MazingerZ/TropesAToC | MazingerZ/TropesDToF | MazingerZ/TropesGToI | MazingerZ/TropesJToL | '''Tropes M To O''' | MazingerZ/TropesPToR | MazingerZ/TropesSToU | MazingerZ/TropesVToZ | [[ShoutOut/MazingerZ Shout-Outs]]

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!!!''Anime/MazingerZ'' provides examples of the following tropes:
[[foldercontrol]]

[[folder: M]]
* MacrossMissileMassacre:
** Ashura and Brocken's ships and many kikaiju tried that tactic against Mazinger Z. Results varied.
** In the short story ''Manga/NewMazinger'' [[spoiler:Mazinger-Z itself]] used that tactic against an army of monsters.
* MadeOfExplodium: Many Mechanical Beasts exploded easily -and spectacularly- when defeated even if there was no reason for it (other than animating spectacular explosions, of course). Aeros B3 reinforced this trope: it was loaded with explosives since its purpose was diving into Mount Fuji and exploding inside to awaken the volcano and bury the Institute under a tidal wave of lava. A subversion was Balanger M1, that were clusters of underwater, guided mines that did NOT explode but stuck to their target and shocked it with electricity. Several Warrior Monsters and Saucer Beasts from ''Anime/GreatMazinger'' and ''Anime/UFORoboGrendizer'' also followed this trope.
* MadeOfIndestructium: An early Anime example. Mazinger Z is made with Alloy Z, an alloy made of Japanium, a rare metal that can only be found in Japan. Dr. Kabuto discovered the metal and built Mazinger Z with it, thinking Mazinger would become indestructible. Throughout the series, the mecha got hit by giant monsters, missiles, bombs, got burned and electrocuted, got dumped in lava and doused in acid... and even though it got damaged every so often, the Alloy Z endured all of that [[spoiler:until the last chapter,]] and kept Kouji alive. Several times Dr. Hell and his CoDragons would try and get their hands on a sample of Alloy Z to build his {{Robeast}}s with it because Mazinger's armor was too tough to break, shatter or dissolve easily otherwise. The concept of chogokin ("Super Alloy") became so pervasive and widespread all Super Robots followed Mazinger were made of chogokin, and it baptised one whole toy line.
* MadScientist: BigBad Dr. Hell. Dr. Heinrich, who collaborated with Dr. Hell and built a HumongousMecha to defeat Mazinger and prove he was better than Kabuto. And, in some versions, Dr. Juzo Kabuto as well.
* MadScientistsBeautifulDaughter:
** Or in this case, Mad Scientist's Handsome HotBlooded Grandson: Kouji, in the continuities where Juzo is crazier.
** There's another case in Lorelei, Shiro's first love, whose father was a very aloof foreign scientist who's also CoveredWithScars. [[spoiler: And then we learn that not only she's a RobotGirl, but when her father is killed and begs her to have revenge. [[TearJerker It ends up in tears]].]]
* MadScientistLaboratory: Dr. Hell's lab, installed in his base. It was barely seen in the series, though. Dr. Kabuto's lab in the original manga also counts.
* MakeMyMonsterGrow: In episode 12, Baron Ashura used a size-changing ray to turn a tiny robot into a giant {{Robeast}} -Bicong O9-. That ray had been invented by Dr. Hell, who previously tested it with Ashura himself/herself, briefly transforming it into a giant. Throughout the series, BigBad Dr. Hell used more Mechanical Beasts that could increase their size.
* MaleGaze: Often the camera lingered on Sayaka's behind, especially when she wore skirts. It also lingered on women when they were wearing a ModestyTowel after a {{shower|scene}} or changing clothes. Of course, it also happened in the sequels. Given that [[Creator/GoNagai Mazinger's creator]] introduced {{Fanservice}} in the anime, it was to be expected. But to be fair, there also were plenty instances of FemaleGaze in the series, especially in regards to Tetsuya and Kouji getting several {{Shirtless Scene}}s.
* TheManBehindTheMan:
** In the original manga, Baron Ashura shows up before Dr. Hell, leading several Mechanical Beasts and the Iron Masks troops and calling it "Ashura's army". In that chapter he seemed like the BigBad, but one chapter after Dr. Hell is introduced and we learnt Hell was behind the whole operation and he is the real BigBad.
** In the anime, Archduke Gorgon was apparently a Dr. Hell's ally. In the last chapters we learnt he was a DragonWithAnAgenda was working for a GreaterScopeVillain, Great General of Darkness/Ankoku Daishogun.
* ManlyTears: Kouji has often cried these.
* MeaningfulName: Professor Kabuto describes the titular mecha as being powerful enough to make its pilot a devil - "Ma" in Japanese - or a god - "Zin". This is also the first line in Mazinkaiser's first theme song.
** Also, "Kabuto" means "helmet" in Japanese, alluding to the way Koji activates Mazinger by landing his Jet Pilder on it's head like, you guessed it, a helmet.
