring to reduce the universe to a desert wasteland to better suit his liking, Sandros would begin a genocidal rampage across the stars, destroying multiple planets including Juran and Gyas. When the few surviving Alien Gyas manage to escape, he sends his legions after the defenseless fleeing ships to complete his genocide. Trailing the sole surviving ship to Earth, Sandros launches a full scale invasion with the intent of destroying the planet as he had others. When a last ditch shield prevents his army from making land fall, he forces his army to turn themselves into suicide bombers to breach it. When his forces are beaten into retreat, Sandros finishes the survivors off himself for their failure. Immobilizing Cosmos, Sandros would mock the hero before attacking him while he's defenseless, then laugh sadistically as he brutally attacks the hero and Justice with his arm blades. Even in death, Sandros's evil is such that it would convince Justice to attempt to aid in humanity's destruction when the mere thought of them turning out as vile as the space monster becomes possible. Among the often sympathetic and redeemable enemies Cosmos faces, Sandros stands out as an unrepentant mass murderer.
"Ultra N Project"
- Ultraman: The Next: Beast the One, also called simply The One, is a parasite from space. Fleeing from its enemy, Ultraman The Next, it escapes into Earth's oceans and attacks a submarine, killing everyone on board and taking Udo Takafumi as a host. Udo is slowly and painfully eaten alive, physically and mentally, with The One absorbing his memories to pose as Udo. After absorbing enough organic matter to escape, The One murders his way out of prison and flees into the wilderness. When led into a trap by Udo's fiancee Sara, it poses as Udo to try and prey on her feelings before attempting to kill her when the deception falls through. After escaping again, it flees into the sewers, eating and killing every human it comes across. This is when we find out that, rather than following Blue-and-Orange Morality, it talks, thinks along very human lines, and deeply enjoys killing people. It does not prey on humans for sustenance, as simpler creatures like lizards, rats and crows enhance its powers; it preys upon them for pleasure. At one point, after taking on its true gigantic form, it laughs while destroying the city, gloating and bellowing for the humans to run in terror. What made The One stand out over most of the other kaiju before or since was its utter sadism. It's a Psycho for Hire that deeply enjoyed killing and eating humans, in some ways worse than its creator. It is not a wild animal, or a tragic beast—just a monster.
- Ultraman Nexus: Dark Zagi ("Evil God of Destruction"), alias Unknown Hand, is an evil, heartless, genocidal tyrant from another world. Created to be a force for justice, a clone of Ultraman Noa, instead he chose to kill off his creators, slaughtering so many of their people that they abandoned their planet and destroyed it to be rid of him. Zagi survived, and simply created an army of Space Beasts, including Beast the One, to take over the universe. He sent that monster to Earth, making him indirectly responsible for everything that went wrong in Ultraman: The Next. In the series proper, Zagi was beaten before the events of the series and destroyed, leaving behind his energy core and his soul. To restore his power, he possesses a random man, killing him slowly and taking over his body. Crafting the alias of Mitsuhiko Ishibori, Zagi starts a long gambit to regain his powers, sending Space Beasts across Japan and creating two more Dark Giants to attack Nexus and kill as many people as they can. At one point, Zagi actually kills a little girl's parents right in front of her and laughs about it. Eventually, Zagi succeeds in his gambit, and reveals himself by casually shooting his loyal partner in TLT. Nagi Saijyo, the girl Zagi personally orphaned, chases him and confronts him with the power of Ultraman Nexus. Zagi, who's revealed himself as Ishibori, simply mocks her, captures her, and tortures Nexus's power out of her body before absorbing it into himself and regaining his true form. Ascending to Tokyo, he orders all of his Space Beasts to attack the entire planet while he personally rampages through the city. Zagi was a remorseless, twisted killing machine, and responsible for much of the suffering that occurred in this series.
- "Invasion of Evil": Ruganogar ("Evil Beast") is the sadistic, three-headed Destroyer of the Stars. Traveling the universe, Ruganogar seeks out planets thriving with life and hunts down the populace before reducing the planets to space debris. Attacking Lyrica's home planet S-851, Ruganogar actively targets the fleeing civilians, resulting in her parents' deaths right in front of her and leaving her the sole survivor of her doomed planet. Attempting to destroy Earth to further sate his blood lust, Ruganogar actively targets Kaito with intent to kill and deflects a missile DASH fires at him directly at a group of fleeing school children. While most monsters and aliens in Max were either brought on humanity by themselves, sympathetic, or even silly, Ruganogar stands out as a sadistic murderer who slaughters entire worlds for his own amusement.
