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12[[quoteright:350: [[Series/KamenRiderAmazons https://static.tvtropes.org/pmwiki/pub/images/sojishitashimobeating1.jpg]]]]
13[[caption-width-right:350:"[[Recap/KamenRiderAmazonsEp8HeroOrNot For some time now...Beating a living thing until it's bloody, broken, unable to move...has made me feel so alive. It's an incredible feeling. Let's see how this feels!]]"]]
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15-> ''"He is a monster, far worse than the Roidmudes you despise. The marathon of torture that man inflicted upon me...It has been burned into my memory...''"
16-->-- '''Heart''', on '''Professor Tenjuro Banno''', to Banno's son Go(u) Shijima, ''Series/KamenRiderDrive'', "[[Recap/KamenRiderDriveEp40WhyAreTheTwoScientistsInAConflict Why Are the Two Scientists in a Conflict?]]"
17''Franchise/KamenRider'' has been [[LongRunners around since 1971]], with its main theme being about how someone can rise above tragedy to become a hero and while many villains have redeeming qualities, these are [[CompleteMonster the very worst]] that have none. While some are genuine monsters, all too often they're [[HumansAreTheRealMonsters all too human]].
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19![[Administrivia/SpoilersOff All spoilers are unmarked]]. Administrivia/YouHaveBeenWarned!
20----
21[[foldercontrol]]
22
23!!Franchise-Wide
24
25[[folder:Examples]]
26* [[DarkMessiah The Great Leader of Shocker]] serves as the BigBad of the Showa Era and an archetype to many of his successors of the Henshin genre. Desiring to rule the world, he kidnaps countless innocents to experiment on and brainwashes them into becoming his soldiers, even torturing them with electricity to test them. When his organization Shocker would start to falter by the efforts of the heroes, he founded Gel-Shocker, slaughtering all of his soldiers in retribution for their failures. He then resurfaced in ''[[Series/KamenRiderV3 V3]]'', where he would create the organization Destron and attempted to launch Operation: Japan Annihilation, which would release DeadlyGas across the entire country and take the lives of millions and he even attempted to throw his own son in a pool of acid for defying him. He resurfaced again in ''[[Series/KamenRiderSkyrider Skyrider]]'', where he manipulates the Neo-Shocker group to gain more power, attempting to wipe out the world's oxygen and exterminate humanity to spite the Riders. In the movie ''Film/OOODenOAllRidersLetsGoKamenRiders'', he resurfaces as the final villain to use time travel to conquer the world, even murdering his own generals to achieve victory, believing in achieving power for himself no matter what the cost. Defined by his monstrous [[AGodAmI God Complex]] and desire to [[InTheirOwnImage remake the world in his own image]], he represents the very worst the franchise has to offer.
27* [[AxCrazy Takeshi Asakura]]/[[BloodKnight Kamen Rider Ouja]], the archetypical evil Rider of the Heisei Era, is a psychopath who is drawn to, and wishes to perpetuate, violence. Originally an escaped SerialKiller who joined the [[Series/KamenRiderRyuki Rider Fight]], Asakura [[SelfMadeOrphan murdered his own family]] at the age of [[TeensAreMonsters 13]] by starting a fire in their home, and would go on to rack up the highest body count amongst the Riders. A vicious sadist, he's responsible for breaking the hands of the intended Kamen Rider Raia, Yuichi Saito, and the murder of an innocent woman, who turns out to be Miho Kirishima's sister, thus making getting revenge her reason for becoming Kamen Rider Femme; Asakura would later use a child as monster bait, with him willing to let her be killed to fuel his thrill for carnage. To top it all off, he kills his own estranged brother by feeding the latter to his Contract Monster, Venosnaker. Revived in 2017 by Foundation X, Asakura leads the Beast Rider Squad and terrorizes the [[Series/KamenRiderExAid Cyber Rescue team]], beginning his new series of crimes by [[CopKiller murdering a police officer]] and beating Satsuki until both of her arms were broken. Confronted by [[Characters/KamenRiderExAidEmuHojo Emu Hojo]], Asakura pushes his head into a bucket of glass and uses two of his comrades as {{Human Shield}}s during his battle against Hiiro Kagami, killing them. Brought back in 2019 as one of the six returning veterans to participate in the new Rider Fight, Asakura is "thrilled for the party to start again", killing Tozuka, Ren and Goro, whom he had promised to kill for last if he kept cooking for him. Asakura's evil is so great that it lives on in the franchise, with Asakura acting as a template for numerous other villains.
28[[/folder]]
29
30!!Showa Series
31
32[[folder:Examples]]
33* ''Series/KamenRider'':
34** [[CardCarryingVillain Colonel Bakarashin Iinodevitch Zol]] is a former Schutzstaffel (SS) officer who lost his left eye when gas leaked from one of the chambers at the Auschwitz concentration camp. Proud of his war crimes and his past as a high-ranking Nazi, Zol joined Shocker's Middle East Branch after the end of {{UsefulNotes/World War II}} and quickly got a reputation for brutality. Transferred to Japan to deal with Kamen Rider 2, Zol brainwashes children into becoming ChildSoldiers for Shocker and gases an entire town. Apathetic to the fates of his own soldiers, Zol dismisses their deaths and even tests the powers of a resurrected mummy-like Kaijin by letting him murder one of his mooks. Using another infectious Kaijin, Zol has him kill a group of innocents, forcibly converting the survivor into a disease-carrier to spread more suffering. In [[Series/KamenRiderV3 the sequel series]], Zol is revived by Doktor G and assists him in spreading a DeadlyGas across the country.
35** [[FromNobodyToNightmare General Black]] is the sole commander of Gel-Shocker and the Great Leader's [[TheHeavy representative]] after the fall of Shocker. Originally a young conscript in the Imperial Russian Army, Black stood out as a cruel SociopathicSoldier who caught the attention of Nikolai II himself, rising to the top of the military hierarchy with his sadistic methods. After the Empire collapsed, Black was invited to join Geldam and traveled to the African deserts, training their soldiers there. When the Great Leader proposed to merge their organizations in an alliance, Black gladly accepted the offer and provided him with a new generation of operatives, sending his underling to hunt down the Shocker soldiers who were marked for execution; all Gel-Shocker soldiers must take a drug called Gelper every three hours, or else they [[SpontaneousHumanCombustion combust alive]]. Given the task of eliminating the Shocker scientists, Black [[HopeSpot releases them]], only to gas their bus in an experiment. Putting the lives of millions of people at risk with his plans, Black sends a Kaijin to test his abilities by unleashing his corrosive gas inside an entire apartment complex, and orders the mass kidnapping of civilians to expand Gel-Shocker's personnel by performing surgery on them whenever he feels like it, later brainwashing children to be part of a new unit of ChildSoldiers and almost making them consume Gelper. In the [[Series/KamenRiderV3 sequel series]], Black is revived by Doktor G and assists him in spreading a DeadlyGas across the country.
36* ''Series/KamenRiderV3'': [[InsaneAdmiral Marshal Armor]] is the fourth and final Destron Commander. When he assumes command of Destron, his first act is to plant evidence against their head scientist, Jōji Yuki, whom he views as a threat, and execute him via acid pit. Knowing the man values his hands for his work, Armor begins the execution by burning one off first. From there, Armor launches a number of deadly schemes, including attempting to cover Tokyo in [[DeadlyGas nerve gas]], kidnapping children for slave labor, and [[WouldHurtAChild unleashing Vampire-Chameleon on more children]] to feed off their blood. When Vampire-Chameleon kills a pair of his own men, Armor coldly remarks that [[LackOfEmpathy if they weren't so weak they wouldn't have died]]. When ordered by the Destron Leader to [[NukeEm launch a nuclear assault on Tokyo]], Armor kidnaps a scientist's family to force him to work on the weapon. When he frees the heroes, Armor has him killed, and hangs his corpse outside the Destron base as a warning to all who would defy him.
37* ''[[Series/KamenRiderAmazon Amazon]]'': [[MultipleHeadCase Ten-Faced Demon Gorgos]] is the leader of Geddon and a brutal sadist with a taste for human blood--[[LifeDrinker which gives him power]]--and giving ironic deaths to his own Beastmen. A subordinate to the Garanda Empire, Gorgos initially operated in the Amazon and burned a tribe alive in search of the [=GiGi=] Armlet before following hero Daisuke Yamamoto to Japan. Aside from targeting Daisuke's friends, Gorgos punishes those who dare to [[YouHaveFailedMe fail him]], through such means as burning; consumption by vampire bats; and exposure to the sun. After kidnapping several students from an elementary school, Gorgos has them [[WouldHurtAChild tied to the ceiling and tortured with hot gas]]. Growing bored of drinking men's blood, Gorgos sends the Beastmen to capture young women, and later children, for him to drain their blood. Capturing a human criminal, Gorgos turns him into the Ant Beastman, praising him for his violence even after he had attacked his own allies. Before his ultimate defeat, Gorgos invaded a local university and slaughtered multiple people with acid.
38* ''[[Series/KamenRiderStronger Stronger]]'': [[BadassInANiceSuit Mr. Titan]] is the first and worst executive of Black Satan. Once a suave criminal who quickly jumped into the opportunity to join Black Satan, Titan rose through their ranks until he became one of the Great Leader's CoDragons, supervising and overseeing the Kikkaijin on the field to make sure that they are successful while being [[BadBoss cruel towards his own men]]; Titan is involved in numerous destructive operations, including but not limited to: tainting the school lunches of [[WouldHurtAChild elementary school students]] with capsules of Tetrodotoxin; [[WaterSourceTampering contaminating the water supply]] of a town with a [[PsychoSerum chemical]] that [[HatePlague induces homicidal insanity]]; and using a [[BrownNote cacophonic sound]] to make adults kill children. When Titan gets his hands on the Gamma Bugs, parasites that are capable of killing their hosts, he tests their properties on a captive and makes the man [[ForTheEvulz strangle himself to death for fun]], planning on spreading the Gamma Bugs over Tokyo to help Black Satan in controlling the city, and when that fails, Titan tries to assassinate a sheik to disrupt international relations. Recruiting Black Satan's strongest Kikkaijin to assist him in a plan to export poisoned food worldwide to kill millions and allow Japan to be invaded, Titan is killed after sacrificing a Kikkaijin in an attempt to kill Shigeru Jo. Revived by the Great Leader, Titan earns the enmity of his rival General Shadow for using dirty tactics to win, with one of his first plans after his return being mass-producing a bioweapon for Black Satan, forcing an innocent prisoner to inhale it. Defeated yet again, Titan proposes a handshake before he dies to show that he respects Jo, only to reveal that it was a [[TakingYouWithMe trick to take Jo to hell with him]].
