Characters / Kamen Rider Geats / Jyamato

Main Character Index
Protagonists (Ace Ukiyo | Keiwa Sakurai | Michinaga Azuma) | Desire Grand Prix (Sponsors and Supporters | Participants)
Jyamato | Others | Movie and Spinoff-exclusive Characters

This is a partial character sheet for Kamen Rider Geats. Subjective trope and audience reactions should go on the YMMV page.

Emblem of the Jyamato

A mysterious evil force who are the enemies of the Desire Grand Prix.

In General

• Ambiguous Species: Exactly what the Jyamato are, where they come from, and why they're attacking are entirely unknown. The events of the "Escape the Labyrinth" Game seem to imply that they are actually created for the express purpose of serving as enemies for the DGP, and the scenes with Archimedel in #11 & #12 show very clearly that he grows the Jyamato himself, while the broken Core IDs are revealed to be used as a fertilizer of sorts, providing them data as nutrients that allows them to evolve to become more intelligent and human.
• The Assimilator: Eating the corpses of Kamen Riders killed during the DGP along with their Core IDs causes the Jyamato to acquire the memories and personality traits of the deceased.
• Been There, Shaped History: Tsumuri reveals in #39 that Jyamato left over from a Grand End continue attacking people, leading to the development of urban legends and monster myths as a result.
• Botanical Abomination: They're (generally) humanoid creatures that serve as the antagonists of the DGP... and are grown in a greenhouse.
• Breaking the Fellowship: The Jyamato faction ceases to exist once the Jyamato Grand Prix comes to an end. When the Desire Royale begins, Beroba goes back to the sidelines and Michinaga, Daichi, and the Jyamato alike all see each other as enemies. While Daichi revives it in the "Genesis" arc, his supposed allies are only in it for their own purposes and it crumbles down after his defeat.
• Chess Motifs: Zigzagged. The Jyamato seem to be more tied to the game of Shogi than chess. This also explains why they continue to grow stronger over time.
• Contrasting Sequel Antagonist: Like the Bugsters before them, the Jyamato are monsters who serve as the "enemies" of the game they are in, and can also take on human appearance should they evolve enough. While the Bugsters originated from a computer virus caused by a human, the Jyamato are grown in a garden by a human and commissioned by an organization.
• Create Your Own Villain: Deconstructed. The DGP wanted to give the Kamen Riders opposition in their games by creating monsters with a Kill All Humans mentality, but the Jyamato have evolved to the point of eventually rebelling against their creators.
• Designated Villain: In-Universe, they were created by the DGP to serve as antagonists in their games.
• Earn Your Happy Ending: Yes they do, thanks to their Heel–Face Turn in #48, Ace resetting the world and getting rid of the DGP, the Jyamatos are thriving and actually co-existing with humans thanks to Daichi in the final episode.
• Evil Evolves: The Jyamato are gradually growing stronger and evolving with each round. This includes not just getting stronger, but smarter. They learn to use Desire Drivers and eventually gain the ability to shapeshift into deceased Riders and copy their memories. It's heavily implied that their evolution has vastly accelerated, which might have to do with Archimedel's own desire to destroy the DGP.
• Evil Is Not a Toy: Despite warnings, the DGP higher ups seem entirely oblivious to the fact the Jyamato are becoming rapidly becoming more powerful, intelligent, and dangerous with each passing round and Archimedel actively wants to destroy the DGP, kill off humanity, and replace them with Jyamato.
• Evil Is One Big, Happy Family: The human members of the Jyamato side all have differing motives, but this hasn't caused much friction as they set it aside for a more common goal. The end of the Jyamato Grand Prix means they also lost their one reason for teaming up and eventually see each other as enemies again due to those differing motives.
• Forever War: They've apparently been in conflict with the DGP since at least 1 A.D.
• Genetic Memory: One of their main powers is to inherit the memories of other people. This proves instrumental in their evolution as they're gaining more human-like traits. This is also exploited by Daichi as the next Gardener as another way to achieve his wish of gaining humanity's memories.
• Heel–Race Turn: They stopped antagonizing humans, after their new Gardener Daichi shifted his focus to learn the mundane happiness in humans, shown in them freeing Kekera's hostages, fighting off the End Riders, and later co-existing along humans which is Daichi's wish at the end of the series.
