* AlternativeCharacterInterpretation:
** Many fans treat Kouji Kabuto as an arrogant, sexist JerkWithAHeartOfGold and a ChasteHero based on the first anime series, in spite of later retellings and remakes mostly based on his original manga incarnation where he was less of a sexist [[StayInTheKitchen toward Sayaka]] and less of a jerk, being nicer and tactful - yet also more of a pervert as befitting a GoNagai creation.
** Some fans think Sayaka Yumi is very stuck-up and bratty and more interested about showing off than saving the world, whereas other fans state she was simply an ActionGirl had a very short supply of patience to deal with a loud-mouthed IdiotHero and an aloof father cared for her but was MarriedToTheJob.
** The interpretation of the relationship between Kouji and Sayaka also varies depending on the fan. Many consider matter-of-factly they are the OfficialCouple, but some argue Kouji did not love Sayaka back. They base that interpretation on him teasing and mocking Sayaka constantly and showing interest towards any girl but Sayaka (Hitomi, Misato, Erika... even Minerva-X) and he was nicer to Maria in ''Anime/UFORoboGrendizer''. The former group of fans are quick to point out most of shows used the ChasteHero trope back then - depicting TheHero like someone who is too busy saving the world to get too concerned about romance-, he baited Sayaka because he WAS a sexist jerk -and not because he was not interested in her-, , the BelligerentSexualTension was an UnbuiltTrope back then, the anime series showed plenty moments where Kouji cared for Sayaka, the GoNagai manga (that Is the original story whereas the anime is an adaptation) did way more obvious he liked Sayaka, and in the GosakuOta manga they DID kiss. And they remind Kouji was more mature when he met Maria (when the first series began he was sixteen. In Grendizer he was already nineteen) and she was supposed to fill SAYAKA's role. And let's not get started with the ones think there was HoYay between Duke Fleed and him.
** Boss is the PluckyComicRelief to some fans. To other fans he is an unsung hero who always helps to the main characters and has nothing for his efforts in spite of some of his actions contributed to save the world. And depending who you talk to, he played straight or subverted the HopelessSuitor and StalkerWithACrush with Sayaka.
** Dr. Hell is a LargeHam and a CompleteMonster wanted to TakeOverTheWorld to force the whole humankind to [[KneelBeforeZod bow down to him]], but in ''Anime/ShinMazinger'' he was actually trying to save the world (although he thought conquering it was the proper way to accomplish that). Some fans actually feel SympathyForTheDevil, thinking it was unfair he worked so hard, scheming complex plans and strategies and crafting incredible scientific breakthroughs only to be defeated, crushed and humiliated over and over and over by a loud-mouthed, Jerkass IdiotHero with a cool HumongousMecha. People who know about his Backstory also tends to see him like TheWoobie.
** Yuri, Sayaka's cousin and BrattyHalfPint is regarded by some fans like an insufferable, unbearable brat. Other fans see her like TheWoobie, a poor little girl yearns for attention because her parents neglect her constantly.
* AscendedMeme: The Boss saved the world joke is pretty funny when you realize that he really saved the world during the original series and sequel, even moreso in ''Anime/{{Mazinkaiser}}''.
* AwesomeMusic + EarWorm: [[http://www.youtube.com/watch?v=GKKshSa-qWA Majin GO! Majin GO! MAJINGA Z!]]
** Despite all its flaws, the Tranzor Z dub at least had a [[http://www.youtube.com/watch?v=KgjhYxh7I64 catchy theme]] in its opening.
* CargoShip: A bizarre example. Minerva-X is in love with Mazinger-Z, a machine. She is also a machine, but sentient.
* CompleteMonster: Dr. Hell worked for Hitler. Before transforming Count Brocken into a cyborg, he stated he was going to use what he had learnt by experimenting with Jews in Austchwitz. And he grinned while he talked! His lackeys are not quite innocent, either.
* EnsembleDarkHorse: In a meta sense. Go Nagai originally made this simply to blow off steam while writing the [[CrapsackWorld horribly depressing]] ''{{Devilman}}'' manga and directing the anime. Mazinger ''blew'' Devilman out of the water in terms of popularity, which Nagai always had [[CreatorBreakdown odd feelings]] about.
** Boss, the resident JokeCharacter is extremely popular with the fandom.
* FirstInstallmentWins: ''MazingerZ'' has got a lot of sequels (''GreatMazinger'', ''UFORoboGrendizer''...), alternate series (''GodMazinger'', ''MazinkaiserSKL'') and reimaginations (''{{Mazinkaiser}}'', ''ShinMazinger'', ''ShinMazingerZero''...). None of them has had the success, the impact or the popularity enjoyed by the original series.
** Even the remakes (''Mazinkaiser'', ''Shin Mazinger'', ''Shin Mazinger Zero'') tend to focus on the Mazinger Z era, as Kouji gets put front and center while his successor protagonists Tetsuya of ''Great Mazinger'' and Duke Fleed of ''Grendizer'' are sidelined or completely ignored.
