Jikan no nami wo tsukamaete! (Hold on to the waves of time!) Ima sugu ni yukou yakusoku no basho. (Let's go right away to the promised place.) Genkai mugen, iza tobikome! (Limits are infinite, now jump into it!) Climax Jump!
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Ryotaro Nogami/Kamen Rider Den-O (portrayed by Takeru Satoh and Takuya Mizoguchi)
The protagonist and eponymous Kamen Rider, Ryotaro is quite possibly the unluckiest being on Earth (and a high school drop-out supporting his only other family member, his older sister Airi); every day is a parade of misfortune for him. In the middle of an unusually bad day, he's possessed by a time-travelling monster called an Imagin, meets a strange girl who tells him he's a Singularity Point, and said girl and Imagin effectively "railroad" him into becoming Den-O. Even though by his own admission he's not exceptionally strong, smart, or brave, when the chips are down his true strength appears in the form of unstoppable determination. In a way, his horrid luck could be seen as a mixed blessing, since he's been through so much that it takes a lot to really faze or hurt him. He's also very good at reading people's emotions and true feelings; Ryotaro's ultimate strength may lie in his unflappable kindness. His strong feelings towards his friends are the reason for the existence of Den-O's first Super Mode Climax Form, while the Taros work together to create the second, Liner Form. As well, Ryotaro's bond with the Taros is the reason they continue to exist after the death of Kai. As the series went on, he started to develop self-confidence, assertion, strength, and bravery, eventually being able to show himself as an independent person and a worthy hero
The Cast Showoff: Takeru Satoh portrays 1 character who's gained a total of 7 different possessed personalities (some of them by force), sings in every version of Double-Action (except Gaoh Form, Coffee Form, Climax Form, and Strike Form), his own solo song, Real-Action, and, thanks to Ryutaros, has an excuse to demonstrate his breakdancing skills.
Catchphrase: "Let's go, Everyone!" [[labelnote:Japanese]]"Minna, ikuyo!"[[/labelnote]] settled in after he gained Liner Form.
Honor Before Reason: In an early episode, Ryotaro becomes angry with Momotaros for (unwittingly) aiding a robber. Later on he refuses to let Momo fight until he apologizes and promises never to let anything like it happen again. He does this in the middle of a battle where the Imagin is beating him senseless.
In The Style Of: In addition to singing in all five standard versions of Double-Action, he gains a solo, Rock 'n Roll theme called Real-Action about the same time he gains Liner Form.
Locked Out of the Loop: The fact that he's a Singularity Point plays a major role in Sakurai and Airi's plans, which Ryotaro himself doesn't learn until the next-to-last episode, and only then by deceiving a past version of Airi.
The Nth Doctor: After Takeru Satoh left the cast following the third movie, Takuya Mizoguchi (who played 11-year-old Ryotaro in the first) took over the role in the fourth with a Hand Wave about how changes to the past do this sort of thing all the time.
Parental Abandonment: Ryotaro's parents died when he was young, leaving his sister and grandmother to raise him.
Ripple-Effect-Proof Memory: One of the defining characteristics of a Singularity Point. However, a Plot Hole opened when it was revealed in the finale that Sakurai and Airi's plan erased his memory of their daughter in the past. It was one of Sakurai's cards that erased his memory, but he regained it, for the most part, upon meeting Yuto.
Time Shifted Actor: Aside from Takeru Sato and Takuya Mizoguchi's meeting in the first movie, the ending of the third movie shows Kotaro arriving in his timeline, and meeting up with Ryotaro as an old man (who was only seen from the back).
Took a Level in Badass: After he achieves Liner Form, he comes over as much more serious and determined than at the start of the series.
Swiss ArmyBFS: DenKamen Sword; like the DenGasher, it can emulate whatever Den-O weapon the Liner Form is imitating.
Cool Sword: DenGasher Sword Mode (used a couple of times in Plat Form and once in Liner Form in Final Countdown when he lost the DenKamen Sword)
You Gotta Have Some Color In Your Hair: Any possession by an Imagin changes his hairstyle and adds a touch of color. This even applies when possessed by the evil Ghost Imagin in Final Countdown, turning his hair entirely white.
Hana Sakurai/Kohana (portrayed by Yuriko Shiratori/Tamaki Matsumoto)
The mysterious young woman who drags Ryotaro into the battle with the Imagin, providing him with the Den-O Belt and DenLiner. Hana is the only survivor of a future timeline wiped out by the Imagin, saved only by the fact that she's a Singularity Point like Ryotaro. Because of this, she has a strong dedication to protecting the timeline and a fierce hatred for Imagin, a stance which gradually changes as she interacts with the Taros. She helps Ryotaro investigate the Imagin, and works to keep the Taros in line, usually berating (or Dope Punching) Momo for being violent or Ura for chasing skirt. As a new connection to Hana's destroyed time forms, she finds herself de-aged into a ten-year-old whom Ryotaro nicknames Kohana (literally "Little Hana") and tries to pass off as Hana's little sister to Muggles. Late in the series it's revealed that Hana herself is the key to the future timeline as the Junction Point between present and future, as well as Yuto and Airi's daughter and thus Ryotaro's niece.
Action Girl: In a case different from the role of most female leads in Kamen Rider, she actually accomplishes things throughout the show, and isn't even afraid of taking on numerous martial artists at once in a fight.
