Heisei Rider vs. Showa Rider: Kamen Rider Taisen feat. Super Sentai

Heisei Rider vs. Showa Rider: Kamen Rider Taisen feat. Super Sentai (平成ライダー対昭和ライダー 仮面ライダー大戦 feat.スーパー戦隊) is the third film in the Super Hero Taisen Series and is a crossover between the Showa Kamen Rider series and the Heisei Kamen Rider series, and also featured some Super Sentai members.

Synopsis
The Riders are usually fighting in order to protect their worlds, but this time around they are fighting each other. It seems like the fighting is connected to the Underground Empire Badan. Kamen Rider 1, Takeshi Hongo, is trying to defeat Badan and in order to do that he must defeat Gaim. Badan are using monsters from different series and are trying to continue where Shocker left off. ToQger and Kyoryuger will be joining the fight to protect world peace.

Plot
The film opens with Zawame City ravaged by a fight between the Heisei Riders and the Shōwa Riders, before going back in time to the week before, when workers from the Yggdrasill Corporation are dragged by an unknown force underground. Upon hearing rumors about it, Kouta Kazuraba investigates the area with his friend Mai Takatsukasa, just to fall into a hole as well and find themselves in an underground, alternate version of the city. The two find a boy called Shu, who has the power to revert things and is certain that he has something important to do, but he does not remember what it is. Kouta and Mai then bring the boy to the surface and Takeshi Hongo appears demanding them to hand him over. When soldiers from the Underground Badan Empire appear to kidnap him as well, Takeshi transforms into Kamen Rider 1 to allow Kouta, Mai, and Shu to escape. Badan then launches an attack on the surface, and Armored Riders Baron, Ryugen, and Zangetsu Shin appear to fight back alongside Kouta, who transforms into Armored Rider Gaim as well to protect his friends. However, Gaim is attacked by Kamen Rider Fifteen, who is also seeking the boy and also possesses a Lockseed that allows him to transform into the Rider Arms of the 15 Heisei Riders, and when Kamen Riders 1, 2, and V3 appear to fight him, Shu uses his powers to escape with Gaim and Mai.

Kouta and Mai take Shu to Drupers where they meet Tsukasa Kadoya, and Narutaki appears before them as well, affirming that the fifteen Heisei Riders must join forces to stop the Badan Empire, and before leaving, warns them that asking for the Shōwa Riders help is useless as they will refuse to cooperate with them. Tsukasa then departs to gather the other Kamen Riders with Kaito Kumon, while Kouta stays behind to take care of Shu. The first Rider they contact is Shotaro Hidari, who refuses to hear their plea before he finishes his job to search for some lost pets. Leaving Kaito behind to help Shotaro with his errand, Tsukasa contacts Takumi Inui who also refuses to help, claiming that his days as a Kamen Rider are over. Kamen Rider Fifteen appears to attack them, and Tsukasa transforms into Kamen Rider Decade to fight him, allowing Takumi and himself to escape harm. Some time later in a ramen shop, Takumi involves himself in an incident where a wounded runaway criminal holds Mari, a high school girl, hostage. Keisuke Jin appears and heals his wounds before convincing him to release Mari and surrender to the police. Takumi then follows Jin to his clinic, where he helps him tend to another patient. Takumi then confides in Jin about how he is haunted by the death of his friend Masato Kusaka and Jin convinces him to stay at his clinic for a while.

The next day, Takumi and Mari are attacked by the Badan Empire. In order to protect her, Takumi decides to fight again as Kamen Rider Faiz, defeating them, but in turn, Jin reveals himself as Kamen Rider X, attacking and defeating Faiz before claiming that he must find his resolve by himself. Meanwhile, Tsukasa finally convinces Shotaro to listen to his request, and asks him about Shu. Elsewhere, Shu finally remembers his past and leads Kouta to his house, where it is revealed that Shu has been dead the whole time. Just before his death, he had a fight with his mother, and he now wishes to see her one last time to make amends with her. Kamen Rider Fifteen then appears to take Shu with him, and Kouta learns that he is actually Shu's father Ren Aoi. Aoi reveals that the Badan Empire intends to use Shu's powers to power up a machine known as the Mega Reverse, which can make the dead return to life while killing the living, allowing his son to come back to life. While Kamen Rider Gaim fights Kamen Rider Fifteen, Kamen Rider Decade appears and takes Shu to see his mother, but General Jark stands in his way. Kamen Riders Black and Black RX appear to defeat Jark before turning to fight Kamen Rider Decade as well, but Shotaro appears to fight them instead as Kamen Rider Joker and allows Tsukasa to keep escorting the boy. Kamen Rider Baron appears to assist Kamen Rider Joker against the Shōwa Riders while Tsukasa takes Shu to the lighthouse where his mother is staying. But before he can meet her, Kamen Rider Fifteen appears and defeats both Kamen Riders Decade and Gaim with the power of the Heisei Rider Lockseed.

