[[caption-width-right:250:[-Counterclockwise: [[MessianicArchetype Agito]], [[WeakButSkilled G3]], and [[TheBerserker Gills]], and in Agito's eye, [[MonsterOfTheWeek An Unknown]]-] ]]
->''"Awaken the soul!"''

'''''Kamen Rider Agito''''' is the 2001-2002 entry in the ''Franchise/KamenRider'' franchise, and second in the Heisei Era.

All across the city, [[LockedRoomMystery mysterious and impossible murders]] are taking place, carried out by angelic creatures that are ImmuneToBullets and seem to be hunting very specific families.

Two years following the [[Series/KamenRiderKuuga incident with the unidentified lifeforms]], the Metropolitan Police Department commissioned their best technical geniuses to create an effective countermeasure should their city ever be plagued by monsters again. The result was the Generation 3 (G3) PoweredArmor, worn by capable-but-klutzy police officer Makoto Hikawa. In response to these supernatural creatures, codenamed "Unknowns", the G3 Unit is sent out to protect the city. They find an uphill struggle ahead of them not just against the Unknowns but against those within their own police department who would seek to use the G3 System for their own gain.

Ryou Ashihara had a promising career as a swimmer until a near-fatal car accident. He began to swim again once he had healed, only to find that his body had undergone a metamorphosis, one that would drive all of his former friends and confidants away from him. After this, he receives a letter containing a list of passengers from the Akatsuki-Go cruise liner: the same cruise liner that his father boarded shortly before committing suicide. Ryou resolves to uncover the reason why his father committed suicide, driven by his loneliness and the new power he has attained: to transform into the feral creature known as Gills.

Shouichi Tsugami is a man without a past. Months ago, he washed up on a beach [[LaserGuidedAmnesia with no memory]] and an empty envelope addressed to himself. Taken in by the Misugi family, he enjoys nothing more than a simple life tending a vegetable patch and looking after the household. However, when an Unknown is about to attack a human, he feels an overwhelming compulsion to go to their defense, summoning a mysterious power he knows nothing about but holds the key to everything: the ability to transform into Kamen Rider Agito.

This show links the stories of all three men together as they attempt to uncover the mysteries surrounding the Unknown and the source of the Agito power, clashing not only with the Unknown but with their own insecurities, pasts, and with each other.

Partnered with the ''Franchise/SuperSentai'' show ''Series/HyakujuuSentaiGaoranger'' after initially airing alongside the final episodes of ''Series/MiraiSentaiTimeranger'' in what would later be known as the ''Series/SuperHeroTime'' block.

!!Recurring ''Franchise/KamenRider'' tropes:
* AllThereInTheManual - ''So, so much'' in terms of names. Agito's forms, the names Gills and Another Agito, the monster names, and even the Unknowns' true names being the Lords? ''Never'' mentioned in-show. The same goes for weapons and most vehicles. (Including the Tornador, if its name being in one of the battle songs doesn't count.
** Actually, a character referred to Gills as such after his second transformation into that form
* AllYourPowersCombined - Agito Trinity Form.
* BadassBiker - Naturally.
* BigBad - The Overlord of Darkness. [[NamesToRunAwayFromReallyFast The name's subtle hint]], isn't it?
* TheCameo - Creator/HiroshiFujioka appears in ''Project G4'' as the MPD superintendent general and briefly interacts with Shoichi, showing approval for the young man.
* CoolBike - Normally this is the part where we say "Kamen ''Rider,'' of course," but many TurnOfTheMillennium series only have the bike in an episode or three for MerchandiseDriven purposes and not everyone gets one. This series is ''not'' like that. All the Riders do plenty of riding, their civilian-used machines transforming with them (how does a semi-mystical evolution-mutation-thing do that? [[RuleOfCool Best not to ask]].) except for non-morphing G3, of course. There are several bike chases as well.
* ClothesMakeTheSuperman: A major plot point of the [=G3=] System. Hikawa's role as the wearer of the [=G3=] comes into question a few times and as a result, other characters get their chance to wear the armor as well.
