Kamen Rider Heisei Generations Forever

This article is about a movie in Kamen Rider Zi-O and Kamen Rider Build.

Kamen Rider Heisei Generations Forever
A movie for Kamen Rider Zi-O and Kamen Rider Build
Tribute to	Heisei Era Kamen Rider Kuuga Kamen Rider Den-O Kamen Rider W Kamen Rider Build
Release Date	Theatrical: December 22, 2018 DVD/Blu-Ray: May 8, 2019
Production Information
Writer(s)	Kento Shimoyama Yasuko Kobayashi (supervision for Den-O portion)
Director	Kyohei Yamaguchi
Order in Continuity
Previous	My × My Stage 2013
Next	Ghost Hunter 2018
Previous	Kamen Rider Build: Final Stage
Next	Kamen Rider Build NEW WORLD: Kamen Rider Cross-Z
Production Order
Previous	Kamen Rider Build: Be The One
Next	Kamen Rider Build NEW WORLD: Kamen Rider Cross-Z

Kamen Rider Heisei Generations FOREVER (仮面ライダー平成ジェネレーションズFOREVER, Kamen Raidā Heisei Jenerēshonzu Foebā) is a Japanese superhero crossover film between Kamen Rider Build and Kamen Rider Zi-O, and the 10^th overall installment of the Movie War series of films. It is the third and final installment of the Heisei Generations Series while serving a tribute film for Kamen Rider Kuuga, Kamen Rider W, and Kamen Rider Den-O. In the film, Sento and Sougo attempt to reverse the damages caused by a powerful Time Jacker who wishes to erase the legacy of the Heisei Riders and take over the world. The first trailer of the film was unveiled on November 13, 2018, and premiered in Japanese theaters on December 22, 2018, followed by its DVD/Blu-Ray release on May 8, 2019.

The taglines for this movie are "A generation ends. A new era begins." (時代が終わる。すべてがはじまる。, Jidai ga owaru. Subete ga hajimaru.) and "For all who love the Kamen Riders..." (仮面ライダーを愛してくれたあなたへ, Kamen Raidā o aishite kureta anata e ...)

Synopsis

A powerful Time Jacker named Tid appears and creates two powerful warriors, Another Double and Another Den-O and orders them to pursue a young boy named Shingo. While Sougo Tokiwa attempts to protect him, he meets a young Kamen Rider fan named Ataru, who demoralizes the existence of the Kamen Riders. What does he mean? Meanwhile, Sento Kiryu attempts to take on Tid alone, but is brainwashed and manipulated by the Time Jacker as a result. With the mystery uncovered, Sougo and Sento head to the Kurogatake Mountains where they must face their true enemy.

Continuity and Placement

• Kamen Rider Zi-O: The film is non-canon, as confirmed by producer Shinichiro Shirakura. 
  • If ignoring the canon, judging from the date 2^nd December, this movie takes place between episodes 12 and 13.
  • In episode 44, a flashback from the film is shown.
• Kamen Rider Build: After the events of the final episode and before Kamen Rider Build NEW WORLD: Kamen Rider Cross-Z.

Plot

While walking back home with his friends, Sougo Tokiwa is ambushed by Geiz's Time Mazine, however the Another Den-Liner appears from the time continuum and makes a crash landing. The Super Time Jacker Tid walks out of the Another Den-Liner and proclaimed that he would destroy the legacy of the Heisei Kamen Riders. Another Den-O jumps out and attacks Sougo, who has apparently lost his memories of being Kamen Rider Zi-O. After touching his dropped Zi-O Ridewatch, Sougo's memories return, and both him and Geiz transform to fight Another Den-O, but it escapes. After canceling their transformations, the two are met with an audience who applaud them. Tsukuyomi, who's memories had just been altered, then yells at the two by their last names, saying they were late for school.

Meanwhile in the city, a boy named Shingo is caught in a green tornado and falls into the arms of Ryuga Banjo. While Sento Kiryu attempts to make a scientific guess as to what just happened, they are met with Another Double, who attacks the now-transformed Build and Cross-Z. While Ataru Hisanaga happily records the fight, Kazumi Sawatari as Grease and Gentoku Himuro as Rogue arrive to help Build and Cross-Z fight Another Double. After they fend him off, Sento and Ryuga are then confused as to why Kazumi and Gentoku have their memories, as they did not cross through the new world. Later when they realize the boy from earlier was gone, Sento sets out to find him. Later at that moment, Gentoku loses his memories and walks off. Kazumi and Ryuga walk the city trying to figure out what happened to Gentoku and the new world situation, when Misora Isurugi arrives and berates Ryuga for not calling or texting her, while ignoring Kazumi. Ryuga is surprised to see that Nascita has now changed to Nasubi, when Misora suddenly loses her memories and happily runs off from who she thinks are her "fans".

At Hikarigamori High School, Sougo and Geiz notice that Tsukuyomi's memories have been heavily altered, and her personality seems too "normal". Ataru approaches her and refers to her as "Tsukuyomi", which Geiz found weird as that is not a name that anyone in the current time period should know, except Sougo and Geiz. Sometime after school, Tsukuyomi and her friends decide to head to the formerly 9 5 DO, now Mojimoji to eat. Geiz follows them in and is greeted by Junichiro Tokiwa who offers to take his order. Geiz politely declines, but his poor choice of words landed him a cup of coffee.