- Alien Empera, aka the Lord of Darkness and The Emperor, is the Greater-Scope Villain of the entire Showa continuity. Empera is first mentioned as being the reason two planets went into a Forever War, and later is shown on screen as the driving force of evil in the Showa era Ultra shows. In the stage shows, he attempted to wipe out everyone in his timeline through a time travel plot, one that later inspired Ultraman Belial to try his own evil plans. In Ultraman Mebius proper, finally appearing physically in the final episodes, Empera is the reason that the monsters and aliens have been invading for the past year. He called Bogal to Earth, and after her death he continued guiding more monsters to Earth to continue softening up the defense forces for his own arrival. His own loyal generals are thrown aside and discarded like trash after they expend their own usefulness. In the final battle, Empera kills two of the heroes, Zamushar and Ultraman Hikaris original host, and almost kills Mebius and Hikari for good. His final plan was to blot out the sun, wiping out all of humanity, just to spite his old enemy Ultra Father. Hateful, cruel and arrogant, Empera proves that sometimes Aliens Are Bastards.
- Bogal/Bogar ("High-Dimensional Predator (King)") was a sadistic eating machine from another planet and the series's first Arc Villain. Before the events of the series, she killed and devoured everyone on planet A(a)rb, while also beating Ultraman Hikari to a pulp, leading him to become the vengeful Hunter Knight Tsurugi. After coming to Earth, she calls various other kaiju to the planet to kill and eat them as well. The collateral damage involved means nothing to her, nor do the screams of the kaiju she eats alive. When Ultraman Mebius tries to stop her, she simply beats him aside and nearly eats him alive as well, multiple times, at one point dragging it out just to be cruel. Tsurugi tries to confront her more than once, only to be beaten back and nearly killed as well. Eventually we find out that, by storing up power through the monsters she's eating, she's transformed into the more-powerful Bogalmons/Bogarmons. Should she be killed, she would set off an explosion large enough to wreck Tokyo and everything else for miles around. Uncaring of this, she set off to murder Mebius one more time within GUYS HQ.
- Ultraman Belial is the Overarching Villain:
- Mega Monster Battle: Ultra Galaxy Legends: Ultraman Belial ("Super Galaxy Great Emperor") is a Fallen Hero-turned-tyrant and a Satanic Archetype. Ultraman Belial started off as a typical Ultraman warrior , but, due to greed, desired to steal the Plasma Spark powering their entire civilization; this would cause the planet to immediately freeze over, trapping all the Ultras in ice for an eternity. Belial was found out, and sent into exile before coming back, having merged with the ancient Alien Rayblood. He went on a wild rampage before being sealed away by Ultraman King. Unfortunately, thousands of years later an Alien Zarab sets Belial free in an attempt to form an alliance with him. In return, Belial kills the Zarab and then heads to the Land of Light, successfully stealing the Plasma Spark and freezing everyone on the planet in an And I Must Scream state. Belial then plans to take his army of 100 kaiju and use them to conquer the galaxy. When confronted by the few survivors of his earlier campaign, Belial sics his monsters on them, at one point mind-controlling Rei and Gomora and turning them against Ultraseven. Belial then finishes the job, seemingly killing Seven. When cornered, Belial forcibly merges with all of his monsters into a Body Horror super monster named Beryudora, literally made from their bodies, causing all of them intense agony.
- Ultraman Zero: The Revenge of Belial: Belial comes back as Kaiser Belial ("Dark Great Emperor"), as bad as ever. After Zero beat Belial, Belial traveled to another dimension, creating Darklops robotic clones of his archenemy Zero and sending them out to cause havoc. One such clone, Darklops Zero, is the Big Bad of the tie-in movie Ultra Galaxy: Ultraman Zero vs Darklops Zero, making Belial responsible for everything that goes wrong there. Said clone was a sadistic killing machine, much like his creator. In the movie proper, we find out why Belial was making an army of robots—hes been going from planet to planet in this new dimension, harvesting "emerald" power sources to power his army and himself. Renaming himself "Kaiser Belial" or simply "Emperor", Belial sends his forces to massacre all opposition. Zero tracks Belial to this dimension, even taking a human host to survive, but Belial captures him and gloats to Zero about his plans. Once finished in this alternate dimension, Belial was going to murder all Zeros friends and then have his Empire destroy everyone in Nebula M78, Zeros home world, while Zero is forced to watch. Zero escapes and the two have a rematch, with Belial eventually turning into a monster called Arch Belial. Now unstoppable, Belial takes great pleasure in torturing Zero, beating on him and sucking the life out of Zeros body while gloating about his newfound power.
