|This article is about a/an episode in Mashin Sentai Kiramager.|
|WARNING: This episode contains scenes of murder and character death. Viewer discretion is advised!|
Episode 4: Princess of the Lost World (亡国のプリンセス Bōkoku no Purinsesu) is the fourth episode of Mashin Sentai Kiramager. It features the debut of Darkness Megabeast Mecha Smog Jouki, the White Kiramai Stone, and the leader of Yodonheim, Emperor Yodon.
The Kiramagers return to CARAT HQ after successfully defeating a Jamen monster. While there, they take in the information about the Yodon Army's recent attack and seemed to have noticed the lack of a subsequent Jyajyu creature. However, what seemed to have taken its place was a jet-black Kiramai Stone, which is floating ominously in the air. "It can't be..." Mabushina's own anxiety starts to form as she rushes to the scene with the Kiramagers. It was just then that the jet-black Kiramai Stone transforms into a locomotive-type vehicle with a strange face, and is headed straight for the Kiramagers. Then the individual who descends from within it is none other than Mabushina's uncle, and the traitor to Crystallia... now Yodonheim's Demon General Galza, who reveals his scheme to assassinate the princess to ensure her kind's permanent extinction, for she is the sole survivor of her home-planet's massacre.
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- Juru Atsuta (熱田 充瑠 Atsuta Jūru): Rio Komiya (小宮 璃央 Komiya Rio)
- Tametomo Imizu (射水 為朝 Imizu Tametomo): Rui Kihara (木原 瑠生 Kihara Rui)
- Sena Hayami (速見 瀬奈 Hayami Sena): Yume Shinjo (新庄 由芽 Shinjō Yume)
- Shiguru Oshikiri (押切 時雨 Oshikiri Shiguru): Atom Mizuishi (水石 亜飛夢 Mizuishi Atomu)
- Sayo Oharu (大治 小夜 Ōharu Sayo): Mio Kudo (工藤 美桜 Kudō Mio)
- Muryou Hakataminami (博多南 無鈴 Hakataminami Muryō): Daimaou Kosaka (古坂大魔王 Kosaka Daimaō)
- Princess Mabushina (マブシーナ姫 Mabushīna-hime, Voice): Inori Minase (水瀬 いのり Minase Inori)
- King Oradin (オラディン王 Oradin Ō, Voice): Tomokazu Sugita (杉田 智和 Sugita Tomokazu)
- Mashin Fire (魔進ファイヤ Mashin Faiya, Voice): Kenichi Suzumura (鈴村 健一 Suzumura Ken'ichi)
- Mashin Shovellow (魔進ショベロー Mashin Shoberō, Voice): Mitsuo Iwata (岩田 光央 Iwata Mitsuo)
- Mashin Mach (魔進マッハ Mashin Mahha, Voice): Kenji Akabane (赤羽根 健治 Akabane Kenji)
- Mashin Jetter (魔進ジェッタ Mashin Jetta, Voice): Genki Okawa (大河 元気 Ōkawa Genki)
- Mashin Helico (魔進ヘリコ Mashin Heriko, Voice): Yuki Nagaku (長久 友紀 Nagaku Yuki)
- Demonic General of Betrayal Galza (裏切りの鬼将軍ガルザ Uragiri no Oni-Shōgun Garuza, Voice): Yuuichi Nakamura (中村 悠一 Nakamura Yūichi)
- Mask of Darkness Carantula (闇の仮面遣いクランチュラ Yami no Kamen Tsukai Kuranchura, Voice): Yasuhiro Takato (高戸 靖広 Takato Yasuhiro)
- Princess Mabushina (Child): Mikoto Sasaki (佐々木美琴 Sasaki Mikoto)
- Kiramai Red: Shigeki Ito (伊藤茂騎 Itō Shigeki)
- Kiramai Yellow: Masato Tsutamune (蔦宗 正人 Tsutamune Masato)
- Kiramai Green: Ryoko Gomi (五味 涼子 Gomi Ryōko)
- Kiramai Blue: Yasuhiro Takeuchi (竹内 康博 Takeuchi Yasuhiro)
- Kiramai Pink: Ayumi Shimozono (下園 愛弓 Shimozono Ayumi)
- King Oradin, Mashin Gattai Kiramaizin: Yohei Fujita (藤田 洋平 Fujita Yōhei)
- Princess Mabushina: Mizuho Nogawa (野川 瑞穂 Nogawa Mizuho)
- Demonic General of Betrayal Galza, Darkness Megabeast Mecha Smog Jouki: Keizo Yabe (矢部 敬三 Yabe Keizō)
- Mask of Darkness Carantula: Naoko Kamio (神尾 直子 Kamio Naoko)
- Paleolith Basra: Shinsuke Kusano (草野 伸介 Kusano Shinsuke)
- Juru exposed Galza's lies by noting that Crystalians make a distinct jingling noise when they laugh. After being exposed Galza laughs and indeed the jingling noise can be heard. However, when he laughs a second time, once gaining his armor, the jingling noise can not be heard.
- Viewership: 3.3%
- As part of Super Hero Time, this episode aired alongside Kamen Rider Zero-One episode 29, Our Dreams Don't Break.
- Pre-Credits Scene: Mabushina and Muryou discuss Sena and Tametomo's argument about the unseen Neanderthal Jamen from the beginning of the episode.
- The title of this episode is a reference to the film Aegis (亡国のイージス Boukoku no ījisu, lit. "Aegis of the Destroyed Country").
- The first jersey Muryou wore resembles a jersey that players on the Denver Broncos wear. His second jersey resembles a Cincinnati Bengals jersey.
- This episode marks the first appearance of the Basra Type Jamen Beasts.