* GermansLoveDavidHasselhoff: In Spain, everybody loves Mazinger Z, [[http://upload.wikimedia.org/wikipedia/commons/c/c8/Mazinger_Z_in_Tarragona_%2801%29.jpg to the point where they've built a 10-metre fiberglass statue of it]].
* HarsherInHindsight: In episode 17, Holzon V3 unleashed a chain of strong earthquakes left in ruins several Japanese cities and killed a lot of people. Forty years later, after a chain of earthquakes and tsunamis turned several Japanese cities in rubble, that episode looks even more tragic.
** And Dr. Kabuto's manor, where he built Mazinger-Z, was located on the Forest of Aokigahara. Why is that relevant? [[http://en.wikipedia.org/wiki/Aokigahara Read and get creeped out]]. At least it seems clear why Juuzo chose that place: nobody would try to bother him or spy on him.
* HilariousInHindsight: Boss had a long-haired, female cousin. ''[[Anime/NeonGenesisEvangelion Her name was Misato.]]'' Probably because his seiyuu in ''Anime/{{Mazinkaiser}}'' is Creator/FumihikoTachiki AKA Gendo.
** Also, the name Mazinger is similar enough to the name of pope Benedict XVI/Josef Ratzinger, that it lead to a flood of jokes. [http://nonciclopedia.wikia.com/wiki/Papa_Mazinga] Especially the film title "Mazinger vs Devilman" becomes extremely hilarious in that context.
* MagnificentBastard: Archduke Gorgon
* MemeticMutation: Seeing BeamMeUpScotty.
** Age of Fatso for Boss, and Boss saved the world.
** The legendary HK subtitles are a goldmine of these. Outside of the aforementioned "we are entering the age of Fatso", gems include "don't be a cockhorse", "I AM MAKING THINKING NOISES HERE", and referring to Dr Hell's scepter as the Crabstick.
* NightmareRetardant: Count Brocken's appearance -a man whose head and body are split apart, and the former constantly hovers around the later, talking, laughing and screaming- was meant be frightening (in the manga he got Kouji reaaaly scared when he showed up for first time; and in the anime [[TheDragon Baron Ashura]] initially thought it a bodyless ghost). Buuuut in the manga Boss managed grabbing his head when he got distracted, and Kouji and his friends played fetch and Brocken Ball (think of it like soccer, but replacing the ball with Brocken's head. And the only rule is everyone win. Except the ball). It was a tad ''hard'' taking him seriously after that. That scene did not happen in the anime, but on the other hand you had Brocken's head and body arguing with themselves -and the body punching the head-, or Ashura grabbing his head and instead of bring it back with the body, slapping him around...
* OT3: There are not many fans who do this, but some of them consider Kouji/Sayaka/Maria is a solution to the most important LoveTriangle in the trilogy (nobody seems considering Kouji/Sayaka/Boss or Tetsuya/Jun/Boss, nevertheless. [[ButtMonkey Poor Boss]]).
** It is lampshaded in this Super Robot Wars {{Yonkoma}} comic: [[http://www.dra-mata.com/manga/4koma/old/tsurugi07.jpg]]
* OlderThanTheyThink: ''Anime/MazingerZ'' often faltered in international releases due to people accusing it of ripping off shows it inspired, such as ''Anime/{{Voltron}}''[=/=]''Anime/GoLion'' and it's own spinoff/sequel ''Anime/UFORoboGrendizer''.
* RoboShip: Minerva-X sees herself and Mazinger-Z like partners.
* RootingForTheEmpire: Dr. Hell is a LargeHam CompleteMonster wanted to TakeOverTheWorld to force the whole humankind to [[KneelBeforeZod bow down to him]], but some fans know about his Backstory tend to see him like TheWoobie (or a WoobieDestroyerOfWorlds) and actually feel sympathetic towards him, thinking it was unfair he worked so hard, scheming complex plans and strategies and crafting incredible scientific breakthroughs only to be defeated, crushed and humiliated over and over and over by a loud-mouthed, Jerkass IdiotHero teenager with a cool HumongousMecha.
* SequelDisplacement: ''Grendizer'' was aired in France before ''Mazinger-Z'', becoming fenomenally popular. When ''Mazinger-Z'' was aired, it was accused of ripping-off one of its sequels.
* ValuesDissonance: The reason why Kouji's [[StayInTheKitchen blatant sexism towards Sayaka]] (and the main reason why she was so {{Tsundere}} for him) had to be toned down as the Mazinsaga continued. It'd be [[DudeNotFunny very NOT funny]] to have him say "girls must not fight and you are stupid for thinking otherwise" in Anime/{{Mazinkaiser}}, after all.
** In fact, that characterization was more in line with his personality in the original manga.
* WhatDoYouMeanItsForKids: Right like many GoNagai works, Mazinger Z was aimed to children and young teens in Japan, but it was judged to be too violent to be seen by children in other countries like Philippines.
* TheWoobie: When you get down to it, Yuri is an emotionally-damaged pre-teen girl who simply doesn't know how to treat others and refuses therapy due to being terrified of being abandoned again.
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