Characters / Kamen Rider Zero-One: Movie-Exclusive Characters

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This is a partial character sheet for Kamen Rider Zero-One. Visit here for the main character index. Subjective trope and audience reactions should go on the YMMV page.

Characters from Kamen Rider: Reiwa The First Generation

Finis

Finis

Portrayed by: Rina Ikoma

The Last Time Jacker.

The main antagonist of Kamen Rider: Reiwa The First Generation. Finis is a Time Jacker whose actions altered the history of the Daybreak Incident.

For tropes related to Another 1 see Kamen Rider Zi-O: Another Riders.

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• All There in the Manual: Finis' name and their reason for wanting to avenge Swartz wasn’t mentioned in the film.
• Ambiguous Gender: Official material states that Finis is a genderless Time Jacker.
• Armor-Piercing Question: Talks about the Cross of Fire, the concept of Kamen Riders being flawed creations compared to their creators, and the monsters who continued in that path.
  ”Aren't the powers of Riders derived from evil itself?”
• Batman Gambit: Finis distorted the timeline of Zero-One with the creation of Another Zero-One, all so they could lure Sougo to Aruto's world and take his power, then take revenge on him for killing Swartz by becoming Another 1 and wiping out the entire history of Kamen Rider completely.
• Big Bad: Finis is the main cause of the events of Kamen Rider: Reiwa The First Generation, having altered history by giving Will the Zero-One Anotherwatch as part of a plan to lure out Sougo and steal the powers of the Riders from him.
• Contrasting Sequel Antagonist: To Tid from the last Crossover movie, Heisei Generations FOREVER.
  • Tid is a "Super" Time Jacker who exists in a world where Kamen Riders are fictional television characters, whereas Finis is from a world where Kamen Riders do exist.
  • Tid appeared in the last entry of the Heisei era, whereas Finis appeared in the first entry of the Reiwa era.
  • Finis is an actual member of the Time Jackers and loyal to Swartz, whereas Tid, despite being a Time Jacker himself, doesn't appear to have any tie to Swartz or the Time Jackers whatsoever.
  • Tid became Another Kuuga so he could be the only person in the world that could smile and erase the Heisei Era where it first began. Finis became Another 1 to get revenge on Sougo and erase the Kamen Riders’ history by erasing the first Rider himself.
• Dragon Their Feet: Finis is in fact loyal to Swartz, and seek revenge against Sougo by following their master’s plan of destroying the Kamen Rider multiverse by removing the very first Rider, Ichigo, and erase all of them as a result.
• Horrible Judge of Character: Remaining loyal to someone enough to avenge them seems not bad on paper, but as shown in Zi-O’s own series, Swartz was ultimately only looking out for himself to become a Reality Warper, and probably would have disposed of her as well, if Swartz lived a little bit longer.
• It's Personal: The reason why they are hostile towards Sougo. They were loyal to Swartz and want revenge, hence why they chose to target the Reiwa Era Kamen Rider Zero-One, one of his creations, and distort his history so they could lure the King of Time out and take his power before using it to become Another Ichigo to erase all of the Kamen Riders' history.
• Light Is Not Good: In contrast to the Time Jackers from Zi-O, Finis is garbed in pure white attire. Finis is also one of the most steal Aruto's history as a Kamen Rider to do so and is indirectly responsible for Will murdering Korenosuke Hiden in the altered timeline.
• Meaningful Name: Finis, in Swedish, typically means "closing time" or "the end." Alternatively in Latin and English, Finis can also mean “end” and “finish” respectively. Fittingly, they are (so far) the last Time Jacker to appear, and as a season’s natural run ends with its crossover with the following season barring Direct-to-Video specials, it makes them the final villain of the Heisei era on either television or film.
• Never Trust a Trailer: Promotional materials stated that Finis was a Well-Intentioned Extremist who altered Zero-One's history to prevent the tragedy of Daybreak Town from ever happening, with the trailer revealing that said actions led to Will murdering Korenosuke and starting a war against the human race. They are far from being well-intentioned and set the incident up to lure out Sougo so she could take revenge for Swartz.
• No Name Given: Finis' name is not mentioned in the film and is only revealed in promotional material.
• Not-So-Well-Intentioned Extremist: While Finis’s actions prevented the Daybreak Town Accident, they also led to Will murdering Korenosuke Hiden and the Ark successfully launching and waging a Robot War against humanity. Not that they care, as their goal was always to lure out Sougo and steal the powers of the Riders from him.
• Remember the New Guy?: Despite revealing themselves to be a member of the Time Jackers that was loyal to Swartz, they were never mentioned or even hinted at in Zi-O.
• Undying Loyalty: To Swartz. This loyalty is what kickstarts the events of the film when Sougo kills Swartz.
• Wham Line: “I shall become the first Kamen Rider!”

Will/Another Zero-One

Will/Another Zero-One

Portrayed by: Soko Wada

Korenosuke's Traitorous Secretary.

Korenosuke's personal secretary Humagear who was granted the powers of Another Zero-One.
See the entry for Another Zero-One on the Kamen Rider Zi-O: Another Riders page.

Characters from Kamen Rider Zero-One: REAL×TIME

S/Kamen Rider Eden (unmarked spoilers)

Rihito Isshiki/S/Kamen Rider Eden

Portrayed by: Hideaki Ito (live), Yuji Nakata (suit)

A mysterious man who was given the Eden Driver by As, transforming him to Kamen Rider Eden.