• Human Resources: Jyamato are grown using the broken Core IDs from slain Riders; Archimedel keeps a big bag of them in his greenhouse, along with multiple baskets full of Desire Drivers. By #14, certain Jyamato start expressing the memories of fallen Kamen Riders. #16 then revealed that slain Riders are also used as fertilizer for the Jyamato saplings, Archimedel also referring to himself as "special fertilizer" when offering his body to the Dunkleosteus Jyamato.
• The Hunter Becomes the Hunted: On at least two occassions the Jyamato turn the tables around to the Riders.
  • During the start of the Lamentation arc, Beroba hijacked the Desire Grand Prix, and turned it into the Jyamato Grand Prix, where the Jyamato compete for points by attacking and destroying humans and their belongings, with more points given if they attack the DGP Riders, their once hunter.
  • Durng the Genesis arc, Suel has turned the DGP into a Sadist Show where Riders are forced to fight each other or detonated, with them becoming a threat to the civilians, while the Jyamato under Daichi's control fight them off to defend humans and give them something to fight.
• Irony: The Jyamato were invaders of humans with the Riders being assigned by the DGP to protect humans from them. At the end of the series, the DGP directly threatens their players and even civilians, with the Jyamato acting as their protectors instead.
• It Can Think: They're not only getting stronger, but they're getting smarter as they evolve.
• Meaningful Name: Though written in katakana, their name is possibly a combination of 邪 (ja/jya), meaning "evil/wicked", and tomato, fitting their plantlike motifs, as well as the fact that they're grown in a garden from "seeds" — that is, what appear to be the shattered Core IDs of eliminated DGP Riders.
• Monster of the Week: Via Clothes Make the Superman. While their ranks are fixed and are all the same standard enemies the DGP Riders have to defeat, they are introduced in different costumes and "roles" each week/round to fit the setting of the game being played that round.
• Not Quite Dead: Even with the defeat of the Boss Jyamato signifying the end of the Desire Grand Prix, the Jyamato are never eliminated from Earth as a whole, resulting in multiple runs of the DGP being held to continue the fight against them.
• People Farms: Jyamato use the Core IDs and human flesh of fallen Riders as fertilizer. As they evolve, they become more capable of using the residual memories of the devoured humans for themselves, eventually escalating to where they can perfectly mimic the form and mind of a human they eat.
• Plant Mooks: They're plant-based creatures used as antagonists for the various games of the Desire Grand Prix.
• Secondary Color Nemesis: The Jyamato are technically tan, but are associated with both purple and a sickly green. Their emblem includes both colors.
• Spell My Name With An S: Their names can be localized in English as either Jamato or Jyamato depending on how one chooses to translate the first syllable from the katakana.
• Standard Evil Organization Squad: Archimedel, Beroba, Daichi Isuzu and Michinaga Azuma form the main players on the Jyamato's side, particularly after they hijack the Desire Grand Prix and become the staff of the "Jyamato Grand Prix."
• They Look Like Us Now: Not only are they strong and intelligent as they evolve, they eventually gain the ability to take the form of any deceased DGP player. Early ones can only make basic and inhuman movements and mimic a few of the victim's lines; but later ones, such as the 2^nd Saboten Knight Jyamato (see the "Tohru Imai" section below) can mimic the victim's personality completely and gain their memories, and probably have no visible signs indicating that they're Jyamato. Yikes.
• The Unintelligible: Much like the Gurongi or Inves Overlords, their speech isn't readily intelligible. #12 confirms that they're speaking a Cypher Language, which has to be deciphered as part of getting out of the mansion. #14 also demonstrates that they're beginning to learn how to speak Japanese; a Jyamato Rider repeats the very same words that Ginpen spoke during the early parts of the Encounter DGP, while the Jyamato that Archimedel is tending to at the end of the episode actually repeats a phrase that Shirowe said to Michinaga prior to his elimination. They eventually gain the ability to speak Japanese normally.
• Villain Protagonist: After Beroba's Hostile Show Takeover, she turns the Desire Grand Prix into the Jyamato Grand Prix with the Jyamato as the players and Riders as the Hero Antagonists.
• Would Hurt a Child: #9 has one of them kill a helpless infant in cold blood, thankfully off-screen.

Gardener

Archimedel (unmarked spoilers)

Portrayed by: Shihou Harumi

A mysterious, malevolent gardener who cultivates the Jyamato from plants.

