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'''''Mazinkaiser''''' is a seven-episode SuperRobot {{OAV}} re-imagining of the ''MazingerZ'' story released in 2001. It tells the story of how [[TheHero Kouji Kabuto]] discovers and masters his grandfather Juzo Kabuto's final legacy, the most powerful of the Mazingers.

Mazinkaiser originally appeared in ''[[VideoGame/SuperRobotWars4 Super Robot Wars F Final]]'', when developer Banpresto asked ''Mazinger'' creator GoNagai to design a new mecha for Kouji to use as a MidSeasonUpgrade. The idea was for Mazinger Z to be upgraded through exposure to [[GetterRobo Getter Rays]] into a new monstrous form, later redubbing it the Mazinkaiser. ''VideoGame/SuperRobotWarsAlpha'', the next "major" installment of the franchise, revamped the origin of the robot into being the ''original'' Mazinger SuperPrototype that ended up being too difficult to control, necessitating its sealing away until Kouji finds and tames it (this version also conveniently fills out a long-standing plot gap of "what was the accident that nearly killed Kenzo and his wife?" in ''Mazinger'' mythology). The idea was such a hit with fans that Nagai quickly [[CanonImmigrant incorporated it into canon]] via in anime and manga form, using the ''Alpha'' version as its origin story.

During a massive attack by Mechanical Beasts created by MadScientist Dr. Hell, the Mazinger Z and GreatMazinger sortie to battle, but are overrun through sheer numbers. Kouji's Hover Pilder is ripped from the Mazinger Z and hurled from the battlefield, and the machine is captured by Dr. Hell, who turns it into a mechanical devil for his own purposes and sends it against the Photonic Research Institute. Outnumbered, [[GreatMazinger Tetsuya]] [[TheLancer Tsurugi]] heads to battle with a damaged Great Mazinger when a new, insanely powerful and more demonic looking Mazinger suddenly appears with Kouji at the helm.

The seven-episode OAV was followed up by the movie ''Mazinkaiser vs. [[GreatMazinger The Great General of Darkness]]'', a remake of the 1974 film ''Mazinger Z vs. The Great General of Darkness'', where the [[GreatMazinger Mycenae Empire]] invades while Kouji is vacationing in Paris, forcing him to fight his way back to Japan and take the Mazinkaiser into battle once more.

See also ''MazinkaiserSKL'', a three-episode OAV released in 2011, an entirely different re-imagining with all-new characters.
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''Mazinkaiser'' contains examples of:

* AbusivePrecursors: The Mycenae Empire
* AndThisIsFor: Kouji finishes off [[spoiler:Ankoku Daishogun]] with this.
* AscendedExtra : The blonde twins Lori and Loru. Back in the original manga, they were nothing but [[RedShirt Red Shirts]]who last for 2 chapters. [[spoiler:They fill the same role in the movie, but in a more glorious manner.]]
* AllYourColorsCombined: In the first episode Mazinger-Z and Great Mazinger used their ChestBlaster weapons in combination to melt a Mechanical Beast to slag.
* BarbieDollAnatomy: Subverted when Sayaka's bikini top is pulled off; brief scene with very prominent nipples. Same for when the three androids from episode 3 are destroyed.
* BeachEpisode: Infamous for its brief, nude moment with Sayaka.
** Let's face it, that was probably the main reason this episode was made. Especially when you consider that when it happens, they play it up like someone just found the Ark of the Covenant.
* BigDamnHeroes: [[spoiler:"Shin" Great Mazinger]] in the last few episodes.
** [[spoiler:Tetsuya does this in the first episode too]]
** [[spoiler:Boss, in the movie.]]
* TheBladeAlwaysLandsPointyEndIn: Made in an EPIC way in Mazinkaiser vs Great General of Darkness.
* BoomerangComeback: [[spoiler:Great Mazinger pulls one off in the movie.]]
* BreathWeapon: Rust Tornado, an UpToEleven version of Mazinger's Rust Hurricane, combined with Great Mazinger's Great Typhoon: Mazinkaiser blows several jets of particle-charged wind from its mouth grill that corrodes the enemy into nothingness (assuming the terrifying gale winds did not break it apart first). Its huge destructive force dug a ditch through a side of Mount Fuji.
* BroughtDownToBadass : For some reason, Tetsuya [[spoiler:switched back into old Great Mazinger in the movie.]] He still made the most [[CrowningMomentOfAwesome awesome]] moments AND as kickass as ever.
* CanonImmigrant
* ConvectionSchmonvection: In one episode, Mazinkaiser got dunked in lava. Since Mazinkaiser was MadeOfIndestructium, Kouji could survive for a short while in that enviroment, but all knew they had to get him out of the volcano QUICKLY, or he would die.
* DistractedByTheSexy: It happened fairly often in the original manga. Usually it was Sayaka who was the (unwilling) distraction -either because her clothes were torn or because she was involuntarily naked-, but sometimes it was done by enemies to distract Kouji. One of those scenes was animated in the BeachEpisode: Kouji accidentally undoes Sayaka's top[[note]]he was trying to grab her shoulder and missed[[/note]]; she's actually more upset by Boss getting a look at her breasts than she is by Kouji, even though he [[DistractedByTheSexy weaponizes her boobs]] in order to escape the enemy fortress.
* ExactlyWhatIAimedAt: In the movie, Tetsuya is fighting [[FishPeople Angoras]] and [[BigCreepyCrawlies Scarabeth]], two commanders of the Mycenae Empire army. Tetsuya throws Great Mazinger's [[PrecisionGuidedBoomerang Great Boomerang]] and right after shoots [[BreathWeapon Great Typhoon]]. Both attacks miss, both commanders laugh and ask where he is aiming at... when Great Mazinger's boomerang slices them both from behind. As he is dying, Scarabeth -Mycenae army's best tactician- realizes Tetsuya had missed his boomerang throw on purpose, and he shot Great Typhoon to change the boomerang's trajectory. So he caught them by surprise and killed both of them at once.
* FamilyUnfriendlyDeath: [[spoiler: Lori and Roll]] in TheMovie, which doubles as TearJerker.
* FanDisservice: A ''naked Baron Ashura''?! MY EYES!! MY BEAUTIFUL EYES!!!!
** Fortunately for us, it doesn't show the squicky bits at all. In fact, it's [[RuleOfFunny hilarious]] in context.
** The BeachEpisode has Boss in a swimsuit.
* TheGuardsMustBeCrazy: Apparently Baron Ashura's mooks can't tell the difference between Boss in a helmet and one of their co-workers. The mooks that were ''assigned to guard him and Kouji specifically, no less''.
* {{Gainaxing}}: Lori and Roll do this plenty of times, as do the three androids.
** Even Venus A does this in the beach episode.
* JAMProject: "Fire Wars", "The Gate of Hell", and "Mazin Kenzan".
* LargeHam: If the dub acting was any hammier, you could serve it for Christmas dinner. Special attention goes to Dr. Hell, who is chewing so much scenery that his fortress should be collapsing around him.
* LatexSpaceSuit: The pilot suits for both the male and female characters.
* LavaIsBoilingKoolAid: In one episode Mazinkaiser (with Kouji inside it) was tossed into the crater of Mount Fuji (paying homage to an episode of the original series). Kouji fainted due to the extreme heat and sheer pressure... and that was it. The characters pointed out not even Mazinkaiser could endure that for long and they had to get Kouji out of the magma RIGHT AWAY, though. The lava also seems less dangerous than it should be (it is too bright, too fluid and not viscous enough). However, given what kind of punishment Mazinkaiser shrugs off throughout the series, withstanding a lava bath seems almost trivial.
* LetsGetDangerous: Two twins Lorry and Roll are fanservicy, yeah. But when it's time to get serious, they show that they're more than just FanService: see episode 5, i.e.