Sento finds Shingo and reveals that he is Kamen Rider Build, however Tid appears wanting to take Shingo away. Sento enters a fight with him to protect Shingo, but he gets brainwashed himself and is forced to do Tid's bidding. Tid becomes unpleased that Riders exist in this world despite them being fictional and wants to know why. He reveals that Shingo is the key to his plans. In secret, Sento programs his Build Phone.

Ataru walks home and discovers that Sougo was following him, so Ataru introduces himself as Sougo's classmate. He also reveals that he has the ability to draw Kamen Riders to him, so he knows Sougo is Zi-O. Sougo didn't seem convinced, so Ataru takes him to Futo City to eat at Master of Fumen's shop, hoping to draw out Kamen Rider Double, however they end up drawing out Another Double instead, who was chasing Shingo. Sougo attempts to transform, but Another Double escapes at the sight of seeing Sougo's Driver and Ridewatch. Master then discovers that Sougo was the one that Shotaro Hidari was talking about, so he presents him with the Double Ridewatch. Sougo then talks to Shingo and offers to help him find his mother, however Shingo replies that his mother is currently in the hospital giving birth to his younger brother. He also expresses interest in watching Kamen Rider Kuuga, which Ataru is surprised to hear such a young kid be interested in the classics. Ataru reveals he was born the day before Kuuga had aired its first episode on television, and Shingo thought today was Ataru's birthday.

Sougo brings Shingo and Ataru to the now Cafe Mojimoji, where he finds Geiz studying and has now lost his memories. Outside, Sougo tells Shingo that he should bring him home and brings out his map app on his smartphone, which Shingo replies that it was his first time seeing a "small laptop". Ryuga and Kazumi arrive and see Shingo, who he reveals that after Sento found him, he was caught. Sento's Machine Builder arrives unmanned, which Ryuga deducts that Sento sent it here so they can find him.

Ataru, Kazumi, and Shingo ride the bus home. Ataru finds that Kazumi highly resembles Otoya Kurenai from Kamen Rider Kiva (a reference that both Kazumi and Otoya are portrayed by Kouhei Takeda), but Kazumi replies in confusion. The three get off and arrive at Ataru's house. Discovering that the nameplate is "Hisanaga", Shingo asks for Ataru's name and it strikes familiarity with him. Another Double appears and Kazumi transforms to fight him. Another Den-O arrives and helps Another Double gang up on Grease, and they defeat him. Another Double approaches Ataru and Shingo, but Shingo assures to his younger brother that everything would be ok. He jumps in front and shields Ataru, but is then taken by Another Double. Another Den-O walks up to Ataru and reveals his identity to be Ataru himself, from the future.

Taking the bike, Cross-Z and Zi-O arrive and Tid and Sento's location. Sento transforms into TankTank form and fights the two. Build manages to take down both Cross-Z and Zi-O, and prepares to finish them. However at the very last moment, he turns the blaster and fires at Tid instead, who then uses his powers to stop the attack. Realizing that Sento was only feigning his brainwashing, he did not care as Another Double had already completed his mission by kidnapping Shingo, and leaves. Sento then apologizes to Ryuga and Sougo, as he had to trick his allies first before he is able to effectively fool the enemy. Sento then realizes that the entire fight was actually a diversion in the first place, to lure them away from Shingo and Another Double.

Sougo and Sento then return to Ataru's house looking for "Shingo", but Ataru doesn't know why the two would know the name of his older brother, and realizes they were referring to the boy. He brings them to his room which is filled with Kamen Rider memorabilia, with Sougo and Sento stunned to see toys of themselves. Ataru reveals that Kamen Riders are fictional and were brought to this world due to him making a contract with an Imagin named Futaros. He also reveals that on the day he was born, his older brother of seven years, Shingo Hisanaga went missing. As he grew up a fan of Kamen Rider, he wished that they would one day come to live and help find his brother, which was the main conviction of his contract with Futaros. Realizing that it would never happen because they were fictional, Ataru heeded no mind to the situation with Tid and the Another Riders. This angered Sento, who berated Ataru for having no compassion for people, real or not, and walked away. As the two walk downstairs, Sento discovers a picture. Futaros then reveals to Ataru that his powers are diminishing, and the remaining Riders left in the world will soon disappear.

At Tid's newly created Another Double/Den-O tower, he meets up with the two Another Riders who have successfully taken Shingo. He puts Shingo inside a box, and declares his intent to correct the world. The tower then rises to its apex and causes the weather to change to heavy rain. Sougo began to have an existential crisis, but Sento reassures him that as a guy who used to not exist, he had learned to deal with it and convinced Sougo to as well. The two transform in the rain and fight the horde of soldiers that stand in their way. Inspired by what Sento said, Ataru walks out of his house and finds Kazumi, but he has lost his memory and cannot help him. Ataru is downed by a group of soldiers, but is saved by Futaros. Finishing up his contract, Futaros enters Shingo. At that moment, Sougo arrives and sees Futaros enter. Because Ataru has lost his conviction, Sougo, Sento, and Ryuga disappear.