39* ''[[Series/KamenRiderBlack BLACK]]'': While Gorgom was a {{Cult}} led by literal monsters, these two [[PsychoSupporter Psycho Supporters]] prove that HumansAreTheRealMonsters:
40** [[MadScientist Professor Hideomi Kuromatsu]] is a Nobel Prize winner who moonlights as Gorgom's chief scientist. The man responsible for converting victims into mutants, Kuromatsu's MO is to propose a DealWithTheDevil to young men, promising to make their bodies stronger by performing an experiment that makes them worse, which once resulted in a suicide. After making a deal with Kohtaro's close friend, Kuromatsu turns him into a WolfMan and confesses to using him as a guinea pig. Kuromatsu orders his subordinates to cause several car accidents for him to save the injured victims and send them to a TrainingFromHell where they shoot and throw grenades at each other until they are prepared to become domestic terrorists.
41** [[CorruptPolitician Ryuzaburo Sakata]] is the Pro-Gorgom leader of the [[PuttingOnTheReich EP Party]]. With the help of a psychiatrist, Sakata kidnaps artists and brainwashes them into becoming spies for Gorgom with [[FantasticDrug RSD]] and hypnosis. Sakata teaches young musicians about the "[[BrownNote Devil's Melody]]", a song that can damage a person's senses, ordering a girl to play the song in a public location. After stealing a prototype from a benevolent man, Sakata takes advantage of his political party's boy squad to make himself look like a peacemaker and spearheads a systematic GenocideFromTheInside against the sickly and frail with a machine that supposedly cures their illnesses but slowly kills them instead.
42[[/folder]]
43
44!!Heisei Phase 1 Series
45
46[[AC:''[[Series/KamenRiderKabuto Kabuto]]'']]
47
48[[folder:Examples]]
49* [[MilitaryMaverick Masato Mishima]], the second-in-command of ZECT, is, due to his selfish behavior, their TokenEvilTeammate. In the past, Mishima captured the young boy that would become Dark Kabuto and [[PlayingWithSyringes performed horrendous experiments on him]] to unlock the power of the Hyper Zecter, keeping him as a prisoner for years inside a ZECT facility in Area X. Assigned to oversee the development of the Gatack Zecter, Mishima wastes no time in sacrificing the lives of his own soldiers to see who is worthy of its power. Mishima allies himself with the Worms to stop the independent non-ZECT Riders, framing Daisuke for the murder of a rival makeup artist and later sending an agent whom he forced to eat nothing but dry boiled rice for the last seven years of her life to pose as a cadet to get closer to Tendou in a plot to assassinate him. Taking part in the AM Bomb operation, Mishima is disappointed in his superior for attempting to save the civilians that were made hostage by the Worms in Area C3, informing Arata that if he fails the negotiation, he'll just nuke the entire district. After the existence of Worms is announced to the world, Mishima turns himself into a Native and conspires to do the same with the rest of the world by usurping the position of general and, just so he doesn't get to lose his status after all the Worms have been exterminated, manipulating the population into wearing a pendant that detects Worms, but, unbeknownst to them, also converts those wearing it into Natives.
50* [[DarkIsEvil Reiji Nogi]]/[[ResurrectiveImmortality Cassis Worm]] is a field leader of the Worms' army who, despite being introduced in the last episodes, proved himself to be the worst of his race. An open cannibal, Nogi follows the philosophy that he must [[TheSocialDarwinist devour the weak]] by absorbing his own subordinates. [[EstablishingCharacterMoment Making his appearance known]] by destroying the peaceful Natives that were being escorted by ZECT, Nogi leads the counterattack against ZECT during the AM Bomb operation and makes the entire Area C3 fall under control of the Worms, promising to execute civilians if ZECT doesn't give the anti-mimicry device to him. With the Worms attacking four different sections of the city at the same time, Nogi directly participates in weakening ZECT's defenses by killing a platoon that was stationed at one of the sites to stop the Worms from continuing their rampage. Going to Shibuya, Nogi brings the Worms to slaughter the soldiers at Area Z, massacring all of those that were guarding the place from him except for the last line of defense, who almost committed mass suicide by nuking the place with them inside to prevent Nogi from stealing the Masked Rider System. After failing to recruit Dark Kabuto to his side, Nogi was ultimately responsible for Tsurugi's SuicideByCop by making him remember that he is a Worm.
51* "School's Ghost Story" & "The Dangerous Younger Sister": [[FillerVillain The unnamed principal]] of Jyuka Tendou's high school is a human who willingly collaborates with the Worms all for the sake of pride and fame. Discovering the existence of the Worms after they replaced his choir group, the principal decided to take advantage of their superior abilities by forming a pact with them to replace his own students and make the Worms win at competitions instead of risking to lose with his human students. Sealing the Worms inside an abandoned part of the school that is covered by a mirror, the principal allowed a rumor to spread about the "cursed mirror" that grants the wish of desperate students but also makes them disappear, resulting in an entire basketball team going missing. After Tendou and ZECT uncovered the truth behind the mirror, the principal refused to accept responsibility and [[NeverMyFault blamed the students]] for wanting their wishes granted, telling Tendou that his own sister was the last person to have approached the mirror with a wish, which led to the Worms going after a bus filled with innocent students.
52[[/folder]]
53
54[[AC:''[[Series/KamenRiderKiva Kiva]]'']]
55
56[[folder:Examples]]
57* The ruthless [[VampireMonarch King/Bat Fangire]] is the [[BigBad lord of all Fangires]] and original Kamen Rider Dark Kiva, using his position to annihilate the Merman and Franken races and persecute Jiro, the last of the Wolfen. Discovering his wife has fallen in love with Otoya Kurenai, the King tries to force her to kill Otoya, and when she refuses to do so, the King offers the surviving members of the races he meant to exterminate a chance to live if they kill Otoya for him. Transforming them all into [[EmpathicWeapon conscious weapons]] for trying to escape from him, the King captures Otoya and torturously drains him of his life energy to feed his living castle. Threatening the life of [[OffingTheOffspring his own infant son]] to prevent his wife from seeing Otoya again after he escapes, the King's actions [[EvenEvilHasStandards disgust even his most loyal servant]] to the point that he aids Otoya, giving him the power to destroy the King.
58* [[SinisterMinister Bishop/Swallowtail Fangire]] is King's calm, psychopathic [[TheDragon right-hand man]]. A [[FantasticRacism firm believer in the superiority of Fangires]], Bishop informed the King of his wife's love for a human, resulting in Maya having her powers taken away from her. Trying to force Mio into embracing her fate as the new Queen, Bishop burns a Fangire in front of her when she refuses to kill him for having loved a human, later telling her that she must kill her LoveInterest if she wants to be a true Queen. Under Taiga's orders, Bishop uses his powers to awaken Wataru's Fangire blood, almost making him murder his own friends. Seeing Mio as a failure, Bishop assassinates her and pins the blame on Wataru, fully intending on leaving him depressed. Proudly confessing his crimes to Taiga, Bishop is kicked out of the Checkmate Four and uses a magical crystal ball to drain the souls of multiple people. Planning on bringing the previous King back, Bishop revives the defeated Fangires and orders them to murder every human they come across, sacrificing his own soul to complete the ritual just so he could become one with the King and "[[OmnicidalManiac destroy everything]]".
59* [[PsychopathicManchild Rook/Lion Fangire]] is an excitement-seeking sociopath who murdered Yuri Aso's mother twenty years before the work takes place, leading to Yuri's hatred of Fangires. A genocidal maniac, Rook drove the Wolfen race to near-extinction, leaving Jiro as the sole survivor. To sate his boredom, Rook invents a game in which he must eat a selected group of people within a given amount of time, eating ice cream if he succeeds and punishing himself with electric shocks if he fails. Inventing a new game, Rook decides to do good deeds before getting himself killed, not out of a genuine interest in kindness but merely to keep himself entertained.
60* "Unfinished: Daddy Fight" & "Pomp and Circumstance: Thunderstrike Purple Eye": [[KickTheDog Tohru Miyake/Rhinoceros Fangire]] tricks young people into believing he'll help make their dreams come true to lure them in so he can steal their life force. After killing them, he takes an item from them that relates to their dream as a trophy to put in his "Dream Graveyard". His choice of prey is based solely on a love for [[HopeCrusher crushing the dreams]] of young people and nothing else. Even [[TheHero Wataru]], who had generally tried to find the good in everyone, even Fangires, found his actions unforgivable.
61[[/folder]]
62
63[[AC:Others]]
64
65[[folder:Examples]]
66* ''[[Series/KamenRiderKuuga Kuuga]]'': While the [[Characters/KamenRiderKuugaGrongi Grongi]] is a race of {{Serial Killer}}s, three of them stand out as among the worst of their kind:
67** [[BigBad N-Daguva-Zeba]], the [[SatanicArchetype Grongi lord]], is a sadistic BloodKnight and SocialDarwinist who cares nothing for the lives of humans or his own kind. Upon being reawakened, Daguva releases his 200 Grongi, slaughtering the archaeologists who found them. Restarting a brutal game in which the Grongi hunt humans, Daguva kills over one hundred of his own kind for being too weak to take part in the killing game. When the titular Kamen Rider defeats one of his henchmen, Daguva ambushes him, mercilessly beating him and incinerating countless innocents before leaving. Continuing his systematic genocide, Daguva attempts to bring about [[ToCreateAPlaygroundForEvil "Ultimate Darkness"]], turning humans into twisted, vile creatures like himself and even after being fatally wounded, dies laughing, hoping the latter will become as evil as himself.
68** [[WouldHurtAChild Go-Jaraji-Da]], the Porcupine Grongi still stands as the standard to which other [[MonsterOfTheWeek kaijin-of-the-week]] in ''Franchise/KamenRider'' are compared to even years after he blighted television screens in Japan. Jaraji uses his upper-class privileges to choose the 90 teenage boys in Midorikawa High School's 10th grade as his targets for his game. Using super speed and poisonous darts that kills his victims from encephalitis within four days, Jaraji terrorizes and poisons all but one of his targets, condemning many of his victims to slow, brutal deaths and drives others to suicide. As those who commit suicide do not count to his Gegeru, Jaraji compensates by killing high-school boys belonging to other grades and numerous policemen. Most of the other Grongi are either required to participate in the Gegeru or [[PunchClockVillain merely see the Gegeru as a necessary duty]]. Jaraji, on the other hand, commits his crimes precisely because he enjoys himself watching living beings suffer and coldly admits this to a family before closing in on one of his targets.
69** [[SoftSpokenSadist Go-Jaaza-Gi]], the [[ThreateningShark Shark Grongi]], is the only female member of the Gebageru subgroup and a DirtyCoward who stands in contrast to her battle-loving compatriots, choosing those who cannot fight back as her targets. Assuming the form of a well-dressed, [[FourEyesZeroSoul glasses-wearing]] woman, Jaaza posts blogs on the internet to announce the massacres that she'll commit minutes prior to hunt for victims. To start her game, Jaaza infiltrated a plane and slaughtered the elderly passengers, forcing the pilot to send a distress call to the police before she killed him as well to make the plane crash; this incident alone had 244 casualties. After impaling Godai's shoulder with a harpoon, Jaaza planned on invading a cruise with 324 people on-board, most of which were [[WouldHurtAChild children]], intending on ending their lives simply because killing them would be "too easy".
