History YMMV / KamenRiderDecade

* FandomEnragingMisconception: A PlayedForLaughs version. If you call Tsukasa's color pink, expect there to be dozens of replies of people saying he's actually magenta.

* SeinfeldIsUnfunny: ''Decade'' is well-seated with the fans initially but after subsequent crossover movies keep portraying the [[SuperDickery titular rider leading the villainous army to kill all Riders and/or destroying the world]] and yet he is always right anyway [[AssPull for the sake of plot twist]], the series plummeted to slightly below ''[[Series/KamenRiderWizard Wizard]]'' in terms of popularity.

* WhatAnIdiot:
** [[spoiler:No, Fourteen, forcing your most loyal servant watch his brother get brainwashed while telling him you've been lying to him the entire time about his education program [[SarcasmMode WILL HAVE NO CONSEQUENCES WHATSOEVER]]]].
** In the world of Black RX, Apollo Geist claims that Tsukasa is trapped in the parallel world of Black forever. As he is saying this, meanwhile in that other area, Schwarian leaves a portal to the world of Black RX open while fighting Decade.

** [[FaceOfAnAngelMindOfADemon Momose]]/[[TeensAreMonsters Tiger Orphnoch]], the prideful leader of the new Lucky Clover in the [[Series/KamenRider555 World of Faiz]], is introduced as a member of a gang of bullies studying at Smart Brain High School who is quickly revealed to be a budding psychopath. Having orchestrated a series of attacks targeting other students, Momose tries to kill Takumi's best friend in front of him and orders his comrades to indiscriminately kill numerous students while he could watch and mock the victims. Not satisfied with the initial massacre, Momose gathers the survivors in a circle for them to be executed one by one, informing them that if they are lucky, they could be turned into Orphnoch.
** [[EvilTwin Otoya Kurenai]] is [[Series/KamenRiderKiva King]]'s substitute in the World of Negatives, possessing not only all of his FantasticRacism, but also a charismatic personality to hide the fact that he is a cold-hearted, scheming dictator. As the commander of the Dark Riders, Otoya annihilated more than half of humanity in a genocide, and leads the extermination of survivor camps, while also [[BadBoss abusing those who defy him]]. Seeking to make Tsukasa his successor, Otoya tries to [[TheCorrupter corrupt him]] into abandoning his journey and accepting the nature of his oppressive world.

* BrokenBase: On one side, people who like ''Decade'' enjoy it because they feel it's a celebration of what makes ''Franchise/KamenRider'' great while having an interesting MythArc story. On the other side, people who dislike it feel that the overuse of {{Suspiciously Similar Substitute}}s ruins what could have been a great ReunionShow and that [[TheWorfEffect every returning character was weakened to make Decade look stronger]][[note]]to be fair, it would've been impossible to get ''all'' the actors who portrayed the original riders back - even if Toei had been able to afford re-hiring Takeru Satoh and Hiro Mizushima to play Ryotaro Nogami and Souji Tendou, they still wouldn't have been able to use Yusuke Godai, mainly due to the fact that his actor, Joe Odagiri, hasn't expressed an interest in reprising the role; however, Toei ''could'' have gotten the other actors back, considering that most of them are still on good terms with the staff of their respective shows[[/note]]. However, both sides generally agree that the show should have had more than two episodes per plot arc.

* TastesLikeDiabetes: Kivala. She's small, has a cute voice, and has some of the most adorable moments.

** The Kabuto World story ends with Kivaara facing off with a Worm mimicking Kivaara, for no reason other than to have a Worm mimicking Kivaara. It gets weirder if you're familiar with the concept from [[Series/KamenRiderKabuto the original series]]. [[note]]Typically, ShapeshifterBaggage is only loosely employed so that Worms, being human-sized, can only impersonate other humans - but Kivaara is ''the size of a baseball.''[[/note]]

* SpecialEffectFailure: Kivaara initially made her first appearances as a CGI model. A few episodes later and she became a toy on a string.
** Taken to an absolutely appalling level in episode 12, where Kivaara has CGI in one scene and then instantly shifts back to toy-on-a-string for her next appearance ''in the very same episode''.