Sougo then awakens in 9 5 DO and explains what happened to Black Woz. Sento then comes into the shop, and tells Sougo to recall the photo they saw at Ataru's house. The photo is revealed to be a picture of Shingo, which Sougo deduced that Shingo is in fact Ataru's older brother from the past. Knowing what to do, he reveals the Double Ridewatch and uses it to transport the three back to Ataru's world. Sougo arrives at where Ataru was at last, and Woz uses the Gaia Library to ascertain the date that Futaros has gone back to, January 29, 2000, the day Ataru was born. Sougo takes Ataru to that date, to the hospital where Futaros had just arrived and begun to chase after Another Double. Another Double takes "Shingo Hisanaga" hostage. After hearing Shingo's last name, Sougo reveals Shingo's true identity to Ataru. After realizing that his older brother was trying to protect him after all this time, Ataru lashes out at Another Double, but is forcibly transformed into Another Den-O. Another Den-O then leaves with Another Double and Shingo aboard the Another Den-Liner and travel back to where they were at the start of the film. Sougo reveals that he already notified friends to meet him.

At the mummified tomb of Riku, the original Kamen Rider Kuuga, Tid steals its powers into an Another Ridewatch. Geiz arrives in an attempt to stop him from destroying the Heisei Rider legacy. Tid turns himself into Another Kuuga, and Tsukuyomi fights him using his Time Mazine, which unfortunately gets trashed. Sougo and Futaros follow through using Sougo's Time Mazine, but they are ambushed by Another Kuuga and the Another Den-Liner, which ends up trashing up their Time Mazine, and they crash into the mountains. Tid turns back into his human form, and the Another Den-Liner travels foward to December 3, 2018 at the start of the film. As it crashes into Geiz's Time Mazine, Shingo takes this chance to run, though Another Double catches him to him and chases him to the city.

By making himself Another Kuuga, Futaros deduces that Tid already erased the history of the Heisei Riders, and reveals that Shingo is an Singularity Point, meaning temporal changes in his past will not affect him. Futaros announces his intent to help save Shingo and the world, but is distraught that Sougo's Time Mazine is wreaked. After Geiz and Tsukuyomi arrive, they attempt to travel back to 2018 together, but their temporal system were too damaged to get them anywhere. Miraculously, they are saved by the real DenLiner.

Back in present day, Sento and Ryuga confront Tid, who is angry that the Riders still exist. The two transform into RabbitRabbit and Cross-Z Magma and fight the soldiers. After taking the fight outside, Sougo and his team return with the DenLiner's help, and Sento welcomes them back. Sougo, Geiz, and Futaros confront Tid and the Another Riders, who voices his intent on erasing the Heisei Rider legacy. Sougo and Geiz attempt to transform, but Tid stops them and ambushes soldiers on them, while Futaros attemps to save Ataru from Another Den-O through empty ears. Before Another Den-O is able to finish Futaros off, everyone in the room (except Tid) are transported to safety by Kamen Rider Den-O, which Momotaros, Kintaros, Ryutaros, and Urataros take turns fighting the soldiers and defeating Another Den-O, turning Ataru back to normal. Urataros as Ryotaro Nogami helps him up and reveals that Kamen Riders do and will continue to exist as long as people remember them. They then transport the team back, and the Taros fight amongst themselves. While Ryotaro is seemingly possessed by Urataros, Momotaros revealed that he wasn't fooled and Ryotaro smiles.

The four return to the tower, and Ataru tells Tid what Ryotaro had said to him. With his conviction now at its maximum, all the Riders that had lost their memories return, including Kazumi and Gentoku who transform into Grease and Rogue. Two children are ambushed by a pair of soldiers, but their cry for help summons Kamen Riders Ghost and Ex-Aid to their rescue. As two young men are about to be attacked, Double appears to save them. A young man encourages two boys to believe in the Kamen Riders, which results in him summoning Kamen Rider Kuuga. In the public, Kamen Riders Kiva and Gaim appear, followed by Kamen Riders Agito, Ryuki, Wizard. Kamen Riders Blade, Faiz, and Hibiki then follow through. Kamen Riders Kabuto, Decade, and Fourze arrive as well. Last but not least, Kamen Riders OOO and Drive appear. Momotaros in Den-O Sword Form and makes his stand against a group of soldiers. All the Riders are manifested from all the civilians' imaginations and protected them from the monsters.

While Another Double fights Build and Cross-Z, Sougo arrives and transforms into Zi-O DoubleArmor, with Woz giving a speech shortly after commemorating DoubleArmor's first appearance. With the new Armor, Zi-O defeats Another Double. An enraged Tid transforms into Another Kuuga and attacks Zi-O and Geiz. They take their Time Mazines, now fixed by Sento to fight Another Kuuga. Geiz gives Sougo the Kuuga Ridewatch, which he had created at Riku's gravesite before Tid forced him out. After being defeated, Zi-O and Build chase Tid back to the tower, and he merges himself and Shingo before transforming into the giant Another Ultimate Kuuga. The two follow him on their bikes to an empty battlefield, with the public cheering them on. However Tid summoned a horde of soldiers, which then all the Riders appear to help the two clear the battlefield. The Riders then charge their final Rider Kicks alongside Kuuga himself in order to defeat Tid, and save Shingo. In the midst of the battle, Shingo wakes up and is met with an awe sight of all 20 Riders assembled.