* ElementalPowers - Each of Agito's forms have one.
** DishingOutDirt - Ground Form
** BlowYouAway - Storm Form
** PlayingWithFire - Flame and Burning Forms.
** LightEmUp - Shining Form
* HenshinHero - Averted with the G3 and its cousins, who, unlike most Riders, cannot [[ByThePowerOfGrayskull "henshin"]] but must don their armor the old-fashioned way. (see Homage)
* MidSeasonUpgrade - After the G3 is torn apart by [[spoiler:Gills]], it gets rebuilt as the better, stronger G3-X equipped with MoreDakka and [[AIIsACrapshoot one hell of an AI]].
* MultiformBalance: Agito gets multiple forms to choose from: Ground Form is a JackOfAllStats, Storm Form is a FragileSpeedster, Flame Form is a Stone Wall, and combining all three into Trinity Form makes him a LightningBruiser. He then gets a MightyGlacier Burning Form before his final SuperMode, Shining Form.
* TransformationTrinket: Gloriously averted - the fact that Agito and Gills have to evolve from humans means that those belt buckles are ''[[BodyHorror growing out of their bodies]]'', while G3, well, has to be bolted into his suit.
%%* WeaponOfChoice

!! Series/KamenRiderAgito has examples of:
* AbsurdlySharpBlade - G3's GS-03 "Destroyer"[[note]]G3 is wearing it in the page image[[/note]] and G3-X's GK-06 "Unicorn", a vibration arm-sword and handheld knife.
** The former is something of a subversion as, due to its [[BladeBelowTheShoulder design]], it never lands a hit on anyone. [[Series/KamenRiderDecade Ever.]] The latter, despite being maybe half as strong, is effective against the series [[TheDragon Dragon]].
* AbusivePrecursors - The Overlord of Darkness. Though to be fair, he's more afraid of humanity overpowering him than outright evil.
* AccidentalMisnaming:
** Type C: As a RunningGag, Shouichi will often refer to other characters, particularly Hikawa, as "Kongouji".
** In the movie, this is reversed onto Shouichi. In a brief scene, he's stopped by someone when he leaves a restaurant. The person has mistaken him for an old classmate named, you guessed it, "Kongouji".
* AdaptationalVillainy: The Lords normally get hit with this in appearances after the series ended, being upgraded from {{Anti Villain}}s to full blown villains. Basically, in the teamup movies, hordes of past monsters from all seasons attack the combined Riders, often ignoring how they originally worked and what their motivations were. Using major NightmareFuel magical methods to kill people with powers that are a sign of their Seed of Agito waking up so humanity can't overthrow the Overlord of Darkness isn't exactly compatible with attacking non-Agito-related Riders with their bare fists.
* AlcoholHic: Ozawa comically downs whole pitchers of beer (when offscreen for a moment, the full pitcher will return half full, and again and be empty, and then get refilled. This process ''repeats multiple times'' during this scene.) and at no point appears to be even a little impaired. She leaves, creates G3-X, then gives a hiccup.
* BackFromTheDead - [[spoiler:Ryou Ashihara]]
* BadassNormal - G3/G3-X. They're just normal humans wearing a high tech battle suit, and yet still manage to kick butt. Infact, in a way, this gives him some added benefit, as [[spoiler: the Lords are forbidden from killing a normal, non-evolved human or the Overlord will kill them.]]
* TheBerserker: Gills is given to primal screams and wild attacking that gets him compared to ''Series/KamenRiderAmazon.'' Agito himself is much ''less'' this, but is mostly driven by instinct, rarely speaking during battle, and, once in an early episode, nearly attacking Hikawa right after the monster before he manages to stop himself.
* BodyHorror - Gills. Aside from the painful side-effects of being [[spoiler:an imperfect Agito]], Ryo's entire body transforms into a feral insectoid with fangs and claw protrusions. Unlike G3 or Agito, who are clothed in armor, Ryo's body literally becomes a monster.