The DenLiner's waitress/stewardess, Naomi runs the dining car and serves coffee to the Den-O team. She's energetic and unflappable, sticking to her philosophy of only making coffee. She's great friends with the Imagin, often playing with Ryutaros; it was Naomi who named him in the first place. Despite appearing to be little more than a ditzy waitress, Naomi is a fixture of the DenLiner and has demonstrated resourcefulness and resolve when things look bad.
Big Damn Heroes: Rescues Kintaros and Urataros in the past, and brings them alongside Sieg to the present for the final battle.
Cordon Bleugh Chef: She puts salt, pepper, flour, and wasabi in her coffee. The only people who like it are the Imagin.
Genki Girl: Usually seen with lots of energy and a smile on her face.
The mysterious man who operates the DenLiner and works with Hana to protect the timeline. He occasionally imparts cryptic information to Ryotaro, but is primarily concerned with the safety of the DenLiner and its passengers, leaving the Imagin to Den-O. Mostly laid-back, he can be harsh towards those who break the train's rules, bother his passengers, or attempt to disrupt time. His "hobby" is eating piled foods (such as rice, flan, or pudding) with a flag on top, attempting to take as many bites as possible before the flag falls. Later in the series the cast meets the Station Master who runs the KingLiner and is the Owner's rival in the food-flag "game".
Acting for Two: Ishimaru plays both the Owner and the Station Master; whenever the resemblance is commented upon in-series, the Owner says it's just the observer's imagination and insists that they're quite different.
Berserk Button: Mess with the rules of the DenLiner and the normally mellow Owner might slap you with a Denial of Passage ticket.
Inexplicably Awesome: He displays some strange supernatural abilities, such as destroying an electrically charged cell with a paper flag, having immunity to Ryuutaros' mind control and running so fast he can keep up with the Den-Liner! The character himself receives no backstory whatsoever.
Running Gag: Because of the above trope, characters who meet both the Owner and Station Master at the same time actually confuse them for twins.
Momotaros/Kamen Rider Den-O Sword Form (voiced by Toshihiko Seki; suit actor Seiji Takaiwa)
The first Imagin to possess Ryotaro, he resembles the red oni from the legend of Momotaro, and his abilities (including those as Den-O Sword Form) are drawn from the same story. Hotblooded and hot-headed, Momotaros is always spoiling for a fight whether with enemy Imagin or with whomever happens to tick him off at the moment. Initially annoyed when he realized he possessed a Singularity Point, the then-unnamed Imagin sided with Ryotaro when they were attacked by the Bat Imagin on the basis that if Ryotaro died, so did he. After the battle, Ryotaro gave the red oni-esque Imagin the name "Momotaros" after the legend of Momotaro the Peach Boy. While a brash Boisterous Bruiser might seem at odds with Ryotaro's normal personality, it's his eccentricies like posing, pre-battle speeches and calling his attacks that makes Den-O resemble more traditional Kamen Riders. Despite his rough attitude, Momotaros is fiercely loyal to his teammates, and seeks to improve Ryotaro by toughening him up and improving his "bad taste".
Anime Hair: A side effect on people possessed by him.
Character Tics: Tends to do bombastic poses, most famously the "Ore, sanjou!" pose which consist of pointing at himself on the Ore, then standing with his arms spread at sanjou!. Also, Blade on the shoulder when he's Den-O.
In Onigashima Battleship, while the other Taros were also stranded (in the 30's-40's), they manage to stay together, but Momo, all alone, gets stuck in the distant past, in the very period where the Oni were waging their war against the humans.
In Episode Red, he gets thrown overboard when the DenLiner was out of control, getting stranded four months before the events of the movie.
Four Is Death: Lampshades it when Ryotaro points out that he skipped over number 4 in his attack-calling; Momo claims that he did it because it's cool to skip four, then proceeds to count to ten, jumping from three to five.
Literal Asskicking: He's fond of doing this to his opponents, whether it involves his actual feet or even his sword.
The Nicknamer: Even moreso than the rest of the cast. He calls Urataros "Kame" (Turtle), Kintaros "Kuma" (Bear), Ryutaros "Kozo" (Brat) or "Hanatare Kozo" (Snot-Nosed Brat), Hana "Hanakuso Onna" (Nosy Woman), Sieg "Chicken Wings", Deneb "Odebu" (Tubby) and Teddy "Tendon". He also has a habit of tacking "Yaro" (a rude version of "you", usually rendered as "Jerk" or "Bastard") onto the end of most of his nicknames; in fact, he only refers to enemy Imagin by their species and with "Yaro" tacked on the end, as in "Mogura Yaro" (Mole Jerk)
Really Gets Around: Thanks to crossovers and other hijinks, Momo has the distinction of having possessed no less than four different Kamen Riders: Den-O, Decade, Kiva, and Kuuga, though in the case of the latter two he only possessed them as civilians and never used their unique Rider powers.
In Let's Go Kamen Rider, he possesses Ankh while he's already possessing the dead body of Shingo Izumi. He also possessed Eiji in a recent stage show.
Red Eyes, Take Warning: People possessed by Imagin have their eyes change color to match; Momo, obviously, makes them go red.
Translation Convention: Momo's catchphrase "Ore, sanjou!" is a rough way of saying "I have arrived!" (fitting for the Train-themed rider), "Here I am!", or "Here I come!", but most fans just leave it in Japanese because there's no translation that sounds quite right.
