Child of Battle (戦いの子 Tatakai no Ko) is the fifteenth episode of Ultraman Geed
Riku Asakura and the others begin their search of Moa Aizaki who had been sucked into Space Time. In the alternate dimension, Moa Aizaki was with the exhausted Alien Shadow Kuruto.
While regrouping with Laiha and Leito, Riku's identity is once again uncovered by Zena, who ask them their help in finding Moa. He establishes contact with the Nebula House (RE.M. included) and signified the teleported location in a remote forest. RE.M.'s inability to sense Moa's life signal is due to Kuruto's Signal Interference Shroud, a device used by Alien Shadow operatives to hide their presence. Alongside two other accomplices, Kuruto's actual plot is to retrieve Zegan, a monster of Shadow's final weapon. Zena had the device and initially planned to destroy it, leaving the monster for good but eventually kept it in case of Belial's return. With no time left, Zena can't use any nearby resource and was forced to ask for Zero and the Nebula House's cooperation.
Meanwhile, Moa found herself in the forest but cannot move further due to a leg injury. Since Zena would not hand him over the device, Kuruto attempted to approach Moa for the information but in the end, the password was something he unexpected: Gabra Cano (child of battle), a Shadow term used to express as child soldiers. Moa recounts her first meeting with Zena back then when she tended an alien without harboring any sense of fear. Zena saw this as an opportunity to recruit her into AIB, to which she quickly accepts. It was then when she started to bond with Kuruto for real by cracking jokes at Zena's expense, mocking their past experience under the latter's tutelage.
With Zegan approaches, Kuruto tried to run but finds himself surrounded by everyone. Zena once more approached his former student to turn over a new leaf but believed that he is beyond redemption and piloted Zegan despite the injuries he sustained. With no other options, Zena begged Geed and Zero to stop his former student and the two agreed. In the middle of the battle, Geed and Zero assumed their strongest forms and block Zegan's Zegant Beam but as they form a barrier around said monster, it becomes clear that Kuruto try to orchestrate his own suicide. His actions caused both him and Zegan to obliterate and what remained from him was the wrecked controller device that Zena salvaged.
Zero meets Zena the next day as he ask for Moa's well-being. Zena acknowledges that her optimism laid a huge impact to AIB as Leito encouraged him to tell her that. At the park, Riku met Moa once again, whose leg injury had been treated. While still recovering from the inability to help Kuruto, Moa still firm that there is hope for humans and aliens to coexist.
- Riku: "Ultra Capsule Navi! Here are today's capsules!"
- Riser: Ultraman Victory
- RE.M.: Ultraman Victory. Height: Microscopic to Infinite. Weight: 0 to Infinity. A warrior who protects the underground using the power of monsters this Ult-Lance.
- Riku: Next up is this one!
- Riser: Kaiser Belial!
- RE.M.: The Galactic Emperor, Kaiser Belial. Height: 55 Meters. Weight: 66,000 tons. The rulers of a massive empire established in Another Space.
- Riku: Be sure to watch next time!
- Riku Asakura (朝倉リク Asakura Riku)/Ultraman Geed (voice): Tatsuomi Hamada (濱田龍臣 Hamada Tatsuomi)
- Laiha Toba (鳥羽ライハ Toba Raiha): Chihiro Yamamoto (山本千尋 Yamamoto Chihiro)
- Moa Aizaki (愛崎モア Aizaki Moa): Mayu Hasegawa (長谷川眞優 Hasegawa Mayu)
- Leito Igaguri (伊賀栗レイト Igaguri Reito): Yuta Ozawa (小澤雄太 Ozawa Yūta)
- Zena (ゼナ ): Hideyoshi Iwata (岩田栄慶 Iwata Hideyoshi)
- Alien Pegassa Pega (ペガッサ星人ペガ Pegassa Seijin Pega Voice): Megumi Han (潘 めぐみ Han Megumi)
- RE.M. (レム Remu Voice): Suzuko Mimori (三森すずこ Mimori Suzuko)
- Ultraman Zero (ウルトラマンゼロ Urutoraman Zero Voice): Mamoru Miyano (宮野真守 Miyano Mamoru)
- Alien Shadow Zena (シャドー星人ゼナ Shadō Seijin Zena Voice): Shintaro Asanuma (浅沼晋太郎 Asanuma Shintarō)
- Alien Shadow Kuruto (シャドー星人クルト Shadō Seijin Kuruto): Hiroki Suzuki (鈴木 裕樹 Suzuki Hiroki)
- Caster: Chisato Kawai (川合千里 Kawai Chisato)
- Ultraman Geed: Hideyoshi Iwata (岩田栄慶 Iwata Hideyoshi)
- Ultraman Zero: Akira Okabe (岡部暁 Okabe Akira)
- Pega: Satomi Maruta (丸田聡美 Maruta Satomi)
- Zegan: Hiroyuki Arai (新井宏幸 Arai Hiroyuki)
- Ultraman Geed
- Ultraman Zero
- Alien Pegassa Pega
- Alien Shadow Zena
- Alien Shadow Kuruto (Last appearance)
- Alien Zelan (Flashback)
- During the scene where Geed descends to slash Zegan, a line of explosives can be clearly seen.
- In the Indonesian dub that aired on RTV, this episode was titled "Moa's Rescue Mission".