|Ultra Galaxy Mega Monster Battle|
|Created by:||Tsuburaya Productions|
|Opening Theme:||"Eternal Traveler" by Project DMM|
|Ending Theme:||"JUMP UP" by Lekkazan|
|Country Of Origin||Japan|
|Number Of Episode||13|
|Running Time||25 minutes|
|Original Air Date||December 20, 2008 – March 14, 2009|
|Preceed by||Ultraseven X|
|Succeed||Ultra Galaxy Mega Monster Battle: Never Ending Odyssey|
Ultra Galaxy Mega Monster Battle (ウルトラギャラクシー大怪獣バトル Urutora Gyarakushī Daikaijū Batoru?) is the first season of its series that is the 24th entry in the Tsuburaya Productions' long-running Ultra Series. It is an adaption of the video game Mega Monster Battle: ULTRA MONSTERS. The show first aired on December 1, 2007 and concluded on February 23, 2008. On December 20, 2008, the second season titled Ultra Galaxy Mega Monster Battle: Never Ending Odyssey (ウルトラギャラクシー大怪獣バトル ＮＥＶＥＲ ＥＮＤＩＮＧ ＯＤＹＳＳＥＹ Urutora Gyarakushī Daikaijū Batoru Nebā Endingu Odessei?) premiered. Ultra Galaxy was the first Ultra Series to be shown as a pay-per-view service.
- Rei (レイ?): A mysterious man with amnesia who joined as a member of ZAP SPACY. He is hostile to monsters and uses his Battle Nizer to fight them. He is haunted by the image of the giant buried in the rock. So far, he has only summoned Gomora (ゴモラ?), Litra (リトラ Ritora?), and Eleking (エレキング Erekingu?).
- Hyuga (ヒュウガ Hyūga?): The captain of the Space Pendragon. He is hot-blooded man who is excellent in martial arts and has overcome many hardships all over the universe. Members have to call him "Boss." His full name is Hiroshi Hyuga (日向 浩 Hyūga Hiroshi?).
- Haruna (ハルナ?): The subcaptain of the Space Pendragon. She is a strict ace pilot and is Hyuga's right-hand man. Although she was skeptical of Rei, she was rescued from Neronga by him and reconciled with him. Her full name is Jun Haruna (榛名 ジュン Haruna Jun?).
- Oki (オキ?): The rookie crew member of the Space Pendragon. He is a monster maniac who was majoring in monsterology at university. He reasoned that the giant in Rei's memory is Ultraman. His full name is Koichi Oki (隠岐 恒一 Oki Kōichi?).
- Kumano (クマノ?): The engineer of the Space Pendragon. His full name is Masahiko Kumano (熊野 雅彦 Kumano Masahiko?).
- Hiroki (ヒロキ?): The leader of Vincent Island which was the officer of the resources transportation base in Belargo City, and Jun's elder brother. He has once served as the subcaptain of the Space Pendragon under Hyuga. His full name is Hiroki Haruna (榛名 ヒロキ Haruna Hiroki?).
- Ato (アトウ Atō?): The subleader of Vincent Island who was a scientist of Belargo city.
- Karen Mikura (御蔵 カレン Mikura Karen?): A girl who is one of the survivors in Belargo City. She had taken care of a mysterious baby temporarily. She discovered the mysterious giant and heard the mysterious giant's voice.
- Kate (ケイト Keito?): A mysterious woman who interferes with Rei using every possible means and has a Battle Nizer like Ray's. She uses the appearance of a bio-plant researcher named Maki Azusa (アズサ マキ Azusa Maki?). While she appears to be evil in her first appearance, it is revealed that she is Rei's older sister and her goal is to reawaken Rei as Reimon and like him is an Alien Reiblood. So far, she has only summoned Fire Golza (ファイヤーゴルザ Faiyā Goruza?), Gan-Q (ガンQ Gankyū?), and Zetton (ゼットン?). In the finale, she uses Zetton to battle Rei's Gomora and wins, only to be attacked by King Joe Black (キングジョーブラック Kingu Jō Burakku?) who fights Zetton to a standstill. In the end, she succeeds in her goal and Reimon is awakened but Gomora becomes EX Gomora and kills Zetton, seemingly killing Kate in the process. However, in Ultra Galaxy Mega Monster Battle Neo, it was revealed she'd survived.