- Ultra Zero Fight: Ultraman Belial comes back as a ghost in this series, with much more personal plans in mind for Zero. This time, Belial decides to take his revenge on Zero by possessing Zero's body, locking Zero away inside, and forcing Zero to watch as Belial murders all of Zero's friends. Belial takes sadistic pleasure in beating all of Ultimate Force Zero to death while Zero is helpless. Afterwards, Belial plans to use Zero's power and his own to conquer the universe.
- Ultraman Geed: Ultraman Belial has somehow gotten worse. The first thing he does in this series, during his fourth attack on the Land of Light, is defeat all the Ultramen before setting off a bomb that would wipe out all life in their universe. However this was a Xanatos Gambit: either Belial kills them all and gets his revenge, or he gets Ultraman King out of the picture. The latter happens, and Belial then hides out in space, plotting his next move. Belial plans on making himself invincible by eating Geed alive and leeching power from him like a battery. When that fails due to Geed's strong willpower, he chooses to mind control his son into becoming a loyal slave. Geed escapes and Belial loses their fight, only to come back by possessing an innocent woman and using her as a puppet while manipulating his own loyal servant Fukuide Kei into fighting for him. Upon finding that Kei is of no further use to him, Belial rips out Kei's Sturm Organhis power source and vital organand eats it in front of him, cackling about how Kei will be dead in days without it. During the final battle, Geed attempts to reason with his father, all but begging him to let go of his evil. Belial responds by trying to kill him one last time, demonstrating he is beyond all help.
- Ultraman Saga: Alien Bat ("Antenna Alien") is a genocidal tyrant from another world. Coming to an alternate Earth, he brings with him a giant insectoid monster named Hyper Zetton, and feeds nearly all of humanity, roughly 6 billion except a few dozen survivors in Japan, to Hyper Zetton just to give it a power upgrade. He then spends the rest of the movie torturing said survivors, sending Kaiju to torment them, while gloating about how powerful his creatures are. When Ultraman Dyna comes to free the people from Hyper Zetton, Alien Bat has Dyna turned to stone after having Zetton beat Dyna almost to death. Eventually, two more Ultramen, Cosmos and Zero, come to save this alternate Earth, and start by freeing two of Bat's kaiju from his control. The instant both monsters agree to leave peacefully, Bat immediately murders both monsters in front of Cosmos. When his plans come to fruition, Bat merges with Hyper Zetton and gleefully beats all three Ultramen almost to death, gloating about how his now power makes him a god.
Shin Ultraman Retsuden
- Ultraman Ginga & Ginga S:
- Dark Lugiel ("Darkness Demon") is Ginga's Evil Counterpart and dark side. They split because Ginga wanted life to change and evolve naturally, while Lugiel wanted life to remain in stasis, which meant killing and petrifying everyone in existence. To do so, Lugiel started a tremendous war between the heroes and villains of the Ultra Series, with himself leading the charge on the villainous side—only to turn on them and use his Dark Spark to turn everyone on both sides into Spark Dolls. Ultraman Taro was still able to speak, but everyone else was trapped as an immobile tiny statue until Lugiel decided to use their powers for something. Thanks to Ginga, Lugiel lost his own body, so he takes over a woman in Japan and uses his trapped minions to torment the students all over an elementary school. Lugiel had no restraints about throwing them aside when necessaryhe kills Alien Icarus, reverting his body to a Spark Doll after Icarus fails and surrenders to the heroes. After Lugiel finally gains enough power to strike directly, he mind rapes dozens of people, inflicting them with such despair that they pass out, while Lugiel feeds on this to restore his own powers. When Ginga attempts to stop him, Lugiel goes for a sucker punch and then tortures a half-powered Ginga until he too loses consciousness. Lugiel is beaten, but comes back in the sequel as Dark Lugiel, returning after his body was restored by Alien Chibu Exceller, and used as a weapon against Ginga and Victory. Lugiel then takes his body back, kills Exceller via a shot to the back, and takes over his new enhanced Vict Lugiel form and preparing to use his powers to turn all of humanity into Spark Dolls. He gleefully gloats that he'd create the ultimate paradise...but it'd only be perfect for himself.