* MechaMooks: Most of the {{Mook}}s were {{Cyborg}}s, but several of them were RidiculouslyHumanRobots such as the Gamia sisters, [[spoiler:Erika, Lorelei or the Robot posed like Kouji.]] JustAMachine was subverted: When Kouji killed the Gamias, they were so human-looking he felt sickened and disturbed. And he felt sad when some of them died. Also, they were or were not MadeOfExplodium depending on the robot. [[spoiler:Erika did not explode; Kouji robot did, though.]]
* MechaExpansionPack: Probably the originator of this trope: its Jet Scrander is basically a giant robot-sized jetpack, and it was created when Dr. Hell started creating more and more flying Beasts to attack a Mazinger which was helpless against aerial attacks. Creator/GoNagai stated he always intended for Mazinger to fly, but first he needed to establish that the mecha was ''heavy'', so he witheld the Jet Scrander until it was clear that Mazinger was not light.
%%* MechaShow
* MechanicalHorse: Baron Ashura sometimes rode a large, pink, mechanical horse (seen for first time in episode 17). His Iron Mask troops also used mechanical horses in some scenes.
* MechanicalMonster: The {{Robeast}}s are called "Kikaijuu", which is made of the words for "machine" and "monster" in Japanese.
* MenUseViolenceWomenUseCommunication: In the ''Mazinger'' trilogy male characters tend to resort quickly to violence to solve a conflict whereas female characters tend to look for alternate, peaceful means to solve it or regret when a peaceful outcome seems out of reach:
** In ''Anime/MazingerZ'' episode 3 Sayaka tested [[FemBot Aphrodite-A's]] new weapons and stated that she wished that Aphrodite was only used for peaceful purposes. In the prior episode Koji swore that he would use his SuperRobot to fight [[MadScientist Dr.]] [[BigBad Hell]].
** In the first episode of ''Anime/UFORoboGrendizer'' Kouji decided to [[SubvertedTrope try and negotiate with the alien visitors, for once]]. However he chose the worst possible time to change his usual approach, and he got nearly blown up.
** ''[[Anime/UFORoboGrendizer King Vega]]'' was convinced that [[AlienInvasion invading and conquering other planets]] was the only way to find a new home to his subjects after their homeworld's demise. [[TheHero Duke]] was convinced that the only way to stop them from invading Earth was fighting them. Rubina -daughter of the former and [[spoiler:ex-fiancee]] of the latter- thought that mutual annihilation was the only possible result of that war. So that she ''did'' find an alternative option and tried to talk both into a ceasefire. [[spoiler:It did not work.]]
** In a manga story, Duke has to fight [[BrainwashedAndCrazy brainwashed]] Kouji and ''[[Anime/GreatMazinger Tetsuya]]''. Meanwhile, Hikaru laments that there is no way that peace can result from that battle, not matter who wins.
* MentorOccupationalHazard: Dr. Kabuto dies in the FIRST episode after handing Mazinger Z over to his elder grandson. Justified as he was gravely injured before said handing.
* MetaMecha: In ''Manga/SuperRobotRetsuden'' -- a Creator/KenIshikawa AffectionateParody / {{Crossover}} of several Creator/GoNagai {{Mecha Show}}s --, ''Anime/MazingerZ'', ''Anime/GreatMazinger'', ''Anime/UFORoboGrendizer'', ''[[Manga/GetterRobo Getter Robo G]]'' AND ''Anime/KotetsuJeeg'' rode a ''ridiculously, impossibly, massively huge'' TransformingMecha in the FinalBattle.
* MidSeasonUpgrade: Several of them. Mazinger Z was routinely upgraded to allow it fight on different enviroments successfully or to endow it with new weapons to fight increasingly powerful enemies. The most promintent of those upgrades was the [[RazorWings Jet Scrander]].
* MightMakesRight: In a story arc of the GosakuOta manga alternate continuity where Baron Ashura managed to kidnap Kouji he revealed this is how he thinks that the world works. The strong defeats, dominates and exploits the weak. The weak dies, the strong survives, and that is how it is. Therefore, "good" and "evil" are empty words. This is how he excused/justified his crimes.
* MilkingTheGiantCow: Dr. Hell was prone to make this when he was monologuing, mainly in the original manga and ''Anime/{{Mazinkaiser}}''. Especially when night had fallen and he was outdoors. EvilIsHammy, indeed.
* MindControlEyes: In the Mazinsaga, brainwashing, mind-control and hypnotism happened constantly. Usually the way to show the color of the sclera changed or the eyes became completely blank. An example was when Boss was hypnotized by Mechanical Beast Gumbina-M5: his sclera became greenish-yellow instead of white, and his pupils dilated.