* SugarWiki/AwesomeMusic: [[https://www.youtube.com/watch?v=ofkJLPdB4os Episode 19.]]

* SeasonalRot: Decade as a character remains popular, but ''Decade'' as a show has been critiqued for things such as its confusing plot, having most of the past Heisei Riders be AU versions rather than the original ones, and a [[NoEnding disappointing and controversial final episode]].

* SeinfeldIsUnfunny: ''Decade'' is well-seated with the fans initially but after subsequent crossover movies keep portraying the [[SuperDickery titular rider leading the villainous army to kill all Riders and/or destroying the world]] and yet he is always right anyway [[AssPull for the sake of plot twist]], the series plummeted to slightly above ''[[Series/KamenRiderWizard Wizard]]'' in terms of popularity. [[SeasonalRot And considering fans' reception about the latter show...]]

* MemeticMutation:
** ''[[Series/KamenRiderKuuga "Mo' fear! Mo' pain! No henshin, Kamen Rider Kuuga!"]]''[[note]] A parody of the original Kuuga's catchy opening. Lots of people absolutely hate Yusuke Onodera for being a selfish {{Jerkass}} who only ever fought as Kuuga for his own sake or his sisters and for [[ReplacementScrappy not only not being Yusuke Godai but also being his exact opposite]]. Coupled with his transformations into Kuuga being far and few between and some fans wonder just ''what the hell he's doing in the cast.''[[/note]]
** [[AC:ONORE, DI[[JustForPun C]]KEIDO!]] (Yes, the show's unique pronunciation of "Decade" is [[DontExplainTheJoke part of the meme]][[note]]It should be ''Dikeido'', actually, but...Just check the highlighted letter.[[/note]])
*** Also an AscendedMeme in the Net Movies.
** "This is all Decade's fault!" [[note]]Whenever Narutaki appears, it's usually to blame Decade for whatever problem the world is facing. Fans ran with it and started to mockingly blame Decade for just about every problem under the sun, though the most common topics are the Kamen Rider series, crossover events, and trans-dimensional travel[[/note]]
** [[https://static.tvtropes.org/pmwiki/pub/images/junichitroll_3638.jpg Junichi Kaito's rather]] [[NightmareFace unsettling]] [[TheUnSmile smile]].
** [[spoiler:Decade has no story.]]
** [[https://www.youtube.com/watch?v=ap_CRESxNFE Hibiki's Final Attack Ride]] due to being in the running for most awesome Kamen Rider moment '''''ever'''''.

** [[AlternateUniverse Yusuke Onodera]], [[Series/KamenRiderKuuga Godai's]] counterpart. For his detractors, starting out as a selfish asshole (aka the exact opposite of the original Kuuga) left a sour taste, and he only got worse when he barely did anything over the course of the show, not even transforming all that much. However, some enjoy his amicable personality when he joins the others, being the more down-to-earth character of the group, and bringing some comedy ([[ButtMonkey at his expense]]). They also point out that the entire point of the AR Riders was to be different from their original counterparts, and that the idea of him being a carbon copy of the original Kuuga with a different face would be a little lazy.

** [[https://static.tvtropes.org/pmwiki/pub/images/junichitroll_3638.jpg Junichi Kaito's rather]] [[NightmareFace unsettling smile]].

*** The Kabuto World story ends with Kivaara facing off with a Worm mimicking Kivaara, for no reason other than to have a Worm mimicking Kivaara. It gets weirder if you're familiar with the concept from [[Series/KamenRiderKabuto the original series]]. [[note]]Typically, ShapeshifterBaggage is only loosely employed so that Worms, being human-sized, can only impersonate other humans - but Kivaara is ''the size of a baseball.''[[/note]]
** The first sign of Diend's powers shows up during a fight in Blade's world, where suddenly out of nowhere Todoroki appears. He plays his guitar solo, strikes his guitar into the ground attacking everyone, then disappears.

* "This is all Decade's fault!" [[note]]Whenever Narutaki appears, it's usually to blame Decade for whatever problem the world is facing. Fans ran with it and started to mockingly blame Decade for just about every problem under the sun, though the most common topics are the Kamen Rider series, crossover events, and trans-dimensional travel[[/note]]

*** Or the English alternative: "It's Decade's fault!"