- Alien Chibu Exceller ("Brain Alien") is a depraved little alien and the source of the conflict in Ginga S. He leads an invasion force to Earth, wrecking an entire city, to get his tentacles on the Victorium Element and resurrect his "Grand Master", Dark Lugiel. To this end, he razes a city with an army of giant robots and monsters. However, Exceller has loyalty to no one but himself, coldly throwing his own subordinates aside when they are no longer of use. He commands his own sapient loyal right-hand woman, Android Zero-One, to self-destruct inside the enemy base because it'd be too inconvenient to teleport her back. He allows Vorst, his other loyal servant, to be killed by the Japanese military, after taking over Vorst's mind and using him like a puppet to attack the main protagonists. As Five King, Exceller took great pleasure in beating and torturing Ultraman Ginga and Victory, pummeling them so badly that they turned to stone and the two giants nearly died for good. After having the benevolent kaiju Shepardon murdered, Exceller gains enough Victorium to resurrect Dark Lugiel as Vict Lugiel. However he did not revive his master's mind; Exceller betrays him as well, using his mechanized body as a puppet before Lugiel comes back on his own. Exceller shows no remorse for any of this, gloating that his many betrayed servants were simply pawns to be used and discarded as he saw fit.
- Ultraman Ginga S The Movie: Showdown! The 10 Ultra Warriors!: Etelgar ("Super Space-time Demon") intends to conquer entire universes, firstly by abducting the Ultramen protectors of each universe and having them trapped in suspended animation, still aware of their surroundings but completely immobile. Invading the peaceful Planet Zandt causing untold amounts of destruction, Etelgar had the princess of Zandt, Arina, captured and put through brainwashing turning her into his lackey; implanting False Memories in her mind to trick her into believing that her home planet was destroyed by the Ultras; and subjecting her to regular Mind Rape to enforce her loyalty. Intending to invade the universe of Ultraman Ginga and Victory, Etelgar nearly managed to have Ginga and Victory sealed alive in his collection, and later recreates a mountain-sized copy of the previous villain Dark Lugiel to destroy the city for his own sadistic pleasure.
- Ultraman X:
- Gargorgon ("Petrification Demon Beast") is a greedy planet-killing Kaiju from across the stars. Initially, she appears to be your typical Monster of the Week, but we find out she can speak, she can think, and she is a remorseless beast. She petrified an ancient civilization on Earth, everyone on Planet Gold, forcing the last survivor,Te Ru, to escape in a giant machine named Rudian. While the actual event isn't seen, there is close up one of her victims on the ground, face frozen in agony. Upon arriving to Earth, she rampages about Tokyo, fighting and eventually petrifying Ultraman X. Her plan is to get her hands on the energy core within Rudian, kill Te Ru, petrify the entire Earth and move on to another world. Even worse, we find out her victims are still at least partially alive in an And I Must Scream state—Ultraman X clearly remembers being turned to stone which means the other victims did as well. She displays no remorse for her genocidal actions, only greed for more power.
- The Movie: Here Comes! Our Ultraman: Zaigorg ("Devil Beast/Enma Beast/Ruler of Hell Beast"; literally "Sin Suffering") is an ancient demon and the Satan equal of the X Universe. Emerging from Hell in ancient times, Zaigorg would bring about Hell on Earth until finally defeated and sealed away. Upon his release in modern times, Zaigorg instantly attacks the nearest group of humans in sight, including the child Yuuto, and slowly approaches a helpless woman to crush her to death. When X tries to stop him, Zaigorg beats him down and obliterates the entire area with the finishing blow while sealing Daichi's ability to become X so he can watch the rest of his rampage helpless to stop him. Arriving in the city, Zaigorg would rampage alongside clones of Antlar and Fire Golza, ending with trying to slowly collapse a building underneath the feet of the civilians trapped inside. Getting the drop on Ultraman and Tiga, Zaigorg would attempt to suck the life out of them and use their stolen energy unleash clones of Tsurugi Demaaga on five major cities around the globe with the intent to once more turn them into Hell. Zaigorg is the devil himself, and his only motivation for any of his crimes is his own sadistic pleasure.