Urataros/Kamen Rider Den-O Rod Form (voiced by Koji Yusa; suit actor Eitoku)
The second Imagin to possess Ryotaro, his appearance and abilities (both as himself and Den-O Rod Form) come from Ryotaro's mental image of the mythical Urashima Taro. In stark contrast to the fight-happy Momotaros, Urataros is laid-back, non-confrontational, and clever. A Consummate Liar, Ura can talk anyone into just about anything; since he's an enthusiastic skirt-chaser, he can often be found using his talent to charm the socks off of any cute girls he meets while possessing Ryotaro. He was aware that Ryotaro was a Singularity Point, and willingly possessed him in the hopes of extending his lifespan and meeting women. Because of his non-confrontational nature, Rod Form is the least used of Den-O's forms, but Ura's skills come in handy when they need to gather information about a rogue Imagin - that is, provided Hana can keep his mind on the task at hand...
The Nicknamer: Calls Momotaros "Sempai" (because Momo insisted) and refers to most people either affectionately ("Kin-chan", "Naomi-chan") unless they've earned his respect ("Hana-san", "Airi-san"). He calls Yuto "Boku-chan" (a very childish way of saying "me") as a reference to the young man's selfish nature.
Kintaros/Kamen Rider Den-O Ax Form (voiced by Masaki Terasoma; suit actor Jiro Okamoto)
The third Imagin to possess Ryotaro, inspired by the legend of Kintaro, which also extends to Den-O Ax Form. Initially contracted to a sickly martial artist named Masaru Honjou, whose wish to achieve the "ultimate karate". Much to Ryotaro and Hana's surprise, the Imagin actually stuck to the contract, training Honjou's body while in control and showing no interest in disrupting time. Ryotaro recognizes his nobility after he's mortally wounded protecting Honjou from the Rhino Imagin and offers a contract in order to save his life. The strong, silent Kintaros usually sleeps the day away until someone presses his button by saying the word "Nakeru" (Japanese for "cry")...or anything even remotely sounding like "Nakeru", which causes him to possess Ryotaro instantly, unceremoniously booting out anyone already possessing him. Out of all the Taros, Kin is the nicest and friendliest, showing an uncharacteristic amount of real emotion for an Imagin.
Catch Phrase: "My strength has made you cry. Wipe your tears with this!" [[labelnote:Japanese]]"Ore no tsuyosa ni omae ga naita! Namida wa kore de fuitoke!"[[/labelnote]] Sometimes shortened to just "My strength has made you cry!" or just "You cried!" [[labelnote:Japanese]]"Nakerude!"[[/labelnote]]
Even Evil Has Standards: In his introductory episode, Kintaros is willing to fight anyone who stands in his way, but he will not cause collateral damage or hurt women. Plus, he was willing to catch criminals for the police in the following episode.
Hammer Space: He can pull tissues out of thin air, apparently.
Heavy Sleeper: And narcoleptic to boot; since he's a bear, this presumably represents hibernation. The only way to wake him up is by activating his Berserk Button.
Honor Before Reason: Demonstrated in his A Day in the Limelight two-parter where he puts aside fighting the Monster of the Week in order to prove to a young girl that she's wrong in thinking her father hates her, and he's willing to be kicked off the DenLiner in order to prove it. Thankfully, he's right about the father, and the changes Kintaros caused mean the Imagin never became a threat, so Owner let him stay.
Implausible Deniability: When Owner once said that Kintaros' snoring is a problem, Kintaros wakes up just to deny it.
Ryutaros/Kamen Rider Den-O Gun Form (voiced by Kenichi Suzumura; suit actor Toshihiro Ogura)
The fourth Imagin to possess Ryotaro and the last member of the "Taros", making up the core team. Appearing last, he was actually the second to possess Ryotaro, as revealed in flashbacks to Urataros' debut episode, and subsequently buried himself deep in Ryotaro's psyche, only being revealed during a hypnosis session instigated by Miura. At first he wants to kill Ryotaro, having been given an unrevokable Liner Pass and told that he can take over the DenLiner if he destroys Den-O. However, he falls in love with Airi and abandons his mission when the others point out that killing her brother would upset her. Childish and willful, Ryuta is the strongest of the Taros, and usually can't be "booted" from Ryotaro's body unless Momo, Ura, and Kin work together. His brash attitude causes a lot of problems normally and in battle as Gun Form, causing lots of collateral damage. He loves animals and dancing, and has the power to make people dance with him by snapping his fingers. His crush on Airi and bad advice from Kintaros caused him to develop a jealous hatred towards Yuto, which causes even more problems.
Break the Cutie: Near the end of the series, Ryutaros gets confronted by Kai who nearly made Ryuutaros destroy DenLiner, and at the same time, lose his affection for Airi when Airi saw Ryutaros possesed Ryotaro and knew that he wasn't her brother. Made all the more worse because Ryutaros was trying to give Airi a picture he made of her and couldn't. Poor guy.
Catch Phrase: "Mind if I (something)?", most commonly "beat you" or "end it", followed by "Can't hear the answer!" [[labelnote:Japanese]]"Kotae wa kiitenai!"[[/labelnote]]
Cheshire Cat Grin: If he possessed Ryotaro and he holds a grin, RUN. If you don't, then there is a chance that he is going to chase you down with his dance posse and will not stop until he catches you!
Funny Background Event: He's pretty much a walking one. No matter how serious the scene happening in the foreground is, if Ryoutaros is around, more often than not he's dancing around in the background or doing something childish like drawing pictures. Naomi is known to join him on occasion.