70* ''[[Series/KamenRiderRyuki Ryuki]]'': [[SpoiledBrat Jun Shibaura]]/[[ManipulativeBastard Kamen Rider Gai]] is a rich, Machiavellian college student and a PsychopathicManchild who sees people's lives as tools to satisfy him. Recreating the Rider Fight in the form of a computer game that would send subliminal messages to players, Shibaura convinced his own colleagues to participate, always [[SnuffFilm recording the loser getting brutally killed]] in the process. Putting himself in the position of ORE Journal chief editor, Shibaura planned on spreading city-wide violence by sending his program to their subscribers. In his last act of malice, Shibaura kidnapped Yui to reunite the Riders in order to make a "Rider Party" where he could see them fighting each other in his own definition of the ultimate game. Brought back in 2019 as one of the six returning veterans to participate in the new Rider Fight, Shibaura leads an alliance of like-minded sociopaths to crush Shinji's opposition and develops an obsession for Tezuka, taking advantage of his fuzzy memories to [[DepravedHomosexual become his lover]], making him betray Shinji by feeding Ishida to Evildiver. To celebrate his victory, Shibaura stabs his friend to death and casually eats barbecue with the bloodied knife before sleeping with Tezuka, fantasizing about how killing his romantic partner would be a "passionate way of expressing our love".
71* ''[[Series/KamenRider555 555]]'': In this {{Cyberpunk}} world that stands as one of the [[DarkerAndEdgier/KamenRider darkest]] series in the franchise, these select two stand out:
72** [[PsychoForHire Kitazaki]]/[[DragonInChief Dragon Orphnoch]] is a Lucky Clover agent who cares more for his own enjoyment rather than the MasterRace philosophy preached by Smart Brain. A [[TeensAreMonsters sadistic teenager]] with the power to turn everything he touches into ash, Kitazaki, who lives solely for [[BloodKnight fighting]] and [[SerialKiller killing]], sees the war between humans and Orphnochs as an opportunity to never feel bored again. Shortly before the events of the series, Kitazaki took part in a massacre that left several [[Characters/KamenRider555RyuseiSchool Ryusei]] students dead, killing Mari and Sawada himself. When in the presence of other Orphnochs, Kitazaki uses his abilities to physically hurt them, such as pressing his fist against their cheeks. After obtaining the Delta Gear, Kitazaki uses it to engage in brutal confrontations with other Riders, and tortures another Lucky Clover assassin when he tries to steal it from him. If the mission he is given is not fun enough, Kitazaki creates "games" to challenge the rest of the Lucky Clover, such as promising to slap other members in the arm if he kills their target first, knowing this would leave them without a limb. In one of his games, Kitazaki decides to kill their king, the Arch-Orphnoch, a being [[WouldHurtAChild living inside the body of a little boy]], just to prove his superiority, despite having the information that this would result in the extinction of his entire race.
73** [[MadScientist Masahiko Minami]] is a xenophobic National Police Agency officer and [[FantasticRacism human supremacist]] who leads an opposition against [[Characters/KamenRider555Orphnochs Orphnochs]] to [[FinalSolution purge all of them]], living by his own sociopathic dilemma of using those who allow themselves to be used. Introduced stopping a police investigation, Minami recruits an innocent detective to spy on an Orphnoch, and orders his death when the man began sympathizing with Orphnochs. In his facility, Minami has an Orphnoch kept locked inside a glass box [[AndIMustScream as his own guinea pig]], conducting inhumane experiments to revert them back to human form. Making a deal with Smart Brain to have more subjects, Minami captures Yuka and electrocutes her, ignoring complaints that the operation could kill her, as he considers her a "worthless life" anyway. When she is saved by his prisoner, Minami promises that he is trying to work towards human and Orphnoch cooperation, but sets up a squad of heavily armed soldiers to eliminate Yuka, Kiba and Takumi, indirectly causing her death. When the laboratory is attacked by an enraged Kiba, Minami [[BadBoss leaves his staff to die]] and escapes to save his own skin. When he's found and killed by Kiba, Minami spends his last moments laughing at his face and stating that the Orphnochs will never succeed. Existing solely to show that HumansAreTheRealMonsters, Minami proved himself to be far more evil than many Orphnochs.
74* ''[[Series/KamenRiderBlade Blade]]'': In the battle royale to become the dominant species, many competitors had good qualities, but these selected few only care about themselves and crossed the ultimate line in an attempt to achieve victory:
75** [[AGodAmI Hiroshi Tennoji]] serves as the series' true BigBad and absolutely reeks of [[ItsAllAboutMe obsession for self-preservation]] and world domination by any means necessary. As the head of BOARD, he creates the Battle Fight by releasing the [[Characters/KamenRiderBladeUndeads Undead]] and manipulating his contracted Kamen Riders to take them out. As the battle progressed, he invented the Trials and the Titan Undead, all so he could buy himself time to create Kerberos, an artificial Undead with DNA from all 53 Undead that could surpass the Black Joker itself. Tennoji's invention kills the entire BOARD staff upon being born from the Stone of Sealing before he seals the artificial Undead to create a new Change Card. He uses the card to transform into Kerberos II before revealing his dream to create a new world order with himself as its ruler. Wishing to [[InTheirOwnImage remake the world under him]], his actions would produce countless tragedies throughout the series.
76** [[BloodKnight Isaka]]/[[MadScientist Peacock Undead]] exemplifies how low [[ManipulativeBastard manipulative bastards]] can go. As the first Category Jack Undead, he designed Rider System 3, a belt that allows the user to transform into Kamen Rider Leangle. Unfortunately, that same belt requires using an improperly sealed Ace card that contains the Spider Undead, meaning that its user would be mentally enslaved by the Undead (as later seen with Mutsuki). After designing the corrupted Rider System, he brainwashed many people that he was going to use as expendable slaves to create his "Ultimate Rider". When this plan failed, Isaka turns his attention to Sakuya Tachibana and attempts to retrieve him as a prototype user. Isaka knows about Tachibana's subconscious fear and takes advantage of it to [[CurbStompBattle curbstomp]] him. Isaka tricks his defeated opponent to getting addicted to [[FantasticDrug Schuld Ketsner seaweed]], lying that the aggression-inducing plant would eliminate fear. When Tachibana's girlfriend Sayoko notices her lover's addiction, Isaka smugly kills her for attempting to clean up her lover.
77** "Mysterious Hunters" & "A Traitor's Sprint": [[MoleInCharge Shinmei]]/[[MonsterProgenitor Wolf Undead]] is the third Category Jack and is, like his predecessor Isaka, a [[ManipulativeBastard calculating scoundrel]]. Possessing the unique ability to revive human corpses as his minions and having infiltrated human society as an "Undead Hunter", Shinmei goes on random killing sprees and then sends his squad to eliminate his victims, hunting other Undead in the process. Pretending to be an ally of BOARD, Shinmei completes the Black Fang, a motorbike which he had stolen from the company, with the help of Kenzaki and Tachibana, massacring his own crew afterwards and intending on using the motorbike to seal every other Undead and become the strongest.
78* ''[[Series/KamenRiderDenO Den-O]]'''s "That Person Just Now! In the Past?" & "A Clockwork Fiancé": [[PsychoForHire The Wolf Imagin]] is an easily-annoyed, psychotic berserker who ranks amongst the worst in [[BigBad Kai]]'s [[Characters/KamenRiderDenOImagin army]]. Forging a contract with Yuka Sawada, who wished to have memories of her years in high school, Wolf began vaporizing schoolgirls and giving their possessions to Yuka, all while mocking her for having a boring wish. Going to the past, Wolf wastes no time in causing even more chaos. Frustrated by the lack of orders, Wolf goes on a rampage, collapsing entire buildings and killing countless civilians.
79* ''[[Series/KamenRiderDecade Decade]]'':
80** "[[Recap/KamenRiderDecadeEp10FaizHighSchoolsPhantomThief Faiz High School's Phantom Thief]]" & "[[Recap/KamenRiderDecadeEp11555Faces1Treasure 555 Faces, 1 Treasure]]": [[FaceOfAnAngelMindOfADemon Momose]]/[[TeensAreMonsters Tiger Orphnoch]], the prideful leader of the new Lucky Clover in the [[Series/KamenRider555 World of Faiz]], is introduced as a member of a gang of bullies studying at Smart Brain High School who is quickly revealed to be a budding psychopath. Having orchestrated a series of attacks targeting other students, Momose tries to kill Takumi's best friend in front of him and orders his comrades to indiscriminately kill numerous students while he could watch and mock the victims. Not satisfied with the initial massacre, Momose gathers the survivors in a circle for them to be executed one by one, informing them that if they are lucky, they could be turned into Orphnoch.
81** "[[Recap/KamenRiderDecadeEp20TheNegaWorldsDarkRiders The Nega-World's Dark Riders]]" & "[[Recap/KamenRiderDecadeEp21TheWalkingAllRiderAlbum The Walking All-Rider Album]]": [[EvilTwin Otoya Kurenai]] is [[Series/KamenRiderKiva King]]'s substitute in the World of Negatives, possessing not only all of his FantasticRacism, but also a charismatic personality to hide the fact that he is a cold-hearted, scheming dictator. As the commander of the Dark Riders, Otoya annihilated more than half of humanity in a genocide, and leads the extermination of survivor camps, while also [[BadBoss abusing those who defy him]]. Seeking to make Tsukasa his successor, Otoya tries to [[TheCorrupter corrupt him]] into abandoning his journey and accepting the nature of his oppressive world.
82[[/folder]]
83
84!!Heisei Phase 2 Series
85
86[[AC:''[[Series/KamenRiderBuild Build]]'']]
87
88[[folder:Examples]]
89* [[Characters/KamenRiderBuildBloodStalk Evolt/Kamen Rider Evol]], the true mastermind behind the problems faced by the heroes, is an entity seeking to create a "new world" by [[PlanetEater devouring everything in the universe]], leaving only himself. Destroying planets alongside his people, the [[PlanetLooters Blood Tribe]], Evolt wiped out many civilizations before being stopped on Mars by the surviving Martian Queen Vernage. Possessing an astronaut and rendering him [[AndIMustScream aware but unable to do anything]], Evolt goes to the Earth and causes the Skywall Disaster that killed countless innocents and split Japan into three states. Under the alias "Blood Stalk", Evolt corrupts Gentoku Himuro by preying on his mind and killing his best friend and founds [[Characters/KamenRiderBuildFaust Faust]] with him and scientist Takumi Katsuragi to carry out painful experiments on kidnapped people to turn them into [[MonsterOfTheWeek Smash]]. When Katsuragi discovers his alien origins and turns against him, Evolt mind wipes him, kills an innocent man to swap his face with him, and renames him "[[Characters/KamenRiderBuildSentoKiryu Sento Kiryu]]" so he can keep using him. Desiring Ryuga Banjo, whom he corrupted with his DNA when he was only an infant, as his new host, Evolt had Ryuga's fiancée fatally transformed into a Smash to raise Ryuga's Hazard Level by increasing his rage. Inciting a war between the three states of Japan, Evolt painfully experiments on Gentoku to turn him into a weapon and takes over Sento's body, keeping his personality around so he can [[ForcedToWatch make him watch]] as he slaughters his friends. He later challenges the Kamen Riders to a final battle where they will have to reach the top of the Pandora Tower, destroying a section of Japan for every ten minutes they don't make it. Achieving his ultimate form, Evolt summons a [[UnrealisticBlackHole Black Hole]] to consume the Earth but destroys it slowly [[ForTheEvulz so he can gaze at the despair on the heroes' faces for longer]].