Tropes that apply to him in general

Leader of Thinknet

• An Arm and a Leg: In his first two fights with Aruto, the latter manages to slice off his arm. It doesn't stick thanks to the nanomachines in his body growing him a new one.
• Anti-Villain: The whole reason he's enacting global terrorism is to transfer people's consciousnesses into virtual reality to populate a virtual world for his dead fiancée. Although sympathetic, he's still a terrorist bent on Restarting the World and this doesn't stop Aruto and the others from interfering with his plans.
• Batman Gambit: He debuts his plan with grand, hammy fanfare, even directly challenging Aruto to come and stop him. This sounds like a terrible idea, except for one thing: he doesn't actually have his world-ending superweapon yet. He needs Zea's ability to make new Progrise Keys for that, and Aruto directly bringing the Zero-Two key to him was the key to his plan actually getting anywhere.
• Blasphemous Boast: Doubles as Badass Boast.
  "If God created the world in 6 days, then I will destroy it in 60 minutes and create paradise."
• Boring, but Practical: Similarly to Jogen from the previous summer movie, S has no need for theatrics, creating and becoming Kamen Rider Eden with minimal fanfare. Ironically, the Eden Zetsumerisekey is anything but simplistic, being a retooled Amazing Caucasus key and constantly blaring dramatic stings and music while transforming.
• Brain Uploading: Isshiki died years ago, with the corpse to prove it. S is actually his consciousness uploaded into a nanomachine swarm.
• The Cameo: He makes a brief appearance during The Stinger, corrupting a blank Progrisekey and a Zero-One Driver into the Eden Zetsumerisekey and Eden Driver respectively before transforming into Eden for the first time. He makes his proper debut as the main villain of REAL×TIME.
• Combat Pragmatist: He defeats the extremely powerful, quantum computing-based Zero-Two by taking the more logical approach and simply yanking the Zero-Two Driver off of Aruto.
• Contrasting Sequel Antagonist: To Leader of Quartzer/Kamen Rider Barlckxs/SOUGO Tokiwa, the main villain of Kamen Rider Zi-O: Over Quartzer. While they both are leaders of a group trying to change the world, the Leader of Quartzer is trying to rewrite history and replace it with his own, while S wants to upload humanity into a virtual reality for the sake of his fiancee.
• Dark Messiah: S's followers see him as a prophet or god-like figure and believe he will bring them to paradise.
• Dead All Along: Zigzagged. Rihito Isshiki has been dead for years, but prior to his death, he managed to upload his consciousness into the nanomachine swarm that would go on to become S.
• Disc-One Final Boss: He's Aruto's biggest threat for the duration of the movie, but after his defeat, his role as the Big Bad is displaced and handed over to Behru, who serves as the film's Final Boss.
• Evil Counterpart: To Aruto. Both suffered a great tragedy during the Daybreak Incident, Aruto losing his HumaGear father Soreo and S losing his fiancée Akane. Whereas Aruto managed to move on from the loss of his loved one and focused on the present, S wants nothing more than to reunite with his fiancée and is willing to go to some extreme lengths to do so.
• Foil: To the Ark. The Ark was an artificial intelligence who, after being exposed to humanity at their absolute worst, wanted to render all of humanity extinct and treated its followers as mere pawns and was more than willing to throw them away after they could no longer prove useful. S is a human infected with nanomachines who kickstarts a series of worldwide terrorist attacks to create a paradise for humanity in the form of a virtual reality and digitizing people's consciousnesses. Regarding their followers, the Ark corrupted three of the four members into becoming its followers and using them however it pleased with no regards to their own well-being. In contrast, S offered Thinknet members the opportunity to build a new world order. While he does plan to ultimately cut them loose, S at least has the excuse of washing his hands of people who willingly caused untold amounts of destruction, even thinking that the members of Thinknet are how the Ark came to exist in the first place.
• Heel–Face Turn: Realizes that his plan to make a paradise is a selfish one, considering he was only in it to begin with to revive Akane. Though unable to fight due to Bell stealing the Eden Driver beforehand, he still manages to break into the master controls for his nanomachines and destroy them, undoing the damage caused by them.
• Hoist by His Own Petard: Although it was a key part in his plans, S creating the Hellrising Hopper Progrisekey and it being taken before he could use it gave Aruto the means to defeat him.
• Nanomachines: He's a living conglomerate of this, capable of healing any damage inflicted to him at an incredibly fast rate. It also means that MetalCluster's own nanomachine swarm actually makes the weaker form vastly more efficient against Eden than Zero-Two.
• One Degree of Separation: S and his fiancée Akane were present during the Daybreak Incident i.e. the event that shaped Aruto's life, having been developing nanomachines aided by artificial intelligence. And like Aruto, the Daybreak Incident shaped S' future as well.
• One-Letter Name: His name is literally just the letter "S". Subverted, as "S" is what he's known as by his companions. His real name is Rihito Isshiki.
• Restart the World: What he intends to do, as he states to As when she gives him his Zetsumerisekey and Driver.
  "I will destroy the current world...then I will create a paradise on earth."
• Well-Intentioned Extremist: Subverted. S is still an Anti-Villain, but his goal is to create a paradise for his fiancée rather than for the world as a whole.
• You Have Outlived Your Usefulness: Tries to pull this on Thinknet once his plan to create paradise reaches fruition. It doesn't pan out.

Tropes exclusive to him as Kamen Rider Eden

Progrise! Ark! Imagine! Ideal! Illusion! Eden the Kamen Rider!

The creator who charges forward, believing in paradise.

• Body Horror: Like Ark-Zero, Kamen Rider Eden isn't a suit, per se. It's the result of S merging with the Eden Lost Model, causing the armor to emerge from his body while blood-like fluid bursts all around him.
• Evil Counterpart:
  • To MetsubouJinrai.net post-Heel–Face Turn. Half of their members use Progrisekeys to transform while the other half use Zetsumerisekeys, all of which are based off animals. Although Eden also uses a Zetsumerisekey, his is based off of humanity.
  • Technology wise, the Eden Driver is of the same make as its predecessor, the Zetsumetsu Driver as it is a modified variant of the Zero-One Driver, made using Ark-based technology.
• Evil Is Visceral: Has blood vessels as a main motif and ejects large amounts of a red substance resembling human blood when transforming and using finishers.
• Finishing Move:
  • Eden Driver:
    • Eden Impact: Eden lets a single drop of his nanomachines fall from his fingers. When it hits the floor, the surrounding area is flooded by the nanomachines, appearing like a pool of blood. Large spikes then emerge and follow the opponent's position. Once the enemy is trapped between spikes, they merge to form a dome that imprisons them. The dome enlarges before Eden closes his fist, causing it to quickly implode and leave behind a spray of the nanomachines in their liquid state.
  • Thousand Jacker:
    • Thousand Break (Hellrise): Eden charges the Thousand Jacker with purple and red energy before pointing it upward, creating a pillar of light that extends miles into the sky and is surrounded by rings of red energy and spiraling red lightning. With the pillar of light anchored to the tip of the Thousand Jacker, Eden draws a circle in the air with the weapon, creating two rings of distortion above him. Finally, Eden stabs the Thousand Jacker into the ground, causing dark purple energy to travel back down the pillar of light. When the energy reaches the base of the pillar, it results in an explosion that sends out massive shockwaves of purple energy which destroy the surrounding area.
• Healing Factor: Due to S being a conglomerate of nanomachines, any damage he receives is repaired at an incredibly fast rate. The only thing capable of overcoming this is Aruto in Hellrising Hopper form, which inflicts damage faster than Eden could repair himself. S even weaponizes this at one point. When he's losing to Metal Cluster Hopper who's own nanomachines are eating away at his own he simply turns the Thousand Jacker to maximum power and levels the entire area, bringing the whole stadium down on top of them, killing his followers in the area and forcing Aruto to use all of his power to shield himself and just barely take the hit. S himself is blown to bits but regenerates like usual, casually walking off while Aruto is totally exhausted and unable to follow him.
• Humans Are the Real Monsters: Seemingly invoked, as unlike the other Kamen Riders, his Ride Model is based off of a human. More so when the item he uses to transform into his Rider form is a Zetsumerisekey instead of a Progrisekey.
• Logical Weakness: Zero-One's MetalCluster Hopper form served as a Kryptonite Factor towards Eden.
• Meaningful Name: "Eden" is the name of paradise created by God for Adam and Eve in the Old Testament. Fitting, given his declaration to create a paradise of his own after he destroys the current order of the world.
• Mythology Gag: A small one, but his transformation announcement's last line, "Eden the Kamen Rider!" before the speech-to-text jingle harkens back to the transformation announcements of Kamen Riders Brain and Heart.
• Purple Is Powerful: In the dark, the suit appears purple. Otherwise, it's a case of Red and Black and Evil All Over.
• Red and Black and Evil All Over: Kamen Rider Eden's suit is almost entirely black with a few hints of red, and is by far one of the most dangerous opponents Aruto has faced since the Ark.
• Red Eyes, Take Warning: Has red eyes on the helmet and is one of the most dangerous "Ark Riders" Aruto's faced since Kamen Rider Ark-Zero.
• Weak, but Skilled: Eden's stats are actually lower than MetalCluster Hopper and Aruto has access to stronger forms such as Realizing Hopper and Zero-Two. Despite the difference in strength, Eden makes up for it by way of ability and a potent Healing Factor.

Behru/Kamen Rider Abaddon (unmarked spoilers)

Behru/Kamen Rider Abaddon/Kamen Rider Lucifer

Portrayed by: Seiji Fukushi (live), Yuji Nakata (suit)

The de-facto leader of Abaddon's users, Behru consequently serves as The Dragon to S. After learning the truth about S's agenda, Behru steals the Eden Driver and activates a hidden function in the Driver Unit, upgrading Eden's form to the sinister Lucifer.

