YMMV / One-Punch Man

  • Accidental Innuendo: Chapter 57 of the webcomic:
    Genos: What do you want with Sensei's meat?
    Fubuki: Demon Cyborg, Genos... are you truly satisfied under that man?
  • Adaptation Displacement: Most people would be more familiar with the anime than the manga, and there are certainly less people familiar with the webcomic than the former. Doesn't help that the art from the webcomic is crudely drawn, turning off people from reading the original one.
  • Angst? What Angst?: Saitama is pretty unfazed by the unwarranted hate mail he gets.
  • Awesomeness Withdrawal: The anime has gained a massive following thanks to affectionate and off-the-wall parodying of shounen tropes, wonderful animation, and crazy cast. This is why the anime's mere 12 episode run (with no confirmed second season as of yet) has left many starved for more.
  • Base Breaker: Pri-Pri-Prisoner. Many fans got turned off by him, due to being a hero who cannot help himself from having his way with men. Some think he redeemed himself by being heroic but others, especially some of the LGBT fanbase, think he should be cut off from the story.
  • Broken Base: The fandom is pretty split between preferring ONE's original work and Murata's redrawn version, to say the least.
  • Cliché Storm: Well, it was created as a parody of shounen and superhero tropes in general. It is part of the charm.
  • Counterpart Comparison: King draws some comparisons to Mr. Satan from Dragon Ball Z, being a Muggle who's mistakenly believed to have taken down powerful alien threats. Both men are also quite skilled, but not in the way the public thinks they are.
  • Crowning Music of Awesome: Lots with the 2015 Anime by Studio Madhouse.
  • Draco in Leather Pants: Speed-o'-Sound Sonic certainly counts. Although Sonic is classified as a villain in-series, has made it his life's goal to kill Saitama, and has endanger innocent lives to goad Saitama into a fight, many fans often downplay his villainous actions. Although he does have genuine Pet the Dog moments, they only occurred in an anime-only OVA.
  • Ensemble Darkhorse: Licenceless Rider has gained a lot of fans, especially after standing up to the Sea King.
    • Blizzard, second only to Saitama himself by a narrow margin in the 2015 character poll, outranking even Sonic, Licenceless Rider, and Genos. Keep in mind, Blizzard is a relatively recent addition to the band, especially in the Murata version where she's only been around for a handful of chapters. Her sympathetic motives and Action Girl status no doubt helped, as well as being a drop-dead gorgeous but tasteful Ms. Fanservice. As such, she's also had a number of special chapters centered around her.
      • It's even brought up in the post-poll chapter, the Blizzard Group mentioning how she's had little screen time. She had this to say:
      Blizzard: "But not placing first doesn't feel right after all, which means I have to become the main protagonist."
    • Tatsumaki, for anime-only watchers. While manga readers know that she's a Little Miss Badass, her attractive design in the anime, and the fact that she's the first female hero introduced on-screen, garnered her an immediate following. For double the irony, unlike her sister Fubuki (who is actually shown to become part of Saitama's circle of acquaintances by regularly visiting his apartment, much like King), Tatsumaki only really gets to interact with Saitama in the webcomic after the Monster Association arc.
    • Mosquito Girl managed to place 9th in the character poll, despite only appearing for two chapters. Much like Blizzard, a lot of popularity is owed to her attractive design (for a woman that's part mosquito) and fanservice factor.
  • Ear Worm: ONE-PUUUUUUNCH!!!
  • Epileptic Trees:
    • How Saitama actually achieved his strength. Some fans didn't want to believe his explanation and theories have been popping up like mushrooms.
    • Who Blast actually is. Not diminished at all when it was eventually revealed that Tatsumaki actually knew Blast from her childhood, as his similarities to Saitama have generated even more questions. Also not helped by the fact, depending on how one interprets Tatsumaki's monologue, Blast is not really unreachable, but actually missing.
    • With Word of God saying that Boros is above dragon, people have been speculating who will be the God-Tier monster that will inevitably face Saitama in the future.