90* [[CorruptCorporateExecutive Juzaburo Namba]] is the greedy CEO of [[Characters/KamenRiderBuildNambaHeavyIndustries Namba Heavy Industries]] and [[Characters/KamenRiderBuildBloodStalk Evolt's]] collaborator. Profiting off the Skywall Incident, Namba was responsible for converting children into his brainwashed, suicidal ChildSoldiers and turning Seito into his PuppetState. Taking part in the creation of Faust, Namba sponsored the criminal organization with the intention of sparking a conflict between the nations to [[WarForFunAndProfit fill his pockets]]. Planning on making a weapon stronger than a nuke with the Pandora Box's energy to sell to the highest bidder, Namba tortures the mentally-broken Gentoku Himuro until he is ready to become his own Kamen Rider, implanting a chip in his body that would kill him if he disobeyed his orders. Deciding to reunify Japan into a world superpower under his law to give birth to an "immortal Namba empire", Namba engineers a massive and destructive MilitaryCoup to conquer the country and [[TakeOverTheWorld the world]], starting by taking Prime Minister Tajimi into custody, assassinating Prime Minister Mido and then sending his troops to invade Touto to be assimilated by force. Side material expands even more on his atrocities, as he had imprisoned Gentoku in an annexed [[POWCamp concentration camp]] for failed Faust experiments, a place where he was regularly beaten, and in one occasion, suffered an [[PrisonRape attempted rape at the hands of another prisoner]]. At some point, Namba had employed [[MadScientist Kaisei Mogami]] and allowed him to work on the Enigma, indirectly killing even more people and almost causing the destruction of two worlds.
91[[/folder]]
92
93[[AC:Others]]
94
95[[folder:Examples]]
96* ''[[Series/KamenRiderDouble Double]]'''s "[[Recap/KamenRiderDoubleE41E42JsLabyrinth The J Labyrinth]]" two-parter: [[BitchInSheepsClothing Makoto Uesugi]]/[[SuperToughness Jewel Dopant]] is a vain male model [[ThePerfectionist obsessed with perfection]], with a history of destroying anything he decided didn't meet his standards. Having fallen in love with his female best friend Rui Jojima, Makoto was furious to learn she and their other best friend Satoru Takeda fell in love with each other before he could confess; Makoto responded by purchasing the Jewel Memory and turning Satoru into a diamond ring to force Rui to be [[TheScapegoat his scapegoat]] as, realizing there's no such thing as a perfect person, he decided to [[AndIMustScream turn various women into perfect diamonds]]. When Rui was able to get the Narumi Detective Agency involved, Makoto played the victim to divert all suspicion to Rui before setting up her death to close the case and flee Futo to turn more women into diamonds. When Rui calls him out on his actions after being saved by Terui, Makoto responds with pride in his actions and standards before attempting to throw the diamondized Satoru into the sea to spite her.
97* ''[[Series/KamenRiderOOO OOO]]'': While the show took a balanced look at {{greed}} and showed it did not need to be bad, the following demonstrate the worst elements of it:
98** The original [[PredecessorVillain Kamen Rider OOO]], the [[AncientEvil Ancient King]], is the 800-year-old tyrant of an unnamed European land and the [[ItsAllAboutMe most selfish being]] in existence. King used the Core Medals to create the original five Greeed for the sole purpose of killing them and devouring their power; King spared neither Ankh, the one Greeed who was truly loyal to him, or the four alchemists who helped him, whom he [[UngratefulBastard rewarded]] by transforming them into [[AndIMustScream conscious, immobile]] Core Medals for centuries. Overpowered and seemingly destroyed by his own Greeed after a rule marked by the desolation of entire countries and the death of millions, King returns in the 10th anniversary movie ''Core Medal of Resurrection''. King immediately destroys most of humanity and takes over the world, killing off Eiji Hino for real after the latter saves a little girl from King's wrath, and he even kills off and absorbs his old Greeed once again after having resurrected them.
99** [[DragonInChief Dr. Kiyoto Maki]] is an obsessive sociopath who, fearing his sister would abandon him when she got married, [[SiblingMurder burns her to death]] the night before her wedding in her sleep. Helping a [[MonsterOfTheWeek Yummy]] fester for his experiments, when it hatches a swarm, Maki [[BadBoss locks his own workers inside]] and watches the beasts slaughter them. When his memories of killing his sister resurface, Maki begins plotting to [[OmnicidalManiac destroy the world]], absorbing five Purple Core Medals to transform into the Dinosaur Greeed and gain the power for his nefarious scheme. Spawning destructive monstrosities, Maki observes their behavior as "interesting", killing Kazari to absorb his Cores and gain more power for himself. Maki hopes to accelerate Eiji Hino's progression into an unstable Greeed and uses the Purple Core Medals to reduce Uva to a lifeless vessel for the Medals in the hopes it will finish his plan to destroy Earth.
100* ''[[Series/KamenRiderFourze Fourze]]'''s "Pleiades Kingdom" & "Super Cosmic Sword": [[TeensAreMonsters Tatsumori Yamada]]/[[MadArtist Aries Zodiarts]] was a transfer student who came to Amanogawa around the same time Ryusei came and became the undisputed king of Subaruboshi High. After getting the Aries switch he uses his new powers to control peoples' mental facilities that control sleep to put anyone he wants into a deep sleep. He forces the whole school into his little play-like world where everyone is graded on their performances. If they did bad jobs, then he would put them into a permanent sleep. He makes a DealWithTheDevil with Meteor, reviving Jiro if Meteor killed Fourze and he follows up on his deal despite the fact Aries could have revived Jiro without the need for the deal. He then decides to do a play called "School War", which has the Kamen Rider Club kill students before deciding to reverse the roles and have the Kamen Rider Club being tied up to poles and killed. Aries [[VileVillainSaccharineShow stands out]] in this [[LighterAndSofter lighthearted]] series as a depraved villain who will go to any length to satisfy his own amusement.
101* ''[[Series/KamenRiderWizard Wizard]]'': Even in a series where the villains forcefully tried to turn humans into [[Characters/KamenRiderWizardPhantoms Phantoms]] by making them [[DespairEventHorizon give into despair]], a select few stand out as much worse than the others:
102** [[TheBrute Phoenix]] stands out even among [[AlwaysChaoticEvil the Phantoms]] as a [[AxCrazy complete psychopath]] who will go to horrific lengths in order to make Gates to create more phantoms. His methods involve beating a lady just so her child would give into despair; he later breaks into a hospital and randomly attacks innocent people, including patients who have no connection to the VictimOfTheWeek at all. Even his compatriot Medusa is frightened of his brutal tendencies since he has gone as far as to kill a Gate before the corresponding Phantom can manifest. His sadistic tendencies are so fierce that his boss Wiseman kept him to an observatory role at first rather than being allowed to directly intervene for fear of him going out of control.
103** [[FromNobodyToNightmare Sora Takigawa]]/[[TheChessmaster Gremlin]] became a misogynistic SerialKiller after murdering his girlfriend for breaking up with him and than started to target other women matching her description before being made into a Phantom. Unlike most Phantoms who lose all aspect of their personality, Gremlin retains Sora's sadistic desire to hunt women. Pretending to care about protecting the Gate, Sora reveals he really just wanted to use her to indulge in his sadistic fantasies and then tries to kill her. Killing his boss, Wiseman, to gain power, Sora also kills Haruto Soma's LoveInterest to take her PhilosophersStone. Using it to rampage through Tokyo, Sora attempts to spread enough despair to turn all Gates into violent Phantoms while killing all the remaining normal humans in the city.
104** "[[Recap/KamenRiderWizardE30TheDayMagicDisappeared The Day Magic Disappeared]]" & "[[Recap/KamenRiderWizardE31Tears Tears]]": [[AxCrazy The Legion Phantom]] has the power to [[MindRape invade and destroy a person’s Underworld]], which he abuses to satisfy his love of destruction. Seeking anyone altruistic enough for him to consider "Beautiful"--children included--Legion puts them in a catatonic state, a process shown to be extremely traumatic. With no loyalty to anything save his lust for destroying good people, Legion made an impression despite his limited screen time.
105* ''[[Series/KamenRiderGaim Gaim]]'': [[ManipulativeBitch Redyue]] is the worst of the diabolical [[Characters/KamenRiderGaimHelheimForest Overlord Inves]]. As a vile, selfish creature, she brags about having killed her entire family and corrupts [[Characters/KamenRiderGaimMitsuzaneKureshima Mitsuzane Kureshima]] into becoming her puppet, using him to obtain human subjects for a machine that would revive the dead. Redyue aggravates the humans into launching missiles, thereby forcing her superior Roshuo to redirect the missiles to America and to declare war against humanity. Redyue also tries to mentally break [[Characters/KamenRiderGaimKoutaKazuraba Kouta Kazuraba]] by portraying him in a hallucination as an Inves being attacked by his former mentor Yuya. Moreover, Redyue has a sickening obsession over backstabbing and killing those close to her, as seen when she ruthlessly kills Roshuo after the latter defeats Kouta and [[Characters/KamenRiderGaimKaitoKumon Kaito Kumon]]. While the rest of her fellow Overlords, except for Roshuo, were definitely evil themselves, Redyue stands out for her willingness to use any means necessary to play mind games with, and to commit genocide against, humanity, simply for fun.
106* ''[[Series/KamenRiderDrive Drive]]'':
107** [[MadScientist Professor Tenjuro Banno]]/[[BigBad Kamen Rider Gold Drive]] is an [[ItsAllAboutMe egotistical]], sociopathic scientist with a god complex. After being refused funding by a potential investor, Banno has one of his Roidmude androids, Roidmude 002/Heart, assume the man's form and tortures it to take out his anger. Inserting negative emotions into the Roidmudes out of spite against his former partner, Banno's abuse leads to them becoming violently unstable, going on to rampage and kill countless people. Even after his death, Banno turns himself into a VirtualGhost, manipulating his own son into releasing his spirit before trying to kill him. Banno manipulates Medic into being operated on, leaving her a puppet loyal to him and forces Heart to serve him, lying that he will restore Medic if he does so. Ultimately planning to digitize the entire world, Banno intends to only give robotic bodies to [[AGodAmI those who will bow to him]].