As Shingo prepares to be taken back to 2000, Ataru thanked his brother for protecting him, and Shingo apologized for making his younger brother wait to see his brother after 18 years. Futaros considered his job complete and walks away. DenLiner departs and the timeline changes. On January 29, 2000, Ataru Hisanaga is born with Shingo and a Kuuga figurine and plush right beside him. In 2003, the two pose with Kamen Rider Faiz gear. In 2005, the two pose with Hibiki gear. In 2007, the two attend a Kamen Rider Den-O show, posing with Den-O himself. In 2010, the two pose with the Cyclone and Joker Gaia Memories. In 2018, the two pose with Zi-O memorabilia.

In the new timeline, Sougo walks home from school and meets up with Sento, who both found themselves to still exist in the world. Sento decides to let this matter slide and just continue to exist, and Sougo proudly agreed. During the end credits, Sento and Ryuga ride off on their bike, and Sougo meets up with Geiz and Tsukuyomi.

Characters

Kamen Riders

Kamen Rider Zi-O	Sougo Tokiwa
Kamen Rider Geiz	Geiz Myokoin
Kamen Rider Build	Sento Kiryu
Kamen Rider Cross-Z	Ryuga Banjo
Kamen Rider Grease	Kazumi Sawatari
Kamen Rider Rogue	Gentoku Himuro

Legend Riders

Kamen Rider Kuuga	Yusuke Godai
Kamen Rider Agito	Shouichi Tsugami
Kamen Rider Ryuki	Shinji Kido
Kamen Rider Faiz	Takumi Inui
Kamen Rider Blade	Kazuma Kenzaki
Kamen Rider Hibiki	Hitoshi Hidaka
Kamen Rider Kabuto	Souji Tendou
Kamen Rider Den-O Sword	Ryotaro Nogami/Momotaros
Kamen Rider Den-O Rod	Ryotaro Nogami/Urataros
Kamen Rider Den-O Ax	Ryotaro Nogami/Kintaros
Kamen Rider Den-O Gun	Ryotaro Nogami/Ryutaros
Kamen Rider Kiva	Wataru Kurenai
Kamen Rider Decade	Tsukasa Kadoya
Kamen Rider Double	Philip & Shotaro Hidari
Kamen Rider OOO	Eiji Hino
Kamen Rider Fourze	Gentaro Kisaragi
Kamen Rider Wizard	Haruto Soma
Kamen Rider Gaim	Kouta Kazuraba
Kamen Rider Drive	Shinnosuke Tomari
Kamen Rider Ghost	Takeru Tenkuji
Kamen Rider Ex-Aid	Emu Hojo
Kamen Rider Lazer	Kiriya Kujo

Allies

Zi-O

• Tsukuyomi
• Woz
• Junichiro Tokiwa

Build

• Misora Isurugi

Den-O

• Owner

Others

• Imagin

Futaros

Futaros

• Riku

Drive Driver

Krim Steinbelt

Villains

• Another Riders

Another Kuuga	Tid
Another Ultimate Kuuga	Tid & Shingo Hisanaga
Another Double	Another Double
Another Den-O	Ataru Hisanaga

• Bat Imagin (flashback only)

Henchmen

• Masquerade Dopants
• Waste Yummies
• Stardust Ninja Dustards
• Ghouls
• Elementary Inves
• Plain Roidmude
• Gamma Commandos
• Bugster Virus
• Guardian
• Hard Guardian

Cast

Zi-O Cast

• Sougo Tokiwa (常磐 ソウゴ, Tokiwa Sōgo): So Okuno (奥野 壮, Okuno Sō)
• Geiz Myokoin (明光院 ゲイツ, Myōkōin Geitsu): Gaku Oshida (押田 岳, Oshida Gaku)
• Tsukuyomi (ツクヨミ, Tsukuyomi): Shieri Ohata (大幡 しえり, Ōhata Shieri)
• Woz (ウォズ, Wozu): Keisuke Watanabe (渡邊 圭祐, Watanabe Keisuke)
• Junichiro Tokiwa (常磐 順一郎, Tokiwa Jun'ichirō): Katsuhisa Namase (生瀬 勝久, Namase Katsuhisa)

Build Cast

• Sento Kiryu (桐生 戦兎, Kiryū Sento): Atsuhiro Inukai (犬飼 貴丈, Inukai Atsuhiro)
• Ryuga Banjo (万丈 龍我, Banjyō Ryūga): Eiji Akaso (赤楚 衛二, Akaso Eiji)
• Kazumi Sawatari (猿渡 一海, Sawatari Kazumi): Kouhei Takeda (武田 航平, Takeda Kōhei)
• Gentoku Himuro (氷室 幻徳, Himuro Gentoku): Kensei Mikami (水上 剣星, Kensei Mikami)
• Misora Isurugi (石動 美空, Isurugi Misora): Kaho Takada (高田 夏帆, Takada Kaho)