---

• Affably Evil: He comes off as rather jolly and easygoing for a creator of plant monsters.
• Blatant Lies: When called by Girori on why the Jyamato were suddenly achieving a Rider form, Archimedel claims that they learned how to do so on their own. Considering that in his first appearance he was carrying a tray of cracked Rider cores (which makes sense, seeing as these are part of the process of making new Jyamato) and Desire Drivers (which decidedly does not factor in), and by his next the Jyamato Riders are out and about, it's highly implied that he was lying something fierce.
• Boomerang Bigot: He's seemingly a human who hates his own species, prefering his creations Jyamato to replace them. Subverted later when he lets Dunkleosteus Jyamato consume him, making him operate as a Jyamato.
• Character Narrator: He recaps the Previously on… events for the "Lamentation" arc from #25 to #29.
• Chess Motifs: Within the structure of the Jyamato he's the "King", someone who's critically important (since he's the one who creates the Jyamato) and because of this stays away from the conflict instead of actively participating in it.
• Contrasting Sequel Antagonist: Archimedel blends traits of villains from both of Takahashi's previous series, Kamen Rider Ex-Aid and Kamen Rider Zero-One. Like the Ark from Zero-One, Archimedel wants to replace humanity with a Superior Successor, but unlike the Ark it's not out of a hatred of humanity so much as a love for his chosen race and a desire to see them flourish. Like Parado from Ex-Aid, he expresses a distaste that monsters are used as punching bags for players and wants to reverse the relationship, but unlike Parado he has no personal interest in any of the players and isn't concerned with making the clash a fair fight. Unlike both of them, he's a part of the organization that's allegedly fighting the monsters, and as an old man is someone who stays on the sidelines where both of them were very active threats as evil Riders.
• Corrupted Character Copy: To Seymour Krelborn in feeding humans to plants before becoming meals themselves. But while Seymour is a bumbling man who was in over his head with Audrey Jr., Archimedel has no qualms over feeding human remains to the Jyamato and willingly allowed himself to be eaten.
• Devour the Dragon: A version of it. He allows the Dunkleosteus Jyamato to eat him whole, in order to heal it and copy his memories onto it.
• Dissonant Serenity: Despite being an evil creator of monsters who wants to replace humanity, he acts like a normal old man tending to a garden.
• Doting Parent: Acts like a caring father to his Jyamato saplings. His whole motive is to create a world where they can prosper, even at the expense of humanity.
• Dragon with an Agenda: He's working under Beroba to create a paradise for his Jyamato. Since both have the same goal of usurping the Desire Grand Prix, they seem to get along quite well.
• Driven to Suicide: He wilfully offered himself to the Dunkleosteus Jyamato for the monster to heal. Subverted in his mind being assimilated by the Dunkleosteus Jyamato.
• Enigmatic Minion: It's implied that he is part of the DGP staff—the Game Master has a direct line to his greenhouse and Girori directly calls him in #13 to ask him why the Jyamato are now able to use Desire Drivers, but he also very clearly has his own agenda to pursue with regards to the DGP, as he clearly tells one of the Jyamato he's tending to in #12 to go forth and destroy the DGP.
• Even Evil Has Loved Ones: He genuinely cares about the Jyamato saplings he grows, treating them like his children.
• Even Evil Has Standards: He wants the Jyamato to rule the world. But seeing Beroba about to blow up the Jyamar Garden has Archimedel panicking and begging her not to do it, but to no avail.
• Evil Genius: He's a botanist who makes use of his knowledge to grow evil monsters.
• Evil Old Folks: He's an elderly man who is behind the creation of the Monsters of the Week threatening Earth.
• Evilutionary Biologist: He's interested in getting the Jyamato to evolve as much as possible, in order to make them stronger so they can become a superior race that will replace humankind.
• Foil: To Girori. Both are rogue Enigmatic Minion of the DGP staff. Girori wants to ensure that the Riders win the games and save humanity, making sure the Jyamato doesn't get stronger than them, while Archimedel cares for the Jyamato like his own son and wants them to win over the Riders and humanity.
• Four Eyes, Zero Soul: He wears a pair of wireframe glasses and is an evil gardener who grows ravenous monsters.
• Fusion Dance: He allows the Dunkleosteus Jyamato to devour him, healing the monster with his mind intergrated into it.
• The Ghost: Though he's neither seen nor heard until #11, he's the one whom Girori has been communicating with via telephone.
• The Heavy: He's the creator of the Jyamato and the one responsible for supplying the DGP with enemies. Without him, the DGP wouldn't have any foes for its Riders to fight.
• Human Resources: He provides the Jyamato with human corpses and broken ID Cores to feed on. He later offers himself to the Dunkleosteus Jyamato, first with drops of his blood before feeds himself to it outright.
• Large Ham: Initially he's more subdued, but he really starts to let loose during the Lamentation arc.
• Laughably Evil: He gets a lot hammier in the "Lamentation" arc, in ways that are often played for laughs.
• Maker of Monsters: The one who cultivates all of the Jyamato that the heroes fight.
• Meaningful Name: His name is a portmanteau of Archimedes, who is widely regarded as one of the greatest polymaths in history, and Gregor Mendel, the founder of modern genetics via his experimenting on peas.
• Non-Action Guy: He grows the Jyamato, but isn't a fighter. This changes after he becomes the dominant personality of the extremely powerful Dunkleosteus Jyamato, effectively granting him a monster form.
• Not in This for Your Revolution: His only real involvement with the Jyamato Grand Prix is making sure the Jyamato stay strong enough to get payback against the Desire Grand Prix, and he couldn't care less about what others like Beroba or Michinaga do.
• Papa Wolf: Crazy though he may be, he deeply cares about his Jyamato "children", to the point where he feeds himself to the Dunkleosteus Jyamato in order to heal the monster.
• Running Gag: Every one of his phone calls with Girori ends with him recoiling from the receiver after the latter none-too-gently hangs up. #22 has him doing the hanging-up.
• The Starscream: He has a connection to the DGP, but he outright says he intends to destroy it and has his own agenda. He's also willing to go against people on his side like Michinaga if they're at odds with his goal of getting payback for the Jyamato.
• Swallowed Whole: Played for Horror. While only their shadows are seen, Daichi sees the Dunkleosteus Jyamato devouring a happy Archimedel.
• They Look Just Like Everyone Else!: Were it not for the greenhouse full of Jyamato seedlings and piles of broken Drivers and ID Cores, you'd assume he was just your average gardener.
• Transhuman Treachery: Zig-Zagged. He was a DGP staff member, but he supported the Jyamato long before letting the Dunkleosteus Jyamato eat him.
• Villain Forgot to Level Grind: Archimedel lacks the means to recoup the losses after Beroba cripples his supply chain at the end of #23, eventually being outclassed by Boost Mark II and LaserBoost. The best he could muster was the Dunkleosteus Jyamato, which was unable to surpass the aforementioned powers in the end.