- The Ultraman: Heller is the narcissistic, sociopathic and tyrannical leader of the Heller Empire, who seeks to conquer the universe out of ambition. Before the start of the series, he tried using the power of the Ultra Mind for his goals, leading to his banishment from U40 along with those who followed him. Following his banishment, Heller would begin to conquer and destroy alien planets who had no relation to his banishment for the sake of strengthening his forces. Later, Heller returns and raids U40, stealing the Ultra Mind and capturing the planet's leader, Great Wise Man, so as to forcefully obtain from him the secrets of the artifact's power. Heller follows by sending his troops to attack Earth under General Roygar, killing thousands of innocent humans out of paranoia that they will help the remnants of U40 and Ultraman Joneus defeat him. In the penultimate episode, Heller has Joneus's sister, Amia, captured after she tries rescuing Wise Man, to force Joneus to reveal his human host's identity. In the final episode, Heller lets Joneus kill many of his men to draw him into his base where he attempts to have the Kaiju Makdatar kill him. When his forces begin to lose the battle against the heroes, he attempts to abandon them all to save himself before Joneus rescues Amia and leaves him for dead in his exploding base.
- The・Ultraman: Jackal vs. Ultraman (Link): Demon King Jackal is a demonic space overlord imprisoned by Ultraman King long ago for his crimes. Escaping from Hell's Black Hole, he begins a brutal campaign of revenge against the Ultras, starting by murdering Ultraman in the guise of Zetton and hurling his corpse into the sun. He would then hunt the Ultra Brothers down one by one, brutally murdering them, including killing Astra in the guise of Zoffy in front of his brother Leo. In an attempt to hunt down the surviving brothers in hiding, he would conquer and enslave Earth, having his minions round up innocent civilians and kill them to try and lure his enemies out. When Andro Melos gains the upper hand in their duel, Jackal feigns surrender and begs for his life, only to attempt to kill Melos when he spares his life. Confronted by Zoffy in the guise of Melos, he would fire his Jackal Destruction Ray directly into a crowd of his own troops in an attempt to kill his foe. Despite having minimal screentime, Jackal spends every moment allotted being as vile and monstrous as possible.
- Netflix anime
- Alien Adacic is an alien Serial Killer Shinjiro is sent to terminate. Adacic is introduced in a room full of corpses he's drained of blood while gleefully finishing off the latest of many such massacres he's committed. Leading the fight into the city, Adacic intentionally stops the chase and fights Shinjiro in the middle of a crowded street. When the teenager Rena tries to encourage Shinjiro, Adacic tries to murder her out of boredom and soon begins blowing up the area and endangering countless civilians in the process. When his arm is sliced off, Adacic goes berserk and decides he'll eat every civilian in the area out of spite. Despite being the first Monster of the Week, Adacic proves one of the worst and most sadistic in the entire series.
- Ace Killer is the leader of Ace Killer Squad. A sociopathic mercenary, he's the true perpetrator of the airline explosion that kick-started the series, killing most of those on board, children included, an act which for him was simply an average day on the job. When Moroboshi and Shinjiro track him down, Ace Killer's trap kills Moroboshi's entire squad, something which the mercenary couldn't care less about. Despite not being part of his current job, Ace Killer decides to kill the two anyway for his own amusement, and tortures both Shinjiro and Seiji, assuring the latter his childhood friend Yuko is next on his list. After being temporarily killed by Seiji, Ace Killer decides to brutalize the already mortally wounded boy and mount his skull in his trophy room. Even in death, Ace Killer tries to destroy the entire area with a massive bomb in one final act of spite. Despite being a hired soldier, Ace Killer enjoys every second of it and cares for nothing else, not even his own squad.
- Fighting Evolution Rebirth: Alien Mephilas ("Malicious Alien") is an evil alien invader and the true mastermind of the story. Forcing the redeemed Chaos Header back into its corrupted form, he makes it corrupt monsters and unleashes multiple monster attacks to gather data. He then unleashes the Chaosroids on the Land of Light, nearly sending its orbit spiraling out of control by having S steal the Ultra Key, nearly lets it freeze in the cold by having U destroy the Plasma Spark, and has T steal the Ultra Bell and destroy a portion of the city. Possessing Chaos Darkness, Mephilas brutalizes Ultraman Agul, Gaia, and Tiga before forcing the entity to try and kill its now ally Cosmos. When Cosmos tries to free Chaos Header, Mephilas fully merges with it and dissolves a portion of the city. Upon defeat, Mephilas sees the whole situation as little more than a sick game.