|Number of episodes:||23|
|First episode:||Terror of Fuhrer Geisel and Riddle of the Despar Army|
|Original airing:||April 9, 1974 - September 24, 1974|
Inazuman Flash (イナズマンフラッシュ, Inazuman Furasshu?) was produced by Toei Company Ltd. and broadcast on NET (now TV Asahi) from April 9, 1974 to September 24, 1974, with a total of 23 episodes. A direct and darker continuation of the first series, after the defeat of Emperor Bamba and his mutant minions Inazuman goes on to fight the evil robots of the Despar Army with the help of cynical cyborg Interpol agent Makoto Arai and the new ability to hurl lightning bolts.
Inazuman is, in reality, young college student Goro Watari, a mutant. He lost his mother as a child and had other dark moments in his childhood (he had a childhood girlfriend named Teresa who was taken away by an American soldier during the US occupation of Japan). But when the Neo-Human Empire begins its attacks on mankind with its Fantom Army foot soldiers and mutated monsters, he puts his psionic powers to the test. First, he performs a henshin pose (crossing his arms in front of his chest) and uttering the phrase, "Gōriki Shōrai!" (剛力招来? literally "Summon Mighty Power"), he is wrapped in a blue cocoon, which bursts, revealing the creature Sanagiman. He resembles an armored brown larva mutant with a white belt which has a biomechanical power meter on it.
Sanagiman is able to absorb the kinetic energy of any attack used against him, and when he gathers enough energy into his belt, he crosses his fists in front of his chest, uttering the phrase, "Chōriki Shōrai!" (超力招来? literally "Summon Ultimate Power"), and spreads them aside, with his chest emitting a swirl of colorful energy. Sanagiman's exterior then explodes to pieces, and in his place is Inazuman He is a moth-like mutant wearing the same power belt as Sanagiman and resembles a blue humanoid with huge colorful oval eyes, prominent lightning-shaped antennas, black gloves & boots, yellow lightning-shaped marks that stream down his body, and a yellow scarf he can transform into various weapons, including a whip-like chain.
Goro is a member of the Youth League, a Science Patrol-style group of similarly psychic-powered young people, and has a telepathic link with the sentient flying car Raijingo which can fire missiles and bite bad guys with the teeth built into its mouth-like grill ("Raijin" is the Japanese god of thunder).
The Despar Army is the Nazi-inspired organization who wishes to build Despar City.
- Führer Geisel: The Hitler-like leader of the Despar Army. He wears a Nazi-inspired uniform, has white skin, and has only one eye. He loses his ear in episode 18.
- Despar Army Soldier: The red-and-black striped gas mask faced foot-soldiers of the Despar Army. In the original Inazuman, they were depicted similar to the Fantom Army Soldiers, but that changed during the transition between Inazuman and Inazuman Flash.
- Robot Fighters
Regular / Semi-regular
- Goro Watari (渡 五郎 Watari Gorō?) / Sanagiman (サナギマン? Voice) / Inazuman (イナズマン? Voice): Naoya Ban (伴 直弥 Ban Naoya?)
- Makoto Arai (荒井 誠 Arai Makoto?): Koichi Uenoyama (上野山 功一 Uenoyama Kōichi?)
- Chizuko Arai (荒井 千津子 Arai Chizuko?): Fumie Noguchi (野口 ふみえ Noguchi Fumie?)
- Rumi Arai (荒井 ルミ Arai Rumi?): Satomi Ueda (上田 里美 Ueda Satomi?)
- Führer Geisel (ガイゼル総統 Gaizeru Sōtō?): Mitsuo Ando (安藤 三男 Andō Mitsuo?)
- Udespar (ウデスパー Udesupā?) / Udespar Beta (ウデスパーβ Udesupā Bēta?), Sadespar (サデスパー Sadesupā?): Masaki Iwana (岩名 雅記 Iwana Masaki?)
- Udespar Alpha (ウデスパーα Udesupā Arufa?): Takeshi Watabe (渡部 猛 Watabe Takeshi?)
- Combined Udespar (合体ウデスパー Gattai Udesupā?): Shu Wada (和田 周 Wada Shu?)
- Narrator (ナレーター Narētā?): Ichiro Murakoshi (村越伊 知郎 Murakoshi Ichirō?)
- Ryoko Suzuki (鈴木 良子 Suzuki Ryōko?): Junko Yashiro (八代 順子 Yashiro Junko?)
- Sister (シスター Shisutā?): Machiko Naka (中 真千子 Naka Machiko?)