** Double points for MidSeasonUpgrade Exceed Gills, who has [[spoiler:tentacles that emerge from folds on his back]].
* BoringButPractical - G3/G3-X compared to most other Riders. He can't transform and has to put his suits on like a normal person and is armed with guns instead of supernatural weapons. However, his suits do exactly what they were designed to; keep the user alive and fight the Unknown. In fact he has the highest defense of any Rider in ''Agito''. In fact, take a look at BadassNormal above, and you'll see that [[spoiler: BECAUSE the users are normal, the Unknowns aren't even allowed to kill them.]]
* {{BFG}}/GatlingGood - The G3-X System's GX-05 "Cerberus", roughly the length of the suit actor's leg. It can even launch grenades.
* BladeBelowTheShoulder - G3's GS-03 "Destroyer" is an arm-mounted vibration sword. Strangely, it's also a {{Deconstruction}} of the trope, as it's inherent design makes it inaccurate - the hilt is the size of the user's ''forearm'', which makes it that much easier to grab.
* BlessedWithSuck - getting psychic powers in this world (themselves typically not particularly useful) = marked for death by the Unknowns.
* BrandX - Averted with G3's [[CoolBike Guardchaser]] - it's apparently made by Honda in-universe[[note]]it has the Honda logo prominently on the cowl - which the real-life bike the Guardchaser is built on doesn't have[[/note]]. Which makes sense; it's a souped-up cop bike.
* BroadStrokes: ''Agito'' was originally written as a sequel to ''Series/KamenRiderKuuga'', but the writers of ''Kuuga'' objected to the idea since it would've made Godai's battles meaningless. Instead, ''Agito'' was rewritten to work as its own standalone story with certain details between ''Kuuga'' and ''Agito'' changed. WordOfGod says it's your choice whether or not you should watch it as a Kuuga sequel/continuation/parallel universe, however, since the {{Continuity Nod}}s (mostly the first few episodes and the whole reason for G3-X existing), supplementary backstory tie-ins, and similarities are ''still'' present either way.
--> ''"You're free to enjoy Agito as a continuation of Kuuga if you so wish, or imagine it takes place in a parallel world, if you so choose. I appreciate this may sound like an asspull, however, so I guess I would say that while Agito takes place '2 years after #4 destroys the Unidentified Lifeforms', it is not a sequel to Kuuga, so take to the show with that in mind."''
---> --'''Kamen Rider Agito Production Site'''.
* BrokenPedestal - Houjou and Ozawa's mentors are both examples of this trope. [[spoiler:Houjou's mentor turns out to be a murderer, and Ozawa's mentor has a long-standing grudge against her. For once in his life, Houjou actually does the right thing and turns in his mentor. Ozawa's mentor, however, gives her a chip limiting the G3-X to controllable limits.]]
* CallingYourAttacks - Like its predecessor [[Series/KamenRiderKuuga Kuuga]], it's averted and never happens. Although aversion of the trope was fairly common for most of the early Heisei series.
* CanisLatinicus - All the Unknowns except the El have Latin genus and species names. The Latin is surprisingly good (maybe not ''quite'' perfect, but still...). The genus names sometimes come from real genera, while the species names are usually [[MeaningfulName meaningful Latin words]] (and the genus names sometimes also fall under this). The given katakana spellings indicate a surprisingly good knowledge of Latin pronunciation.
* CapeBusters: G3 Team is technically this. They're normal people who fight mystic beings with just PoweredArmor and some hightech weapons. At one point, they ''are'' sent after Agito.
* CatsAreMean - The entire class of Leopard Lords qualify.
* CoconutSuperpowers - The Machine Tornador's hoverboard form looks cool and seems useful - but the extreme CG cost meant that it only made 3 appearances over the course of 51 episodes, with 1 more in the movie.
* CombatTentacles - Gills has these.