Returning Cast

• Kamen Rider Agito (仮面ライダーアギト, Kamen Raidā Agito, Voice): Toshiki Kashu (賀集 利樹, Kashū Toshiki)
• Kamen Rider Ryuki (仮面ライダー龍騎, Kamen Raidā Ryūki, Voice): Takamasa Suga (須賀 貴匡, Suga Takamasa)
• Ryotaro Nogami (野上 良太郎, Nogami Ryōtarō): Takeru Satoh (佐藤 健, Satō Takeru)
• Momotaros (モモタロス, Momotarosu, Voice): Toshihiko Seki (関 俊彦, Seki Toshihiko)
• Urataros (ウラタロス, Uratarosu, Voice): Kōji Yusa (遊佐 浩二, Yusa Kōji)
• Kintaros (キンタロス, Kintarosu, Voice): Masaki Terasoma (てらそま まさき, Terasoma Masaki)
• Ryutaros (リュウタロス, Ryūtarosu, Voice): Kenichi Suzumura (鈴村 健一, Suzumura Ken'ichi)
• Owner (オーナー, Ōnā): Kenjirō Ishimaru (石丸 謙二郎, Ishimaru Kenjirō)
• Kamen Rider Decade (仮面ライダーディケイド, Kamen Raidā Dikeido, Voice): Masahiro Inoue (井上 正大, Inoue Masahiro)
• Master of Fumen (風麺マスター, Fumen Masutā): Hiroshi Doki (道木 広志, Dōki Hiroshi)
• Kamen Rider Ghost (仮面ライダーゴースト, Kamen Raidā Gōsuto, Voice): Shun Nishime (西銘 駿, Nishime Shun)

Guest Cast

• Ataru Hisanaga (久永 アタル, Hisanaga Ataru): Nayuta Fukuzaki (福崎 那由他, Fukuzaki Nayuta)
• Tid (ティード, Thīdo): Shunsuke Daitō (大東 駿介, Daitō Shunsuke)
• Another Double (アナザーダブル, Anazā Daburu, Voice):Kentaro Ito (伊藤 健太郎, Itō Kentarō)
• Futaros (フータロス, Fūtarosu, Voice): Kenichi Takitō (滝藤 賢一, Takitō Ken'ichi)
• Shingo Hisanaga (久永 シンゴ, Hisanaga Shingo): Taiyo Saito (斎藤 汰鷹, Saitō Taiyō)
• Owada (小和田, Owada): Reo Suzuki (鈴木励和, Suzuki Reo)
• Kazuma Nishimura (西村 和馬, Nishimura Kazuma): Soryu Nishi (西 蒼竜, Nishi Sōryū)
• Ataru Hisanaga's father: Hiroaki Nakagawa (中川ひろあき, Nakagawa Hiroaki)
• Ataru Hisanaga's mother: Erina Takata (高田衿奈, Takata Erina)
• Ataru Hisanaga (Child): Yuugen Okamoto (岡本夕弦, Okamoto Yūgen)

Voice recordings from past series

• Kamen Rider Faiz (仮面ライダーファイズ, Kamen Raidā Faizu, Voice): Kento Handa (半田 健人, Handa Kento)
• Kamen Rider Blade (仮面ライダーブレイド, Kamen Raidā Bureido, Voice): Takayuki Tsubaki (椿 隆之, Tsubaki Takayuki)
• Kamen Rider Hibiki (仮面ライダー響鬼, Kamen Raidā Hibiki, Voice): Shigeki Hosokawa (細川 茂樹, Hosokawa Shigeki)
• Kamen Rider Kabuto (仮面ライダーカブト, Kamen Raidā Kabuto, Voice): Hiro Mizushima (水嶋 ヒロ, Mizushima Hiro)
• Kamen Rider Kiva (仮面ライダーキバ, Kamen Raidā Kiba, Voice): Koji Seto (瀬戸 康史, Seto Kōji)
• Kamen Rider Double (仮面ライダーダブル, Kamen Raidā Daburu, Voice): Renn Kiriyama (桐山 漣, Kiriyama Ren), Masaki Suda (菅田 将暉, Suda Masaki)
• Kamen Rider OOO (仮面ライダーオーズ, Kamen Raidā Ōzu, Voice): Shu Watanabe (渡部 秀, Watanabe Shū)
• Kamen Rider Fourze (仮面ライダーフォーゼ, Kamen Raidā Fōze, Voice): Sota Fukushi (福士 蒼汰, Fukushi Sōta)
• Kamen Rider Wizard (仮面ライダーウィザード, Kamen Raidā Wizādo, Voice): Shunya Shiraishi (白石 隼也, Shiraishi Shunya)
• Kamen Rider Gaim (仮面ライダー鎧武 [ガイム], Kamen Raidā Gaimu, Voice): Gaku Sano (佐野 岳, Sano Gaku)
• Kamen Rider Drive (仮面ライダードライブ, Kamen Raidā Doraibu, Voice): Ryoma Takeuchi (竹内 涼真, Takeuchi Ryōma)
• Drive Driver (ドライブドライバー, Doraibu Doraibā, Voice): Chris Peppler (クリス・ペプラー, Kurisu Pepurā)
• Kamen Rider Ex-Aid (仮面ライダーエグゼイド, Kamen Raidā Eguzeido, Voice): Hiroki Iijima (飯島 寛騎, Iijima Hiroki)

Form Changes and Collectibles Used

Ridewatches

• Watch used:
  • Zi-O
    • Zi-O, W, Kuuga
  • Geiz
    • Geiz
• Rider Armor(s) used:
  • Zi-O
    • WArmor, KuugaArmor
  • Geiz
    • N/A