Back in the present day, as the Shōwa and Heisei Riders fight and defeat each other, from the Shadow Line appears to join forces with the Badan Empire, interested in using the Mega Reverse Machine to convert light into darkness to expand the Shadow Line's domains, and sends his Kuliners to attack Kamen Rider Den-O's Den Liner. Kouta, Tsukasa, and Takumi join forces with the remaining Heisei Riders and confront the Shōwa Riders about their reasons for attacking them. Kamen Rider 1 explains that it was all the Heisei Riders' fault, as it was their attachment to their deceased important ones that empowered the Badan Empire and allowed the advent of Kamen Rider Fifteen. Meanwhile, Ambassador Darkness, the leader of the Badan forces, reveals himself as Ryo Murasame, who has infiltrated the organization to destroy it from the inside. He betrays the Generalissimo of Badan, apparently destroying the Mega Reverse Machine, but is deceived instead, when the true Mega Reverse Machine is revealed to be the entire Badan Empire base, which takes flight up in the sky. Ryo then reveals that the other Kamen Riders that have supposedly been defeated had in fact been sent to Helheim Forest, and takes the opportunity to summon them back all at once to assist him and Kamen Rider Gaim.

The Heisei and Shōwa Riders confront the Badan Empire helped by Armored Riders Baron, Ryugen, and Zangetsu Shin when the Generalissimo of Badan reveals itself as a giant monster. from the appears, as well, to fight the monster with Gabutyra, but it proves itself too strong for just his Zyudenryu. Soon after, the and Kamen Rider Den-O arrive to assist him, combining their trains with Gabutyra into ToQ-Oh Kyoryuzin feat. DenLiner to destroy the Generalissimo. As Kamen Rider Decade rescues Shu from the Mega Reverse Machine, Kamen Riders Wizard and X are about to destroy it for good, when they are stopped by Faiz, who wants to atone for Masato's death by allowing him to be revived. However, Haruto Soma and Jin convince him that destroying the machine is the right thing to do, and together the three Kamen Riders wreck it down. Kamen Rider 1 gives Kamen Rider Gaim a special Lockseed containing the powers of the 15 Shōwa Riders, allowing him to transform into 1 Arms and finally defeat Kamen Rider Fifteen, who returns to his senses. With the Badan Empire all but defeated, the Shōwa Riders use their power to have Shu reunite and reconcile with his parents one last time before passing on to the other side. However, the Shōwa Riders are still in doubt if they can leave the protection of Earth to the Heisei Riders and challenge them to a battle, with Narutaki watching it all from afar. The battle concludes when Kamen Rider Gaim risks himself to protect a single flower from Kamen Rider 1's Rider Kick, leading the Shōwa Rider to admit defeat upon realizing his act of kindness. Now truly reconciled, the Shōwa and Heisei Riders then bid farewell to each other and follow their separate ways once more.

In an alternate ending, Kamen Rider Gaim admits defeat instead, as while he prepares a powered up attack to use against Kamen Rider 1, he stops after realizing that the Shōwa Rider could attack him before he deploys it. Kamen Rider 1 still commends him upon realizing his act of kindness, leading the Shōwa and Heisei Riders to reconcile as well.

Continuity and Placement

 * Kamen Rider Gaim: The premiere date of this movie places it between Episode 23 and Episode 24. The former appears accurate, as Gaim has access to Kachidoki Arms here. However, due to the latter showing Baron still in the same fight he was in at the end of episode 23, the movie seems to take place at least after episode 24.
 * : The premiere date of this movie places it between Station 6 and Station 7.