* ContinuityNod - The G3 suit was originally designed to fight [[Series/KamenRiderKuuga Grongi]]. In fact, it looks like a robotic version of Unidentified Life Form #4 and is referred to as such. ''SIC Hero Saga'' ups the reference by showing the G-1 as looking near-identical to Kuuga.
** G3's bike, the Guardchaser, also takes its name from Kuuga's Try/Beatchaser.
* CosmicPlaything[=/=]YankTheDogsChain: The universe seems bent on making Ryou's live as full of suffering as possible. Whenever it seems it will get better for him, it's just going to last for a really short while before his life get worse again. Hell, in the epilogue, [[spoiler: he is the only one who is shown without friends or family and only has a puppy as his companion in WalkingTheEarth.]] Poor guy....
* CrazyPrepared - Dr Kino carries a set of surgical tools on his person at all times.
* CreationMyth
* CreepyChild: The Overlord of Darkness first appears this way
* DarkIsNotEvil - The Overlord of Darkness isn't exactly evil, just afraid humanity will overpower him and trying to wipe out those who could do so. [[spoiler:And in the end decides to let mankind move on.]]
* DeadlyUpgrade - The G4 Armour from TheMovie. G3-X as well, but only initially.
* {{Determinator}} - Hikawa. When your PoweredArmor is thoroughly outclassed by both your enemies and your allies, you have to be a {{Determinator}} just to stay in the game.
* DeityOfHumanOrigin: [[spoiler:According to spinoff materials, the Overlords have actually originated from the [[Series/KamenRiderKuuga Linto Tribe]], who were the ancestors of humans.]]
* DelayedReaction - The Lords, at least early on, tend to have this when they're killed by Agito's Rider Kick. In one instances, the Lord in question stands up, brushes herself off and laughs...then explodes suddenly. G3's Salamander gets this as well on one monster as well. The only Rider whose finisher seems unable to get this is Gills, but in his case it probably has to do with the long blade driven about an inch or two into their shoulder.
* DevilButNoGod - [[spoiler:The Overlord of Light was killed by the Overlord of Darkness. But the former got the last laugh by implanting humanity with the Seed of Agito so that they might surpass the control of the Overlord of Darkness]]. Though to be fair, [[spoiler:[[DarkIsNotEvil the Overlord of Darkness isn't exactly evil]], he just was afraid of humanity and never truly understood them.]]
* DidYouJustPunchOutCthulhu - In episode 46, Shouichi decks the Agito-verse's equivalent of ''God''. [[spoiler:This leads him to decide humanity is too dangerous to keep around anymore...]] And in the final episode, he tops it off with a Rider Kick.
* DisposableWoman - Several.
* DistantFinale
* TheDragon - El of the Water. The other two El Lords may qualify as well.
** Before them, Sawaki.
* EvenEvilHasStandards - The Unknown will only kill humans who have the potential to become Agito. One Unknown that kills an ordinary human is later forced to kill itself.
* EvolutionaryLevels: The entire premise of the series, [[spoiler: the Overlord of Light gave humans the ability to evolve into something that could overpower the Overlord of Darkness someday.]]
* FaceHeelRevolvingDoor - [[spoiler:Kaoru Kino is introduced as a mentor figure, pulls a FaceHeelTurn when he decides to kill all the other Agito, and eventually pulls a HeelFaceTurn when he has a change of heart.]]
* FamilyUnfriendlyDeath - Many of the Unknown's modi operandi fit the bill. The Tortoise Lords bury their victims alive, the Zebra Lords cause rapid decay, and the Bee Lords ''phase their victims into walls''.
** In the TV special ''A New Transformation'', the Beetle Lord shoots a dart that causes its victims' bodies to collapse into ash. Has shades of BodyHorror - especially when one victim tries to runs away from the Lord with a limp. Cue him looking down to find his left leg having vanished into a pile of ash.
* FinishingMove - Like nearly every Rider in existence, the leads in this series all have their own. Agito, in fact, has one for every form. Gills (and his MidSeasonUpgrade form Exceed Gills) has the Heel Claw. And Another Agito has the Assault Kick.