* MindProbe: In the ''UFO Robo Grendizer vs Great Mazinger'' feature film, Kouji was kidnapped by [[TheDragon Barendos]], who used a mind-probing machine to extract information about Grendizer and the other Earth's giant war mechas -Great Mazinger and Mazinger Z- from him.
* MirrorCharacter: Both the original series and its sequel use this trope: In ''Anime/MazingerZ'', both Dr. Hell and Juzo Kabuto are geniuses (and the original manga, both of them are {{Mad Scientist}}s with different views on the humanity and on what their talents should be used for); in ''Anime/GreatMazinger'', [[TheHero Tetsuya Tsurugi]] and [[TheDragon Ankoku Daishogun]], both are honorable and powerful warriors think of each other as a WorthyOpponent and share several traits, which explains their mutual respect.
* MissingMom:
** Kouji and Shiro's mother died in a laboratory experiment went wrong. Likewise, Sayaka's mother is nowhere to be found and she and her father live alone, so it is implied her mother died or left.
** In episode 90, [[spoiler:Dr. Hell fabricated a cyborg looked right like her and sent it to the Institute in order to wreak havoc while he made preparations for the final battle. Naturally, that stratagem]] caused much grief, especially to Shiro.
** And in ''Anime/ShinMazinger'' [[spoiler: Kouji and Shiro's mother shows up and gets named -Tsubasa Nishikori. And it is revealed Kouji has inherited his badass traits from HER.]]
* MissionControl: Kouji and Sayaka were assisted by Prof. Yumi (Sayaka's father, who was the OlderAndWiser TheMentor, TheProfessor and TheLabRat) and [[HomeBase Photonic Research Insitute's]] BridgeBunnies, who gave them assistance during missions via communicators.
* MistreatmentInducedBetrayal: Baron Ashura was mostly loyal to Dr. Hell, who felt that [[AvertedTrope he was above]] [[YouHaveFailedMe executing his subordinates]] but not of punishing their failures with strikes, insults or torture. Due to this, Asura sometimes got fed up with being mistreated and mocked and he/she disobeyed orders or acted on his/her own (the final time was when he/she [[spoiler:stole the [[AirCraftAirborneAircarrier fortress Ghoul]] to make a kamikaze attack on the [[HomeBase Institute]]]] in order to show all, Dr. Hell and his/her enemies, who he/she was. In the GosakuOta alternate manga, he/she went a step beyond that and he/she decided to betray Dr. Hell and TakeOverTheWorld on his/her own because he/she was "sick of that crazy old man and [[CoDragons that headless idiot (Count Brocken)]] always mocking him" and he/she intended to give them a lesson.
* MobileSuitHuman: A variant occurs in ''Manga/NewMazinger'': the titular SuperRobot is blasted into a sword-and-sorcery world where he rescues a topless princess (this IS Creator/GoNagai, after all) from invading lizard-men. When the princess attempts to offer herself to the mysterious knight to persuade him to aid her people, he reveals that he is a machine piloted by a human "just the right damn size for a pet!"
* TheMole:
** Dr. Hell had moles installed in several countries, usually infiltrated in centers of scientific research but also in army bases. The most infamous were [[spoiler:Rico,]] an android Dr. Smith -a New Yorker scientist- had hired like his assistant and later infiltrated in the [[HomeBase Photon Atomic Power Research Institute]] to sabotaging the [[MidSeasonUpgrade Jet]] [[RazorWings Scrander]], [[spoiler:Erika]], a female android was supposed to infiltrate into the Institute but got amnesiac and befriended Kouji, and several androids impersonated several characters in order to wreak havoc [[spoiler:(such like Professor Yumi, Dr. Smith or Kouji and Shiro's mother)]].
** ''[[Anime/GreatMazinger The Mykene Empire]]'' also had a mole infiltrated among Dr. Hell's henchmen, [[spoiler:Archduke Gorgon]], and Marquiss Janus tried to infiltrate into the Fortress of Science once by pretending to be an average human girl.
** And in ''Manga/ShinMazingerZero'' Dr. Hell created a mole believing she would work for him but in reality she was always on the heroes' side and was only biding her time before defecting the first chance she got: [[spoiler:Minerva-X]].
* MonogenderMonsters: Nearly all {{Robeast}}s in the trilogy were male. Even Rhine X1 (Donau Alpha1 in the original manga), a Mechanical Monster controled by a girl, was male. Maybe the only exception is Marquisse Janus, one of the CoDragons of ''Great Mazinger'': her HumongousMecha was clearly female-shaped.
* MonsterOfTheAesop: In episode 41 Kouji is undergoing a hard pilot training to be able to fly Mazinger-Z at high altitude. However he resents many aspects of the training, like being on a diet, and he even got in a fight with Sayaka because she wanted him to eat the diet food she had made and he refused. Of course, in that episode Dr. Hell designed a Mechanical Beast -Karma K5- capable to fly higher and faster than Mazinger-Z, and TheDragon Count Brocken crafted a strategy to exploit that advantage. Kouji got hurt and even fainted due to physical strain and exhertion, and later he apologized to Sayaka, admiting he should have listened to her and eaten the meal she had fixed.