Allies

 * Mai Takatsukasa
 * Kiyojiro Bando
 * Iyo
 * Mari

Villains

 * Badan Empire
 * The Generalissimo of Badan
 * Ambassador Darkness
 * Yamaarashi-Roid
 * Tiger-Roid
 * Ten-Faced Demon Llumu Qhimil
 * General Shadow
 * Marshal Machine
 * Super Galaxy King
 * Bilgenia
 * High Priest Baraom
 * Neo Organism
 * Kaijin
 * Scorpion Man
 * Sabotegron
 * Ghoster
 * Zanjioh
 * Shiomaneking
 * Poison Lizard Man
 * Jaguarman
 * Girizames
 * Hiruchameleon
 * Ganikomol
 * Turtle Bazooka
 * Suddendath
 * Garai
 * Schwarian
 * Ika-Jaguar Yummy
 * Shocker Greeed
 * Combatmen
 * Shocker Combatmen
 * Destron Combatmen
 * Combat-Roids
 * Chaps
 * Orphnoch (flashback)
 * Arch Orphnoch
 * Horse Orphnoch
 * Arch Orphnoch
 * Horse Orphnoch

Rider Cards

 * Cards Used:
 * Kamen Ride: Decade, Hibiki, Kuuga
 * Attack Ride: Invisible
 * Final Form Ride: Agito Tornador
 * Forms:
 * Decade, Decade Hibiki, Decade Kuuga Mighty Form

Gaia Memories

 * Memory Used:
 * Kamen Rider Double
 * Soul - Cyclone
 * Body - Joker
 * Half Changes:
 * CycloneJoker
 * Kamen Rider Joker
 * Joker

Core Medals

 * Core Medals Used:
 * Head - Taka
 * Arms - Tora, Kujaku
 * Legs - Batta, Condor
 * Combo Used:
 * Tatoba, Tajadol

Astroswitches

 * Switches used:
 * Kamen Rider Fourze
 * Circle: Rocket Super-1, Rocket
 * Cross: N/A
 * Triangle: Drill, Gatling
 * Square: N/A
 * States Used:
 * Rocket States, Base States

Wizard Rings

 * Rings Used:
 * Kamen Rider​ Wizard
 * ​Transformation: Flame, Infinity
 * Magic: Big, Bind, Driver On
 * Style Used:
 * Flame Style, Infinity Style

Lockseeds

 * Lock Used:
 * Kamen Rider Gaim
 * Orange, Suika, Lemon Energy, Rose Attacker (given to Decade), Ichigo, Sakura Hurricane, Kachidoki, Showa Rider (Rider 1)
 * Kamen Rider Baron
 * Banana, Mango
 * Kamen Rider Ryugen
 * Budou, Kiwi
 * Kamen Rider Fifteen
 * Fifteen, Heisei Rider (Wizard, Decade, Fourze, Gaim)
 * Kamen Rider Zangetsu Shin
 * Melon Energy
 * Arms Change:
 * Kamen Rider Gaim
 * Orange Arms, Suika Arms, Jimber Lemon Arms, Ichigo Arms, Kachidoki Arms, 1 Arms
 * Kamen Rider Baron
 * Banana Arms, Mango Arms
 * Kamen Rider Ryugen
 * Budou Arms, Kiwi Arms
 * Kamen Rider Fifteen
 * Fifteen Arms, Wizard Arms, Decade Arms, Fourze Arms, Gaim Arms
 * Kamen Rider Zangetsu Shin
 * Melon Energy Arms
 * Lock Vehicle:
 * Kamen Rider Gaim
 * Sakura Hurricane
 * Kamen Rider Decade
 * Rose Attacker

Other Form Changes

 * Agito: Trinity Form
 * Faiz: Axel Form, Blaster Form

Zyudenchi

 * Kyoryu Red - Gabutyra (Battle Mode)

Transfer Changes

 * ToQ 1gou - N/A
 * ToQ 2gou - N/A
 * ToQ 3gou - N/A
 * ToQ 4gou - N/A
 * ToQ 5gou - N/A