** G3 might be an averted example, but its successor G3-X has something akin to a finisher in the form of his [[{{BFG}} Cerberus Gatling Gun]]. G3-X generally starts a fight with his other weapons before breaking out the Cerberus to finish off his enemy.
* FragileSpeedster - Gills fits under this archetype the most.
* FunWithAcronyms - SAUL, the '''S'''quad '''A'''gainst '''U'''nidentified '''L'''ifeforms, invokes yet more RuleOfSymbolism.
* {{God}}: [[spoiler: The Overlord of Darkness]]
* [[spoiler: [[EvilCannotComprehendGood God Cannot Comprehend Humanity]] In the final episode when the Overlord of Darkness returns to the realm where the human he revived and borrowed the appearance of is about to die, he says his purpose for reviving that man was to have him become the Overlord's angel who would kill Agito. However, even though he had been defeated by humans and Agito working together, the Overlord of Darkness believed that humans would one day kill Agito. The man he had borrowed the appearance of called him on it, saying that even if the Overlord of Darkness created humanity, he has absolutely no idea what humans are like, and that they will be able to accept Agito. The Overlord of Darkness responds by saying that they will wait and see together.]]
* GodIsDead: Sort of. [[spoiler: Only one of the two is. Also, at some point Overlord of Darkness did [[PhysicalGod physically "die"]], so he sealed his DNA into a giant puzzle.]]
* GodIsEvil[=/=]SatanIsGood - [[spoiler:The BigBad, the Overlord of Darkness is actually the creator of humanity, who sees them as his pets. His ancient adversary, the Overlord of Light, is the {{Trickster}} who gives humanity the means to free themselves from control of the Overlord of Darkness]].
* GodIsFlawed: [[spoiler: While Overlord of Darkness isn't actually evil, he has little understanding of humanity.]]
* GoneHorriblyRight - The problem with the G3-X's AI isn't that it doesn't work: [[spoiler:instead, it works ''too'' well; it's so perfect that only a perfect man can keep up with it]].
* GrapplingHookPistol - averted: the GA-04 "Antares" fits on G3-X's arm like an ArmCannon and looks mechanically plausible. But he doesn't use it to BuildingSwing; instead using it to keep a fast Unknown from running away from its [[GatlingGood GX-05]]-related death.
* HarmonyVersusDiscipline - Shouichi is Harmony, Hikawa is discipline. This becomes a plot point during the G3-X arc, as Shouichi's harmony works better with the G3-X's AI than Hikawa's discipline.
* HealingFactor: Gills, somewhat. He shows able to regenerate some injuries, particularly when the Ant Lord Queen tears his arm off; transforming into his SuperMode causes it to regenerate.
* HealingHands - [[spoiler: Mana, of all people]], turns out to have this, but [[spoiler: she burns it away when she revives Ryou, curing his RapidAging in the process.]]
* HeelRealization - [[spoiler:In the end, the Overlord of Darkness finally realizes that his assault on humanity may have been misguided and decides not to destroy them.]]
* HiddenHeartOfGold: Houjou despite being a jerk, does seem to genuinely have one from all the PetTheDog moments he has (see below).
* {{Homage}}: The G3 System and related department (SAUL) is similar to an older ''Franchise/MetalHeroes'' show, ''Series/BlueSWAT'' (right down to the need for a support van), while using arm weaponry not far removed from that of [[Series/KamenRiderV3 Riderman]]. The competing V-1 system goes further, visibly resembling Series/SpaceSheriffGavan and [[PropRecycling using a surviving]] ''Blue SWAT'' prop as its main weapon (the customized Dictator handgun).
** Kaoru Kino's [[Manga/BlackJack brilliant but unlicensed medical background]] seems familiar. The emphasis placed on his replaced right arm is also similar to Riderman's.
** Gills transformation and brawling fighting style seems very similar to another [[Series/KamenRiderAmazon feral Rider]].
* HumansAreSpecial: [[spoiler: In the finale, the Overlord is convinced of this and decides allowing humanity to evolve isn't such a bad thing.]]