* MonsterOfTheWeek: Subverted. Several times Dr. Hell sent several monsters instead of one to attack Mazinger-Z simultaneously. And in the original manga, Kouji fought several monsters at once more often than not.
** {{Mascot Mook}}s: Garuda K7 and Doublas M2. In the Platform/SuperNintendo video game, the first BossBattle was against [[spoiler:Garada K7.]]
* MonumentalDamage:
** In the ''Anime/MazingerZ vs Great General of Darkness'' feature film, ''[[Anime/GreatMazinger the Mykene army]]'' struck Paris, London, New York, Moscow and Tokyo. During their attacks, the Eiffel Tower, the Big Ben, the Empire State Building and the Tokyo Tower got wrecked.
** In the ''Anime/{{Mazinkaiser}}'' movie, the first shot features Paris and the Eiffel Tower burning. The next scenes depict the main characters trying to fight the Mykene [[{{Robeast}} War Beasts]] in different locations. During the battles, the Statue of Liberty crumbled down, a pyramid got its top sliced off, and a chunk of the Great Wall blew up. Later on, Kouji and Great General of Darkness wrecked the Mount Fuji when they fought.
** In the first appearance of Great General of Darkness in ''Anime/ShinMazingerZero'', he split the Mount Fuji in two halves with a single stroke.
* {{Mook}}s: Baron Ashura's Iron Masks and Count Brocken's Iron Crosses.
** MookChivalry: In the anime adaptation, the Iron Masks were pretty pathetic. They always attacked Kouji Kabuto -or his friends- in the same way- noisily charging from the front-, never tried to overwhelm him with sheer numbers and stood quiet when he was making a pretty obvious attack. They wore weapons -swords and rifles- and helmets and Kouji fighting bare-hand ''still'' kicked their butts. Subverted in the manga, though, since sometimes they could be competent. In one of the first chapters Kouji nearly got murdered by only three of them that sneaked into his home overnight (and while two of them engaged Kouji, the third remained hidden to launch a surprise attack when TheHero was distracted). Kouji actually got to be rescued by a secondary character that pulled a BigDamnHeroes moment.
* MotionCaptureMecha: Showed a primitive form of this. Although Kouji used a pair of joysticks and an array of buttons, levers and pedals to move Mazinger-Z, often Mazinger mirrored his motions inside the cockpit and vice versa (one example happened in an episode where a Mechanical Beast burrowed into the ground to try to escape. Mazinger-Z grabbed the Holzon V3's legs and leaned his body and head backwards as it struggled to pull the Mechanical Beast out of the ground. Inside the cockpit, Kouji was in the exact same position, doing the exact same thing).
* MsFanservice: The busty yet brainy twins Lori and Loru, from ''Anime/GreatMazinger'' and ''Anime/{{Mazinkaiser}}''.
%%** Sayaka also wasn't free of this; just watch the 4th OAV.
* TheMultiverse: ''Manga/ShinMazingerZero'' established that the original ''Anime/MazingerZ'' timeline and all alternate timelines and alternate realities visited in the story, are part of a multiverse which includes the universes of ''Anime/GreatMazinger'', ''Anime/UFORoboGrendizer'', ''Manga/GetterRobo'', ''Anime/KotetsuJeeg'', ''[[Anime/MobileSuitGundam UC Gundam]]'', ''Anime/{{Gunbuster}}'' and ''Anime/NeonGenesisEvangelion'', among others.
* MundaneMadeAwesome:
** Although Kouji mostly saves his hotbloodness to when he is fighting or riding his HumongousMecha, he simply can not make some activities in a mundane way. He does not go downstairs like a normal person, he slides down the railing. His idea of bike-riding contests includes hopping off the bike and making a somersault before landing back on his seat, or leaping across a cliff and using his rival's bike to gain momentum. And when he is going to docking in his SuperRobot, he ALWAYS has to shout "Mazin go!" out of the top of his lungs in spite of it being unnecessary. And because he is the TropeCodifier for TheHero in HumongousMecha anime, that kind of attitude bled into other MechaShow protagonists.
** And then you get Boss inventing Brockenball. It is like soccer, except the ball is [[OffWithHisHead Count Brocken's head]] and everyone wins... except Brocken who is the ball.
** In one scene (based on the original manga) of a ''Anime/{{Mazinkaiser}} episode, Sayaka's bra gets cut, and everything -her bra falling, her breasts weirdly bouncing, everybody reacting to the fact- goes bullet time.
* MyFriendsAndZoidberg: Hilariously inverted every time the villains told a sentence along the lines of "Go ahead! Finish Mazinger-Z... and the other two robots!". The other two robots being Aphrodite-A (or Diana-A) and Boss Borot.