The Second Gardener (spoilers)

Daichi Isuzu/Marrella Jyamato

See his section under DGP Participants.

Soldier Jyamato

Pawn Jyamato

The basic and most common Jyamato to appear. They come in a number of variations depending on the "role" they play in the game's round they appear in.

---

• Beware the Silly Ones: Despite being silly in how they move or speak, they are quite brutal, especially the Wasou Jyamato.
• Mooks: They're the Jyamato grunts.
• Offscreen Teleportation: They can ambush their targets by glitching in and out of place.
• Pokémon Speak: Their primary vocalization is jya.
  • Wasou Jyamato's proclamations are short jya when they ambush someone and prayer-like jyaaa when slowly cornering their target.

Wasou^note Japanese garb Jyamato

Dressed in red kimonos, these Pawn Jyamato act as generic evil Warrior Monks.

---

• Red Is Violent: Their kimonos are red, and they are shown to give no quarter whatsoever when it comes to their victims.
• Mix-and-Match Weapon: One of their weapons is a spear crossed with a machine gun, which can be flipped around to fire bullets.

Tozoku^note Thief Jyamato

Bandit Mooks that act as the primary targets of the "Encounter" season's Treasure Hunt Mission, with the goal being to obtain Raise Buckles "stolen" by them.

---

Zombie Jyamato

Zombies of the "Encounter" season's Zombie Survival Mission that spread The Virus through bites.

---

• Black Eyes of Evil: Victims who are in the advanced stages of zombie virus infection have the visors on their Rider helms turn black with silver veins, as shown with Da·Paan and Na-Go.

Trump Jyamato

Jyamato based on playing cards for the "Encounter" season's Concentration Mission. They can only be eliminated by destroying two of a matching pair at the same time.