108** "[[Recap/KamenRiderDriveEp3WhoStoleTheWomansSmile Who Stole the Woman's Smile?]]" & "[[Recap/KamenRiderDriveEp4WhatIsThatPridefulChaserThinking What is That Prideful Chaser Thinking?]]": [[WickedCultured 010 Paint Roidmude]] is a MadArtist whose sadism disturbs even other [[Characters/KamenRiderDriveRoidmudes Roidmudes]]. During the Global Freeze, Paint personally attacked Kiriko, turning her arm into data until she was saved by Proto-Drive, an event which traumatized her. Six months later, Paint assumed the identity of a gallery owner whom he had trapped inside a painting, and with the assistance of his apprentice, did the same thing to several women who wandered near the gallery, all while they were [[AndIMustScream aware of their situation but unable to escape]]. Realizing that Kiriko is investigating the serial kidnappings, Paint triggered her post-traumatic stress by attacking her once again. Using Mashin Chaser as a distraction, Paint planned on fleeing to another area so he could find a new hunting ground, but not before he tried to trap Kiriko in a painting, seeking to [[LovesTheSoundOfScreaming immortalize her expression of pure and sheer terror]].
109* ''[[Series/KamenRiderZiO Zi-O]]'': In this battle across time to become a king which marks the end of the Heisei era, these stand out as vile contenders for that throne:
110** [[Characters/KamenRiderZiOSougoTokiwa Sougo Tokiwa/Kamen Rider Oma Zi-O]] from the year 2068 is the Demon King of Time of [[FutureMeScaresMe the future]] who rules over the world in a totalitarian dictatorship. Once an eccentric, lonely but seemingly harmless underachiever who dreamed of becoming a king, Sougo rose to [[FromNobodyToNightmare become the most powerful Kamen Rider in history]] and used his newfound powers to establish a so-called military rule by causing worldwide destruction, killing billions and turning earth into a desolate wasteland for him to [[DystopiaJustifiesTheMeans control what remained of humanity]]. In 2068, Sougo's actions force the survivors to live in ghettos, and he personally annihilates the resistance that was formed to combat him, recruiting one of their captains as his own fanatical prophet and sending him back to the past to serve as a mentor to the younger Sougo, [[EvilMentor motivating him]] to follow his same path. Revealing that the true extent of his power could destroy time and space, Sougo openly desires to see which timeline his past-self would destroy and how he would go on about it.
111** [[TheChessmaster Swartz]]/[[Series/KamenRiderDecade Another Decade]], head of the [[Characters/KamenRiderZiOTimeJackers Time Jackers]], is a sociopathic prince from another timeline. Enraged that his sister would inherit the throne over him, Swartz set up a bus crash to kill multiple adults and [[WouldHurtAChild brainwash children]] to see who was worthy to become the powerful Oma Zi-O as a vital part of his plan. Manipulating others by turning them into monstrous Another Riders to spread destruction, Swartz is happy to murder any heroes in his way as he seeks his ultimate goal: to merge the timelines into one and [[OmnicidalManiac then destroy them all]], killing every being in the multiverse, so he may become a hero to his own world and rule it himself. When he is exposed, he happily tries to eliminate any of his old allies, even trying to murder his own sister.
112** "[[Recap/KamenRiderZiOEp11ZiOOnParade2018 Zi-O On Parade 2018]]" & "[[Recap/KamenRiderZiOEp12ThisIsMyXMyStage2013 My x My Stage 2013]]": [[ItsAllAboutMe Asura]]/[[Series/KamenRiderGaim Another Gaim]] is a member of Team Baron who, after being kicked out by Kaito Kumon, is transformed into an [[Characters/KamenRiderZiOAnotherRiders Another Rider]] by Swartz and used his power to always be on the top. Asura sends [[CantTakeCriticism any who question him]] or get in his way like Kaito and Geiz Myōkōin-—which he did to stop Geiz from saving civilians attacked by Ora and Swartz—-to an artificial version of the [[EldritchLocation eldritch Helheim Forest]], isolating them for five years until they were finally released. In this eldritch and visceral forest, Asura has monsters that will hunt his victims down, caring for only himself and his dreams.
113[[/folder]]
114
115!!Reiwa Series
116
117[[folder:Examples]]
118* ''[[Series/KamenRiderZeroOne Zero-One]]'': [[PsychoSupporter Azu]] is an EvilKnockoff of Izu created by the Ark to usher in its revival who, in contrast to the rest of [[Characters/KamenRiderZeroOneMetsubouJinraiNET MetsubouJinrai.net]], worships the Ark for the malice it spreads. After the Ark's defeat, Azu manipulates [[Characters/KamenRiderZeroOneArutoHiden Aruto]] and Horobi to become new Arks in an attempt to trigger a destructive RobotWar. When that plan falls through, Azu empowers Kamen Rider Eden in another attempt to recreate the Ark.
119* ''[[Series/KamenRiderSaber Saber]]'': [[EvilRunningGood Isaac Kanda]]/[[ForTheEvulz Kamen Rider Solomon]] is the leader of the [[Characters/KamenRiderSaberSwordOfLogos Sword of Logos]] who grew bored from spending generations watching over humanity and allied with Storious, his guild's sworn enemy, to fulfill his psychotic ambitions. Desiring to use the [[AkashicRecords Almighty Book]] to remake the world into one where "the screams of humans replace the birds chirping at dawn", Isaac [[TheCorrupter coerced]] Hayato Fukamiya into sacrificing Luna for a ritual to connect the worlds and releasing the [[Characters/KamenRiderSaberMegid Megid]], resulting in a skirmish that kills multiple swordsmen. To keep his subordinates from discovering his true ambitions, Isaac secretly killed the Four Sages and sent Reika Shindai to sow discord among the Northern Base members. He later tricks [[Characters/KamenRiderSaberToumaKamiyama Touma]] into using the ''Primitive Dragon'' book so he'll be corrupted into a feral berserker by its power, and sets [[OmnicidalManiac Bahato]] loose to use him to hunt down the swordsmen. After obtaining ''Omni Force'' and declaring himself god, Isaac delivers a global announcement goading the countries of the world into warring with each other, and resorts to destroying entire cities when violence doesn't break out fast enough. When even the Shindai siblings turn on him, Isaac mind controls Ryoga and forces him to attack his younger sister, and later uses the same trick to control Rintaro and Kento in order to force Touma to kill his own friends.
120* ''[[Series/KamenRiderRevice Revice]]'':
121** [[EvilGenius Orteca]], formerly Makoto Hatsushiba, uses Aguilera as a figurehead for the [[Characters/KamenRiderReviceDeadmans Deadmans]] while he [[TheManInFrontOfTheMan leads in secret]] and plots to sacrifice her in the ritual to reawaken Giff. To complete the ritual, [[TheCorrupter Orteca]] coaxes vulnerable people into merging with their inner demons to become monsters. After obtaining the Giff Stamp, Orteca begins using it to implant people with Gifftarians, which devour their hosts from the inside upon being born. Those Orteca uses the Giff Stamp on includes his own followers, as well as the best friend of Go Tamaki, as a way of punishing Tamaki for defecting. Orteca later begins directly feeding civilians to Giff in order to speed up the demon's revival, intent on merging with it to achieve his twisted dream of [[TakeOverTheWorld making the world his]].
122** [[AxCrazy Vail]] is a sadistic demon created from Giff's cells being injected into [[Characters/KamenRiderReviceKamenRiderVail Genta Igarashi]] and driven by a bloodthirsty love of killing others, whether they be humans or demons. Upon being born, Vail murdered Genta's parents and used his anger over their deaths to coax him into becoming a violent berserker, before [[DemonicPossession possessing him]] to satiate his bloodlust. He later tricks Genta into freeing him so he can kill a group of injured soldiers. After Genta left NOAH to be with his love, Vail set fire to their bathhouse [[RevengeByProxy in an attempt to kill Genta's pregnant wife and two young children]]. Sealed inside the Demons Driver, Vail [[LifeDrinker drains Hiromi's life force]] to break free before possessing Genta again and attempting to make him kill his three children. When Akaishi forbids him from killing the Igarashi siblings, Vail resolves to beat them within an inch of their lives instead, purely to torment Genta and satisfy his petty grudge.
123** ''Revice Legacy: Kamen Rider Vail'' prequel: [[TheBrigadier Agariyama]] is the director of [[GovernmentConspiracy NOAH]] who had an untold number of kidnapped test subjects [[PlayingWithSyringes experimented on]] to harness Giff's cells, resulting in most of them being mutated into feral demons. When Junpei Shiranami survived the procedure, Agariyama had Vail murder his parents and used his anger over their deaths to coerce him into using the Vail Driver, resulting in him becoming mentally broken and losing his memories. When Junpei escaped and met Yukimi, Agariyama has them both captured and later orders them both executed once he deems Junpei a "[[YouHaveOutlivedYourUsefulness failed experiment]]", even going so far as to personally attempt to shoot them.
124* ''[[Series/KamenRiderGeats Geats]]'': [[KillerGameMaster Suel]] is the Executive Producer and true mastermind behind the [[Characters/KamenRiderGeatsDesireGrandPrix Desire Grand Prix]]. Discovering Mitsume's miracle powers, Suel forcibly petrifies her into a "Goddess of Creation" in order to harness her powers for the DGP. Intervening to move the DGP into another era and retool it into a SadistShow, Suel instigates the Grand End to wipe the Earth to a blank state. When Mitsume resists his order to erase [[Characters/KamenRiderGeatsAceUkiyo her own son]], Suel has her disposed of and attempts to force Tsumuri to inherit her powers, killing his Game Producer Niramu when the latter protests. Using Zitt as his proxy, Suel manipulates [[Characters/KamenRiderGeatsKeiwaSakurai Keiwa Sakurai]] into bringing the Apocalypse Game, in which gangs of violent former [[Characters/KamenRiderGeatsDesireGrandPrixParticipants DGP participants]] spread chaos by rioting and murdering. After reabsorbing Zitt, Suel holds the "Final Grand Prix", where participants are forced to fight each other to the death, with those who refuse to fight being executed. When Ace Ukiyo and Tsumuri interfere, Suel has Black Tsumuri possess Tsumuri and force her to shoot Ace.
125[[/folder]]
126
127!!{{Spinoff}}s
128
129[[folder:Examples]]
130* ''[[Series/KamenRiderDragonKnight Dragon Knight]]'': [[InsaneAdmiral General Xaviax]]/[[ManipulativeBastard Kamen Rider Wrath]] is an arrogant alien warlord and the [[BigBad one behind all the tragedies]] throughout the series. Originating from the planet of Karsh, Xaviax devastated his own planet with a long-lasting civil war and decided to enslave civilizations from other planets, starting with Ventara. Having badly injured his former ally Eubulon and vented nine of the original Ventaran riders, Xaviax saw Earth as his next target. Kidnapping humans and leaving them in coma, Xaviax manipulated a group of people into becoming riders, taking advantage of Kit's love for his father, one of his victims. Xaviax's ultimate goal was to not only make humanity his next victim, but to hunt for the Ventaran riders who had escaped from him, especially Len. Succeeding in bringing riders to his side, Xaviax orders his right-hand man to vent the agents whom he considers to be loose canons, and was indifferent to his venting at the hands of a furious Len, possessing the body of a comatose patient to use him as his new puppet. Failing to achieve his goals, Xaviax made a final attempt to manipulate the riders before his death. While seemingly caring for his planet, his [[FauxAffablyEvil superficial charm]], [[LackOfEmpathy extreme methods]] and [[CardCarryingVillain proud towards his own cruelty]] reveal his [[NotSoWellIntentionedExtremist noble intentions as the empty excuses]] of an unfeeling tyrant with a superiority complex and a self-proclaimed evildoer.