Laser Guided Tykebomb: Kai told him to kill Ryotaro and gain control of the DenLiner. Ryutaros decided not to do so due to his love for Airi.
Love Redeems: Decides not to kill Ryotaro after realizing that his death would make Airi cry.
Murder the Hypotenuse: His response to learning that Airi loves Sakurai is to go after Yuto and try to kill him. It doesn't help that Kintaros advised him how to win Airi's heart.
Nice Hat: Whenever he's possessing someone to go along with the wavy bangs and purple streak in the hair.
The Nicknamer: Calls Urataros "Kame-chan" and Kintaros "Kuma-chan". Since Momotaros isn't based on an animal, Ryuta just calls him "Momotaros" without Honorifics, which annoys Momo.
Pet the Dog: The first indication that Ryuta has good qualities is when he realizes that the Owl Imagin's rampage in the past will cause the puppy cared for by its contractor to die, and resolves to fight the Imagin full-force.
Before that, he confronted the Dance Posse and asked them if they were the reason that the animals being fed in the park got frightened.
Psychopathic Imagin Child: Whenever he possesses Ryotaro, he somehow holds some kind of glee in chasing people down for no apparent reason. The biggest offender would be in Climax Deka, where he starts whipping out the handcuffs to any person who just looks like he'd be part in an Evil Organization.
Useful Notes On Japanese Culture: Conflicting information suggests that Ryuta is modeled on Tatsu no Ko Taro (Taro the Dragon Boy), or simply on Ryotaro's mental image of dragons in general. References in Imagin Anime and official books like IMAGINE: Detail of Heroes lend credence to the former.
Sieg/Kamen Rider Den-O Wing Form (voiced by Shinichiro Miki; suit actor Naoki Nagase)
An arrogant swan Imagin, inspired by the story "Swan Lake" and the character of Prince Siegfried in specific. He possessed a rich heiress, but because she was pregnant at the time, the contract passed to her unborn son. Sieg first came into being following the child's birth, referring to mother and child as his family. He was brought to the DenLiner crew's attention when Ryutaros brought him onto the train. His arrogant demeanor rubbed everyone the wrong way until Hana punched some sense into him, at which point he began calling her "Princess" and started gradually referring to the others as family rather than servants. He allows Den-O to assume the exceptionally powerful Wing Form, but because his contract was formed with a child, whose memory isn't as strong as an adult's, he begins "fading". Ryotaro discovers a "loophole" in that Sieg's contract with the heiress was still active, allowing him to travel to the past and exist peacefully; despite this development, he shows up in critical moments such as the series finale and the movies.
Catch Phrase: "Advent! To the top!" [[labelnote: Japanese]]"Korin! Man wo Jishite!"[[/labelnote]]
Cultured Badass: He's based on a prince, and his form is the most powerful of Den-O's basic forms.
Deus Exit Machina: Wing Form is Den-O's most powerful basic form, and writers have made sure that his use was a rarity.
The situation is inverted in Ore, Tanjou! where Sieg is the only Imagin available for a good portion of the movie (Ura and Kin were held captive, Ryuta was temporarily convinced by Gaoh to his side, and Momo couldn't synchronize with Ryotaro because the latter has amnesia). Played straight again later, where Sieg is the only Den-O that isn't present in the movie's climax, although no explanation was given for that since Yuuto could have just kidnapped a Sieg-possessed Ryotaro for the battle except perhaps being injured after getting hit by Gaoh's Tyrant Clash as Den-O.
Incredible Shrinking Man: Has the power to make people shrink to action figure-size by saying "Bow your head!"[[labelnote: Japanese]]"Zu ga Takai!", lit. "Your head is high!"[[/labelnote]] The Imagin Anime gives him "Super Bow Your Head", which shrinks the whole world.
Nerf: An in-universe one, his power and memory is weakened considerably due to his contract holder being a child. Taking into account how strong he still is, he would be unbelievably powerful if properly contracted to an adult.
Ryotaro's older sister and the owner of the Milk Dipper library cafe. She was forced to raise help Ryotaro after the death of their parents and thus often seems wise beyond her years. She's also very close to Ryotaro, worrying about his well-being and trying to help out with health drinks and herbal concoctions. The beautiful Airi enjoys good business mostly thanks to the horde of lovestruck men who pack the shop from opening to closing. For her part, Airi remains completely oblivious, her only passions seeming to be stargazing and brewing the perfect cup of coffee. One year prior to the series' start, Airi's fiance Yuto Sakurai vanished a month before the wedding; initially Ryotaro thought she hid her pain behind a smile, but to his great concern she seems to have completely forgotten about Sakurai, not even remembering why she has his beloved telescope in the shop (but still gazing at it fondly) and not realizing that the pocketwatch he gave her rests beneath it. Late in the series, Ryotaro discovers that Airi is in fact perfectly aware of just about everything that's happened up to that point, including Ryotaro being Den-O, and in fact helped orchestrate the whole thing along with Sakurai in order to protect the Junction Point from the Imagin.
Beware the Nice Ones: In one episode, Ryotaro offends Airi by calling in a hazmat team to dispose of one of her "healthy" concoctions; her response is to throw things at him, culminating in his own bicycle.
Distressed Damsel: Episode Red invokes this, since this is the condition of the contract between the Piggies Imagin and the Victim of the Movie: to put Airi in a dangerous situation so that he would be the one to rescue her, also invoking Rescue Romance.