* ImmuneToBullets - The Unknowns, most of the time. Makoto is very surprised to find this out the first time since the G3's GM-01 "Scorpion", while likely averting this trope against the [[Series/KamenRiderKuuga Grongi]], packs more power than a rifle.
** Subverted later with the G3-X's [[{{BFG}} GM-05]] [[GatlingGood "Cerberus"]] - turns out they're not ''totally'' immune...
* {{Leitmotif}} - The [[spoiler:Overlord]] is the most obvious example: nearly every appearance by him on-screen comes with dramatic orchestral music.
* KarmaHoudini - [[spoiler:Houjou, who, despite having been a total dick throughout the series, escapes with his ass unkicked. However, he is satisfyingly cowed the first time he fights an Unknown. The assholery ends there.]]
** While he is an ass, he never quite does anything that would make him a [[spoiler: bad cop]].
** [[spoiler:And he does get a few BreakTheHaughty moments for being an asshole. He even gets a WhatYouAreInTheDark moment when he learns about a case-breaking clue in a murder. He was forced to decide if he should keep quiet about it and let the G3 Unit be reformed as he wanted, or make the murderer face justice and give the G3 Unit another break as a consequence. He choose the latter. So the KarmaHoudini trope is voided. Not to mention the pet the dog moments (see below).]]
** The Overlord of Darkness himself [[spoiler: seems to get off scot-free.]]
* TheLadette - Sumiko Ozawa is exceedingly blunt, making it a point to slag off anyone she has a problem with to their face. She's also a heavy drinker; in one episode, she had no less than seven pints of beer in one sitting, and she didn't come off as even slightly drunk afterwards. Then you add the fact that she's got some aspects of WrenchWench (with her being the creator of the G3 System and all)...
** Best part? She designs the G3-X pretty much ''immediately after drinking the 7+ pints of beer''. And this is a kid's show!
* LaserGuidedAmnesia
* LightheartedRematch: In the DistantFinale, [[spoiler: Ozawa and Houjou insult each other as usual upon running into each other again, but as they walk away from each other, each smiles.]]
* LockedRoomMystery - ''Every'' murder by the Unknowns. Except there's never a lock, and only rarely do they happen indoors.
* LuckyCharmsTitle - Agito is spelt "AGITΩ" in the show and all official merchandising.
* MeaningfulName
** The villains of the show have a double meaning. Their first meaning, the Unknown, as in their motives at the start of the show were ''unknown''. Their second meaning comes when the show digs deeper in their story. The Lords, [[PhysicalGod fit their very power]].
** The name "Agito", is a Latin word meaning "to put into motion", referencing Shoichi's evolving powers.'
** The name of the boat that Shoichi gained his powers from is called the Akatsuki, which means Dawn... [[spoiler:as in the dawn of a new generation of humanity]].
* {{Metaphorgotten}} - In episode 32, Hikawa tries to explain to Professor Misuki why he should go easy on Mana, but the Professor takes his comparison and runs with it.
-->'''Hikawa''': No, no violence! You have to treat girls like glass goods.\\
'''Misuki''': Glass goods... But, how much is this glass good?\\
'''Hikawa''': Huh?\\
'''Misuki''': There are various types of glass goods. You care for them depending on their value.\\
'''Hikawa''': That's... Maybe she's about 50,000 yen?\\
'''Misuki''': You'd only pay 50,000 yen for Mana?!
* TheMovie: Notable for being the first ''Franchise/KamenRider'' movie to tell its own story (and pretty much started the tradition of Heisei Rider movies to be set in an AlternateContinuity until, arguably, ''Kabuto'' or ''Den-O''), and for introducing the concept of movie-exclusive Riders (in this case, G4).
* MundaneMadeAwesome - Shouichi eating a salad, accompanied by the more HotBlooded theme of the season. ItMakesSenseInContext.