131* ''[[Series/KamenRiderAmazons Amazons]]'': In a series that runs on GreyAndGrayMorality scale, these three characters stand out as the most vile:
132** [[GreaterScopeVillain Takaaki Tenjo]] is the [[CorruptCorporateExecutive Chairman]] of Nozama Pharmacy, helping develop the Amazonz, man-eating monsters that only have so long to live before becoming savage monsters. After their creation, Tenjo released the Amazonz from their lab [[TheSocialDarwinist to create an ecosystem where everyone will have to kill to survive]]. He and the other Nozama executives create the [[PrivateMilitaryContractors Nozama Protection Service]] (NPS) to deal with these beasts, but will gladly keep thousands alive in secret to ensure the Amazon Cells stay in their property, even creating Amazon Sigma from one of the dead members of the NPS to succeed the other Amazons. Tenjo is later disgusted with Sigma, not out of standards, but because he lacks the need to kill to survive. By the series's end, Nozama Pharmacy is out of business and countless Amazons are left roaming in the world to kill all around them, and when Tenjo is confronted by his co-workers for his deeds, he expresses nothing but utter delight. [[GreyAndGrayMorality In a series that shows a tragic side to both heroes and man-eating monsters alike without either side winning in the end]], Tenjo stood out as a being of unrepentant evil who, despite Nozama getting shut down, [[TheBadGuyWins ultimately ended up getting all that he wanted]].
133** "[[Recap/KamenRiderAmazonsEp7GameOfTheButchers GAME OF THE BUTCHERS]]" & "[[Recap/KamenRiderAmazonsEp8HeroOrNot HERO OR NOT]]": [[CardCarryingVillain Soji Shitashimo]] proves that [[HumansAreTheRealMonsters humans can be just as monstrous as Amazonz]]. Initially appearing to be a fitness-obsessed jerk, Shitashimo is actually a SerialKiller of women who uses his junkyard as a dumping ground. Upon realizing that he is being suspected for murdering another woman, he tries to kill two agents sent to investigate him, Nozomi and Mamoru, by burning them alive, and when that fails, he decides to torture them instead, binding them with chains and forcing one to watch as he beats the other with a pipe, mocking Mamoru for being an Amazon as he does so and telling him that he can only feel alive when beating something until it is "bloody broken and unable to move". Annoyed by Nozomi's attempts of ordering Mamoru to break the chains, he proceeds to savagely beat her in front of Mamoru with his own fists until her face is a bloodied mess, laughing at her suffering [[PsychopathicManchild like a child playing with a toy]]. Unlike the Amazonz, Shitashimo is merely a vicious sociopath who enjoys killing innocent women simply because [[ForTheEvulz he can]].
134** "[[Recap/KamenRiderAmazonsEp16PersonaNonGrata PERSONA NON GRATA]]" & "[[Recap/KamenRiderAmazonsEp17QuoVadis QUO VADIS?]]":[[MadDoctor The Elephant Amazon]] is the most repulsive New-Type to be investigated by the 4C. Using his clinic as a front to find unsuspecting victims, Elephant's method of killing his prey consists of inserting a long proboscis into the victim's ear and [[BrainFood dissolve the brain]] while they are still conscious, having done this to four people in just one week. After drinking the brain of a woman and leaving her to convulse, Elephant killed a random man, before trying to do the same to a woman who found the body, excitingly calling her his next patient. A callous sadist who [[TranshumanTreachery gladly accepted his nature]], Elephant served as a reminder that not every Amazon tried to contain the craving for human flesh.
135* ''Series/KamenRiderBlackSun'': This [[IdenticalGrandson grandfather-grandson]] duo of {{Corrupt Politician}}s showcase the [[HumansAreTheRealMonsters worst of humanity]]:
136** [[PosthumousCharacter Michinosuke Dounami]] is the [[PredecessorVillain the one who caused all the misery in the series]], having painfully experimented on countless innocent people during UsefulNotes/WorldWarII to turn them into Kaijin and mandated their food source--Heat Heaven--be made out of HumanResources. [[ManipulativeBastard Worming his way]] into the position of the Prime Minister of Japan, Michinosuke intended to use the Kaijin as his own personal army to wage wars abroad, and when a Kaijin extremist group kidnapped his grandson, Michinosuke calmly used him as a bartering chip for a deal that was transparently to his favor, essentially reducing the Kaijin to his puppets.
137** [[EvilIsPetty Shinichi Dounami]] works with the Gorgom Party to round up and execute [[PoliticallyIncorrectVillain those he deems as "undesirables"]] in order to create Heat Heaven, which he also uses to forcibly transform humans into Kaijin and auction them off as weapons and into {{sex slave}}ry, among other things. To continue the production of Heat Heaven, Dounami orders a manhunt for the Kingstone that leads to numerous deaths, and orders Aoi Izumi killed to keep her from exposing his crimes.
138[[/folder]]
139
140!!Film
141
142[[folder:Examples]]
143* ''Film/ShinKamenRiderPrologue'': In one of the [[DarkerAndEdgier/KamenRider darkest entries]] in the franchise, these two are the most vile:
144** [[BigBad Iwao Himuro]] is the paranoid head of the ISS. An uncaring, heartless BadBoss to his employees, Himuro considers those who refuse to cooperate with his projects as his own enemies, and has them either assassinated or imprisoned. Using his facility as a front for human experimentation, Himuro plans on obtaining financial gain through the mass production of super soldiers to be sold to the military industry. Forcing Shin's father to continue the research after having his former partner "resigned", Himuro denies his permission to not get his son involved, explaining that it was "too late for that". Armed with a submachine gun, Himuro guns down Ai, Shin's pregnant girlfriend, when she takes the bullet for him.
145** [[MisanthropeSupreme Giichi Onizuka]]/[[DragonWithAnAgenda Onizuka Rider]] is one of Himuro's top scientists and secretly a misanthropic SerialKiller. Harboring an agenda of his own, Onizuka sabotages an experiment, altering both his and Shin's DNA, seeking to create an army of human-grasshopper hybrids to overthrow humanity, with him as their ruler. He wants Shin to be his first recruit, once trying to convince him into embracing his violent side. As a Cyborg Soldier Level 3, Onizuka regularly commits murders around the city ForTheEvulz, primarily targeting lone women. Introduced brutally killing a woman in the middle of the night, Onizuka proceeds to cut the throats of two undercover police officers investigating the slayings, and slaughters the cops who had arrived at the scene. When his secret lab is invaded by the CIA, Onizuka nearly kills the entire squadron, and tries to repeat this when he is indirectly released from containment by a group of agents.
146* ''[[Film/KamenRiderAgitoProjectG4 Agito: Project G4]]'': [[KnightTemplar JGSDF Captain Risa Fukami]] is a dangerous combination of [[GeneralFailure incompetence]] and [[InsaneAdmiral indifference]]. An officer belonging to the GA division, Risa was in charge of an educational facility that exploited the abilities of psychic [[WouldHurtAChild orphans]]. When the high levels of ESP attracted the attention of the Ant Lords, Risa merely saw the massacre as a failed experiment. Stealing information from the G3 Unit after being assigned to work with them, Risa completes the lethal G4 System and equips suicidal volunteers with it until she can find a way for it to be mass-produced, killing some of her own soldiers in the period of two months. After kidnapping Mana Kazaya, Risa connects her to a machine that absorbs her powers and gives them to the G4 System. Realizing that she had brought the Ant Lords to her base to kill even more people, Risa cowardly uses some of her soldiers as [[HumanShield human shields]], willing to sacrifice the lives of others even in the face of death.
147* ''[[Film/KamenRider555ParadiseLost 555: Paradise Lost]]'': [[TheHeavy Leo]]/[[PsychoForHire Kamen Rider Psyga]], the Lion Orphnoch from this alternate continuity and its prequel ''Lost World'', is a SociopathicSoldier placed under supervision of Murakami who is [[TheDreaded feared]] by humans and Orphnoch alike. A foreign who arrived in Japan to help with Smart Brain's cause, Leo was given the Psyga Gear after having found an extremely injured Murakami and demanding an Emperor Belt for himself, or else he would leave him to die. Leo joined Smart Brain's paramilitary solely to kill humans and have a chance to fight with other Orphnoch, leading the Riotroopers in the genocidal campaign against the human population. [[EstablishingCharacterMoment Introduced]] murdering three members of his own race with no hesitation, Leo participates in attacks against the Human Liberation Army at their sanctuary, personally killing Kusaka and leaving several civilians dead or injured, later taking the opportunity to bomb the place. Shortly after kidnapping Mari, Leo tried to stop Takumi from saving her, intending on having her executed on live television.
148* ''[[Film/KamenRiderBladeMissingAce Blade: Missing Ace]]'': [[BigBad Junichi Shimura]]/[[BitchInSheepsClothing Kamen Rider Glaive]] is the real identity of the Albino Joker, the EvilCounterpart to both Kazuma Kenzaki and Hajime Aikawa. Joining BOARD as the replacement for Kamen Rider Blade, Shimura became the team leader of the Ace Riders and used them to further his own goals, starting by killing the president of BOARD and then releasing half of the Undeads, allowing them to massacre humans just to seal them again as part of a ritual that would grant him ultimate power, disposing of his two subordinates after they had served their purpose. Sacrificing Amane's life energy to have control over an EldritchAbomination, Shimura was an [[AmbitionIsEvil ambitious monster]] whose need for power knew no limits.
149* ''[[Film/KamenRiderKabutoGodSpeedLove Kabuto: God Speed Love]]'': [[TheHeavy Issei Kurosaki]]/[[TheBrute Kamen Rider Caucasus]] is ZECT's legendary SociopathicSoldier and an eccentric thug who views strenght as beauty. [[PsychoForHire Hired]] to destroy Neo-ZECT troops and help with the Jacob's Ladder project, Kurosaki becomes notorious for his enormous bodycount and habit of leaving roses on his victims' corpses. After executing Neo-ZECT leader Hidenari Oda, Kurosaki joins ZECT's inner circle in a conspiracy to [[ColonyDrop annihilate humanity with a second meteor]] filled with dormant Worm eggs. When confronted by Tendou as to why he would let the Worms rule earth, Kurosaki confesses to not caring for the lives of both humans and Worms, merely wishing to satisfy his [[TheSocialDarwinist Darwinistic]] philosophy. Severely injuring renegade ZECT agent Arata Kagami in a space station, Kurosaki breaks the window of his escape pod out of spite, leaving him to freeze and suffocate to death.
150* ''[[Series/KamenRiderDenO Den-O]]: I'm Born'': [[StrawNihilist Gaoh/Kamen Rider Gaoh]] is an infamous time criminal who specializes in stealing Time Trains, and is the leader of his own gang of renegade Imagin to further his selfish goals, wishing nothing more than the [[TheEndOfTheWorldAsWeKnowIt destruction of time itself]] simply because he grew bored of it. After invading the [=DenLiner=] and taking its passengers as hostages, Gaoh goes back in time and obtains the [=GaohLiner=], destroying an entire village as "practice". Travelling to the day when Ryotaro was born, Gaoh forces him to watch as he erases the city and its people from time, turning the place into a desolated wasteland and planning on [[OmnicidalManiac repeating this process with the entire world]].
