Mad World

Mad World (マッドな世界) is the thirty-eighth episode of Kamen Rider Build. It features the debut of Kamen Rider Mad Rogue and the Bat, Cobra, Shimauma and Hasami Lost Fullbottles, the deaths of Fu Washio, Rai Washio and Juzaburo Namba, and Utsumi's resulting insanity as well as Evolto's first on-screen transformation into Kamen Rider Evol Black Hole Form.

Synopsis
Finally, Evolto has transformed into his Phase 4 form, therefore completing his body! Cross-Z, Grease, and Rogue, three strong Riders are no match against his true form! Can they stop Evolto who has regained the ultimate power he used to destroy Mars? Meanwhile, Sento has recovered his memories as Katsuragi once again…

Plot
to be added

Cast

 * Sento Kiryu (桐生 戦兎): Atsuhiro Inukai (犬飼 貴丈)
 * Ryuga Banjo (万丈 龍我): Eiji Akaso (赤楚 衛二)
 * Kazumi Sawatari (猿渡 一海): Kouhei Takeda (武田 航平)
 * Misora Isurugi (石動 美空): Kaho Takada (高田 夏帆)
 * Nariaki Utsumi (内海 成彰): Yuki Ochi (越智 友己)
 * Sawa Takigawa (滝川 紗羽): Yukari Taki (滝 裕可里)
 * Takumi Katsuragi (葛城 巧): Yukiaki Kiyama (木山廉彬)
 * Gentoku Himuro (氷室 幻徳): Kensei Mikami (水上剣星)
 * Soichi Isurugi (石動 惣一): Yasuyuki Maekawa (前川泰之)
 * Juzaburo Namba (難波重三郎): Akira Hamada (浜田 晃)
 * Fu Washio (鷲尾 風): Osamu Adachi (足立 理)
 * Rai Washio (鷲尾 雷): Yuudai Nasuda (奈須田 雄大)
 * Evolto (エボルト), Evol-Driver (エボルドライバー): Tetsuo Kanao (金尾 哲夫)
 * Build Driver (ビルドドライバー): KORBY (コービー)
 * Sclash Driver (スクラッシュドライバー): Norio Wakamoto (若本 規夫)

Suit Actors

 * Kamen Rider Build: Seiji Takaiwa (高岩 成二)
 * Kamen Rider Cross-Z: Eitoku (永徳)
 * Kamen Rider Grease: Satoshi Fujita (藤田 慧)
 * Kamen Rider Rogue: Jun Watanabe (渡辺 淳)
 * Kamen Rider Evol: Kazuya Okada (岡田 和也)
 * Kamen Rider Mad Rogue, Remocon Bro's, Hell Bro's: Yuji Nakata (中田 裕士)
 * Engine Bro's: Daichi Nobe (野邉 大地)

Fullbottles

 * Bottle used:
 * Build
 * Organic: Full Full RabbitTank (Rabbit Mode)
 * Inorganic: N/A
 * Other: Hazard Trigger
 * Cross-Z
 * Organic: Dragon Magma
 * Inorganic: N/A
 * Other: Cross-Z Magma Knuckle
 * Rogue
 * Organic: Crocodile Crack
 * Inorganic: N/A
 * Mad Rogue
 * Organic: Bat
 * Inorganic: Engine
 * Form used:
 * Build
 * RabbitRabbit Form
 * Cross-Z
 * Cross-Z Magma

Sclashjellies

 * Jelly used:
 * Grease
 * Robot

Evolbottles

 * Bottle used:
 * Evol
 * Organic: Cobra
 * Inorganic: Rider
 * Other: Evol Trigger
 * Cross-Z
 * Organic: Great Dragon
 * Other: Great Cross-Z Dragon
 * Form used:
 * Evol
 * Black Hole Form (Phase 4)
 * Cross-Z
 * Great Cross-Z

Gears

 * Gear used:
 * Engine Bro's
 * Gear Engine
 * Remocon Bro's
 * Gear Remocon
 * Hell Bro's
 * Gear Engine, Gear Remocon

Errors

 * to be added