* MyHeroZero: Awfully subverted in the ''Manga/ShinMazingerZero'' spin-off. Mazinger Zero is what Mazinger-Z may potentially become: [[spoiler:an EldritchAbomination.]] It happened in the spin-off, after Kouji crossed the DespairEventHorizon. He got in Mazinger-Z and fought like a relentless, raging [[TheBerserker berserker]], fueling Mazinger's consciousness with a stream of negative emotions -rage, grief, despair, bitterness, pain-, until Mazinger-Z awoke, and turned into a demon. The results were... [[TheEndOfTheWorldAsWeKnowIt not pretty]].
[[/folder]]

[[folder: N]]
* NakedPeopleAreFunny: In one manga episode, several characters (Boss being one of them) strip themselves for absolutely no reason. Since Creator/GoNagai introduced and made (in)famous the trope in manga, that gag was entirely expectable.
* NamesToRunAwayFromReallyFast: Dr. Hell. Enough said.
* NearVillainVictory: Often Dr. Hell and his followers were on the brink of winning, and only through of extreme competence and sacrifice of Kouji and his allies or of utter incompetence of Hell's minions, the situation was saved. It happened several times when they very nearly took the Institute over (the most prominent of them happened in episode 57) or invaded it successfully (episode 87), or managed to steal a sample of Alloy Z... However the most notorious of them happened in the last episode when [[spoiler: Archduke Gorgon's {{Robeast}}s destroyed Mazinger-Z and demolished the Institute. Tetsuya's BigDamnHeroes moment saved Kouji's life, but the villains finally were victorious against Mazinger.]] That story was greatly expanded in the Mazinger vs Great General of Darkness movie.
* NervesOfSteel: TheProfessor Gennosuke Yumi. Eighteen-meters-tall killer robots are advancing towards his Institute? Mount Fuji is about of erupting and burying them under burning lava? Squads of armed soldiers are besieging them under the threat of set off an earthquake under their feet if they do not surrender? A spy is aiming one gun towards him? He has been captured and is being used like hostage? It happens all the time! Basically Yumi is a scientist, hence he refuses panicking and instead of it he uses his analytical mind to study the trouble and find a solution quickly. He is so good keeping his cool he can come across like cold and aloof sometimes. Usually he only expresses emotion when one of the kids -Kouji, his daughter Sayaka or their friends- are in serious and inmediate danger.
** Usually you would not associate Kouji Kabuto with this trope since he is a HotBlooded character, but he is ''surprisingly good'' keeping his coolness when he needs thinking quick to save himself or someone else.
* NeverFoundTheBody:
** Kouji, Sayaka and the remainder characters never found Dr. Hell's body and assumed he was dead. Granted, it would be hard to search and find his body given that [[spoiler:in the original manga his SuperVillainLair / HumongousMecha got blown up in middle of the ocean; in the anime series, the CoolAirship where he was fleeing got blown to bits and the remains sank in the ocean; and in another manga version, he was inside of his SuperVillainLair as it drifted spacewards, bleeding to death due to a stab wound.]] Still, he [[spoiler:returned at the last season of ''Anime/GreatMazinger'' like The second DragonInChief of the BigBad.]]
** In episode 31, the bus where three workers of the Institute commuted crashed. The police believed they died, but Prof. Yumi refused to believe that because their bodies were not found. He was GenreSavvy.
* NeverRecycleYourSchemes: Played straight most of the time but sometimes averted by Dr. Hell. See the ForgottenPhlebotinum example for details.
* NeverTrustATrailer: The show used extreme hyperbole in its next-episode previews, and was not above outright lying to the audience to hype up an episode. The most famous example is an episode called "Koji Kabuto Dies in Lava!" This one is so infamous it was endlessly mocked and parodied, culminating in one of the Mazinkaizer stage in ''VideoGame/SuperRobotWarsJudgment'' being called "Kouji Kabuto Dies in Lava!?"
* NewTransferStudent: Kouji transferred to Sayaka's high school after his first battle in order to live closer to the Institute.
* NextTierPowerUp: An early example. Late in the series, Kouji Kabuto learnt to combine his HumongousMecha RocketPunch with a SpinAttack to create Big Swing Rocket Punch (essentially, Kouji spins Mazinger's arms at full speed before shooting its fists). It counts like this trope and not like a MidSeasonUpgrade because it was not a new weapon installed into the mecha, but a new move invented by Kouji drastically increased his power (It was several times stronger than a normal RocketPunch).
* NighInvulnerability: Mazinger-Z was not SO indestructible as Mazinkaiser. Still, he was sturdy enough to withstand a nuclear blast at point-blank range. However, it ultimately subverted the trope: [[spoiler:Dr. Hell crafted increasingly more powerful Mechanical Beasts were capable to seriously harm Mazinger, and finally the Mykene War Beasts destroyed Mazinger-Z.]]