151* ''[[Series/KamenRiderKiva Kiva]]: King of the Castle in the Demon World'': [[SatanicArchetype Arc/Kamen Rider Arc]] is the ancient ruler of the Legendorga and a mortal enemy to all the other Demon Races for his genocidal behavior. Countless years after being [[SealedEvilInACan sealed]] within a coffin by the first Kiva, Arc invaded the body of death row inmate Takashi Sugimura when he accidentally found his coffin, preventing him from aging or getting executed for 22 years. In 2008, Arc helped Sugimura in breaking out of prison by releasing an energy blast that [[CopKiller killed all the officers]] around him. Reunited with his loyal subordinates, Arc places Sugimura in a catatonic state until he's fully revived within him, resuming his role as the lord of the Legendorga and planning on annihilating humanity. Using the power of the Mummy Legendorga to enslave humans en masse and start a ZombieApocalypse, Arc magically reproduces the screams of his victims with his own instruments to [[LovesTheSoundOfScreaming enjoy their suffering]]. When Wataru finally reaches Arc, he forcibly baptizes Wataru into a Half-Fangire Half-Legendorga creature to make him his own pet as a more sadistic way to end Kiva's line, ordering Wataru to murder his own father.
152* ''[[Film/KamenRiderDecadeAllRidersVsDaiShocker Decade: All Riders vs. Dai-Shocker]]'': [[TheChessmaster Nobuhiko Tsukikage]] is a slimy member of Dai-Shocker who, through treachery and manipulation, became their new Great Leader. Acting as the seemingly loyal butler of the Kadoya family, Tsukikage's real identity is that of [[Series/KamenRiderBlack Shadow Moon]] from another reality where [[AdaptationalVillainy he lacks all of his original counterpart's sympathetic qualities]]. Keeping a close eye on Sayo Kadoya for possessing the source of Dai-Shocker's power, the Stone of the Earth, Tsukikage manipulates Tsukasa with the belief that he could stop the destruction of worlds by defeating the previous Riders, helping him in setting up the battle royal tournament, which doubles as a ritual to raise the Dai-Shocker Castle. After Tsukasa briefly resumes his role as the Great Leader of Dai-Shocker, Tsukikage takes advantage of Sayo's hatred towards her brother to organize a coup, [[TheUsurper swiftly overthrowing him]] to assume the throne for himself. Under his leadership, Dai-Shocker launches an ultimatum on the multiverse, ordering thousands of their own soldiers to [[SuicideAttack perform kamikaze attacks]] and then releasing a legion of monsters to slaughter those who survived as part of their quest to assimilate all worlds into an interdimensional dictatorship.
153* ''[[Series/KamenRiderOOO OOO]] & [[Series/KamenRiderDouble W]] Featuring Skull: Movie War Core'': [[KillerCop Seiichiro "Matsu" Matsui]]/[[SpidersAreScary Spider Dopant]] is the former partner of Sokichi Narumi, who became the first known Dopant with the Gaia Memory of the Spider. [[StalkerWithACrush Obsessed]] with singer Melissa, Matsui threatened the lives of everyone at her concerts if she did not perform to his satisfaction and infected others with spider bombs that would detonate with them [[TouchOfDeath in the presence of their loved ones]]. Surrendering to his sadistic drives and [[DrivenByEnvy jealous hatred]] of his partner, he went on a bombing spree to destroy Futo city, laughing while countless people lost their lives. Even after being defeated, he used a spider bomb to keep Sokichi from ever being near his daughter Akiko again.
154* ''W Returns: Eternal'': [[MorallyAmbiguousDoctorate Dr. Prospect]]/[[BigBad Eyes Dopant]] is a Foundation X scientist who kidnapped people from all over the world to make them into, in his own words, "lab rats" for his Quark Project by giving them PsychicPowers. When he arrives on the scene, every one of these people with psychic powers are utterly terrified of him, showing how horrifically he treated them. Even worse is his Heaven's Fall plan, which was so vile that Utopia Dopant [[EvenEvilHasStandards considered it a brutal act]]. Prospect would blast the area with an electric pulse and that would kill anyone that had not lived up to his standards for the project, referring to this as "cleaning out the test pool". When Daido foils his plan, it is revealed that was merciful compared to what happens if they try to escape him. The eyes he implanted on them to watch them are used to kill them when they leave his compound. Dr. Prospect then [[EvilLaugh laughs his head off]] at the fact he'd just slaughtered a village of innocent people while Katsumi is in shock over the massacre of the village he'd tried to save. His actions are so horrific that it [[DrivenToMadness drove]] Katsumi insane.
155* ''[[Film/KamenRiderOOOWonderfulTheShogunAndThe21CoreMedals OOO Wonderful: The Shogun and the 21 Core Medals]]'': The mad alchemist [[AGodAmI Gara]], originally one of the four alchemists ordered by King OOO to create the Core Medals from him, is unleashed in the present day after having been sealed by the King for centuries. Gara immediately takes over King OOO's designs for his own, massacring the archaeological team that finds him and taking over the body of a nearby woman while attempting to kill her son in her body. Gara creates time distortions all throughout Tokyo, unleashing dinosaurs to rampage through the city and stranding Eiji and his friends in the Edo period, gauging the greed of the populace and trying to tempt Eiji into accepting a bargain that would result in the village of people he's saved vanishing from existence. Gara ultimately plans to [[TheEndOfTheWorldAsWeKnowIt obliterate the entire world]], building up a new world [[InTheirOwnImage of his own order]] atop the ashes to rule forever.
156* ''[[Film/KamenRiderXKamenRiderFourzeAndOOOMovieWarMegaMax Fourze & OOO: Movie War Mega Max]]'': [[BigBad Lem Kannagi]]/[[AGodAmI Super Galaxy King]] is a member of the insidious Foundation X and wishes to use the power of the Astro Switches and the Core Medals from the future to become an all-powerful being. He will do absolutely anything to accomplish this, while taking a sick glee in rubbing his advantage in the faces of his enemies whenever he gets the chance. He essentially kills Gentaro's girlfriend, Nadeshiko for the SOLU she's composed of, and then rubs that fact in Gentaro's face. He also had no problem killing anyone that gets in his way without an ounce of remorse, or creating clones of all the [[Series/KamenRiderOOO Greeed]] and [[Series/KamenRiderW Sonozaki Dopants]] for his own evil purposes of ruling all of humanity.
157* ''[[Film/KamenRiderWizardInMagicLand Wizard in Magic Land]]'': [[EvilChancellor Prime Minister Orma]]/[[DragonInChief Kamen Rider Sorcerer]] is Emperor Maya's deceitful advisor and secretly the Drake Phantom. Kidnapping Koyomi to perform a ritual that would create Magic Land, Orma assumes a high-ranking position and takes advantage of Maya's hatred for magic to use him as a PuppetKing. Routinely kidnapping the citizens of Magic Land, Orma sacrifices them to construct the Thanatos Vessel, a machine capable of driving all mages living in Magic Land into despair, leaving only the bones of his victims as evidence of his crimes. When the Thanatos Vessel is activated, Orma mercilessly mocks Maya with the information that he condemned Magic Land, having manipulated him not because it was essential to his plan, but simply because [[ForTheEvulz he liked the idea]].
158* ''[[Film/KamenRiderXKamenRiderGaimAndWizardTheFatefulSengokuMovieBattle Gaim & Wizard: The Fateful Sengoku Movie Battle]]'':
159** ''[[Series/KamenRiderWizard Wizard]]: The Promised Place'': [[TheAssimilator The Ogre Phantom]], the first BigBad, is a power-hungry, cannibalistic Phantom who [[CannibalismSuperpower hunts and devours other Phantoms to gain their abilities]]. Unable to be contained by Wiseman, Ogre targeted [=WizarDragon=] to be his next victim, intending on devouring him to become the strongest Phantom in existence. Stealing the Hope Ring from Haruto, Ogre uses it to resurrect a despair-filled Koyomi, [[KickTheDog asking]] if he will get her killed again or leave her alive to wreak havoc. Invading Haruto's Underworld with Legion's powers, Ogre attempted to consume [=WizarDragon=], [[EvilCannotComprehendGood incapable of realizing that it was now Haruto's symbol of determination]].
160** ''[[Series/KamenRiderGaim Gaim]]: Sengoku Battle Royale!'': [[HeroKiller Bujin Gaim/Kamen Rider Bujin Gaim]], the second BigBad, is the alternate counterpart of Kamen Rider Gaim in an AlternateUniverse where warring tribes accompanied by Bujin Riders strive for supremacy. Beholden to no lord, unlike his fellow Bujin Riders, Gaim leads his armies and exterminates clan after clan in his path of conquest, tearing apart countries while [[YourSoulIsMine capturing the souls]] of the Bujin Riders and massacring everyone else. With an army of enslaved Bujin Riders and the power of the "Miko of Fate" whom he seeks to sacrifice, Bujin Gaim desires nothing less than to [[TakeOverTheWorld rule the world]].
161* ''[[Series/KamenRiderGaim Gaim]]: Gaiden: [[Film/KamenRiderGaimGaidenKamenRiderDuke Kamen Rider Duke]]/[[Film/KamenRiderGaimGaidenKamenRiderKnuckle Kamen Rider Knuckle]]'': [[FarEastAsianTerrorists Kugai Kudo]]/[[AGodAmI Kamen Rider Saver]] is the former director of the [[Characters/KamenRiderGaimYggdrasillCorporation Yggdrasill Corporation]] Laboratory before Ryoma Sengoku. After having his physical body destroyed during Ryoma's first experiment involving a Lockseed, Kudo became a supernatural entity who proceeded to form his own ApocalypseCult, the Black Bodhi. Mass-producing the Zankuro Lockseeds, Kudo brainwashes innocent civilians with them and forces its users to commit suicide bombings, leaving the man behind Neo Baron to carry out his legacy by activating the Saver System, which would wipe out all of Zawame City except for the "strong". Returning in the TieInNovel, Kudo provides the TheMafiya and a rebel army from a South Asian country with equipment, including the Zankuro Lockseeds. Spreading a wave of crime in Zawame City by giving the Zankuro Lockseeds to a gang leader, Kudo manipulates more people into joining his cult as the only way to salvation and has the Saver System control the minds of countless people in the city, planning on assimilating all of humanity into Overlords.