Yamato Nadeshiko: Pretty, caring, an excellent cook, and completely unflappable. Upon being told that Ryotaro was being held hostage by an armed robber, her immediate reaction was to go back to preparing coffee. The wisdom part is thus:She's been in on her fiancée's plan from the beginning, and allowed her own memories to be altered in order to protect the Junction Point, their future daughter Hana. And she's known from the start that "Ryo-chan" was Den-O, and that his friend Yuuto is the time-displaced teenage version of her fiancée.
Seigi Ozaki (portrayed by Akira Nagata)
One of the Milk Dipper regulars, Ozaki is a journalist for a Kasutori Magazine who's always on the lookout for a new scoop. He's also a major flirt, chasing women since a crush on his first-grade teacher and using his job to try and pick up chicks. However, he's most devoted to chasing Airi, trying to impress her with his connections while sparring with Miura. He's friendly towards Ryotaro, styling himself as the younger boy's future brother-in-law and sometimes sharing stories that, unbeknownst to him, reveal information about Imagin attacks.
A self-proclaimed "super counselor" and Milk Dipper regular who feuds with Ozaki for Airi's affection, but is more introverted. Ozaki often tries to undermine Miura by making his interest in the occult look like superstitious nonsense, while Miura counters by pointing out Ozaki's wandering eye. He's also nice towards Ryotaro, and shows a good deal of concern for his well-being. After witnessing a battle between Momo and Ura for control of Ryotaro's body, Miura becomes convinced that Ryotaro is possessed and tries to help exorcise him, only to accidentally reveal the existence of Ryutaros.
Ignored Expert: In regards to the Imagin, at least until Airi and Ozaki meet them in Climax Deka.
Because of the time-traveling nature of Kamen Rider Den-O, two versions of Yuto Sakurai exist as independent and distinct characters. Here, as in most media, they will be distinguished by their names, "Yuto" referring to the younger version and "Sakurai" to the older.
Yuto (portrayed by Yuichi Nakamura)
The teenaged version of Yuto Sakurai, as well as the warrior Kamen Rider Zeronos and the partner of the Imagin Deneb. Yuto initially appears after Ryotaro gets too close to Sakurai, warning the soft-hearted young man not to interfere, believing that protecting the timestream is different from protecting individuals, unlike Ryotaro. The brash, hot-tempered Yuto stands greatly at odds with Ryotaro's memories of a gentle, kindly, brotherly Yuto Sakurai, but according to Owner, the two are indeed one and the same. He also acts childish at times, preferring his coffee overloaded with sugar, despising shiitake, and enacting comedic violence upon Deneb whenever the Imagin annoys him. Contact with Ryotaro and the DenLiner crew tempers Yuto's harsh personality as well as maturing him. Ryotaro (and the audience) eventually learn that the Zeronos powers operate by "burning" the memories people have for Sakurai, explaining why nobody except Ryotaro remembers him. After using up all the original Zeronos Cards, Sakurai offers him more, along with a new card that turns Altair Form into the Super Mode Zero Form, which is fueled by memories of Yuto rather than Sakurai. The disappearance of Sakurai at the end of the series leaves Yuto with a new future to discover, which he gladly undertakes alongside Deneb.
Anger Born of Worry: In the finale, upon seeing Deneb alive again, Yuuto was about to seemingly attack him again, only to fall into tears in Deneb's arms.
Catch Phrase: "Let me say this to start: I'm pr-e-tty strong!" [[labelnote:Japanese]]"Saisho ni itte oku! Ore wa ka~na~ri tsuyoi!"[[/labelnote]]. On a couple of occasions, Yuto replaces the second part with "I'm pretty ticked off!"
Deus Exit Machina: Hospitalized, and therefore absent, for a good portion of Final Countdown after Taking the Bullet for Kohana, but reappears just in time for the climax. In Onigashima Battleship, the alteration of the timeline causes him to be erased from reality, again.
Did Not Get the Girl: At least not yet anyway. Much of the Episode Red movie dealt with the fact that Airi can't love the current Yuto the same way she did Sakurai (although the existence of Hana in a younger form implies that the two will eventually get together; presumably once Yuto matures into someone more like Sakurai).
Significant Reference Date: When Yuto first makes his debut in the series, he's holding a ticket for May 27th, 2007. Go on, guess the airdate of that episode.
Sweet Tooth: Yuto really likes his coffee sweet, to the point where he puts way too much sugar in.
Useful Notes On Japanese Culture: Zeronos has a running theme of Tanabata, with Altair Form representing Hikoboshi the cowherd (hence the cow-head DenKamen) and Vega Form representing Orihime the weaver (hence the spindle DenKamen). This form also carries over to Yuto and Airi.
Airi's fiance and Ryotaro's future brother-in-law, Sakurai was a gentle, kind-hearted man with a passion for astronomy he shared with Airi. The two were very much in love, and Sakurai treated Ryotaro like the little brother he never had; thus, Ryotaro's surprise when Sakurai disappeared just before the wedding is understandable, as is his confusion at the fact that nobody seems to remember his existence. Several times in the early part of the series, a cloaked man appears watching Den-O's battles in the past and checking a pocketwatch; by accident, Ryotaro bumps into the man and recognizes him as Sakurai. He attempts to track down the man, only to be warned off by Yuto. Eventually Ryotaro learns that Sakurai discovered the ZeroLiner and learned of the Imagin. In order to protect his and Airi's daughter, the Junction Point, Sakurai engineered his own disappearance before handing off the Zeronos Belt, ZeroLiner, and his partner Deneb to his teenaged self, while he used himself as bait for the Imagin in the past. Late in the series, Sakurai appears and becomes Zeronos Altair Form, fighting alongside Ryotaro and Yuto in one battle. As Yuto uses the last of the Zeronos Cards, Sakurai vanishes from the timeline, though Airi remains confident that he'll return some day.