* {{Ninja}}: Blazas S1 and S2, two way-smaller-than-usual {{Robeast}}s Dr. Hell built for a sabotaging mission in episode 46. He specifically stated that they were ninjas. Although not very stealthy (three-meter-tall, blue-and-yellow Mechanical Beasts tend to stand out [[http://garada.net/mediashare/o5-6e3kjgy0boqeow3l7uukwa5i2kl1s0-pre.jpg]]), they played the part, leaping around over walls and from branch to branch, throwing shuriken and infiltrating into the enemy base.
* NintendoHard: The {{Platform/SNES}} game. One single life. Very sparse recovery items. No 1-Ups. No continues. No password system. No save system. If you die, you have to start again from the beginning. Have fun.
* NoDelaysForTheWicked: [[BigBad Dr. Hell]] only has to worry about his subordinates doing how they are told and not betraying him. He has not to worry about them delaying or running in some kind of trouble or unexpected event that ruins the operation, or mishandling, losing or breaking down the technology and equipment that he hands over to them. They will always arrive at the appointed place at due time, and no operation will fail due to lack of coordination between several squads (although once, in an alternate manga version, an operation failed because one of his CoDragons took too long to be ready and the another lost his patience and attacked before time). His spies and [[TheMole moles]] don't run into troubles (suspicious guards, delayed flights...) either when they have to infiltrate into the HomeBase to performing spying or sabotaging missions.
* NoEndorHolocaust: Averted. The show has no troubles showing how much death and destruction would cause a humongous war mecha rampaging through the land or a battle between giant robots in a highly-populated city, and often Kouji has to suffer the consequences of it.
* NoIndoorVoice: Seems to be a pre-requisite of any HotBlooded character, and Kouji isn't the exception.
* NoisyNature: Subverted in the first episode. Dr. Kabuto's village -where he built the titular HumongousMecha- was set -in the anime version- in Aokigahara, a forest at the base of Mount Fuji is ''infamous'' -among other things- because it is ''eerily'' silent due to absence of wildlife. So when Dr. Kabuto heard noises near from his house -not long after his grandson told him that their maid had been murdered-, he knew there were intruders near and his life was in danger.
* NoMrBondIExpectYouToDine: In a storyline of the GosakuOta manga, Baron Ashura kidnaps Kouji Kabuto. Then Ashura treats him like a guest and invites him to have dinner with him to talk him into joining him (Kouji even was provided with a tuxedo). In one moment Ashura asks Kouji if the meal is to his liking and Kouji replies it would be more to his liking if he was not handcuffed. Ashura retorts he is not SO stupid to let him free.
* NonActionBigBad: Dr. Hell is a certified genius... and a seventy-year-old man who isn't physically fit at all. He always sends his henchmen, minions and war machines off into battle because he can't fight his enemies face-to-face.
* NoRangeLikePointBlankRange: In his battle against Debira X1, the flying Mechanical Beast was too quick for Kouji to hit, so Kouji waited as the Mechanical Beast lunged at him until the robot was at point-blank range to blast it with Mazinger's Breast Fire. Kouji used this tactic sometimes when an enemy was too fast or too sturdy.
* NoSeatBelts: Depending on the version, this trope was played straight or averted. In the original series [[HumongousMecha Mazinger-Z]]'s seat did not seem having seatbelts, but in ''Anime/{{Mazinkaiser}}'' and other reimaginations you could clearly see [[TheHero Kouji Kabuto]] strapping his seatbelt before launching.
* NotHyperbole: In the first episode, Dr. Kabuto tells Kouji who pilots Mazinger-Z has the potential to become a god or a devil. Such like later retellings and versions of the history (especially ''Z-Mazinger'' or ''Manga/ShinMazingerZero'') have proved, Dr. Kabuto was ''NOT'' exaggerating.
* NotDrawnToScale: The applied scale is not consistent at all. There are plenty examples of it: In episode 10, Dian N4 grabbed skyscrappers and moved them to elsewhere with one of his hands, and it seemed to be the same size as the buildings it was carrying. Later, though, the Beast was just as tall as Mazinger-Z (18 meters).
* NotWhatItLooksLike: It happened sometimes in the original series, but ''Manga/ShinMazingerZero'' gave a particularly hilarious example. In a chapter Kouji and Minerva-X are together inside the cockpit. During the battle Mazinger moves a lot and Minerva lands on Kouji on a ''very awkward and embarrassing'' position (face-down and on top of Kouji, with her head hovering above his groin and Kouji's head stood between her legs). Sayaka -who had just arrived and destroyed three Mechanical Beasts in a fit of jealous rage- sees them, and they -after displaying tremendously comical OhCrap stares- try to explain it is not what it looks like, and Minerva was not human but she actually is a Super Robot created by TheProfessor Dr. Kabuto to be Mazinger-Z's BattleCouple. Sayaka's reaction was an incredulous FlatWhat before trying to murder them.