Mecha

 * ToQ-Oh
 * ToQ-Oh Kyoryuzin feat. DenLiner

Cast

 * Kamen Rider Series cast
 * Kota Kazuraba (葛葉 紘汰): Gaku Sano (佐野 岳)
 * Kaito Kumon (駆紋 戒斗): Yutaka Kobayashi (小林 豊)
 * Mitsuzane Kureshima (呉島 光実): Mahiro Takasugi (高杉 真宙)
 * Takatora Kureshima (呉島 貴虎), Kamen Rider Shin (仮面ライダーシン): Yuki Kubota (久保田 悠来)
 * Mai Takatsukasa (高司 舞): Yuumi Shida (志田 友美)
 * Kiyojiro Bando (阪東 清治郎): Tomohisa Yuge (弓削 智久)
 * Drupers' Staff (ドルーパーズのスタッフ): Yui Natsuki (那月 結衣)
 * Haruto Soma (操真 晴人): Shunya Shiraishi (白石 隼也)
 * Shotaro Hidari (左 翔太郎): Renn Kiriyama (桐山 漣)
 * Tsukasa Kadoya (門矢 士): Masahiro Inoue (井上 正大)
 * Narutaki (鳴滝): Tatsuhito Okuda (奥田 達士)
 * Takumi Inui (乾 巧), Riderman (ライダーマン): Kento Handa (半田 健人)
 * Masato Kusaka (草加 雅人): Kohei Murakami (村上 幸平)
 * Ryo Murasame (村雨 良), Ambassador Darkness (暗闇大使): Shun Sugata (菅田 俊)
 * Keisuke Jin (神 敬介): Ryo Hayami (速水 亮)
 * Takeshi Hongo (本郷 猛): Hiroshi Fujioka (藤岡 弘)
 * Kamen Rider Den-O Sword Form (仮面ライダー電王ソードフォーム): Toshihiko Seki (関 俊彦)
 * Drag Visor Voice (ドラグバイザー音声): Tsuyoshi Koyama (小山 剛志)
 * Faiz Driver Voice (ファイズドライバー音声): Takehiko Kano (假野 剛彦)
 * Blay Rouzer Voice (ブレイラウザー音声): Takeshi Sasaki (佐々木 健)
 * Kabuto Zecter Voice (カブトゼクター音声): Surage Gajria (スラージ・ガジリア)
 * Decadriver Voice (ディケイドライバー音声): Mark Okita (マーク・大喜多)
 * Gaia Memory Voice (ガイアメモリ音声): Fumihiko Tachiki (立木 文彦)
 * O Scanner Voice (オースキャナー音声): Akira Kushida (串田 アキラ)
 * Sengoku Driver Equipment Voice (戦極ドライバー関連アイテム音声): Seiji Hiratoko (平床 政治)
 * Super Sentai Series cast
 * Raito (ライト): Shison Jun (志尊 淳)
 * Tokatchi (トカッチ): Hiramaki Jin (平牧 仁)
 * (ミオ): (梨里杏)
 * (ヒカリ): Yokohama Ryūsei (横浜 流星)
 * (カグラ): Moritaka Ai (森高 愛)
 * Kiryū Daigo (桐生 ダイゴ): Ryūsei Ryō (竜星 涼)
 * ToQger Equipment Voice (トッキュウジャー各種アイテム音声): Yamaguchi Kappei (山口 勝平)
 * Shubarutsu Shogun (シュバルツ将軍): Jō Haruhiko (壤晴彦)
 * Kyoryuger Equipment Voice (キョウリュウジャー各種アイテム音声): Chiba Shigeru (千葉 繁)
 * Kamen Rider Taisen-only cast
 * Ren Aoi (蓮 碧): Itsuji Itao (板尾 創路)
 * Saki Aoi (葵 咲): Akiko Hinagata (雛形あきこ)
 * Shuu Aoi (葵 終): Yuzu Aoki (青木 柚)
 * Mari (マリ): Ai Miyoshi (三好 杏依)
 * Worker (作業員): Kazuo Niibori (新堀 和男), Seiji Takaiwa (高岩 成二)
 * Kenji Tominaga (富永 研司)
 * Jiro Okamoto (岡元 次郎)
 * Toshihiro Ogura (おぐら としひろ)
 * Katsuo Niijima (新島 勝夫)
 * Matsumi Fuku (ふく まつみ)
 * Ryuhei Watabe (渡部 龍平)
 * Miscellaneous voice roles
 * Kamen Rider Black RX (仮面ライダーBLACK RX), Kamen Rider Fourze (仮面ライダーフォーゼ), Yamaarashiroid (ヤマアラシロイド): Kenichi Suzumura (鈴村 健一)
 * Kamen Rider 2 (仮面ライダー2号), Kamen Rider Super-1 (仮面ライダースーパー1), Kamen Rider Black (仮面ライダーBLACK), Kamen Rider Kabuto (仮面ライダーカブト): Hiroshi Kamiya (神谷 浩史)
 * Kamen Rider V3 (仮面ライダーV3), Kamen Rider Amazon (仮面ライダーアマゾン), Kamen Rider Stronger (仮面ライダーストロンガー), Marshal Machine (マシーン大元帥), The Generalissimo of Badan (バダン総統): Tomokazu Seki (関 智一)
 * Kamen Rider J (仮面ライダーJ), Tigeroid (タイガーロイド), Orphnoch (オルフェノク): Tetsu Inada (稲田 徹)
 * Skyrider (スカイライダー), General Shadow (ジェネラルシャドウ), General Jark (ジャーク将軍), Ten-Faced Demon Llumu Qhimil (十面鬼ユム・キミル): Hideo Ishikawa (石川 英郎)
 * Kamen Rider Ryuki (仮面ライダー龍騎), Shocker Combatman (ショッカー戦闘員): Yuuki Anai (穴井 勇輝)
 * Taketoshi Kawano (川野 剛稔)
 * Kunihiro Kawamoto (河本 邦弘)