- Lin Qing (林清 Rinsei?): Homare Hasegawa (長谷川 誉 Hasegawa Homare?)
- Old Man Keisuke (啓介老人 Keisuke Rōjin?): Hiroshi Ayukawa (鮎川 浩 Ayukawa Hiroshi?)
- Yoshie Ono (小野 良江 Ono Yoshie?): Kazumi Toshima (戸島 一実 Toshima Kazumi?)
- K Maya (K麻耶 K Maya?): Yuri Yamashina (山科 ゆり Yamashina Yuri?)
- Tetsuya (哲也?): Jinya Sato (佐藤 仁哉 Sato Jin'ya?)
- Jun Shiratori (白鳥 ジュン Shiratori Jun?): Rei Maki (牧 れい Maki Rei?)
- Karen (カレン?): Keiko Torii (鳥居 恵子 Torii Keiko?)
- Terror of Führer Geisel and the Mysterious Despar Army! (恐怖のガイゼル総統と謎のデスパー軍団! Kyōfu no Gaizeru Sōtō to Nazo no Gundan!?)
- Terrifying Safari!! Great Operation at Sea!! (戦慄のサファリ! 海中大作戦!! Senritsu no Safari! Kaichū Daisakusen!!?)
- 500 Hydrogen Bombs!! Great Underground Battle! (水爆500発!! 地底大戦争! Subaku Gohyappatsu!! Chitei Daisensō!?)
- The Mysterious Airship? To Space!! (謎の飛行船? 宇宙へ!! Nazo no Hikōsen? Uchū e!!?)
- DES Missiles: Great Aerial Battle!! (DES（デス）ミサイル大空中戦!! Desu Misairu Daikūchūsen!!?)
- Geisel's Great Fort (ガイゼルの大要塞 Gaizeru no Daiyōsai?)
- Great Decisive Battle! Udespar vs. Inazuman!! (大決戦! ウデスパー対イナズマン!! Daikessen! Udesupā Tai Inazuman!!?)
- Udespar Siblings! Cross Hurricane!! (ウデスパー兄弟! クロスハリケーン!! Udesupā Kyōdai! Kurosu Harikēn!!?)
- Boys Circus and Great Multi-Operation (少年サーカスとマルチ大作戦 Shōnen Sākasu to Maruchi Daisakusen?)
- Udespar Siblings' Defiant Shape (ウデスパー兄弟の挑戦状!! Udesupā Kyōdai no Chōsenjō!!?)
- Beautiful Cyborg! The Alter-ego at Dawn!! (美しいサイボーグ! 暁に分身す!! Utsukushii Saibōgu! Akatsuki ni Bunshin su!!?)
- Phantom City: Despar City (幻影都市デスパー・シティ Genei Toshi Desupā Shiti?)
- White Darkness!! Witch Sings the Babysitter Song (白い闇!! 鬼女がうたう子守歌 Shiroi Yami!! Kijo ga Utau Komoriuta?)
- Great Aerial Battle!! Combine Udespar Tactical Squad (大空中戦!! 合体ウデスパー戦略部隊 Daikūchūsen!! Gattai Udesupā Senryaku Butai?)
- Big Flood Operation!! (大洪水作戦!! Daikōzui Sakusen!!?)
- The Mysterious Woman: Whose Name is the Despar Secret Agent (謎の女 その名はデスパー秘密捜査官 Nazo no Onna Sono Na wa Desupā Himitsu Sōsakan?)
- Blue Pupils of the Invader (青い瞳のインベーダー Aoi Hitomi no Inbēdā?)
- Red Queen: Ballad of Assassination (レッドクイン 暗殺のバラード Red Kuin Ansatsu no Barādo?)
- Inazuman Joins the Despar Army!! (イナズマン デスパー軍団に入隊す!! Inazuman Desupā Gundan ni Nyūtai su!!?)
- Butterfly and Guillotine: Flower Hell Operation (蝶とギロチン 花地獄作戦 Chō to Girochin Hana Jigoku Sakusen?)
- The Deceased Squad - Route 047 (死者部隊ルート047 Shisha Butai Rūto?)
- Kill the Burdensome Ones: Geisel's Supreme Command (邪魔者は殺（け）せ ガイゼルの至上命令 Jamamono wa Kese Gaizeru no Shijō Meirei?)
- Farewell Inazuman: Geisel's Last Day (さらばイナズマン ガイゼル最期の日 Saraba Inazuman Gaizeru Saigo no Hi?)