---

• Laughably Evil: They are no less dangerous than the other kinds, but the silly way they move by swinging from side to side and mock the players' futile effort to fight them makes them seem less threatening.

Kasou^note Virtual Jyamato

Jyamato that can be summoned by the DGP Riders for training purposes.

---

Mafia Jyamato

Jyamatos dressed in mafia jackets that served as enemies in a previous Desire Grand Prix prior to the series' events.

---

• You Killed My Father: They appear in a flashback in #8, where it is shown that a pair of Mafia Jyamato kills Keiwa and Sara's parents in cold blood.

Kaizoku^note Pirate Jyamato

Jyamatos dressed as pirates for the "Scheme" season's Pirates/Protect the Flag Mission. Their goal is to capture the team's flag.

---

• Took a Level in Badass: Unlike the previous season's Tozoku Jyamato, the Kaizoku Jyamato are unexpectedly strong for the first round, able to quickly take down most of the teams and even giving Buffa and Geats a hard time. Even the Game Master is worried on how unexpectedly strong they were to the point where only five Riders managed to survive.

Shitsuji^note Butler and Maid Jyamato

Jyamatos dressed as Western-style butlers and maids for the "Scheme" season's Escape the Labyrinth Mission.

---

• Battle Butler: Along with Ninja Maid; they fit the aesthetics, and are certainly formidable foes for the Riders. Not to mention that their mission stage is a snazzy mansion.
• Shock Collar: Their prisoners have collars made of vines around their necks, which constrict whenever Jyamato are near.

Gakuen^note Academy Jyamato

Jyamatos mostly dressed as high school students for the "Divergence" season's Academy Mission. They are mostly Delinquent Jyamato, with the exception of a studious Non-Delinquent Jyamato and a Principal Jyamato who are the targets of a sidequest and the main mission respectively.

---

• Disproportionate Retribution: The only well-behaved Jyamato ends up having to be killed in order to obtain the Powered Builder Buckle that is essential for the mission. Even Neon felt the poor guy did not deserve this.
• Irony: The Delinquent Jyamato are highly protective of their school principal, despite being meant to be school rebels.
• Japanese Delinquents: The Delinquent Jyamato are dressed in this fashion, complete with Delinquent Hair.

Haitatsu^note Courier Jyamato

Jyamatos dressed as deliverymen for the "Divergence" season's Time Bomb mission.

---

• Throw Down the Bomblet: Their primary weapons are bombs disguised as fruit.

Ninja Jyamato

Jyamatos dressed as ninja for the "Lamentation" season's Sengoku Game.

---

Matador Jyamato

Jyamatos dressed as matadors for the "Lamentation" season's Bullfighting Game.

---

Angel Jyamato

Jyamatos dressed as angels for the "Lamentation" season's Heaven or Hell Game.

---

• Light Is Not Good: Modeled after angels they might be, but these Jyamato are still hell-bent on forcing people to participate in the Heaven or Hell Game.
• Sadistic Choice: Their role in the Heaven or Hell Game is to serve as enforcers: either you play the game and risk getting disintegrated by falling, or they'll pursue you until you're forced to play the game.

Parasite Jyamato

Microscopic-sized Jyamato capable of parasitizing humans and turning them into vessels.

---

Himawari^note Sunflower Jyamato

Jyamato that have sunflowers on their head.

---

• Flower Motifs: Some of the few meanings of the common sunflower are happiness and peace, a reflection of them being used by Daichi for more benevolent purpose of ending the misery caused by the DGP.
• Foil: With the Parasite Jyamato. The Parasite Jyamato appear in the first few episodes of the Genesis arc and parasitize humans for Daichi's quest of all knowledge. The Himawari Jyamato appears in the last episode of the Genesis arc and prioritizes protecting humans and promoting peace, much like Daichi's path to atonement.
• Token Good Teammate: Unlike the other Jyamato, Daichi designed the Himawari Jyamato to be heroic and advocate for peace, as seen with a couple of them helping Win fight against a Game Master and more of them holding off The End Riders from killing each other.
• Walking Spoiler: Discussing their actions inevitably brings up the Second Gardener's characterization at that point.

Jyamato Riders

Male type

Female type

Jyamato!

Pawn Jyamato that have greatly evolved in strength and in sapience, allowing them to make use of special Collapsed ID Cores and Jyamato Buckles with procured Desire Drivers to transform into Riders.