Tropes that apply to him in general

Enforcer of Thinknet

• All-Encompassing Mantle: Wears a large red cloak in his civilian attire.
• Anti-Villain: He's mainly just upset that S really centered his plans all around one person, and wants to expand his visions to cover the entire world. The main issue with this is not only the destruction said plans are already causing, but also the fact that for numerous good reasons, S has every right to turn away him and his 100 million goons.
• Big Bad: In the climax, Behru usurps S and attempts to go forward with his original plan to destroy the world and forcibly digitize everyone into the virtual reality.
• Cybernetics Eat Your Soul: Undertones of this serve as a recurring theme for both him and Lucifer. Behru's hijacking of S's plans causes them to regress to that of an amoral Lotus-Eater Machine, he himself is a digital avatar projecting itself into the real world, and the transformation announcement for Lucifer is much more mechanical in nature compared to Eden's.
• Digital Avatar: His civilian form as Abaddon is really an avatar projecting into the real world. Unlike Moore and Buga, though, he's still himself in the real world, just with glasses and his hair combed back.
• The Dragon: The de-facto leader of Abaddon's users, and is thus second-in-command to S.
• Dragon Ascendant: Takes control of S's plans for himself after he experiences a moment of clarity.
• Final Boss: After ousting S and becoming Lucifer, Behru serves as the final opponent of the film.
• Irony: The mental health care employee turns out to be the most unhinged of Thinknet's members.
• Meaningful Name: Named after Belial, a demonic figure in the Hebrew Bible.
• Near-Villain Victory: The doomsday clock was milliseconds away from hitting from zero by the time Zero-One and Zero-Two defeated him.
• The Starscream: Betrays S upon learning that he just wanted to be with his fiancée again.
• Token Good Teammate: Downplayed, but he seems to genuinely believe in Thinknet's Restart the World plan and isn't shown to be sadistic like the other elite Abaddons, nor does he have an understandable but self-serving motive like S does. He just wants to make a paradise.
• Xanatos Speed Chess: He immediately deduces something is up when S disappears and moves to counter S's true goal, emerging right after Aruto has defeated him to take the Eden Driver.

Tropes exclusive to him as his custom Kamen Rider Abaddon model

• Color-Coded for Your Convenience: As with the other elite Abaddons, Behru's Rider form has a specially colored shoulder pad.
• Elite Mook: Despite having his own customizations, it does little to change the fact that Behru is still using a mass-produced Rider troop for his powers.
• The Leader: To the Thinknet/Abaddon users.
• Red Is Violent: He's the team leader of a group of villains and has a red shoulder pad.

Tropes exclusive to him as Kamen Rider Lucifer

Progrise!

The creator who charges forward, believing in paradise.

Over the Eden!

• Can't Catch Up: Despite being more powerful than Eden as Lucifer, Behru still lags behind and is completely unable to make a dent in Zero-One Realizing Hopper and Zero-Two, with his one use of the Paradise Impact instantly parried by them and all of the shots fired from the modified Thousandjacker countered or dodged. Part of this is unlike Eden, Lucifer is not a nanite swarm and thus lacks the Healing Factor and durability that let Eden punch outside of his weight class in the first place.
• Cheshire Cat Grin: One serves as Lucifer's mouthpiece.
• Dem Bones: Lucifer purges some of Eden's armor and turns the accents white, giving it a skeletal appearance. Its Lost Model is also a giant skeleton.
• Eaten Alive: Lucifer's Lost Model is a giant skeleton that devours Behru to form the undersuit.
• Evil Counterpart: Just like Eden and Horobi Ark-Scorpion before him, Lucifer is a false form of Zero-One accessed by mounting an Ark-based driver unit onto the Zero-One Driver.
• Evil Is Visceral: Despite being based on bones rather than flesh, Lucifer still has traits of this, as its Transformation Sequence has the armor plates manifest through large spiky masses resembling growths from bone cancer.
• Eye Lights Out: Lucifer's eyepieces are black and hollow, compared to Eden's fluorescent red.
• Finishing Move:
  • Eden Driver:
    • Paradise Impact: Lucifer attempts to roundhouse-kick his opponents mid-air. Key word: attempts. He isn't actually able to connect it with Zero-One and Zero-Two beating the tar out of him.
  • Thousand Jacker:
    • Thousand Break (Hellrise): Lucifer charges the Thousand Jacker with magenta and cyan energy before thrusting it forward, creating a cyan energy drill surrounded by purple energy and lightning.
• Light Is Not Good: In contrast to Eden, Lucifer has white accents on its armor.
• Mythology Gag: Him accessing a new form of Eden by activating a hidden function on a derivative of the protagonist's driver brings to mind Evol Blackhole, even saying a similar line when activated ("Over the Eden.")
• Power Up Let Down: Lucifer is a power up over Eden...but he's also a tangible being rather than a swarm of nanites. As such, he lacks Eden's Healing Factor, which was part of what allowed him to punch so far outside of his weight class to begin with. As such, Lucifer fairs far worse than Eden.

Thinknet/Kamen Rider Abaddon

Mua, Lugo, Buga, and the Thinknet/Kamen Rider Abaddon

Mua Portrayed by: Mei Hata/Rin Yamada (live), Yume Sakanashi (suit)
Luga Portrayed by: Yu Koyama (live), Kazuya Okada (suit)
Buga Portrayed by: Hirooki Gooto/Taro Yabe (live), Takumi Komori, Various (suit)

Mua

Lugo

Buga

"Thinknet Rise! Crowding Hopper! An attack method using various group tactics."

— Abaddoriser transformation announcement

Rider troops serving S created by inserting the Crowding Hopper Progrisekey into yellow Shotrisers and Slashrisers called Abaddorisers. The named users have access to stronger versions of the model with colored markings.