** They also show their stuff in the movie, what with piloting a Fembot and all. Too bad that's where they die.
* MadeOfIndestructium: Mazinkaiser takes this concept and RUNS WITH IT. Nothing seems being capable to even scratch it. This video should show it convincingly: [[http://www.youtube.com/watch?v=qiZwGqhTP5I&feature=related]]
** [[WordOfGod Go Nagai himself]] has remarked that Mazinkaiser is the "indestructible shield" while [[GetterRobo Shin Getter]] is the "unstoppable sword", a reference to the Chinese version of the [[http://en.wikipedia.org/wiki/Irresistible_force_paradox irresistible force paradox]].
* MadScientist: Dr. Hell. Juzo Kabuto was one, as well.
* {{Mooks}}: Baron Ashura hires very, very dim ones.
* MsFanservice: Two of 'em: Lorry and Roll. Sayaka also had her moments, specially the fourth OAV.
* MythologyGag: KABUTO KOUJI DIES IN MAGMA! ... not.
* PunchClockVillain: Ashura's mooks, which are undoubtedly part of why they're so utterly stupid.
* RedshirtArmy: The Mazinger Army.
* {{Robeast}}: The Mechanical Beasts.
* ShooOutTheClowns: Inverted. The first two thirds of the movie are ''[[DarkestHour very]]'' dark. Then Boss comes back. The rest is history.
* ShowyInvincibleHero: Taken to the limits with this. Mazinkaiser, [[WordOfGod the ultimate defensive force according to Go Nagai]], is still awesome to watch in action thanks to great music and creative opponents.
* SuperMode: The SRW version has two: "Devil" mode, which makes the Mazinkaiser go sentient and berserk, and "God" mode, which is theorized to be on par with a full-powered SRW [[GetterRobo Shin Getter Robo]]). SRW games also has Mazinpower that activates at 130 will giving a power boost.
* VideoGame/SuperRobotWars: Created for ''F Final'', but also appears in the ''Alpha'' series, ''VideoGame/SuperRobotWarsJudgment'', ''[[VideoGame/SuperRobotWarsGC Super Robot Wars GC/XO]]'',''VideoGame/SuperRobotWarsW'' and ''VideoGame/SuperRobotWarsL''.
** While the ''Super Robot Wars'' series in general has a problem with damage numbers, its pretty notable that Mazinkaiser is possibly the biggest and long running offender of StatisticallySpeaking. Thanks to its SuperMode that increase attack, Not only it deals damage higher than GlassCannon like GetterRobo, it also tanks better. Not to mention the issue of having some of its weaker attack dealing higher damage than other mech's final attack most notably the sun-killing Goldion Crusher from GaoGaiGar being slightly weaker than Final Kaiser Blade.
* {{Tsundere}}: Variation. Sayaka was a Type A (tsuntsun) in the original series, but she mellows out a bit and is mostly a Type B (deredere), like in the manga.
* TelescopingRobot: Mazinkaiser had THREE blades hid into its body (two of them into its shoulders and the bigger into its chest), and its midsection stored one giant missile.
* TruerToTheText: Despite the introduction of Mazinkaiser, in some ways this is closer to the original ''Mazinger Z'' manga than the TV series - like a much closer art style to Nagai's, and Gamia Q appearing.
* UseYourHead: Tetsuya ''used'' it with Kouji in the manga. Agreed, both of them were riding their respective HumongousMecha, but still...
* WeaponOfChoice: Mazinkaiser's arsenal consists of...
** {{BFS}}: The (Final) Kaiser Blade from the OVA.
** BreathWeapon: The Rust Tornado, which still has the corrosive component
** ChestBlaster: The Fire Blaster; notably, it's theorzied the Fire Blaster can punch a hole through to the Earth's core; it's [[WaveMotionGun so powerful]] that even though the main blast goes over a bunch of mechanical beasts, the sheer heat of it ''still'' melts them anyhow).
*** Also technically the Gigant Missile, though it comes from Kaiser's navel.
** DualWielding: The paired Kaiser Blades from the movie; the ''VideoGame/SuperRobotWars'' original version calls them Shoulder Slicers.
** EyeBeams: The Photon Power Beam, which doesn't get a new name.
** KillItWithIce: The Freezing Beam from the movie.
** PowerFist: The Kaiser Knuckle in the movie.
** PrecisionGuidedBoomerang: In the movie, the [[MidSeasonUpgrade Kaiser Scrander]] can be pulled off and used as one. [[spoiler:It even slices cleanly through the flying fortress Demonika.]]
** RocketPunch: The Turbo Smasher Punch which, like Great's Screw Crusher Punch, [[EverythingsBetterWithSpinning makes everything better by spinning]].
** SphereOfDestruction: The Kaiser Nova from the manga (and ''VideoGame/SuperRobotWars''), where Kaiser charges its Photonic Energy to full power and releases it in a single gigantic burst.
* TheWorfEffect: Both Mazinger-Z and Great Mazinger suffered this within the first two episodes, with both machines falling to Dr. Hell's Mechanical Beasts' army. Also, Tetsuya had been established in both ''Anime/MazingerZ'' and ''Anime/GreatMazinger'' like a highly-skilled AcePilot, CombatPragmatist BloodKnight and TheDeterminator, HotBlooded {{Badass}}. In ''Anime/{{Mazinkaiser}}'' the animators showed a situation was dangerous and an enemy a real threat by severely injuring or incapaciting Tetsuya, or showing him struggling.
** TheMovie took it [[UpToEleven Even further]] by crushing Great, Venus, ''and'' the Mazinger Army. At lest half of them didn't survive.
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