---

• Boss in Mook Clothing: They appear no different from any other Pawn Jyamato... at least, until they get out the Desire Drivers and the Jyamato Raise Buckles.
• Combat Pragmatist: They don't hesitate to gang up on enemies while spamming their finishers at the start of a fight.
• Elite Mooks: Emphasis on elite, as they're tough enough to overpower the Riders if they aren't properly equipped to deal with them.
• Finishing Move:
  • Jya-jya-jya Strike: Has two variations.
    • The Broy Arms sprout from the Rider's back, wrapping around its fist as it delivers a Rider Punch to the enemy.
    • The Rider envelops its leg in the Broy Arms before performing a roundhouse kick to the enemy.
• Godzilla Threshold: They're seen as this to the Game Master. So much so that in addition to forcing him to hand out the Fever Slot Buckle, he then immediately attempts to call Archimedel, presumably to demand answers.
• Grew Beyond Their Programming: Despite not being machines, while they are meant to naturally evolve over time to become tougher opponents for the DGP, them suddenly learning how to use Desire Drivers was beyond their expected scope of ability, even by the Game Master's expectations. Archimedel, however, believes it is better to leave it be to observe how this will influence their growth.
• Implacable Man: They're treated this way in their debut in the Scheme arc, even being able to evenly match Geats using Fever Boost for a short time.
• The Psycho Rangers: They're warped versions of DGP Riders.
• Purple Is Powerful: Their armor has purple highlights, and they are strong enough to give even longtime veterans like Ace and Michinaga pause.
• Resurrective Immortality: Their Drivers and Buckles grant them extremely high durability and regenerative powers that it appears as this. While it takes a Golden Fever Victory to knock them out of their transformation and finish them off for good, so long as their equipment remains intact, another Jyamato can still pick them up from their fallen allies and continue using them.
• Sinister Scythe: The female-type Riders wield massive scythes as their primary weapon.
• Vine Tentacles: The Broy Arms, which can be used as a whip, and to augment their finishing moves. Their armor and Buckle have a vine motif, and their transformation sequence involves their Rider suits being formed by them.

Boss Jyamato

Rook Jyamato

Jyamato a rank higher than Pawns. They also similarly have variations to play different "roles" in the game's setting.

---

• Arm Cannon: Their left arms can be used to shoot out projectiles as in the Jyamar Ball game.
• Elite Mooks: They're much stronger than Pawn Jyamato and serve as the "boss" for each level.
• Man-Eating Plant: They're partly themed after pitcher plants.

Toryo^note Head Jyamato

Portrayed by: Shotaro Kawashima (suit)

The chief of the Tozoku Jyamato, and the boss of the "Encounter" season's Treasure Hunt mission.

---

• Dual Wielding: It's armed with two tomahawks, which can be charged and detonated like a grenade.
• Hero Killer: The one responsible for Taira/Ginpen's death.

"Takeshi Goutokuji"

Portrayed by: Yamato Kinjo (live, human form), Unknown (suit)

A series of Rook Jyamato who have evolved to the point of being able to take the form of the deceased Takeshi Goutokuji.

---

• Clone Degeneration: While they are essentially clones of the original Takeshi, they sport visible vine-like veins on their body that clearly show that they are not human.
• Wounded Gazelle Gambit: They mainly shapeshift into Takeshi to fool Keiwa into not attacking them under the belief that they are the original Takeshi turned into a Jyamato. Their plan fails once it is established that they are clones of Takeshi and not Takeshi himself.

Knight Jyamato

Jyamato that boast a high degree of difficulty in defeating, and possess great power even by themselves.

---

• BFS: They wield giant shichishito in battle.
• Final Boss: Along with the Fortress-types, they serve as the ultimate bosses of some DGPs.

Saboten^note Cactus Knight Jyamato

Portrayed by: Masato Tsutamune (suit)

The cactus/horse-themed Final Boss for the "Encounter" game of the DGP, who grows larger by drinking human essences absorbed into its can. The only way to defeat it is to kick its can out of the Jyamar Area.