* MythologyGag - Not only is Another Agito's design meant to invoke the Showa Kamen Riders (it even comes with a ScarfOfAsskicking of sorts), but his motorcycle resembles the one used by Series/KamenRiderBlack.
** And the finale mimics that of ''Series/KamenRiderKuuga'' in more ways than one. [[spoiler:DistantFinale format, filled with WhereAreTheyNow, and the lead protagonist doesn't show his face till the end of it.]]
** The first group of monsters are big cats, and the second are turtles. This homages ''Series/KamenRiderV3,'' where the first monsters of the week were Scissors Jaguar and Turtle Bazooka. Especially fitting because ''Agito'' is the second series of the revived franchise, just as V3 was the second series of the original franchise. ''V3'' and ''Agito'' also both [[Series/KamenRider follow]] [[Series/KamenRiderKuuga series]] where the first monsters were a spider and a bat.
*** Another ''V3'' MonsterOfTheWeek reference comes from the Scorpion Lord, [[http://static1.wikia.nocookie.net/__cb20120716043312/kamenrider/images/thumb/7/7c/Leiurus_Acutia.jpg/220px-Leiurus_Acutia.jpg Leiurus Acutia]], who is modeled after ''V3's'' [[TheDragon Dragon]] - Doktor G. The Lord's design is clearly based on the Doktor's monster form - [[http://static1.wikia.nocookie.net/__cb20120109120356/kamenrider/images/thumb/0/0f/V3-vi-kanilaser.jpg/220px-V3-vi-kanilaser.jpg Kani Laser]] - right down to the axe, shield, and general head shape. The reference is further enforced by the fact that [[ShoutOut they both make their first appearances on the 13th episodes]] of their respective shows.
**** The ShoutOut takes a step further when you realize that Doktor G's organization is Destron - the ''V3'' baddies with [[https://31.media.tumblr.com/3b8a0746d5824e204e825e41897b2163/tumblr_inline_n0dwkztb8J1rp2zrg.jpg this logo]]. ScaryScorpions, indeed.
*** The Riders themselves have references to ''V3'' - e.g. Another Agito's two scarfs resemble V3's own double-scarf fashion choice, and the G3-X's GA-04 Anthares is modeled after Riderman's Rope Arm.
* OminousLatinChanting
* OurAngelsAreDifferent - Ones who would protect you from [[Series/KamenRiderKuuga monstrous humanoids]], but kill those with a potential superpower.
* PaletteSwap - Several of the Unknowns, typically to show that they're related somehow.
* PassiveAggressiveKombat - Houjou is a MASTER of this, displaying it almost every other time he opens his mouth around the G3 unit.
* PetTheDog - Despite being a selfish {{Jerkass}}, Houjou has two PetTheDog moments:
** When Houjou discovers [[spoiler:[[BrokenPedestal his mentor]]]] is a murderer, he turns the guy in despite [[spoiler:the massive amount of respect he has for his mentor]].
** When Hikawa [[spoiler:starts going blind from stress]], Houjou [[spoiler:acts as Hikawa's eyes]] to help him fight an Unknown, with no apparent ulterior motive.
* PhlebotinumBreakdown - Gills' transformations cause rapid cellular delay, greatly shortening Ryou's lifespan.
* PhysicalGod - The Overlords.
* PoorCommunicationKills - Ryou/Gills thinks Agito is responsible for the death of his girlfriend, and goes after him at every chance. Ryou and Shouichi are unaware that the other is Gills/Agito, but are familiar with each other. Rather thoroughly averted (especially when compared to ''Series/KamenRiderFaiz'') when they finally find out - Ryou's reaction is a surprised "''You're'' Agito?!", followed by forgiveness and cooperation.
** This was the first season with Toshiki Inoue (who is a signature user of this trope) as the head writer, after all.
* PoweredArmor - G3, G3-X, G3-MILD, V1 and TheMovie's G4. They're heavy armor over an artificial muscle suit.
* PowerDegeneration - a side effect of transforming into Gills, in the form of post-fight RapidAging. Healed out of existence (as a side-effect, apparently) when [[spoiler: Mana revives Ryou]].