Fullbottles

• Bottle used:
  • Build
    • Biotic: Rabbit, Lion (in Build Phone), FullFull RabbitTank (Rabbit Mode)
    • Abiotic: Tank, FullFull RabbitTank (Tank Mode)
    • Other: Hazard Trigger
  • Cross-Z
    • Biotic: Dragon, Dragon Magma
    • Abiotic: N/A
    • Other: Cross-Z Dragon, Cross-Z Magma Knuckle
  • Rogue
    • Biotic: Crocodile Crack
    • Abiotic: N/A
• Form(s) used:
  • Build
    • RabbitTank Form, TankTank Form, RabbitRabbit Form
  • Cross-Z
    • Cross-Z, Cross-Z Charge, Cross-Z Magma

Sclashjellies

• Jelly used:
  • Grease
    • Robot
  • Cross-Z Charge
    • Dragon

Wizard Rings

• Ring Used:
  • Transformation - Flame
  • Magic - Special
• Style Used
  • Flame Style

Astroswitches

• Switches Used:
  • Fourze
    • Circle - Rocket
    • Triangle - Drill

Rider Cards

• Card Used:
  • Kamen Rider Decade
    • Kamen Ride: Decade
    • Final Attack Ride: Decade
  • Forms:
    • Decade

Rouze Cards

• Cards used:
  • Blade
    • Change, Kick, Thunder
• Forms used:
  • Blade
    • Ace Form

Advent Cards

• Cards used:
  • Ryuki:
    • Strike Vent, Final Vent
• Weapons/Powers summoned:
  • Ryuki:
    • Drag Claw

Other Form Changes

• Kabuto: Rider Form
• Faiz: Axel Form
• Den-O: Sword Form, Axe Form, Gun Form, Rod Form

Theme song

• Kamen Rider Heisei Generations FOREVER Medley D.A. Re-Build Mix

International Releases

The film was released in Hong Kong on March 14, 2019, available in both Japanese language with Cantonese subtitles and Cantonese dub.

In Southeast Asian countries, this film was distributed by Purple Plan, a film distributor based in Singapore. The film premiered in Singapore on March 23, 2019, and in Malaysia and Indonesia on March 30, 2019. The film was later made available on iTunes in said regions on April 2020.

In Thailand, Dex Limited Company had bought the copyright to premiere the Thai dubbed version of the movie, The film was released on April 4, 2019.

The film is also the first Kamen Rider movie able to release in mainland China by internet video on-demand service Tencent Video started in on May 8, 2019. An opening night ceremony will hold on May 2 in Hangzhou Anime Festival piror to the digital release.

The movie also release in Taiwanese theater on September 27, 2019.

Hong Kong poster

Southeast Asian countries poster

Thailand poster

KRHGFo-ChinaPoster.jpg

Mainland China poster

Taiwan poster

Errors

• When Sento was transforming into TankTank Form, the 'Tank & Tank' sound from FullFull RabbitTank Bottle is played when he 'caps' it, not when it is closed or put into the Build Driver.
• Shingo somehow knows who Otoya Kurenai is. This should be impossible as Kamen Rider Kiva would not air until nearly a decade from his time. The only explanation is that he heard Ataru mention it as he was talking to Kazumi.
• When Ryuki was using his Strike Vent, he was somehow able to use the Drag Claw Fire attack without aid of Dragreder, which he usually does in the TV series. This error also happened in episode 53 of Kamen Rider Wizard.
• Wizard is shown using the Special Ring while in regular Flame Style, in spite of use of a Dragon style being needed for the ring to work.
• The lower part of the upper body armor of Kamen Rider Cross-Z Magma has a massive dent on it. The reason for it is unknown.
  • The Cross-Z Magma suit would be repaired during the production of Kamen Rider Build NEW WORLD: Kamen Rider Grease.
• Kabuto's undersuit is visibly worn out from repeated use.

Lazer's missing Gamer Driver

• Kamen Rider Lazer Level 2 is visibly missing the Gamer Driver in the racing scene. Despite this, the Rider Machine that Ex-Aid used is Lazer, due to the latter possessing eyes and the transformation announcement of Bakusou Bike was used.

Kiva's missing collar piece

• The collar piece of Kamen Rider Kiva's suit is missing during the bike scene.
• From the beginning of the film, it had been established that it takes place in the real world, where Kamen Rider only exists as a fictional franchise. This causes a logical conflict and paradoxically would make no sense for a Time Jacker, an Imagin, the tomb of Riku, singularity points, Sento Kiryu, and Ryuga Banjo to even exist in the first place. Moreover, Sougo Tokiwa should have lost his memories instead of actually disappearing when Ataru decides to erase his delusions.
• If Shingo Hisanaga was kidnapped in 2000, then his status as a Singularity Point should prevent his 25-year-old self from disappearing from existence in 2018. However there is no mention or even a sight of him anywhere.