---

• Attack Its Weak Point: It can be defeated by kicking its can out of the Jyamar area. Of course, it tends to guard said can with all it's got.
  • Played more straight when it evolves to absorbing its can into its body to better protect it; its Instant-Win Condition then changes to simply destroying the can lodged in its chest.
• "Get Back Here!" Boss: It has a tendency to teleport away just before a decisive blow can be landed on it, usually because it ran out of humans in the area to absorb.
• Hero Killer: The Saboten type in #7-#9 once defeated an entire group of players and actually successfully destroyed an area once before. In the first arc, it ends up wounding Keiwa so badly that he has to drop out of the DGP least he succumb to his wounds.
• Instant-Win Condition: Kicking its can out of the Jyamar Area will cause it to die from losing all of the energy it absorbed, making the one who achieves this the sole winner. However, it's much harder than it sounds, as not only does it fiercely protect the can with almost no blind spots, as it teleports away to a new location it creates another Jyamar Area and subsequently an even larger overall Jyamar Area that expands to cover every previous location it's been — the win condition is to specifically get its can out of the larger overall area.
• Make My Monster Grow: By drinking human essences from the can, it's able to grow to kaiju-level size.
• Multiple Head Case: It's got two heads, which it uses to great effect by leaving it with no blind spot to exploit.
• Our Monsters Are Weird: A giant two headed horse man with cactus armor that turns people into energy drinks.
• Planimal: The one encountered in #7-#9 has characteristics of both a horse and a cactus.

"Tohru Imai"

Portrayed by: Tasuku Maekawa (live, human form), Takahiro Yoneoka (suit)

A Knight Jyamato taking the form of the deceased Tohru Imai.

---

• Body Backup Drive: Has inherited the memories and personality of the original Tohru in addition to his appearance, effectively reviving him with itself.
• Degraded Boss: Downplayed. Compared to the first Knight Jyamato that we see in the show where that was the Final Boss for the Encounter Arc, having injured Keiwa enough that he was taken out of the game and needing Monster's hatching to be defeated, this Knight Jyamato is much easier to handle in comparison as he's the first Jyamato to be taken out in the Jyamato Grand Prix. That said, he's still as strong as the original Knight Jyamato that a new Buckle needed to be made just to beat him.
• Doppelgänger Gets Same Sentiment: Michinaga actually returns to his softer demeanor around him. Though it's ultimately defied when "Tohru" is destroyed by Geats in #26, with Michinaga coldly remarking that he was just another Jyamato.
• Every Scar Has a Story: This Jyamato even replicates the scar on Tohru's right hand he received back when he and Michinaga were delinquents.
• Evil Duo: Briefly forms a sort of duo with Michinaga that he had with the original Tohru. Compared to Michinaga, Tohru seems to be the calm and collected one.
• Unwitting Pawn: Turns out Michinaga was merely using him to defeat Geats, and never believed he was Tohru come again to begin with.
• Villainous Friendship: Even though they're both now Jyamato, he seems genuinely interested in resuming his friendship with Michinaga. Too bad Michinaga didn't reciprocate.

Bishop Jyamato

Jyamato a rank lower than Knights. Like Rooks, they vary depending on the game.

---

• Mushroom Man: Their design appears to be an amalgamation of different types of mushroom and fungi.

Kakurenbo^note Hide-and-seek Jyamato/The Red Hat Girl

Portrayed by: Anna Sahara (live, human disguise), Takuma Komori (suit)

The boss of the "Scheme" season's Musical Chairs mission.

---

• Enfant Terrible: Its human guise plays an antagonistic role in the third round of the "Scheme" DGP, stealing the contestants' Desire Drivers and giving them to the Jyamato, sporting a sinister smile while doing so.
• Impossible Thief: It can somehow swipe the Riders' Drivers from about ten feet away.
• Master of Illusion: Its spores have hallucinatory effects, allowing it to disguise itself and turning enemies against each other.

Bakudanma^note Bomb demon Jyamato

The boss of the Haitatsu Jyamato, who produces the bombs its subordinates deliver.

---

• Mook Lieutenant: Leads the Haitetsu Jyamato.

Fortress Jyamato

Gigantic Jyamato of higher rank than Knights that serve as the Jyamato's living bases.

---

• Combat Tentacles: They sport massive ones that can destroy things in their way. They're also how Shirowe meets his end; Geats makes sure to shoot them off first before actually getting into combat with it.
• Energy Weapon: Their primary attack appears to be firing energy blasts.
• Final Boss: Along with the Knight-types, they serve as the ultimate bosses of some DGPs.
• Hero Killer: They're responsible for two of the on-screen Rider deaths. The Slug Fortress kills Takeshi/Shirowe, while the Rafflesia Fortress kills Michinaga/Buffa (albeit it's later revealed he survived this thanks to the effects of the Zombie Buckle).
• Kaiju: They are massive in size and tower over everything.