On Vincent Island is a mysterious giant buried in the rocks that appears in Rei's visions. It had created a spiritual barrier on Vincent Island to protect it, sacrificing its life in the process. It is eventually revealed to be Ultraman, and is a key in Rei's reawakening as Reimon.
- The Lawless Monster Planet (怪獣無法惑星 Kaijū Muhō Wakusei?)
- The Fifth Crewman (五人目のクルー Goninme no Kurū?)
- The Transparent Monster Attacks! (透明怪獣襲撃！ Tōmei Kaijū Shūgeki!?)
- Bemstar Has Arrived! (ベムスター参上！ Bemusutā Sanjō!?)
- The Trap in Belargo City (ベラルゴシティの罠 Berarugo Shiti no Wana?)
- Another Monster Tamer (もう一人の怪獣使い Mō Hitori no Kaijūtsukai?)
- The Stone Which Calls Monsters (怪獣を呼ぶ石 Kaijū o Yobu Ishi?)
- The Underwater King (水中の王者 Suichū no Ōja?)
- The Pendragon Doesn't Rise to the Surface! (ペンドラゴン浮上せず！ Pendoragon Fujōsezu!?)
- Unexpected Reunion (予期せぬ再会 Yoki Senu Saikai?)
- Ultraman (ウルトラマン Urutoraman?)
- Reiblood (レイブラッド Reiburaddo?)
- Planet Escape (惑星脱出 Wakusei Dasshutsu?)
- Rei (レイ?) - Shota Minami (南 翔太 Minami Shōta?)
- Haruna (ハルナ?) - Saki Kamiryo (上良 早紀 Kamiryō Saki?)
- Oki (オキ?) - Toru Hachinohe (八戸 亮 Hachinohe Tōru?)
- Kumano (クマノ?) - Mitsutoshi Shundo (俊藤 光利 Shundō Mitsutoshi?)
- Hyuga (ヒュウガ Hyūga?) - Hiroyuki Konishi (小西 博之 Konishi Hiroyuki?)
- Kate (ケイト Keito?) - Mayu Gamo (蒲生 麻由 Gamō Mayu?)
- Karen (カレン?) - Natsumi Yamada (山田 夏海 Yamada Natsumi?)
- Hiroki (ヒロキ?) - Shigeki Kagemaru (影丸 茂樹 Kagemaru Shigeki?)
- Ato (アトウ Atō?) - Hideaki Ishii (石井 英明 Ishii Hideaki?)
- Gomora - Kazunori Yokoo (横尾 和則 Yokoo Kazunori?)
- Reimon - Hiroyuki Inomata (猪又 浩之 Inomata Hiroyuki?)
- Monsters - Daisuke Terai (寺井 大介 Terai Daisuke?), Ryo Nishimura (西村 郎 Nishimura Ryō?), Hiroshi Suenaga (末永 博志 Suenaga Hiroshi?), Kenya Soma (相馬 絢也 Sōma Kenya?), Tomomi Ota (太田 智美 Ōta Tomomi?), Shinya Iwasaki (岩崎 晋弥 Iwasaki Shinya?), Daisuke Fukuda (福田 大助 Fukuda Daisuke?), Satoshi Yamamoto (山本 諭 Yamamoto Satoshi?), Tatsunari Fukushima (福島 龍成 Fukushima Tatsunari?), Hideyoshi Iwata (岩田 栄慶 Iwata Hideyoshi?)
- Opening theme
- "eternal traveller" (エターナル・トラベラー Etānaru Toraberā?)
- Ending theme
- "JUMP UP" (ジャンプ アップ Janpu Appu?)