* PsychicPowers - Mana is an [=ESPer=]. Most of those who have the potential to become Agito are telekinetics, and the rest are [=ESPers=] like Mana.
* RearrangeTheSong: Starting with episode 36, the opening theme is replaced by "Kamen Rider AGITO ~24.7 version~," a remix with different lyrics and a heavier rhythm.
* RocksFallEveryoneDies: In-universe. The Overlord of Darkness still likes 'normal' humans just fine while battling the Riders who got their powers from the Seed of Agito. But then, ''Hikawa'' lands a decent hit on him in his purely manmade armor. This makes him decide humans in general were a bad idea and he should KillEmAll, setting up the final few episodes.
* RuleOfSymbolism - So, so much. Most notably the Unknowns, who have wing-like protrusions from their backs and halos flashing above their heads when they want to summon a weapon or right before they die.
** They even cross themselves to ask their Overlord for permission to sin before they kill someone, and the highest-level Unknowns are called the El (a Hebrew name for God).
* SealedEvilInACan - Or rather, [[spoiler:sealed DNA]] in a can.
* ShootTheShaggyDog - Saeko Shinohara
* ShoutOut - G3-X's red eyes and mouth guard are apparently called the Red Eyezer and Perfecter after similar parts on ''Series/KamenRiderX''.
* SoLastSeason - The G3 proves to be largely ineffective against the Unknown because it was made to fight the Grongi from ''Series/KamenRiderKuuga''. It gets a minor upgrade, after which it is more effective, eventually destroying an Unknown with a couple of grenades. It then gets a proper, much needed MidSeasonUpgrade in G3-X, able to both give as much as it takes.
* StoneWall - G3 isn't initially effective against the Unknowns, but it definitely keeps the wearer(s) alive (in fact, the Generation Series has the best defense of all the Riders in ''Agito''). G3-X, on the other hand, is more of a LightningBruiser.
* SuperpowerLottery - [[spoiler:The various powers gained by people before they complete their evolution into an Agito]]. Frequently of the BlessedWithSuck variety. Zigzagged with [[TheHero Shouichi]]: He doesn't get any powers at all as a human other than the ability to [[MySignificanceSenseIsTingling sense when Lords are attacking]]. In exchange, he gets to be a Kamen Rider, with no ill effects besides.
* SuperPrototype - G3, as it turns out (while also a subversion - it's the only G series unit we see until G3-X comes out). The base of every G unit afterward, and stronger than the production (prototype) G3-MILD.
* TransformingMecha - Though not technically a mecha, Agito's bike transforms into a ''hoverboard''.
* UnstoppableRage - somewhere between this and SuperpoweredEvilSide is the original G3-X AI. Hikawa actually goes ''unconscious'' from the stress it puts on him, while the G3-X goes on beat up Houjo in the V-1 suit, kill an Unknown, and nearly shoot Agito.
** Agito's Burning Form opperates on this. The angrier Agito gets, the more powerful he becomes in the form.
** Agito's debut was also this, as Shouichi was controlled by pure instinct. Things would've been FAR easier if a.) Shouichi hadn't attacked G3 during their first meeting, thereby leaving a horrible first impression and b.) [[PoorCommunicationKills he actually talked in the suit]].
* TheVoiceless - Agito while transformed, for the first 2/3 of the series or so. When Shouichi senses an Unknown and is sent by pure instinct to fight, he drops what he's doing and runs off without a word, then fights equally wordlessly. More than ten episodes in, he speaks for the first time to say "Hikawa?" when G3's identity is revealed to him, and more than ten episodes later still, his bike transforming into a hoverboard (he didn't know it could do that) evokes a "what?" as suited Agito's ''second'' word. He is more talkative in Rider form near the end of the series, even saying full sentences. There are still entire extended battles fought without a word, though. Considering that a major conflict in the show kept going because of a [[PoorCommunicationKills lack of clear communication]], this became a plot point.
* WhereAreTheyNowEpilogue