Suit actors

 * Kamen Rider Gaim: Seiji Takaiwa (高岩 成二)
 * Kamen Rider Baron: Eitoku (永徳)
 * Kamen Rider Ryugen: Daisuke Satō (佐藤 太輔)
 * Kamen Rider Decade, Kamen Rider Double, Kamen Rider Zangetsu Shin: Jun Watanabe (渡辺 淳)
 * Kamen Rider 1, Kamen Rider X: Yugo Fujii (藤井 祐伍)
 * Kamen Rider Faiz: Kosuke Asai (浅井 宏輔)
 * Kamen Rider ZX: Naoki Ōfuji (大藤 直樹)
 * Kamen Rider Wizard, Yamaarashiroid: Kazuya Okada (岡田 和也)
 * Kamen Rider Fifteen: Kenji Tominaga (富永 研司)
 * ToQ 1gou, Kyoryu Red: Yoshifumi Oshikawa (押川 善文)
 * ToQ 2gou: Masashi Takada (高田 将司)
 * ToQ 3gou: Gomi Ryōko (五味 涼子)
 * ToQ 4gou: Takeuchi Yasuhiro (竹内 康博)
 * ToQ 5gou: Nogawa Mizuho (野川 瑞穂)
 * General Schwarz: Jiro Okamoto (岡元 次郎)
 * ToQ-Oh: Hideaki Kusaka (日下 秀昭)

Errors

 * When Decade transforms into Hibiki while fighting Fifteen, the transformation phrase is the incorrect Form Ride (in Kamen Rider Decade, Form Ride refered to the alternate forms). When he transforms into Kuuga, however, the phrase is the correct Kamen Ride.
 * The sound editing in the film is sub-par compared to previous films, with the background music sometimes being louder than the dialogue in specific scenes such as the scene when Takumi, Tsukasa and Kouta are talking.
 * When Takumi transform in Faiz Blaster Form, he placed the Faiz Phone in the Faiz Driver, rather than the Faiz Blaster weapon.
 * There are a few continuity errors in this film:
 * The most notorious one among fans is the retcon of Masato Kusaka's death. In Kamen Rider Faiz, Masato was alone when Yuji Kiba snapped his neck and the Orphnoch DNA in his body ran out which caused him to die by deteriorating into ash. In the movie, Yuji in his Horse Orphenoch form overpowered Masato and burned him while Faiz was fighting the Arch Orphnoch (an enemy that had not shown up until the final arc of the TV series).
 * Takumi also feels guilty about Masato's death despite the fact that in the TV series, Masato was an irredeemable person who was manipulative towards everyone around him and tried to have Takumi killed or out of the way by deceiving his allies. Also, as stated above, Takumi was not there to witness that event to begin with in the series.
 * Once again, Toei decided that Black and Black RX are separate characters, despite them being the exact same person, with no explanation given. Though considering that Decade is involved in this film, one of them could be an A.R. World version of the character.
 * The reason the Showa Riders are fighting the Heisei Riders does not make any sense considering that they have fought together on multiple occasions without any issues.
 * Narutaki calls himself an "ally to the Kamen Riders" and seems to be on better terms with Tsukasa. This does not make any sense as Narutaki has antagonized Decade and the Riders. One notable example of this in the past is allying himself with Dai-Shocker and commanding thier armies by taking the form of past generals such as Colonel Zol.