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• Abusive Parent: Mua's real-life self is seen neglecting her crying baby to log on to Thinknet.
• Apocalypse Cult: They seek to bring about the end of the world so they can "remake" it by forcibly downloading everyone into a virtual world.
• The Brute: Buga, the largest and most muscular member of the team and prefers physical force.
• Color-Coded for Your Convenience: The high-ranking Abaddons all have uniquely colored shoulder pads.
• Digital Avatar: Many of Thinknet's members appear via avatars:
  • Mua appears as a gothic-lolita girl. In actuality, she's an overweight housewife.
  • Buga is The Brute as Abaddon, but is really a pale-looking frail man.
• Electronic Music: They use this as one of their motifs through the sounds of their Abaddorisers, symbolizing their digitized nature. Subverted when using finishers, which instead play rock solos once fired off.
• Evil Knockoff: While As's own Kamen Riders draw power from false Zero-One Driver upgrades, Abaddon instead draws upon A.I.M.S. and ZAIA's technology to create washed-out armored knockoffs of the hypothetical Shotriser Rising Hopper suit.
• Finishing Move: Whereas the A.I.M.S. Riders have the Blast/Blast Fever finishers and Jin has the Rain/Rain Rush finishers, Abaddon instead substitutes the Crowding Energy/Energy Fall and Crowding Burst/Burst Cannon on the Slash and Shot Abaddorisers respectively.
• Glass Cannon: They can obviously pack a punch when in a capable user's hands, since they are actual Kamen Riders. The problem is that the suits are so fragile that simply calling down a Rider Model is enough to instantly kill them.
• Guys Smash, Girls Shoot: The only female member of the high command, Mua, uses a Shot Abaddoriser, while the other members mostly use Slash Abaddorisers.
• Humans Are the Real Monsters: All of them are Not Brainwashed humans who willingly joined a cult to attack innocents and bring about the end of the world. This is exactly why S has no intention of letting them survive his Armageddon and is instead using their terrorist attacks to preserve the victims in his digital world. He later calls them out on this, saying that malicious and evil humans like them are the exact sort that made the Ark hate humanity.
• Irony:
  • Lugo is the only member of the high command who doesn't change his appearance in Thinknet even slightly as an Abaddon user (even Behru loses his glasses and lets down his hair), despite his character archetype being associated the most with the disconnect between virtual avatars and reality.
  • The Crowding Hopper key they use has the text-to-speech announcement of "An attack method using various group tactics". In practice, they don't really have anything resembling coordinated tactics, acting more like an angry mob.
• Meaningful Name: Abaddon, in the Book of Revelation, is the angel of the abyss and the king of locusts, tying in with S's motif of the Garden of Eden and the apocalypse.
• Million Mook March: They have 100 million members worldwide, and no shortage of cultists in white hoods to march around.
• Mook Lieutenant: The four high-ranking Abaddons, who lead the regular Abaddon troops into battle.
• Mythology Gag: The design of the Abaddons was based partially off the Shocker Riders.
• Red Eyes, Take Warning: All of them have bright red irises, and are cooperating with S's goals.
• The Smurfette Principle: Mua, an Elegant Gothic Lolita and the only known female in Thinknet's leadership.
• Squashed Flat: As a Funny Background Event, a few of them are actually killed instantly in this manner when the Realizing Hopper and Zero-Two Rider Models crush them after arriving through destroying the roof.
• Unskilled, but Strong: The Abbadon suit's stats are on-par with the main Riders' base forms; the normal variant boasts higher punching power and running speed than Rising Hopper, while the commander variant has higher maximum jumping height and kicking power than Sting Scorpion. However, Thinknet is mainly comprised of normal humans with no combat experience, so in practice the only advantage the Abaddon troops has is their Resurrective Immortality due to being avatars, and even trained AIMS soldiers can suppress them without transforming.
• Unwitting Pawn: S' followers go through with his plan because they believe that they're creating a new Paradise on Earth, which is technically correct. S' true plan is to create a virtual paradise free of suffering for his fiancée and the victims of their attack, who are actually having their consciousnesses uploaded into his new world rather than being killed. He would never allow a group as malicious as Thinknet near his fiancée's new utopia and fully intends to leave them behind to die in the broken remains of the real world.
• Visual Pun: One that's Lost in Translation. In Japanese internet slang, net users that participate in a Flame War are called net inago, or net locusts, after their tendency to swarm social media posts. The Abaddons are locust-themed avatars controlled by net users to riot in real life, making them literal net locusts.
• White and Red and Eerie All Over: The Thinknet members all wear white uniforms with red highlights and accessories.
• Zerg Rush: Being based on locusts, they are all but intended to be weaker Mooks running on Rider powers to overrun any opposition.

Akane Tono

Akane Tono

Portrayed by: Hirona Yamazaki

A researcher in the past who developed medical nanomachines, who also happens to be S's fiancée. Aruto tries to find out the truth about the incident through her.

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• Older Than They Look: She's 43 years old But looks around 30 which was the age she died, and spent the next 13 years as an unaging virtual avatar.
• Posthumous Character: Her physical body long since perished in the Daybreak Incident. Her consciousness, however, resides in a virtual space thanks to Rihito.
• Too Good for This Sinful Earth: Akane was in charge of research involving artificial intelligence-equipped Nanomachines for pure medical purposes. Rihito tried to save her life using her research, but the nanomachines he injected into her body were hijacked by the Ark, killing her physical body.

Makio Nodachi

Makio Nodachi

Portrayed by: Akira 100%

A high-ranking ZAIA managing director, Gai and Fukuzoe accused him of having connections to S and leaking ZAIA Enterprise's technology to them and was interrogated in the Hiden laboratory.

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• Actor Allusion: His catchphrase and him going naked are both a reference to his actor, comedian Akira 100% who often uses nude poses for his comedy acts.
• Catchphrase: "100 percent!" Gai, whose catchphrase is "1000 percent", is less than amused.
• Minor Major Character: He's only in the film for a few scenes, but him giving Thinknet the Zaiaspec blueprints was one of the main reasons they were able to pull off as much as they did.
• The Mole: Works for ZAIA while secretly feeding data to Thinknet.
• Naked People Are Funny: He eventually was stripped of all his clothes during his interrogation.

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Characters from Zero-One Others

Lyon Arkland/Kamen Rider Zaia

Lyon Arkland/Kamen Rider Zaia

Portrayed by: Jai West (live), Yuji Nakata (suit)

The CEO of ZAIA Enterprise's American branch and the Big Bad of Zero-One Others: Kamen Rider Metsuboujinrai. He kidnaps Jin to Take Over the World using the technology behind his revival. He transforms into Kamen Rider Zaia.