  • Evil Is Sexy:
    • Mosquito Girl: Despite being part mosquito, there is no denying that she is certainly attractive, even to a point that her good looks won over enough fans to be place 9th in the character poll.
    • Speed-o'-Sound Sonic: A handsome Bishōnen wearing a very form-fitting ninja suit that shows off his slender, yet muscular, figure. Even though he occasionally plays the role of Anti-Hero, he still counts.
    • Slingshot S (or "Do-S" depending of translation): Another Cute Monster Girl much like Mosquito Girl, but has a more human appearance. Her super revealing BDSM outfit certainly shows off her well toned, voluptuous figure.
    • Bizarrely enough, there is a small section of female fans that finds Lord Boros attractive.
  • Fandom Rivalry: With Dragon Ball. There have been wars over whether Saitama is stronger than Goku or vice versa. Ironically, One Punch Man is an affectionate parody of shounen tropes with characters being expies of Dragon Ball characters(e.g.Boros). Still, that doesn't stop fans from comparing who is stronger of the two.
  • Foe Yay: Sonic's obsession with defeating Saitama shows signs of this. The anime furthered this with Sonic jumping towards Saitama for an attack but Saitama's fist ended up touching his genitals, although he apologized that he didn't mean to do that.
    • In Chapter 43, Sonic seeks out Saitama to fight him again in order to show his newfound strength. Predictably, Genos doesn't take too well to that, and the confrontation scene reeks of an ex meeting the new Clingy Jealous Girl girlfriend.
  • Friendly Fandoms:
    • There's been quite a few people that have noticed how much the series has in common with Empowered, what with all the superhero parody, kooky powers and supposed "loser" main protagonist. Not to mention that when it stops being funny, it REALLY stops being funny.
    • Fanarts comparing Saitama and Gudetama are also popular due to their similarities, from being lazy, looking like eggs (one is a literal egg while the other is usually drawn with an egg-like head.), having the same color scheme, and the fact that both their names end in -tama (from "tamago" meaning "egg" in japanese).
    • With FallOut4, wierdly enough, thanks to a mod that can customize the player character to look like Saitama and can even one punch all enemies with max stats. Basically, a god-mode mod for players to have fun with.
  • Genius Bonus: The Tree of Evolution shown behind Dr. Genus in episode 3 is the Ernst Haeckel's Tree of Life.
  • Growing the Beard: The Boros arc and the succeeding chapters, where the focus shifted from Saitama to other characters, as well as being the point in the series where it became darker and edgier.
  • Hilarious in Hindsight:
  • Ho Yay: Saitama and Genos. Genos is very interested in learning how Saitama became strong as he is, tags along with Saitama often despite how many times Saitama says he can handle things alone, and later Genos decides to move in with Saitama....
    • Someone compiled a whole image dedicated towards Genos serving under Saitama, which includes helping him by paying his rent, doing chores, cooking, being upset whenever someone disrespects his master, carrying his groceries, providing all the information Saitama would ever need on anything, going along with his silly shenanigans, buying an entire brand of Saitama Strips, writing every single habit and word his master speaks in his notebook, buying him drinks, and much more. To say that Genos is obsessed with Saitama is an understatement.
    • The anime somewhat adds in some additional scenes of interactions between them. One particular example being the climax of episode 7 where Genos sees negative comments accusing Saitama of causing the destruction of Z City online and rushes to the scene where he is being publicly humiliated by Tank Top Tiger and Black Hole. The episode ends with Genos telling Saitama that he will always be his follower no matter what people say about him, Saitama replies that he doesn't need to butter up things to make him feel better, and then turns back with a small smile of his face.
  • Holy Shit Quotient: The series as a whole is full of this, from Saitama punching Vaccine Man in one hit, to punching a meteor, fighting an alien leader who can destroy worlds, an enemy who can defeat nearly all S-class heroes, and finally fighting Tatsumaki herself.