Notes

• Ridewatch Count at movie end:
  • Watches in Zi-O's possession: Zi-O, Build, Ex-Aid, Fourze, OOO, OOO Tajadol Combo, Gaim, W, Kuuga, Bike, Phone, Taka, Kodama
  • Watches in Geiz's possession: Geiz, Ghost, Drive, Cross-Z, Faiz, Wizard, Genm, Bike, Phone
  • Watches in Tsukuyomi's possession: Phone
• Fullbottle Count at movie end:
  • Fullbottles in Team Build's possession: All 60 Pandora Fullbottles, Crocodile Crack, FullFull RabbitTank, Dragon Magma, North Blizzard, Genius (depleted), Hazard Trigger, Magma Knuckle, Blizzard Knuckle
  • Sclashjellies in Team Build's possession: Robot, Dragon
• The prominent placement of Den-O, Kuuga, and Double on the film's second poster is intriguing, as their actors Takeru Satoh, Joe Odagiri, and Masaki Suda are currently amongst Japan's most high profile actors, which is a reason as to why they have been unable to reprise their roles in recent crossovers.
  • However, Takeru Satoh did return, with his return being kept a secret until the release of the very last trailer days before the film's premiere. This marks the first time Takeru Satoh has returned to portray Ryotaro Nogami since Saraba Kamen Rider Den-O: Final Countdown in ten years. The character has since then been portrayed by Takuya Mizoguchi in the Cho Den-O Series and replaced by actor Dori Sakurada since then due to Satoh's popularity and agency preventing Toei from being able to afford to hire him to reprise his role in most crossovers.
    • With this being said, Satoh is the only returning actor to physically reprise his role in the film.
  • Masaki Suda had expressed his interest in appearing and received an offer to do so, but ultimately had to decline due to prior commitments filling up his schedule for the next two years. Takeru Satoh's return was to make up for the planned Double surprise that was scrapped in favor of Den-O instead.
    • The scene where Woz accesses the Gaia Library may have been a nod to this. It is also possible that said scene was originally reserved for Philip's planned return, but was rewritten around Woz instead once Suda declined to return.
  • Oddly enough while all the other riders were shown fighting, Double was only shown in three scenes being him arriving to save civilians, him on his bike, and during the all rider kick yet he isn't showing fighting with the other riders (though he might've been fighting offscreen).
    • Due to Suda and Kiriyama not being able to reprise their role in this movie, Double is the only Rider in the 2nd phase Heisei era that does not have their original actors returning in the Heisei Generations films at all.
  • Hiro Mizushima revealed that he had expressed his interest in appearing as Souji Tendou, but ultimately did not receive an offer. He did, however, wish the best for the film's success.
• This Heisei Generations film features the most returning Legend Riders with a total headcount of 17. Heisei Generations only featured 3, and Heisei Generations FINAL only featured 4.
  • This film shares the same headcount with both Kamen Rider × Kamen Rider W & Decade: Movie War 2010 and Kamen Rider × Kamen Rider Gaim & Wizard: The Fateful Sengoku Movie Battle, however, most of them were either A.R versions or that their original actors did not reprise their roles.
  • That being said, this movie holds the record for being the film with the most returning Legend Riders with their original actors reprising their roles, with a total of 9.
    • Many of the Legend Riders in this movie are "played" by archived audio recordings from their original series.
• Out of all the Legend Riders in this film, only Ryotaro Nogami appears outside of Rider form, though he is possessed by Urataros the entire time.
  • This is similar to Eiji's appearance in Kamen Rider × Kamen Rider Wizard & Fourze: Movie War Ultimatum as both Rider never seen transforming on screen, though Ryotaro first appeared in his transformed state before canceling it. However, the only difference would be that a few Riders in this film have several original actors reprising their role while in Movie War Ultimatum only have Eiji's actor returning.
• As of this film, Shun Nishime is the only actor to have portrayed his character in some capacity in all three films of the HG series.
• The reveal of the Legend Riders' actors returning this film is opposite from the previous Heisei Generations movie where the previous film confirms the returning actors at the end of the first trailer while this movie never has anything leaked or appearing at any media until the film's premiere date.
• This is the only Heisei Generations film to not have the movie poster featuring the main Riders in their civilian form as per the secrets kept until the final trailer.
• This is the first Movie War film to:
  • Not have both Riders' names on the title.
    • This is also the first Heisei Generations film to not have the term "with Legend Riders", despite the presence of more Legend Riders than the previous movies of the Heisei Generations Series, ironically.
  • Feature returning characters that are in the pre-Decade era since Movie War 2010 as well as the first Heisei Generations movie to do so.
  • Have one of the actors reprising their role in four consecutive films. In this case, Shun Nishime who returns in this movie voicing his character.
  • Not have leading or general villains from the current series appearing in the movie as well as featuring movie exclusive forms that are based on another Rider other than the predecessor Rider since Sengoku Movie Battle.
  • Not have a post-credits scene since Super Movie Wars Genesis.
  • Not to introduce a new Kamen Rider belonging to the current series.
  • Not having the Main Rider of the current series using any forms that debut in the series prior to this movie.
• The Legend Riders who arrive during the third act of the film are confirmed by Shinichiro Shirakura to not be the original characters, but instead manifestations of the civillians' imaginations of the Kamen Rider franchise.
• Several Legend Riders have new abilities in this movie:
  • Kamen Rider Agito: Able to make a deadly light-saber from his hand.
  • Kamen Rider Hibiki: Able to generate the demon fire on his right foot to perform a Rider Kick.
  • Kamen Rider Kiva: Able to materialize the Demon King Power into bloody chains to attack enemies.
  • Kamen Rider Ghost: Able to form a Cyclone using Eyecon energy.
• As all the riders make their arrival together side-by-side, each of them has something in common.
  • Kamen Rider Ghost & Kamen Rider Ex-Aid: Both riders crossed over in the first Heisei Generations film and appear in most of the films.
  • Kamen Rider Double arrives alone since he's the first Heisei Phase 2 Rider.
  • Kamen Rider Kuuga arrives alone since he's the first Heisei Rider and the focused individual tribute of the movie.
  • Kamen Rider Kiva & Kamen Rider Gaim: Both kind-hearted individuals who wish to mature into better adults and each became a powerful leader in the ending of their series. (ie; Fangire King & Man of the Beginning)
  • Kamen Rider Agito, Kamen Rider Ryuki, Kamen Rider Wizard: All dragon themed riders.
  • Kamen Rider Faiz, Kamen Rider Blade, Kamen Rider Hibiki: All non-human riders (ie; Faiz is the Wolf Orphnoch, Blade is a Joker Undead, and Hibiki is an Oni.)
  • Kamen Rider Kabuto, Kamen Rider Decade, Kamen Rider Fourze: Anniversary Riders (ie; Kabuto celebrated the 35th anniversary, Decade is the 10th installment of the Heisei era, and Fourze celebrates the 40th anniversary.) All 3 riders Secondary riders are also blue or in Diend's case cyan. Three of them also have relation of Space-Time Dimension.
  • Kamen Rider OOO & Kamen Rider Drive: Both relying on the powers of their partner in their Drivers. (ie; the Taka Medal representing Ankh in the OOO Driver & Mr. Belt being the Drive Driver itself.)
  • Kamen Rider Den-O arrives alone since he's the only returning Legend of the film and the big main support of the movie.
• All the riders that fight with each other have something in common.
  • Kamen Rider Ghost & Kamen Rider Ex-Aid: Same as above.
  • Kamen Rider Ryuki, Kamen Rider Hibiki, Kamen Rider Wizard: All use fire-type attacks.
  • Kamen Rider Blade, Kamen Rider OOO, & Kamen Rider Gaim: Have transformed into the kaijin they fought against (ie; Blade was turned into a Joker Undead, OOO was turned into a Greeed, and Gaim was turned into an Over Lord Inves). Three of them also wielded the sword as their main weapon.
  • Kamen Rider Faiz, Kamen Rider Kabuto, Kamen Rider Drive: Speed type Riders
  • Kamen Rider Agito & Kamen Rider Kiva: Their finishers utilizing their series' logo along with both seasons have been written by Toshiki Inoue.
  • Kamen Rider Kuuga, Kamen Rider Den-O, Kamen Rider Decade, Kamen Rider Double, Kamen Rider Fourze are the only ones who fight alone. Interestingly, all of them are exist for anniversary season.
    • Kuuga as the first Heisei Rider to have the proper return of Kamen Rider series.
    • Den-O has the most taking roles' count on any Anniversary of Kamen Rider movie.
    • Decade's main existence is for the 10th anniversary Heisei rider. Decade also has major role some anniversary purpose rider movies.
    • Double had a big role on major anniversary movie until Gaim movie.
    • Fourze has a big purpose to celebrate the 40th year of Kamen Rider Anniversary which affecting his name and his main weaponary items' count.
• Kamen Rider Kuuga is the only Legend Rider silent for most of the film, with no voice recordings used and rarely grunts, but Kuuga's trademark battle cry was heard in one scene.
• When Momotaros as Den-O appeared with the other Legend Riders, he mutters Ii jan! Ii jan! Sugee jan?!, which are lyrics to the opening, Climax Jump.