Tropes that apply to him in general

CEO of ZAIA Enterprise USA

• Admiring the Abomination: He reacts to Kamen Rider Metsuboujinrai's debut with utter glee and excitement, shouting throughout their first fight (in English) how amazing it is.
• Affably Evil: Say what you will about Lyon being a war profiteer, he's a pretty friendly and jovial guy to be around.
• Badass in a Nice Suit: Wears a fully-symmetrical pinstripe suit in his civilian attire, in contrast to his kidnappee Jin, whose suit is only halfway pinstriped.
• The Bad Guy Wins: Gets the last laugh in the film despite being brutally murdered by MetsubouJinrai as the Mass Brain key Mind Rapes Metsuboujinrai's users and makes them obliterate their original selves. On the other hand, while he does create the threat in KR Metsuboujinrai, his death means the Defense Force is free to look into alternative methods of dealing with said threat other than the Solds, meaning the rest of his plan falters.
  • He gets the last laugh in Vulcan & Valkyrie too. Two of his Solds play a crucial role in destroying Metsuboujinrai by giving Isamu and Yua their new forms. Since Metsuboujinrai's death drags down the four Metsuboujinrai.net members with it, in a way Lyon did defeat Metsuboujinrai.net with his Solds. He also indirectly caused Fuwa's ambigious fate, as the rider was the reason he needed to use a Deadly Upgrade, fulfilling Lyon's goal of bringing down Aruto by killing his friends.
• Bad Guys Do the Dirty Work: While As's Stupid Evil tendencies made her an ineffective villain in the long term, Lyon undoubtedly did the world a favor by killing her.
• Batman Gambit: Kidnapped Jin because he knew the other MetsubouJinrai.net members would try to rescue him, and because he predicted they would use the MassBrain key to become Kamen Rider Metsuboujinrai.
• Be Careful What You Wish For: Lyon's goal for kidnapping Jin was to force MetsubouJinrai.net into becoming "villains" so as to give him an excuse to mass-produce Solds and dominate the military market. While he does succeed in turning the group antagonistic in the form of Kamen Rider MetsubouJinrai, it ultimately culminates in his death and his plans meaningless since the Department of Defence never wanted to use Solds anyway.
• Beware the Silly Ones: Compared to the other villains of Zero-One, Lyon is an upbeat enemy having fun openly taunting and mocking his opponents. This is the same man that demolishes The Ark's Mouth of Sauron and creates a scarier Mechanical Abomination in less than twenty minutes of real time.
• Big Bad: Of Zero-One Others. He masterminded the creation of the Solds and brought about Kamen Rider Metsuboujinrai in the end.
• Blood Knight: He greatly enjoys fighting, and when he sees MetsubouJinrai.net use the Massbrain Zetsumerisekey and their subsequent transformation into Kamen Rider MetsubouJinrai, he relishes his fight with them, even laughing while being on the receiving end of a Curb-Stomp Battle.
• But Not Too Foreign: An international CEO with a Western name, portrayed by a Japanese-Canadian actor.
• The Chessmaster: Lyon is an extremely skilled manipulator. He sets up Metsuboujinrai.net as a threat for his Solds to fight while using AIMS's ties with them to discredit them as an organization, paving way for the Solds to be introduced into the military.
• Combat Sadomasochist: Enjoys dishing out dirt as much as he does receiving it, as seen with his first bout with KR Metsuboujinrai. It's subverted in his final fight with Metsuboujinrai, where its clear from his constant blocking of Metsuboujinrai's attack, even to the extent of putting one of the Solds in its path in a vain attempt for a Human Shield, that he's not enjoying the fight at all.
• Cool Shades: Walks into battling wearing a pair of cool sunglasses, which he takes off when transforming into his Rider form.
• Corporate-Sponsored Superhero: His Rider form is named after the company he runs.
• Corrupt Corporate Executive: The CEO of ZAIA's American division and an Kamen Rider hellbent on raising a horde of Super Soldiers like Jin.
• Deconstruction: Lyon is basically a one-man deconstructer of the entire plot and setting of Zero-One. Most of the plot of his film is him picking apart the holes in the logic of all the other characters and exploiting loose ends they failed to tie up.
  • He deconstructs As's Stupid Evil tendencies and plan to spread more malice by pointing out that her plans will always falter because hate is an emotion that quickly fizzles out, whereas those with deeply held principles tend to be much more motivated. Right before snatching her drive to use for his own plan and having her shot in the head.
  • He deconstructs how Easily Forgiven the antagonists in Zero-One were by using the fact that AIMS let off MetsubouJinrai.net and didn't punish them at all (even though one of the members freely committed murder) to discredit them and turn public opinion against them.
• Didn't See That Coming: Like his golden counterpart, his plan to promote his Solds by having them fight Metsuboujinrai.net ends up immediately coming down once Metsuboujinrai severs the Solds' link to the Massbrain A.I., leaving him to fight a vastly-overpowered opponent on his own.
• Eagleland: He's an American CEO, with a bombastic personality and thick accent to emphasize this.
• Evil Cannot Comprehend Good: Soundly Averted. Unlike As, he has a much more nuanced understanding of concepts like justice and the strength people can draw from positive emotions and their hearts. However, he fully intends for his company to profit from this by pitting groups with different ideals of justice against one another to produce endless conflict.
  "Justice never leads the heart astray. And when two rival ideologies of justice collide... It will bring about an endless war!"
• Evil Counterpart:
  • To Williamson Yotagaki. Both are vaguely-foreign members of ZAIA's leadership and are using HumaGears for covert operations. However, while Williamson generally has the best interests of humans at heart, Lyon only cares about himself and will cooperate with the enemy to enact his plans, spurred by his War for Fun and Profit desires.
  • He is also one to Korenosuke Hiden, the founder of Hiden Intelligence. While Hiden believed Humagears are intended to make people's lives brighter and easier, Arkland sees them as nothing but a tool of war and destruction, as he wants to make a profit to conquer the world.
• Eviler than Thou: Effortlessly asserts himself as superior to Gai (although he turned good) and As, though ironically he's less evil than either of them. He's just more effective.
• Evil Is Not a Toy: Crosses over with Gone Horribly Right. Lyon's antagonism towards MetsubouJinrai.net so as to create an excuse for him to mass-produce Solds and dominate the military market ultimately ends up screwing him over. Namely in creating a Kamen Rider hellbent on destroying both MetsubouJinrai.net and ZAIA and said Rider killing him.
• Evil Laugh: Lets out a hearty laugh whenever he's having fun.
• Evil Versus Evil: Downplayed. One of his first acts upon directly taking control of ZAIA Japan is to knock Gai down a peg.
• Face Death with Dignity: When he's beaten by Metsuboujinrai, he simply lets out a triumphant "ZAIA forever!" before falling over dead.
• Fantastic Racism: He believes that the best role for Humagears are "soldiers" and plans to mass-produce and sell them, essentially putting him around Yua's initial view of Humagears as "tools used by humanity". Although Lyon at least takes steps to ensure his Humagears can't develop sentience.
• Foil:
  • To Gai Amatsu. Gai sets up schemes that falter due to his Stupid Evil tendencies, Lyon actually is a competent manipulator who keeps everyone dancing to his tune. Gai sought to scrap all Humagears, while Lyon recognizes their utility and seeks to sell his own versions of them.
  • To As as well. As loves malice, Lyon rejects malice and views justice as superior. As has little personality beyond wanting to spread malice, Lyon is full of personality and unabashed flair.
• For Great Justice: Exploiting this trope is his main business model. See above.
• Foreshadowing: His views about malice being an obsolete concept would herald the advent of Zein, a supposedly Benevolent A.I. that seeks to expunge malice, when in actuality it plans to Kill All Humans to make that goal possible.
• Gratuitous English: Makes use of some English phrases and says his lines with a thick American accent, highlighting the fact that he operates internationally.
• Greed: Like Gai, he isn't looking to take over or destroy the world, just take over the military market with his Solds and make a profit off them.
• Happy Ending Override: With little more than the MassBrain key and his wits, Lyon singlehandedly undid everything Aruto and his allies had strived for.
• Hidden Depths: Despite his status as MetsubouJinrai's Big Bad, he demonstrates a very good understanding of why people will constantly oppose evil, subverting Evil Cannot Comprehend Good. Unfortunately, this is also his business model.
• I Can Rule Alone: Although As helps him further his ambitions, he makes it very clear to her that, as far as he is concerned, he has no intention of joining her or falling sway to the Ark's own malevolent nature, even going so far as to destroy her current body.
• Large Ham: Every line he utters is laced with confidence and charisma.
• Manipulative Bastard: He starts by kidnapping Jin to provoke the rest of Metsuboujinrai.net to storm ZAIA Enterprise JAPAN to rescue him, then crashes a meeting by A.I.M.S. to not only spin the attempt to the public as said group returning to terrorism, but also to discredit A.I.M.S. by revealing that they had a member working for them. Once Metsuboujinrai publicly declares their intent to attack ZAIA to free the Solds, he also uses that opportunity to further dismiss A.I.M.S. and build support for ZAIA and the Solds. It's later revealed that he was also forcing the Defense Force to use Solds over A.I.M.S. by leveraging Japan's relationship with the USA against them.
• Named After Somebody Famous: Inverted in-universe. The Ark was named after him.
• Not Brainwashed: At first, it seems as if Lyon is like those who have fallen to As' manipulations and is just another vessel for the Ark's malice. While As did help him, Lyon has total control of himself and of his situation. He even rejects the notion of using an Ark-based Driver and uses the Thousandriver instead. This can also be seen during his Transformation Sequence as the signature eye of the Ark is seen before the headpiece and visor slam down on it.
• Obviously Evil: His surname's Arkland, so there's not much else to be expected. Surprisingly, however, he is not one of those who has fallen sway to As' manipulations and uses the Thousandriver instead of an Ark-based one. In case of humorous irony, the Ark is actually named after him.
• Posthumous Villain Victory: Lyon dies without being able to mass-produce the Solds, but he does manage to wipe out 2/3rds of the season's entire ensemble by proxy of Kamen Rider Metsubojinrai's rampage during Vulcan & Valkyrie, turning Humans against Humagears once more in the process.
• "The Reason You Suck" Speech: He tells As that, for all her efforts to restore the Ark or create a worthy successor, she will always fail. Why? Because there will always be someone with justice, strength and righteousness to oppose it.
• Red and Black and Evil All Over: His outfit consists of a red formal shirt under a black office suit, and he's even more evil than Thouser. This carries over to Kamen Rider Zaia, whose suit is all black with red eyes. Even the dinosaur-based Zetsumerisekeys that he uses to transform are mainly red.
• Replacement Flat Character: A Big Bad who holds a high position in ZAIA Enterprise whose someway is connected to the creation of the Ark, and his plans involve manufacturing a conflict involving Humagears in order to make profit selling weapons, who also uses the Thousandriver to transform into a Kamen Rider? He's essentially Gai as he was originally introduced, though he's a lot more friendly and less needlessly evil than Gai was. Even his death basically comes from being beaten up by someone he gave a power-up to as part of their plans, like how Gai's plans with Zero-One MetalCluster Hopper and Vulcan Rampage ended for him.
• Sanity Has Advantages: Lyon is one of the few villains in Zero-One to not be dysfunctional, sociopathic or Ax-Crazy. The result is him winning for most of the film and steamrolling just about everything the heroes accomplished in the series by the end of the duology.
• Small Role, Big Impact: A foreign CEO nobody in-show has ever heard of is responsible for the creation of Kamen Rider Metsubojinrai, which wipes out most of the major characters and un-does most of the human/humagear relations the heroes spent all series striving to improve in the process.
• Unperson: Both meta and in-universe. Vulcan & Valkyrie seems to forget about him in almost every way; the man neither named nor referenced by anyone whatsoever throughout the film.^note Solds 9 and 20 come close during their introductory scene but blame ZAIA for "using them like tools" without elaborating. Even the Flashback of Kamen Rider Metsubojinrai's Finishing Move only shows Kamen Rider ZAIA and not the man under the armor. His mugshot plastered on a background billboard is the only hint he was ever around at all. This has the side-effect of overshadowing KR Metsubojinrai's status as the side-effect of his tampering; emphasis put on the gestalt's Genghis Gambit motive instead.
• Unwitting Instigator of Doom: He appointed Gai to his position as president of ZAIA Japan, giving him access to the Ark and allowing him to corrupt it.
• Villain Has a Point:
  • Even though it doesn't make him a good guy, when confronted by an outraged As about his end goal, Lyon correctly points out that, despite its great power, there are limits to The Power of Hate, proving why As will never be able to fully revive the Ark no matter how many times she tries. He then goes on to remind her of the Ark's previous successors - Aruto, Horobi, and S - having been able to overcome its corruptive influence with the strength of their hearts, coming to the logical conclusion that positive emotions like justice are more reliable in the long run.
  • His vision of using Humagears as soldiers isn't necessarily a bad idea either. Having robot soldiers fight battles instead of human ones certainly help minimize the human cost of war and the Mass-Brain system keeps his Solds from developing sentience, averting any ethical quandaries that may come with it.
  • During AIMS's press conference, Lyon correctly points out that AIMS having a MetsubouJinrai.net member on their team may skew their understanding of the situation, and that even if freed Humagears can still be influenced to harm humans, as even Kamen Rider Zero-One itself showed. He also implicitly alludes to the fact that Fuwa and Yaiba chose to ally with a murderous terrorist instead of punishing him. No wonder he was able to get the public on his side.
• Villain with Good Publicity: Lyon has an excellent public image, in no small part due to his charisma and oratory abilities. When he crashes the AIMS press conference, he's able to deconstruct everything Yua is saying and get the public on his side by painting ZAIA as the victims, all while discrediting AIMS and Metsuboujinrai.net in the process.
• Villainous Legacy: He dies, but not before bringing about the villain of the next film.
• Virtuous Character Copy: He's no hero, but he has many more admirable qualities than Gai Amatsu.
  • Gai was an arrogant, smug control freak for most of Zero-One. Lyon, if nothing else, acts cordial with everyone he speaks to and refrains from the Kick the Dog behavior Gai engaged in.
  • Gai was ultimately exposed as a hypocrite who didn't believe the pro-human rhetoric he espoused and only exploited it for profit. Lyon holds genuine pro-human viewpoints and part of the motive behind his plan is to have his unfeeling Solds replace human soldiers, minimizing the human cost of war.
  • Gai corrupted the Ark with malice and exploited it and MetsubouJinrai.net for his own ends. Lyon outright rejects As's influence and has her killed, finding her malice to be too Stupid Evil to be effective and favoring justice instead.
• War for Fun and Profit: Intends to control the international military market by selling Solds to counter the threat of Metsuboujinrai.net he plans to reintroduce.