Slug Fortress/Shiro^note Castle Jyamato

The sea slug/Japanese castle-themed Final Boss of the "Dawn" DGP.

---

• Kill It Through Its Stomach: How it is defeated by Geats: like a real fortress, it is best to damage it from the inside and since it's also a creature, attacking it this way is essentially this.
• Starter Villain: Served as this for the first episode, being the first non-Mook opponent Geats is seen fighting. Ironically, it was the Final Boss of the "Dawn" DGP and is referred to as such In-Universe.

Rafflesia Fortress/Yojo^note Western castle Jyamato

The Rafflesia flower/European castle-themed Final Boss of the "Scheme" DGP.

---

• More Dakka: Alongside the energy cannon in its flower's center, it's also armed with machine gun turrets on its body.

Dunkleosteus​ Jyamato (spoilers)

Dunkleosteus Jyamato/"Archimedel"

Portrayed by: Various (suit), Shihou Harumi (live, human form)

^{Click here to see it as "Archimedel".}

A dunkleosteus-themed Jyamato and contestant of the JGP's Bullfighting game. It later assumes the form and consciousness of Archimedel after devouring the latter.

---

• Alas, Poor Villain: Archimedel/Dunkleosteus​ Jyamato spends his final moments surrounded by the Pawn Jyamato the original Archimedel helped grow, bidding farewell to his "children" and wishing for them to find happiness.
• An Arm and a Leg: Loses an arm after being beaten by Neon, but survives this.
• The Assimilator: The Dunkleosteus Jyamato swallows Archimedel whole, asborbing the man's mind and assuming his form.
• BFS: The Land Cleave, a massive coral-themed greatsword. Its name is an allusion to the city of Cleveland, where the first dunkleosteus fossil was discovered.
• Body Backup Drive: Archimedel allows the Dunkleosteus Jyamato to eat him in the end of #31, his mind now resding in a Jyamato body.
• Climax Boss: In #30, although not for Ace. The monster fought and defeated by Neon and Kyuun together.
• Disc-One Final Boss: Archimendel is the one cultivating the Jyamato in a body far tougher than ordinary Jyamato, but the Dunkleosteus​ Jyamato's death by Ace and Michinaga does not end the Jyamato threat for good.
• Evil Versus Evil: Even though Buffa is on his side, Archimedel still views him as an obstacle to achieving an ideal world for the Jyamato. Once the Desire Royale gets initiated, Archimedel/Dunkleosteus​ Jyamato is perfectly willing to attack him.
• Fossil Revival: The Dunkleosteus​ Jyamato is found in a fossilized form instead of being grown in the Jyamar Garden.
• Fusion Dance: Archimedel tells the Dunkleosteus​ Jyamato to eat him to fully heal. But the Dunkleosteus​ Jyamato gains Archimdel's form and conscious in the process, more or less fusing the two together.
• Genius Bruiser: After devouring Archimedel, the durable Dunkleosteus​ Jyamato gains the man's intelligence.
• Godzilla Threshold: Archimedel revives the Dunkleosteus​ Jyamato when Beroba decides to up the ante against the DGP Riders.
• Identity Absorption: The Dunkleosteus​ Jyamato consumes Archimedel, and gains his appearence and consciousness.
• More Teeth than the Osmond Family: There are WAY too many teeth in the thing's mouth to be considered normal.
• Nightmare Face: Just LOOK AT IT!
• Odd Name Out: Unlike the other Jyamato types that follow a chess motif, a dunkleosteus is a fish.
• Sand Is Water: The Dunkleosteus​ Jyamato can dive into solid surfaces, ambushing Keiwa during his round and bringing Neon to the Matador fight.
• Super-Toughness: The Dunkleosteus Jyamato is absurdly tough, capable of taking far more punishment without dying than other Jyamato. Even having its arm and half its torso blown off isn't enough to kill the monster and while fully regenerating an episode.

Allies

Beroba

See her section under DGP Sponsors and Supporters for more details.

Michinaga Azuma/Kamen Rider Buffa

See his page for more details.

Daichi Isuzu/Kamen Rider Nadge-Sparrow

See his section under DGP Participants for more details.