* NothingCanStopUsNow: [[TheDragon Baron Ashura]] tends to utters that sentence in two types of situation: when BigBad Dr. Hell is showing another of his {{Robeast}}s to [[{{TwoFaced}} him/her/it]] (cue Mazinger Z obliterating the Mechanical Beast twenty minutes later); or when one of his/her/its schemes succeeds or is about of succeeding. Examples of the second use are when a Mechanical Beast has utterly trashed Mazinger Z, when he managed to steal a sample of Alloy Z...
** On the other hand, [[TheDragon Great Marshall of Hell]] from ''Anime/GreatMazinger'' was more careful about using it. Seemingly he learnt his lesson [[spoiler:since he was a resurrected Dr. Hell]]
* NowLetMeCarryYou: For all times Kouji shouted "You are always getting in the way!", "Stop hindering me!", "I could have won without your help!", etc. to Sayaka there were only so many times where Sayaka had been hurt or her FemBot disabled and he carried her back home in arms (one episode closed with a snapshot of Mazinger carrying Aphrodite in arms while they arrived to the Institute). In one ocassion the roles also were reversed in one ocasion where Sayaka carried Kouji.
* NowOrNeverKiss: In the manga version of the "Mazinger-Z vs Great General of Darkness" movie, Sayaka kisses Kouji right before he goes off to fight the Mykene army because both think he'll die this time for sure.
* NuclearWeaponsTaboo: Curiously, it was averted. In the episode 36 it was clearly stated Dr. Hell was fabricating nukes, and a nuclear missile was detonated, even. And in another episode, he placed several nukes in the pool where Mazinger was launched from.
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[[folder: O]]
* ObviouslyEvil: During his time overseeing a research team, despite his blue skin and "somewhat telling name", the scientists didn't seem to suspect Dr. Hell might just be evil.
* OffscreenVillainDarkMatter: Dr. Hell has the resources to build over one hundred Kikaijuu, two {{Super Villain Lair}}s, several fortresses and war machines, and he has an infinite supply of {{Mook}}s. It was explained on a chapter of one of the manga versions Count Brocken -one of his CoDragons- had taken over several European crime organizations long before the beginning of the manga and was using their resources to fund Hell's operation. And regarding how Hell has an endless army of {{Mook}}s... It was justified, but the answer is pure NightmareFuel: [[spoiler:All his subordinates are corpses he has turned into {{Cyborg}}s personally. Often they were people he or his subordinates had slain. Hence, he has an infinite supply of soldiers.]]
* OhCrap:
** It is used many times. A memorable one happened when Baron Ashura was relaxing in his/her submarine fortress, feeling safe due to the knowledge of Mazinger-Z could not reach them underwater because it had not been built to swim or dive... when an Iron Mask showed him through one screen Mazinger-Z was swimming towards them.
** And in other episode, Ashura kidnapped Aphrodite A and examined it to learn how building a Photon engine. Later, when Mazinger Z broke into his/her base, a short-circuit burnt the computer they were using, destroying what information they had obtained. Ashura's expression was priceless (one of his/her {{Mook}}s got to drag him/her away because he kept staring and gaping at the ruined computer).
** A considerably more tragic happens when Prof. Yumi and Prof. Gordon are arguing about a Mechanical Beast is sinking ships... and then Prof. Gordon realizes his wife and their daughter are traveling to Japan by sea.
* OhNoNotAgain:
** Boss's robot (Boss Borot) gets wrecked nearly each episode, so often Boss utters one sentence along the lines of "Why it is always me?", or "Not again!". He even lampshades it in one ''Anime/UFORoboGrendizer'' manga chapter: He is going to fight ''Anime/GreatMazinger'' (long story), and he is knocked down with a mere backhand. Then he says "The most painful thing is I knew what this would happen."
** In the ''Anime/GreatMazinger vs Manga/GetterRobo'' features, Boss Borot's arms gets eaten by a {{Robeast}}. Later his HumongousMecha gets rebuilt, he fights that {{Robeast}} again... And his robot's limb gets eaten again. Boss yells: "What? AGAIN?"
* OldSchoolDogfight: Dog fights happened often between Mazinger-Z and other giant robots, although Kouji also used his mini-ship to try to take some {{Robeast}}s down, placing behind them and shooting his missiles. His first real aerial battle -in episode 34- consisted entirely of him and [[{{Robeast}} Genocyder F9]] dog-fighting.
* OmnidisciplinaryScientist: Dr. Hell. He could make nearly anything he could imagine, and he dominated multiple fields of science. On the other hand, Dr. Kabuto [[spoiler:and his son Kenzo]] and Professor Yumi subverted the trope, being experts on one specific field and needing help and experts' advice in other matters, and using the trial-and-error method to make scientific breakthroughs.
* OncePerEpisode: Every episode Kouji shouted "Pilder On!" and "Mazin Go!" to dock in its HumongousMecha and activate it. In some episodes he shouted it even more times if he had to sortie often.