Tropes exclusive to him as Kamen Rider Zaia

Perfectrise!
When the five weapons cross, the jet-black soldier, Zaia, is born!
I am the president.

• Dark Is Evil: Essentially a black-colored Thouser and wants to rule over humanity.
• Dual Wield: Uses two dinosaur-based ZetsumeriseKeys; one based on a Triceratops (where Thouser’s Amazing Caucasus key would go) and one based on a Carnotaurus (where Awaking Arsino would go).
• Evil Counterpart: Palette Swap aside, Zaia is essentially what Thouser would be if he was actually dead set on conquering the world through the power of artificial intelligence.
• Finishing Move:
  • C.E.O. Destruction: Zaia idly kicks his targets once, generating red gems after impact. This alone is powerful enough to block Jin and Horobi's finishers and deal enough damage to cancel their transformations.
• Palette Swap: Aside from the undersuit, which is retooled from Ark-Zero's own suit, Zaia is essentially a black-colored Thouser with red eyes.
• Power Copying: During his debut fight, Zaia is able to directly drain energy from other Riders though contact, augmenting his own attacks while weakening them: He strikes with purple energy when he drains Horobi, and then stikes with fire once he drains Jin Burning Falcon immediately afterward.
• Red Eyes, Take Warning: The eyes of Zaia's helmet are red, and being a Kamen Rider, he's dangerous in his own right. Additionally, his Transformation Sequence reveals the signature large red eye of all Ark Riders in his helmet before the visor slams down on top of it.
• Superior Successor: Recolored suit aside Zaia is shown to be more advanced and powerful than Thouser was. He can drain and use other Rider's data by touch alone without needing to use the Thousand Jacker to do and easily overpowers Burning Falcon and Sting Scorpion, both of which were shown to be on par with if not superior to Thouser.

Kamen Rider MetsubouJinrai

Horobi/Naki/Jin/Ikazuchi

Portrayed by: Blaise & Maynard Plant (voice), Yuya Nawata (suit)

Progrise! Connection! (Connection!) Complete! MetsubouJinrai!
Quartet with unified will!

"We will destroy you all."

The eponymous protagonist of Kamen Rider MetsubouJinrai. Rather than having a singular user, MetsubouJinrai is comprised of all four members acting in unison.

For tropes about the users that make up the Rider, see Horobi, Naki, Jin, and Ikazuchi's folders.