What the Hell, Hero?: Deneb tells off Sakurai for making Yuto use the Zeronos cards, even culminating in Deneb throwing Sakurai out of the ZeroLiner.
Deneb/Kamen Rider Zeronos (and New Den-O) Vega Form (voiced by Hochu Otsuka; suit actor Yoshifumi Oshikawa)
Yuto Sakurai's Imagin partner, inspired by the legend of Benkei and allowing Yuto to transform Zeronos into Vega Form. Deneb is kind-hearted but somewhat on the thick side, his polite friendliness contrasting greatly with Yuto's loud, rude attitude. He often tries to better Yuto, encouraging him to be nicer or to work alongside Ryotaro as an ally rather than viewing the DenLiner team as a hindrance. Occasionally Deneb will even possess Yuto and run around being friendly, doing good deeds, and passing out Deneb Candy in order to win friends for the young man, but this invariably results in a beating from Yuto once he regains control. Deneb is later revealed to be contracted to Sakurai, having joined the man after seeing his selfless battle against the Imagin, and their contract retroactively applying to Yuto as well. Since the Zeronos Cards erase peoples' memories of Yuto, Deneb tries to make friends for him in order to remove the burden of isolation. When Kai manages to kill Yuto in the past, this causes a timeline alteration that results in Deneb being contracted to Ryotaro, but this is eventually undone and things return to normal.
Battle Butler: Does many things butlers do (shopping for food, cooking for Yuto, cleaning the ZeroLiner), has a very humble attitude, and assists Yuto in battle.
Beware the Silly Ones: Despite being Yuto's ditzy comedic foil and the nicest guy in the series, his few fights as Zeronos and New Den-O Vega Form show he's actually much better at fighting than Yuuto (who's not bad himself).
Catch Phrase: Usually begins with Yuto's "Let me say this to start!" [[labelnote:Japanese]]"Saisho ni itte oku!"[[/labelnote]], only to mess it up with an honest fact that bewilders everyone around him; he uses "The face on my chest is just for show" [[labelnote:Japanese]]"Mune no kao ga kazari da!"[[/labelnote]] a couple of times. He also says "Take care of Yuto!"[[labelnote:Japanese]]"Yuto o yoroshiku!"[[/labelnote]] both in conjunction with the first phrase and on its own.
Catch Phrase: "I have the face for it, don't I?" [[labelnote:Japanese]]Ore, sōiu kao shiteru daro?[[/labelnote]]
Fate Worse Than Death: When the Death Imagin is destroyed in the final battle, it takes his remaining memories with it. Despite being a Singularity Point, he'd destroyed so many of his past selves that he's completely erased from time due to this.
Faux Affably Evil: His manner of speech and actions are normally realitively unvillainous, which serves to make him far more creepy as a result. Note, he keeps this even when letting loose an entire army of Imagin on the city and preparing to open a time rift to erase an entire area and everyone in it from time.
Giggling Villain: Frequently seen with a creepy grin on his face and indulge himself in maniacal laughs.
The Man Behind the Man: Is the driving force behind the Imagin but doesn't appear in person until close to the end.
Psychopathic Manchild: He acts rather childish most of the time. Despite this, he's completely insane and willing to erase entire areas from time without any regard for life.
Time Master: Unlike others, he's able to travel through time without a Time Train. He's also able to tear open a hole in time and let loose an energy burst capable of erasing everything and everyone in the blast zone except himself from time.
Villainous Breakdown: Gets progressively more insane and unstable as the series goes on. But after discovering for that Sakurai isn't the Junction Point as he previously believed, he snaps. He tears apart the black calendar he'd been using to plan his attacks, gives all his remaining Imagin physical form, channels everything he's got left into the Death Imagin for an all-out attack on Tokyo. He then proceeds to try and completely erase the entire area from time despite his army still being present.
You Have Failed Me: pulls this on Ryutaros after the latter couldn't bring himself to kill Ryotaro. There's a good reason Ryutaros is so scared of him.
The series' Monster of the Week creatures, Imagin are time-traveling spirits from a destroyed alternate future, with the goal of changing the past to bring their future back into existence. Initially they manifest as golden balls of light, but upon possessing a human victim (in a burst of energy and sand) they take a form from that person's imagination, drawing upon their mental image of various stories, legends, or folk tales. Once possessing a victim, Imagin offer them a "wish", twisting that person's desires to destructive ends. Once the wish is granted (by whatever loose definition the Imagin is using), a portal opens to the past via a particularly strong memory of victim's. From there the Imagin goes back in time and runs rampant in an attempt to alter the timeline. Upon defeat, particularly poweful Imagin will revive as giant monsters called "Gigandeaths". The Imagin initially seem independent of one another and unorganized, but the appearance of Kai reveals the truth. Urataros later explains to Ryotaro and Hana that all Imagin hear Kai's orders in their heads, but it's up to them whether they obey or not. Though Kai's death also destroys most of the Imagin, the Taros, Sieg, and Deneb hang on thanks to the bonds of friendship formed with Ryotaro and Yuto, while several antagonistic Imagin remain through unknown reasons and menace the crew in the various sequel movies).