162* ''[[Film/KamenRiderHeiseiGenerationsFinalBuildAndExAidWithLegendRiders Heisei Generations FINAL: Build & Ex-Aid with Legend Riders]]'': [[AGodAmI Kaisei Mogami]] is a MadScientist with an InferioritySuperiorityComplex. Believing himself to be smarter than his former partner, Takumi Katsuragi, Mogami began working for Juzaburo Namba and teamed up with his alternate self, a Foundation X researcher. Creating the Enigma, Mogami intended to use his machine to merge the two worlds and collide them with each other, leaving only him alive as an omnipotent being, the Bikaiser. Using innocent civilians as batteries by infecting them with Nebula Bugsters, Mogami revives the [[Series/KamenRiderFourze Horoscopes]] and the [[Series/KamenRiderOOO Greeed]] to distract the Riders, ordering Ankh to attack Eiji, fully knowing that he was his best friend, while continuously mocking the Riders with the information that they could watch the destruction of their worlds.
163* ''[[Film/KamenRiderAmazonsTheLastJudgement Amazons: The Last Judgement]]'': [[HalfHumanHybrid Einosuke Mido]]/[[WouldHurtAChild Kamen Rider Amazon Neo Alpha]] is the militant anti-Amazon director of the Amazon Livestock Project and one of the worst examples of a BoomerangBigot in the franchise. As a human-Amazon hybrid working for the pro-human leader of 4C, Mido keeps the original Alpha as his slave and routinely takes his cells to raise herbivore Amazon children, brainwashing them with the nihilistic philosophy that they are born to serve humans, converting an {{orphanage|Of Fear}} into his own Amazon Farm. When the orphans are ready, Mido sells them to rich humans and they are butchered to be made into exquisite food. After one of his orphans retaliates by killing an important politician who would greenlight his project, Mido is furious to see that such "cattle" could "dare defy noble humans" and rampages through the orphanage and outside, gunning down several orphans in his path while informing them that "cattle don't need dreams".
164* ''[[Film/KamenRiderHeiseiGenerationsFOREVER Heisei Generations FOREVER]]'': [[BigBad Tid]]/[[Series/KamenRiderKuuga Another Kuuga]] is a [[Characters/KamenRiderZiOTimeJackers Time Jacker]] who attempts to conquer the world by completely eradicating the history of the Heisei Riders, taking the young child Shingo who exists as a singularity point in time–-thus keeping the Kamen Riders existent in the world–-and sealing him away forever to destroy their timelines and render them as [[TheFourthWallWillNotProtectYou nothing more than fiction in his world]]. Attempting to brainwash the heroes and trying to murder Shingo's own brother, Tid eventually raises a tower in the middle of a large city and has monsters wreak wanton havoc all throughout the city, eventually assuming his form as Another Ultimate Kuuga and vaporizing swathes of innocents himself. Tid attempts to [[OmnicidalManiac annihilate everything that lives]] in the throes of his breakdown, declaring he alone "deserves to smile".
165* ''[[Recap/KamenRiderBuildNEWWORLDKamenRiderCrossZ Build NEW WORLD: Kamen Rider Cross-Z]]'': [[GreaterScopeVillain Killbus/Kamen Rider Killbus]] is the flamboyant king of the Blood Tribe and [[Characters/KamenRiderBuildBloodStalk Evolt's]] abusive older brother who turned his own people into a faction of intergalactic exterminators to [[OmnicidalManiac kill everything that exists in the universe]], including himself, for fun. Years before the events of the show, Killbus [[WhereIWasBornAndRazed destroyed his own home planet]] and ordered the rest of the Blood Tribe to begin their campaign of mass genocide to annihilate other civilizations across the universe. Searching for his brother to reclaim the Pandora Box for himself, Killbus massacres a news team and tries to kill him to finally achieve his destructive dream.
166* ''[[Film/KamenRiderZiOOverQuartzer Zi-O: Over Quartzer]]'': [[EvilOverlord SOUGO Tokiwa]]/[[Series/KamenRiderBlackRX Kamen Rider Barlckxs]] is the leader of Quartzer. [[GreaterScopeVillain Orchestrating]] the events of ''Series/KamenRiderZiO'', he, after Sougo unlocked Grand Zi-O's power, sent Kagen and Jogen to the Sengoku Era to eliminate Krim Steinbelt's ancestor and thus prevent the creation of the Drive Driver, which would in turn negate the Grand Zi-O Ridewatch. When Black Woz steals Ridewatches and delivers them to SOUGO, he reveals that he was the mastermind behind Sougo's rise and how he used Sougo as a "body double". Defeating Zi-O and imprisoning him SOUGO begins his ultimate plan: to use a portal to [[OmnicidalManiac smash the World of Zi-O into the world from the first year of Heisei and erase the history of the Kamen Riders]], so that he will rule it as King of Time; said plan, if successful, would destroy all life in the multiverse. When Black Woz betrays him, Tokiwa stabs him with his sword.
167[[/folder]]
168
169!!Literature
170
171[[folder:Examples]]
172* ''[[Series/KamenRiderKuuga Kuuga]]'' novel, by Naruhisa Arakawa: [[GeniusBruiser Go-Raio-Da, the Lion Grongi]] is the most successful player of the [[DeadlyGame Gegeru]], possessing the highest number of intended victims: 1.6 million. Posing as a young amnesiac, Raio was adopted by an important figure in Japan and quickly became a [[VillainWithGoodPublicity beloved politician]], using his connections to invent a drink called Lionel, [[TamperingWithFoodAndDrink tainting it]] with his own secretions, which he could telepathically control to damage the human brain. Disposing of his foster father as a way to increase the sales of Lionel across the country, Raio had over a thousand people killed in his "little sideshow", gleefully mocking an airplane pilot who had plunged into a building.
173* ''[[Series/KamenRiderRyuki Ryuki]]'' novel, by Creator/ToshikiInoue: [[PsychopathicManchild Takeshi Asakura]]/[[TheHeavy Kamen Keiyakusha Ouja]] is even more depraved than his original counterpart. Killing his mother when he was still an [[EnfantTerrible infant]], Asakura graduated into a SerialKiller by the age of six, killing two other children specifically on their birthdays and two counselors. Living in a homeless colony where he was idolized by the people, Asakura repeatedly stabbed the village's elder in the head and committed a killing spree targeting those who loved him, mutilating a man even after the latter had hugged him. While hiding, Asakura attacked a group of children with an ax and hung the bodies of five police officers from tree branches. Arrested for killing countless victims, two of which were Miho's parents, Asakura accepted the offer of becoming a Contractor merely because it gave him an opportunity to [[TheUnfettered torment people without having to worry about consequences]], going as far as to remove Raia's intestines. After barricading himself inside a convenience store, Asakura brutally murdered the staff members and customers, dismembering their bodies afterwards. Destroying lives simply because people smelled horrible to him, Asakura was a heartless savage who wished to fight for eternity.
174* ''[[Series/KamenRider555 Faiz]]: Seiden: Grotesque/Deformed Flowers'', by Creator/ToshikiInoue: [[StalkerWithACrush Masato Kusaka]]/[[TheRival Kamen Rider Kaixa]] manages to be [[AdaptationalVillainy much more repugnant and heinous]] than he already was in the show. In the past, Kusaka was a lonely and bullied orphan who only had his friend Mari to keep him company, but unbeknownst to her, Kusaka only saw her as a possession, rather than a real friend. When his classmates are attacked by an Orphnoch, Kusaka [[FantasticRacism generalized the entire race]] as being monstrous abominations who deserve to be destroyed by him, even if there are good-hearted Orphnochs. Upon getting hold of the Kaixa Gear, Kusaka took the chance to try and [[FinalSolution kill all Orphnochs]] and keep Mari only to himself. Kusaka was responsible for the murder of Yuka, another bullying victim and a close friend to [[BigBad Kiba]], driving him to hate the human race. Not satisfied with his crimes, Kusaka rapes the underaged Mari, not caring if the assault had left her hopeless and depressed. Kiba is [[RapeIsASpecialKindOfEvil so disgusted]] by this that he personally [[AnArmAndALeg rips off Kusaka's limbs]] as punishment for his crime. Later, Kusaka resurfaced once again to make Mari's life a living hell, but was ultimately stopped and killed by [[TheHero Takumi Inui]]. A calculating, antisocial bigot who saw others as mere objects for him to use in his genocidal quest, Kusaka served as a brutal example of how even the worst kinds of people can become Riders.
175[[/folder]]
176
177!!Manga
178
179[[folder:Examples]]
180* ''[[Series/KamenRiderBlack BLACK]]'' manga, by Creator/ShotaroIshinomori: [[FutureMeScaresMe Kohtaro Minami]]/[[TheDreaded Kamen Rider Black]] himself is the [[EvilOverlord Demon King]] in the BadFuture of 2018. Achieving the position of Gorgom's majesty by killing his rival stepbrother, Kohtaro started a war by launching nuclear bombs towards every continent, eradicating human civilization and forcing the few survivors to live in tribes. Kohtaro routinely orders his troops to attack any colony that they come across and kill everyone inside, allowing them to dismember corpses and slaughter [[WouldHurtAChild babies]]. Recognizing his younger-self and desperately trying to preserve his own existence, Kohtaro argues to have done nothing wrong as he was "simply the ruler of this world". Proudly calling himself a "truly all-powerful Demon King", Kohtaro reveals that he has drained the energy of the planet just so he could "take this world to hell with me" in the event of an assassination.
181* ''[[Film/KamenRiderZO ZO]]'' manga, by Kazuhiko Shimamoto: [[InconsistentSpelling D(o)ras]] is the monstrous EvilCounterpart of the titular Kamen Rider, and [[AdaptationalVillainy far more evil and intelligent]] than he was in the film. Created by Dr. Mochizuki as Masaru Aso's superior successor, Doras trapped Mochizuki in a pile of biomass when he refused to complete his body and decided to go after his only son, Hiroshi, planning on using the boy as a hostage. After arriving at a junkyard, Doras assembles a body for himself and destroys everything in his path, leaving an entire block filled with corpses before converting Masaru's LoveInterest into a grotesque monster who proceeded to kill even more people, forcing Masaru to end her life. Suspending Hiroshi with tentacles, Doras threatens to execute the boy in front of his father if he doesn't help him in [[AGodAmI ruling the universe as a god]].
182* ''[[Manga/KamenRiderKuuga Kuuga]]'' manga chapter 1--"Resurgence": [[StarterVillain Akira Harada]] is a psychotic SerialKiller who, upon witnessing the first player of the Gegeru, Zu-Gumun-Ba, the Spider Grongi, massacring humans on a railway, decided to worship Gumun as his goddess. A registered sex offender, Harada had tried killing himself for his goddess, and when he failed, Harada came up with the idea of "sharing his dream" with other people. Prior to having his identity revealed via DNA analysis, Harada had already murdered four women; by opening their chests, filling them with gunpowder, and burning them alive so they could become "human fireworks". When encountered by the detective investigating his murders, [[FriendOnTheForce Kaoru Ichijo]], Harada had killed another woman, and laughed at her death. Transported to an ambulance after attempting suicide, Harada slits the driver's throat and brags about being able to resume his serial killings. Harada is found by Gumun on the parking lot, and when he sees the remains of the creature's victims, he feels joy, seeing this as his goddess's work. A [[PsychopathicManchild childish maniac]] with an obsession for fireworks, Harada was proof that [[HumansAreTheRealMonsters the Grongi are not the only beasts]] roaming Tokyo.
183[[/folder]]

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