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• All for Nothing: Assuming Isamu's interpretation of the Rider's actions as a Genghis Gambit is valid, its attempt to unite the races through a common enemy is nothing short of a bust. Its rampage ends up plummeting relations between man and machine to all-time lows and cementing the Minister of Defense as an Anti-A.I. activist. Worse still, it couldn't have brought true peace anyway - The Genms specials reveal that both the original Ark and impending Knight Templar A.I. Zein were/are running amok - dooming its efforts from the start.
• A.I. Is a Crapshoot: The second transformation into KR Metsubojinrai doesn't just fuse the members of Metsubojinrai, it outright absorbs them. What results is a Mechanical Abomination driven by the sole goal of eliminating everyone pertinent. It's so dedicated to this one goal that to say it even has a will of its own is being generous.
• All Your Powers Combined: This is a given, since the Rider is made possible by fusing the powers of Kamen Riders Horobi, Naki, Jin and Ikazuchi together, and it fights using all of their signature weapons.
• And I Must Scream: Despite initial impressions, its users did not die when it went haywire. They're trapped in the delusional construct, with no hope of escape and in constant pain. And they scream, alright. The brief moments of lucidity for the Rider consist solely of them shrieking and sobbing in terror and grief.
• The Bad Guy Wins: It destroyed ZAIA Japan, it destroyed Metsuboujinrai.net and it metaphorically destroyed A.I.M.S. by crushing their Rider Systems.
• The Berserker: After transforming, Metsuboujinrai's users have their minds melted into a single feral mass obsessed with eliminating every side of conflict and obliterate both their original bodies and Lyon himself.
• Character Catchphrase: "[Enemy Faction] will be extinct."
• Create Your Own Villain: The lack of control in MetsubouJinrai combined with its savior complex and intense hatred of both ZAIA and MetsubouJinrai.net turns it into another threat to society, despite it being meant to save humanity instead.
• Curb-Stomp Battle: As is the case when a Kamen Rider makes their debut, MetsubouJinrai steamrolls through the Solds with incredible ease and makes very quick work of Lyon. The streak continues in Vulcan and Valkyrie, where it tosses the titular Riders around like ragdolls. It takes Isamu transitioning to a new Rider System to finally end said streak.
• Dark Is Not Evil: Of all the modified Zero-One Driver users, MetsubouJinrai is the only one that is treated as a false form of Zero-Two, rather than Zero-One itself. However, it is also the only one used for good, rather than self-centered goals or outright villainy. At least until it devours the personalities of its users.
• Dark Messiah: In Vulcan & Valkyrie, the Rider's antagonism towards A.I.M.S. convinces the Solds that it's fighting for Humagear supremacy and most of them rebel against Humanity in its name, re-invigorating the racial tensions everyone involved was fighting to stop. Thankfully, Fuwa and Sold 9 manage to talk them down.
• Designated Villain: Invoked by Lyon, as he designed Kamen Rider MetsubouJinrai as a major villain that his Solds will take down to incentivize using Humagears as tools of war.
• Destructive Savior: It thinks that it will save the world by destroying both MetsubouJinrai and ZAIA, and starts by killing its users and blowing the latter's headquarters to bits. Of course, this doesn't actually help one bit.
• Even Evil Has Standards: During its invasion of A.I.M.S. Headquarters in Vulcan & Valkyrie, it ignores the human troopers entirely. This leads Yaiba to believe there's something left of the originals inside it.
• The Extremist Was Right: In the end, while it's plan isn't without hiccups, it did effectively remove any threats to peace by destroying both MetsubouJinrai.net and ZAIA.
• Face–Monster Turn: Is a walking one for Metsubojinrai at-large. While the four made the choice to transform into the Rider a second time to push out the collective mass of enslaved Sold minds from the Key's thrall, they certainly didn't expect the Mass Brain Key to fuse with their data and devolve them into a Knight Templar Mechanical Abomination.
• Fighting from the Inside: Downplayed as the members of Metsubojinrai are Deader than Dead, but there's moments where the screaming mass of collective anguish powering the Rider distracts it.
• Final Boss: It's the last opponent in the saga of Zero-One overall, tying up the last of the loose ends left by the series's No Ending.
• Finishing Move:
  • Massbrain Impact: After draining some of its target's power, MetsubouJinrai socks the opponent with a traditional Rider punch.
  • MetsubouJinrai Impact: MetsubouJinrai jumps up and delivers a traditional Rider kick as different parts of the group's logo appear behind it. It is strong enough to instantly kill Lyon while he was transformed into Zaia. It does the same again, this time against Fuwa using a Deadly Upgrade. Mutual Kill ensues.
• Foil:
  • To Horobi's Ark-Scorpion form. Ark-Scorpion is accessed via the Zetsumetsu Driver and Ark-Scorpion Progrisekey, the former being a jury-rigged variant of the Zero-One Driver. The form is also based off of Ark technology and was used by Horobi while being manipulated by As in a bid to create a new Ark. By contrast, Kamen Rider MetsubouJinrai is accessed through the use of another modified Zero-One Driver, but uses a Zetsumerisekey instead of a Progrisekey. Said form is also used by the members of MetsubouJinrai.net, a group dedicated to the Ark before undergoing a Heel–Face Turn.
  • To Kamen Rider Ragnarok from the StoneBot comic series. Ragnarok is a sentient Fail Safe Failure that stemmed from a natural phenomenon tripping up one of Zea's post-apocalypse protocols that wants to destroy all Kamen Riders and actively defies all aspects of its programming limitations to do so. Metsubojinrai by contrast is a Tragic Monster that Leon Arkland made deliberately to exploit Engineered Heroics that inadvertently fused with the data of its Humagear components into a rogue entity. It's so deeply shackled to the Knight Templar aspect of the Mass Brain Key's programming that calling it "sentient" at all is being generous.
• Fusion Dance: Similar to Rider fusion forms like Cross-ZBuild, Zi-O Trinity, CycloneJokerXtreme, and Climax Form, MetsubouJinrai is made up of four different Riders. Unlike them, however, none of its users are in any sort of control while it is active. In fact, it's heavily implied that transforming has either killed them all, or at least trapped them within the Massbrain A.I..
• Genghis Gambit: Fuwa eventually determines that the reason behind its seemingly random attacks is to give humanity and Humagears a foe to unite against, brokering true peace between them in the process.
• Gone Horribly Right: Twofold. KR Metsubojinrai does fulfill the role of "designated enemy" Lyon wanted it to, but it makes a mockery of of both him and the Solds he wanted to pit it against in the process; reducing Lyon's plans to militarize the conflict into a footnote. KR Metsubojinrai is also a too-successful attempt by the titular organization to co-opt the Mass Brain Key into a liberated weapon. Said Key also absorbs them in the end, attacking their friends and enemies in cruel mockery of what they stand for while what's left of them screams in terror and agony.
• Good Counterpart: To Kamen Rider Eden. Both use modified variants of the Zero-One Driver, as well as Zetsumerisekeys to transform. However, whereas Eden was a villainous Kamen Rider (albeit a Well-Intentioned Extremist and Anti-Villain), MetsubouJinrai is a heroic Kamen Rider. Inverted when the Mass Brain system melts the users' minds, creating an entity that has the exact same Destructive Savior complex as Eden, only with no paradise and no Heel–Face Turn to undo the damage that's been caused.
• Gratuitous English: Speaks only in English, courtesy of Blaise and Maynard Plant from MONKEY MAJIK.
• I Am Legion: Being made from four minds, it refers to itself as "we." This, however, suggests its users have any sort of agency in its decisions while uploaded to it. It's lying.
• Knight Templar: Because of the nature of the Mass Brain key, Metsuboujinrai's users have their minds melted into a single simple-minded entity that only wants the mutual destruction of both sides, believing that it is saving the world.
• Make Way for the New Villains: Kills off Lyon Arkland at the end of the first Zero-One Others, before becoming the villain of the next film.
• Meaningful Name: The Transformation Trinket used is called the Massbrain "Zetsumetsurisekey". No points on guessing what happened after Metsuboujinrai transformed.
• Mechanical Abomination: It's created from four androids who have achieved singularity and bears a passing resemblance to their Rider forms, which likewise operate like those used by the human characters. However, its movements, fighting style, and even its vocalizations are stiff and robotic, and it's completely insane in the kind of way only a "dumb" Artificial Intelligence (like the Ark when it first launched) would be able to perceive its objectives. Both of these traits make it far more intimidating than other Riders on top of its strength, to both friend and foe alike.
• Mind Hive: On account of Fusion Dance. Horobi, Jin, Ikazuchi, and Naki are controlling Kamen Rider MetsubouJinrai simultaneously. This is not a good thing, as the MassBrain key turns them into a single unrecognizable entity hellbent on razing everything in its path, with none of the minds able to escape.
• Mythology Gag: The design of the MetsubouJinrai Driver and the nature of Kamen Rider MetsubouJinrai serve as a clever Call-Back to Kamen Rider Double. Even the MetsubouJinrai Driver when opened resembles the Double Driver.
• Names to Run Away from Really Fast: The Rider is named after the organization MetsubouJinrai.net. If you recall, the kanji translates to something along the lines of "thunderclap of death and destruction." Not exactly someone you want to make an enemy of, especially since they're a four-in-one Kamen Rider.
• Painful Transformation: The drivers shock their users whenever they initiate the transformation. This intense pain continues even while they are transformed, to the point where the only thing they can do after MetsubouJinrai seals off their means of escape is to scream. Constantly.
• Permafusion: He's a fusion of all four members of Metsuboujinrai, as his name implies. In a pretty dark twist to the trope, Metsuboujinrai destroys the bodies of his components, forcing them to remain fused together as him, assuming there's anything left about them within him until the next film has Isamu sacrifice himself in order to destroy the fusion for good.
• Pre-Asskicking One-Liner: Not ten seconds after MetsubouJinrai is created do they state that they are going to destroy the Solds and Lyon. What follows afterwards is a Curb-Stomp Battle.
• Purple Is Powerful: Is almost entirely colored purple, and very capable in combat.
• The Remnant: According to Lyon, it represents what MetsubouJinrai.net used to be - highly destructive terrorists that want to kill all humans - rather than what they are now, and it demonstrates this through its "Kill Everyone" agenda, refusing to give its users a say in the matter.
  • Fuwa comes to see it the same way but for reversed reasons: seeing the Rider as a living Suicide by Cop that wants to be destroyed to broker true peace.
• Replacement Flat Character: It's similar to the pre-Motive Decay Ark, being an implacable AI bent on ending conflict by any means necessary.
• Single-Issue Wonk: Is obsessed with destroying every side of the Human/Humagear conflict and will constantly spell that out.
• Suicide by Cop: Fuwa interprets this Rider's existence as the collective suicide of the contained members to broker true peace between Humans and Humagears.
• Surprisingly Realistic Outcome: While the Rider removed what it saw as violent factions, it didn't actually bring forth peace. In fact, its rampage gets a bunch of people killed, sways people against Humagears yet again and has the Defense Secretary chomping at-the-bit for anti-A.I. legislation by the end of Vulcan & Valkyrie, with an inconclusive speech from Yua being his only opposition.^note Plus, Presidents reveals The Ark is alive and well, so it didn't even remove all threats to peace!
• Suspiciously Similar Substitute: As a rampant AI brought about by the members of MetsubouJinrai.net, it's effectively the Ark without any purported malice.
• Skyward Scream: Its debut film ends with a truly haunting one let out in the voices of its users during a brief moment of lucidity after it destroys their original selves.
• Tragic Monster: The Rider's innate hostility to those it sees as perpetuating prejudice stems from mindless programming rather than malice. It's by no means a "quartet with unified will," being a botched Fusion Dance between the minds of Metsubojinrai and the Mass Brain Key. Fuwa reasons it's deliberately playing the villain to unite the quarrelling factions against it to broker peace, yet by the end of the second film all it's done is generate more prejudice and put Humagears in the government's crosshairs.
• Wham Line: After they kill Lyon, MetsubouJinrai states its next goal to a shocked Isamu, putting the Rider's goals in a much darker light and showing viewers that there's something very wrong with them:
  "MetsubouJinrai will be extinct."