Animal Motifs: as part of their fables and fairy tales theme designs.
Be Careful What You Wish For: Most Imagin operate like this; in an early episode, the Crow Imagin interprets its victim's wish to forget her ex-fiance by destroying anything playing "Spring" from the Four Seasons Concerto, since she still owned a pendant he gave her that played the song.
Catch Phrase: "Say your wish. I will grant any wish." [[labelnote:Japanese]]"Omae no nozomi o ie. Donna nozomi mo kanaete yarou."[[/labelnote]]
Jackass Genie: A few, particularly the Jellyfish Imagin, which twisted the victim's wish to find his late girlfriend's time capsule into meaning any old time capsule, and mercilessly beat the poor man when he didn't go along with it.
Legion of Doom: Kai's army in the finale, consisting of almost every Imagin that Yuuto and Ryotaro ever fought.
Literal Genie: The Armadillo Imagin interprets its victim's wish to "cut ties" with the Yakuza literally - it walks up to his bosses, cuts their neckties in half, and says "Contract fulfilled!"
Meaningful Name: "Imagin" is derived from the words "imagine", "djinn"(the arabic word for genie), "Â�今" ("ima", Japanese for "now"), and "Â�人" ("jin", Japanese for "person").
Gaoh/Kamen Rider Gaoh (portrayed by Hiroyuki Watanabe; suit actor Yoshifumi Oshikawa)
The Big Bad of the first movie, Gaoh is a thief-king who, along with a gang of rogue Imagin following him, targets time trains. After getting Ryotaro to chase an Imagin to 2000, he stole the DenLiner in order to go further back in time, as well as to obtain the Master Pass from Owner, which allows its user to go to any time period they wish. Upon arriving in the Sengoku period, he manipulates Yukimura Sanada into helping him uncover the GaohLiner, a time train originally named "God's Train" due to its ability to control time, even being able to erase Singularity Points. In the end, Gaoh is brought down by the combined efforts of all four Den-Os (collected from various points in time by Yuto) and Zeronos.
Death by Genre Savviness: doesn't wait for Sword Form to finish charging up his Finishing Move, going in for the kill, except that Momo actually anticipated this; at close proximity, Gaoh was left vulnerable to Extreme Slash, Special Version.
Why Don't Ya Just Shoot Him?: After uncovering the GaohLiner, Gaoh heads to Ryotaro's birthday with the intent of erasing the day from existence, therefore destroying Ryotaro AND Den-O.
Villain Song: While he doesn't sing it in the movie itself, Double Action Gaoh Form is added to the director's cut of the movie. His is also the only solo version of the song.
Characters Introduced in Climax Deka
Kazuya Suzuki (portrayed by Ryota Murai)
A police detective, Suzuki is assigned to work with the DenLiner Police in order to investigate the rash of Imagin and Fangire-related crimes that have been on the rise lately. Initially he doesn't mesh with the team at all, being freaked out by the Imagin and blindly pursuing the criminal Seiya Kuroki. Eventually they learn that his father Kazuma Suzuki (portrayed by Ryoji Morimoto) was a great policeman and he just wants to live up to his example.
This Is Something He's Got to Do Himself: Though Hana could kick Kuroki's butt five ways from Sunday, she lets Suzuki collar him, even if it does mean a drawn-out fight where he takes his share of lumps.
"Well Done, Son!" Guy: His goal is to follow in his father's footsteps. Amusingly, during their trip to 1986 to give Kazuya closure, we hear his father remark that he wants better for his son.
What the Hell, Hero?: Momo chews him out for foolishly infiltrating Negataros' HQ without any backup, leading to him getting captured. Granted, it was because the rescue attempt mounted by the DenLiner Police nearly cost them their lives.
Negataros/Kamen Rider Nega Den-O (voiced by Hikaru Midorikawa; suit actor Jiro Okamoto)
The Big Bad of Climax Deka, Negataros is a rogue Imagin who survived Kai's death and struck out on his own, attempting to found an Evil Organization. In his quest, he recruited human criminals as well as Imagin and Fangire, and eventually drew the DenLiner Police's notice when he stole Owner's spare Rider Pass. In the final battle, he used the Pass to transform into Nega Den-O, but was taken down by the combined efforts of the DenLiner crew and Kamen Rider Kiva.
Ascended Extra: Negataros gets a great deal of expansion in Den-O's S.I.C. Hero Saga story, a text series published in Hobby Japan Magazine. The story, an alternate version of Climax Deka, has Negataros travel to 1971 and join forces with Shocker, the evil organization of the original Kamen Rider, which leads Ryotaro and Yuto to pursue and eventually team up with the Showa Kamen Riders.
Evil Twin: Of Momotaros, as well as Den-O Sword Form.
Finishing Move: As Nega Den-O, he can use any of Den-O's primary four finishers, though in Climax Deka we only see the Nega Wild Shot. The arcade game Ganbaride shows the Negastreme Slash, as well as giving Negataros himself a move that combines all four finishers, called Hell's Quartet.
Kotaro Nogami/Kamen Rider NEW Den-O (portrayed by Dori Sakurada; suit actor Seiji Takaiwa for Final Countdown, Makoto Ito for following films)
Ryotaro's Grandkid From The Future. He grew up listening to stories of Ryotaro's exploits from Owner, and eventually became the new Den-O along with his partner Imagin Teddy. The smug, arrogant Kotaro looks down on Ryotaro and the Taros, thinking them to be weak fools who could barely get the job done, and stepping in to take over as the protector of the timeline. However, after fighting alongside the younger Ryotaro and his allies, Kotaro gained an honest respect for his grandfather and mellowed out a good deal.
