|This article is about a/an episode in Kamen Rider Gaim.|
New Generation of Riders Appear! (新世代ライダー登場！ Shin Sedai Raidā Tōjō!) is the twelfth episode of Kamen Rider Gaim. Following a brief sneak-peek during the end credits of Kamen Rider × Kamen Rider Gaim & Wizard: The Fateful Sengoku Movie Battle, this episode introduces the concept of the Genesis Driver, Sonic Arrow, and the Energy Lockseeds, as well as Takatora Kureshima's first transformation into his new form, Kamen Rider Zangetsu Shin. Also debuting are the Kurokage Troopers.
Kouta and Mitsuzane attempt to warn the Beat Riders about Yggdrasill's manipulation, only to find that Yggdrasill is deploying Kurokage Troopers to silence anyone who knows the truth as Zangetsu uses a new belt model. Meanwhile, Mai encounters the mysterious girl who resembles her.
After reviewing what they have learned of the Yggdrasill Corporation using them and the other Armored Riders, Kouta and Mitsuzane choose not to transform for a while. However, an Inves attack forces Kouta to transform in order protect a group of girls from the Inves before he and Mitsuzane observe Yggdrasill's new security force, the Kurokage Troopers, destroy all traces of Helheim Forest's flora after the nearby crack closes. At Drupers, believing Zangetsu might try to silence anyone who knows about the Yggdrasill Corporation's secrets, Mitsuzane convinces Kouta not to tell anyone of what they have learned until they know more of the company's intentions.
Although Mitsuzane also attempts to convince him to discard his Sengoku Driver so not to play into the company's hand, Kouta refuses, as he believes that it is the only means to fight the Inves. After watching Gaim defeat a group of high class Inves, Mitsuzane becomes conflicted. Elsewhere, Mai finds Kaito at a place where the Takatsukasa family shrine once stood before the Yggdrasill Corporation tore it and the surrounding forest down. She reveals to Kaito that she was the shrine maiden and tells him of her ideals before he scoffs them and leaves. Just after Kaito leaves her, Mai encounters the mysterious girl who tells her to forget about Kouta and Kaito and leave the city while she is still in control of her fate.
In the events that follow, after his defeat by Team Baron, Hase finds himself abandoned by his Raid Wild teammates. Jonouchi begins to work at the Charmant, hoping to align himself with Oren as Armored Riders, but Oren is still too enamoured with Zangetsu. Meanwhile, at the Yggdrasill Corporation's hologram room, Takatora is satisfied with the final testing of his new Genesis Driver and Melon Energy Lockseed. As the perfected Armored Rider Zangetsu Shin, Takatora tells Sengoku that the Beat Riders have now served their purpose.
- Kouta Kazuraba (葛葉 紘汰 Kazuraba Kōta): Gaku Sano (佐野 岳 Sano Gaku)
- Kaito Kumon (駆紋 戒斗 Kumon Kaito): Yutaka Kobayashi (小林 豊 Kobayashi Yutaka)
- Mitsuzane Kureshima (呉島 光実 Kureshima Mitsuzane): Mahiro Takasugi (高杉 真宙 Takasugi Mahiro)
- Mai Takatsukasa (高司 舞 Takatsukasa Mai): Yuumi Shida (志田 友美 Shida Yuumi)
- Takatora Kureshima (呉島 貴虎 Kureshima Takatora): Yuki Kubota (久保田 悠来 Kubota Yūki)
- Zack (ザック Zakku): Gaku Matsuda (松田 岳 Matsuda Gaku)
- Peko (ペコ Peko): Saku Momose (百瀬 朔 Momose Saku)
- Hideyasu Jonouchi (城之內 秀保 Jyonouchi Hideyasu): Ryō Matsuda (松田 凌 Matsuda Ryō)
- Ryoji Hase (初瀬 亮二 Hase Ryōji): Atsushi Shiramata (白又 敦 Shiramata Atsushi)
- Ryoma Sengoku (戦極 凌馬 Sengoku Ryōma): Tsunenori Aoki (青木 玄徳 Aoki Tsunenori)
- Oren Pierre Alfonzo (凰蓮・ピエール・アルフォンゾ Ōren Piēru Arufonzo): Metal Yoshida (吉田 メタル Yoshida Metaru)
- Sengoku Driver Equipment Voice (戦極ドライバー各種アイテム音声 Sengoku Doraibā Kanren Aitemu Onsei): Seiji Hiratoko (平床 政治 Hiratoko Seiji)
- Genesis Driver Equipment Voice (ゲネシスドライバー各種アイテム音声 Geneshisu Doraibā Kanren Aitemu Onsei): Shin-ichiro Miki (三木 眞一郎 Miki Shinichirō)
- Narration (ナレーション Narēshon): Hōchū Ōtsuka (大塚 芳忠 Ōtsuka Hōchū)
- Fans: Chiemi Toi (戸井 智恵美 Toi Chiemi), Ai Kuriki (栗城 亜衣 Kuriki Ai)
- Kaito Kumon (Child): Kurando Katayama (片山 蔵人 Katayama Kurando)
- Mai Takatsukasa (Child): Shiori Saeki (佐伯 栞 Saeki Shiori)
- Lock Used:
- Kurokage Troopers:
- Zangetsu Shin:
- Melon Energy
- Arms Change:
- As part of Super Hero Time, this episode aired alongside Zyuden Sentai Kyoryuger episode 43 Brave 43: The Blade of the Soul! Roar, Streizer. The following episodes had taken a Christmas hiatus and returned to TV in time for the new year.
- Viewership: 3.9%
- Closing Screen Lockseed Collection:
- This episode begins the Yggdrasill Saga, the second story arc of the series.
- This is the first episode of the series where Gaim uses a Rider Kick in Orange Arms.
- Ten Kurokage Troopers are shown at the beginning, the most ever shown at a single time.
- This is the first episode that Mitsuzane doesn't transform into Ryugen since gaining his power in episode 4.
- This is the first episode that Gaim doesn't change Arms since the debut of his Pine Arms form.
- This episode has the longest time (30 seconds, more than 15 seconds preview in normal) preview in all of Gaim episodes.
Kamen Rider Gaim Volume 3 features episodes 9-12: The Monster Inves Capture Battle!, Rider Great Assembly! Revealing the Mystery of the Forest!, The Truth Behind the Christmas Game and New Generation of Riders Appear!