Solds

Solds, Sold9, and Sold20

Portrayed by: Ken Sugawara (Sold9), Yasunari Tsukagoshi (Dire Wolf Sold Magia), Yui Narumi (Sold20), Satoshi Fujita (Serval Tiger Sold Magia)

Sold20 (left) and Sold9 (right)

Mass-produced HumaGear soldiers serving Lyon in his quest for world domination. They have the same advances in HumaGear technology as their template Jin and transform directly into Sold Magia just by activating their Progrisekeys, sans Sold9 and Sold20 above, who use unique Dire Wolf and Serval Tiger Zetsumerisekeys to transform into their Sold Magia forms.

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• By the Power of Grayskull!: They all say "Buso/Arm" before transforming into Sold Magia.
• Co-Dragons: Sold9 and Sold20 respectively are this to Lyon, never leaving his side for most of the movie. Notably, they're the only ones who use unique Zetsumerisekeys to transform instead of Progrisekeys previously used by Raiders.
  • The Dragon: Sold404 fashions himself as this to Metsuboujinrai later, leading a crusade against humankind in his name. Averted when it turns out the Rider wasn't intending on bringing about Humagear supremacy.
• Elite Mooks: They're this by design, superior models of Humagear that can fight battles in lieu of human soldiers. Solds 9 and 20 are this to the collective, thanks to the Zetsumerise Keys they use compared to everyone else's Raider Keys.
• Evil Counterpart: Sold9 and Sold20 are this to their spiritual predecessors Fuwa and Yua (who they share Key colours with), who spent the middle part of the series resisting the control of ZAIA Japan's president Gai, by means of being literal tools subservient to their ZAIA-based master Lyon. Kamen Rider Vulcan & Valkyrie later reveals that their Zetsumerisekeys would end up falling into the hands of the titular Riders, confirming this link.
• Evil Knockoff: While the hallmarks are there to be one to Jin (Their earpieces being the same and Progrisekeys chained to their arms), Lyon makes it explicit that they're the intended product, making Jin the "Good Knockoff" to the Solds, making this a Subverted Trope in terms of their relation to Jin. Their Sold Magia forms, excluding the Dire Wolf and Serval Tiger Sold Magia, are this to the Raiders of the second Arc, being RaidRiser-less Raiders.
• Face–Heel Turn: During Vulcan & Valkyrie, they see Kamen Rider Metsubojinrai as a revolutionary leader and rebel against humanity in its name. Thankfully, 9 and Fuwa get through to them before they can do any real damage.
• Flat Character: The Solds themselves pretty much have no character to speak of, thanks to the Massbrain A.I. suppressing their individuality. After their disconnection from Mass Brain, they regain said individuality.
• Heroic Sacrifice: Sold20 sacrifices herself to protect Yua from Kamen Rider MetsubouJinrai. She gets better, unlike MetsubouJinrai.
• Hive Mind: All Solds are directly linked to the Massbrain A.I., letting it make decisions for them and preventing them from reaching Singularity, ensuring that they'll always be the perfect soldiers.
• Meaningful Name: The term Sold can stand for "soldier" or "sold", fitting their status as android soldiers to be sold as weapons.
• More Expendable Than You: The Solds were built by ZAIA to be sold as expendable soldiers for conflicts all around the world.
• Ridiculously Human Robot: The parts identifying them as HumaGears are concealed in the same manner as Jin.
• Screw This, I'm Outta Here: Once KR Metsuboujinrai murders Lyon, the freed Solds run away scared from the Kamen Rider, leaving all their Transformation Trickets behind.
• Shaming the Mob: Fuwa and 9 talk them down by convincing them they're perverting Metsubojinrai's actual goal for true peace between the races.
• Sinister Scythe: For some unknown reason, the Scouting Panda Sold Magia welds Fighting Jackal's scythe instead of the Dead Monochrome.
• Superior Successor: As androids, they make perfect replacements for Fuwa and Yua as goons for ZAIA due to there being less hoops to jump through in order to bend them to their superior's will. Also, considering that they all based off of Jin's template, this makes them this trope to regular Humagears as well.
• Weaksauce Weakness: They're all reliant on the Massbrain A.I. for collective decision-making, so the moment KR Mestuboujinrai severs their connection to it, they immediately become aimless, sitting ducks.
• What Measure Is a Non-Human?: 9 and 20 debate this at the start of Vulcan & Valkyrie.

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