• The scene where Sougo realizes that Ataru and Shingo are brothers is an homage to Kamen Rider Drive, recreating a recurring sequence from early episodes where Shinnosuke would be surrounded by spinning "flashback clips" while he put together the facts about the current case.
  • Since the plot of the movie, especially the part mentioned above, was a Mystery story, it is also a homage to Kamen Rider W.
• Despite Momotaros, Ryotaro Nogami and Another Den-O's appearance along with this movie being also being a tribute to Kamen Rider Den-O, the Den-O Ridewatch has yet to be retrieved as shown in Zi-O episode 30.
• Despite the fact Urataros appeared in this film, he does not appear physically as he possesses Ryotaro throughout the film.
• This is the first Movie War films to not feature any of the main Riders assuming into their Final Form. Despite this, images of all the main Riders' Final Forms do at least get showcased in the end credits with the exception of GrandZi-O as it wasn't revealed yet with Ohma Zi-O instead being used as a placeholder.
• Interestingly, barring Takeru Satoh, all of the Riders that had their original actors reprise their roles in the film subsequently made returning appearances in their own tribute arcs in Zi-O.
• Footage from the first episode of Den-O is used during Woz's exposition about the Imagins in the True Gaia Memory.
• Kamen Rider Hibiki is the only rider who does not use his Rider Machine, Gaika, during the racing scene, instead using the Akane Taka as a means of transportation.
  • Although Ryuki's primary Rider Machine is the Ride Shooter, it is only accessed by entering the plane between reality and Mirror World. His mode of transportation in the racing scene is replaced with Dragreder, seemingly enough since it's Dragranzer form serves as Ryuki's alternative Rider Machine. 
• As of Team Build appearance in this movie, Sawa Takigawa didn't appear.