Break the Haughty: Momotaros has a talk with Kotaro that makes him more understanding of his supposedly "weak" grandfather.
Catch Phrase: "My strength is *snaps fingers twice* the real thing.".
Character Tics: Snapping his fingers. In Final Countdown, he has Teddy set up a countdown of how long it'll take him to defeat an opponent; as a show of his arrogance it tends to be a low number, always below 30 seconds. The real sign that he's matured is when Teddy asks for a count against Shiro and Kotaro replies "The real battle starts at zero!"
Distressed Dude: His capture is an important part of Onigashima Battleship.
Grandkid From The Future: He's a strange case, seeing as how Ryotaro never had any romantic interests within the series; early press on the Cho Den-O Trilogy implied that his father would appear, but this turned out to be false.
Powers via Possession: Averted with Strike Form, but played straight with Vega Form needing Deneb to possess Kotaro.
Real Life Writes the Plot: Sort of. One of the big reasons they switched from Ryotaro to Kotaro is because Ryotaro's actor, Takeru Satoh, made it big and Toei couldn't really afford his agency's set salary (despite Takeru always saying that he loved playing Ryotaro). This is also the reason why Takuya Mizoguchi replaced Satoh as Ryotaro from The Onigashima Battleship onwards.
Rearrange the Song: Double-Action Strike Form (rock and roll), finally introduced in the Chou Den-O Trilogy.
Cool Sword: Momotaken (Momotaros in Let's Go Kamen Rider)
Swiss-Army Weapon: Like his Grandpa, Kotaro has his own DenGasher that can be assembled in any mode.
Blade on a Stick: Naginata Mode (Vega Form, when Deneb possesses him in Onigashima Battleship)
Cool Sword: Sword Mode (Strike Form, when Teddy is fighting alongside him)
Teddy/Neotaros (voiced by Daisuke Ono; suit actor Shinichi Kaneda)
Kotaro's partner Imagin, Teddy is quiet, polite, and reserved. Unlike the other heroic Imagin who possess their contractors, he assumes the form of a two-handed sword dubbed the MacheTeddy in order to aid Kotaro in battle. He attempts to subdue Kotaro's brashness, and often ends up apologizing to the DenLiner team after the young man leaves the room. His capture while attempting to spy on Shiro gives the first indication that Kotaro might have a softer side, and the two are friends and partners despite their differing personalities and the master/servant relationship they seem to exhibit.
Weapon Tombstone: In Let's Go Kamen Riders, Teddie gets killed in the past trying to protect the Rider Scouts from Shocker. The scouts plant his remains, MacheTeddy, in one of their hideouts, in order for the Riders in the future to find the Time Capsule buried underneath.
Shiro/Kamen Rider Yuuki Hijack Form (portrayed by Yuki Matsumura; suit actor Kazutoshi Yokoyama)
The primary antagonist of Final Countdown, Shiro was a man from the Edo period who lost Sora, the love of his life, and was unable to move on. After dying, he discovered the Ghost Train and plotted to reverse the worlds of the living and the dead, bringing Sora back to life no matter the cost. He kidnapped Ryotaro in order to further his goals, but eventually had to personally enter battle as Yuuki Hijack Form.
Affably Evil: While Ryotaro is virtually his prisoner, Shiro initially treats him in a civil manner, at least until Ryotaro starts showing signs of breaking free of Shiro's control.
Reiji Kurosaki/Kamen Rider G Den-O (portrayed by Yuta Furukawa, suit actor Norihito Itō)
A member of the G-Men, Kurosaki uses the artificial Imagin Eve to protect the timestream as Kamen Rider G Den-O. He initially appears chasing Daiki Kaitou/Kamen Rider DiEnd, who was attempting to cause a Time Paradox by killing his past self, but then he arrests the Taros as well, Eve claiming that their mucking about time with the DenLiner will only cause trouble. While he pursues Kaitou, the DenLiner crew tries to sort out the situation and figure out what Kaitou's overall goal is in the incident.
Awesomeness by Analysis: Eve analysizes the opponent and can give G Den-O a command of where to attack next with great effect and does the same with his Perfect Weapon to counter finishers. However, this only works if he's facing one attack at once. When Eve takes over as G Den-O and goes Ax-Crazy, he begins doing this on his own.
Bling Bling Bang: Out of his Rider form, his main weapon is an elaborate gold revolver, which Daiki attempted to steal in 2008.
Finishing Move: Although not mentioned in the movie, the Gun Mode's finisher is called World Punish, and the Jutte Mode's is called World End.
Heel-Face Turn: Daiki reveals his entire plan was to not only retrieve the treasure he never did steal the last time, but to save Reiji's own 'treasure', a large number of letters from Reiji's mother, who Reiji believed abandoned him. At this reveal, Reiji breaks down and changes his ways...however, Eve goes Ax-Crazy...
Heel Realization: Reiji has one when he's given the letters from his mother that were kept from him and realizes she really did care about him, triggering his Heel-Face Turn.
Inspector Javert: Seeks to arrest not just Daiki, but the entire DenLiner crew as well for their "crimes against time". Once they are captured and subsequently escapes, he and Eve decides to just execute them.