* OneLetterName: {{Fanon}} often refers to Anime/MazingerZ as simply "Z" for the sake of time. Anime/GreatMazinger's name is reduced to simply "Great". Oddly, Manga/GetterRobo G is usually called "Getter G" instead of just "G".
* OneOfTheBoys: Sayaka. She prefers hanging out with boys rather than girls, and she likes bikes right alongside her male friends.
* OnePersonBirthdayParty: In episode 19, the SmallNameBigEgo ButtMonkey Boss tries to get people to purchase tickets to attend his birthday party. However everyone runs away from him, and he can not figure out why. [[TheHero Kouji]] tries to explain to him that people don't like getting bullied into paying for a party they do not want to go to start with. Finally, Kouji agrees to attend Boss' party out of pity and even performs a couple of tricks with his bike so that more people come. However, during the party, Kouji gets summoned to the [[HomeBase Institute]], and he leaves. As a result, everybody else leaves too, leaving Boss alone.
* OnlySaneMan: Prof. Yumi, Boss and Shiro alternated that role in different episodes.
* OneManArmy: It is both played straight and subverted. Mazinger is certainly powerful enough to trash an entire army... but when Kouji has to fight more than two {{Robeast}}s at once, he struggles (Mazinger versus Devilman) or loses (Mazinger versus Great General of Darkness, Mazinkaiser...)
* OneSteveLimit: When adapted into ''Tranzor Z'', Koji was renamed to Tommy Davis. However, for some strange reason, Professor Yumi was renamed Doctor Davis. Despite absolutely nothing indicating Tommy was related to him or Sayaka/Jessica.
* OOCIsSeriousBusiness: Tetsuya Tsurugi is serious, grim-looking and moody, and he seldom smiles. So when he grins, everyone freaks out and dons OhCrap stares. Mainly Warrior Monsters, since it usually means they are about of dying horribly and painfully.
* OurHeroIsDead: The "Kabuto Kouji Dies In Lava!" episodes (yes, they did this ''twice'', though the second time was done with tongue firmly planted in cheek) are so infamous for this that they border on MemeticMutation.
* OurMonstersAreDifferent: This show was packed with monsters of very different kinds.
** OurCentaursAreDifferent: Kentol Γ7 was a centaur-like, blue Mechanical Beast. It was armed with a spear and a spiked shield, was capable of flying, and its helmet's horns shot beams that could control other machines.
** OurDemonsAreDifferent: In the {{Crossover}} movie with ''Manga/{{Devilman}}'' showed up the enemies of that series. The demons in ''Manga/{{Devilman}}'' are ancient organisms who can fuse with other living things and inanimate objects to gain many abilities and powers from what they've fused with, taking them over completely. Thus they look like the chimerical creatures from ancient texts. They have psychic powers normally of varying strengths. However, human consciousness is lethal to them. But a person who's scared or otherwise loses control of their higher mental functions can be taken over. Should that person have a pure heart, however...they will posess the demon's flesh and gain their superpowers! And thus was born [[TitleDrop Devilman!]].
** OurDragonsAreDifferent: Several Kikaiju resembled dragons, and the aspect and weapons of each one of them was different: Gelbros J3 looked like a bypedal dragon with three heads could shoot heat waves, soundwaves or acid streams; Drago Omega 1 resembled an Eastern, flying dragon shoot missiles...
** OurGiantsAreBigger: In ''Manga/NewMazinger'' (an one-shot alternate story published in TheEighties), an explosion transports Kouji Kabuto to an alternate dimension inhabited by giant beings. The human beings were sixty-foot-tall and just so big as Mazinger-Z (in fact, when Kouji saved one princess, she though Mazinger-Z was an armored knight, and she asked him removing his helmet to see his face). They were mostly good-natured and intelligent, although their technology was at a Middle Ages level, and they were in war against a race of LizardFolk.
** OurMermaidsAreDifferent: In a story arc of the GosakuOta version, a race of giant FishPeople from another dimension called Chip Kamoy attempted to invade Earth. In order to communicate with human beings, they kidnapped a human girl and transformed her into a mermaid: her legs were replaced by a long fish tail, and fins grew from her head. She was definitely good, though, and tried to help TheHero Kouji Kabuto. [[spoiler:Unfortunately her "masters" executed her in punishment.]]
* OurMonstersAreWeird: The Dragonosaurus from a {{Crossover}} movie featuring ''Anime/MazingerZ'', ''Anime/GreatMazinger'', ''[[Manga/GetterRobo Getter Robo G]]'' and ''Anime/UFORoboGrendizer'' characters and HumongousMecha was a... amorphous, gigantic, flying red-and-black blob with a huge face on the body and several grey-indigo, snake-like, creasted heads sprouting from it. It was told it was a previously-thought-extinct PrehistoricMonster had mutated cause industrial waste spilled in the seas, but still what the heck that thing was?
[[/folder]]
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