  • Hype Backlash: Like every Anime season, there's one show that gets more hype and promotion than others, and OPM was no exception, especially when it was revealed Madhouse were animating it. So of course, lots of potential watchers are turned off by the more overzealous fans claiming it to be "Anime of the Year" and actively refuse to watch the show as a result.
  • I Am Not Shazam: Despite what people may believe, Saitama is not actually called One Punch Man.
  • Launcher of a Thousand Ships: Saitama. If one looks at fanworks, he's shipped with nearly everyone, two of the more popular pairings being with Genos (due to Ho Yay) and Fubuki (due to interpreting their relationship as Belligerent Sexual Tension). Not bad for a bald guy.
  • Love to Hate: Several mysterious villains qualify, but the ones at the top are Boros and Garou. Boros for being the first enemy to survive Saitama's punch and for giving what fans consider one of the best fights in the series. And Garou for being a crazy awesome villain that defeated the S-class heroes and would have won if it wasn't for Saitama.
  • Memetic Badass: Saitama, particularly on VS forums where 'one punch' is the answer to many debates involving him. Hilariously, it's not a status he has in-universe.
    • King. After all, he's the strongest man in the world. Or not.
    • Watchdogman. A lethal joke character that wears a dogsuit that is guarding one city declared a hotspot of monster activities and shown ripping a monster head nonchalantly in one panel.
    • After his absolutely insane battle with Saitama, Lord Boros easily reached this status. Exemplified by the fact that he withstood three of Saitama's attacks, and had enough life left to have a final chat with his opponent.
    • Garou, after curb-stomping nearly every S-Class hero.
  • One-Scene Wonder: This is bound to happen to every monster of the week thanks to being one punched by Saitama.
  • Periphery Demographic: The show got wider audiences with the announcement of the anime, but the fandom did not explode until it was actually being aired on tv. It attracted even casual and non-anime viewers thanks to its newfound popularity and humor.
  • Rooting for the Empire: A few fans having admitted that they couldn't help rooting for villains during a couple of Saitama's "battles", if only for desire to see someone that can be a Worthy Opponent for Saitama. Examples include Sonic, Boros, and Garou.
  • The Scrappy:
  • Signature Scene: Saitama's encounter with Boros, particularly when the latter loses his armor.
  • Tear Jerker: The ending credits song if you're able to understand it. It's sung from the viewpoint of someone waiting for their lover to come home, which is pretty needlessly romantic for the kind of anime/manga this is... until you realize that Saitama doesn't really have anyone to happily welcome him home. It really paints another layer on him when you think about it.
  • They Changed It, Now It Sucks: Many were disappointed when the anime did not show the flip-book like scenes from the digital manga the series is famous for, instead using the tankobon version of the scenes.
  • Unpopular Popular Character: In-universe, Saitama is hated by nearly all citizens, save for a chosen few, for thinking he cheated on ranks and took credit from others' work. It's not helping that he is encouraging this mindset to let the others look good. Yet this is exactly the reason why fans love him outside the show, to the point where he's at the top of the character polls.
  • Viewer Gender Confusion:
    • Sonic. None of the characters have difficulty telling that he's a guy, which is likely due to his voice.
    • Lightspeed Flash. Same reason as Sonic. The fandom has joked that the two are related 'cause of their similarities.
  • Vanilla Protagonist: Invoked with Saitama. Saitama is a plain generic guy, his ungodly strength aside, he had no other defining features in contrast to the more colorful side characters like Genos. As we find out, the webcomic explained that he truly is an unremarkable person that was able to break his limiter through sheer determination in exchange of becoming bald and being alienated from humanity.
  • What an Idiot: Who in the Hero Assocation thought it would be a good idea to release a Hero Catalogue to the public that not only reveals the locations of where the heroes are but also where they are usually seen? And why would they have entries about their "secret" moves, did it ever occur to them that villains, like Garou, might also look through the catalogue?
  • The Woobie: Saitama himself. He doesn't really act like one, but it's clear that his story-breaking powers have taken their toll. It's first evidenced in earlier chapters when he reflects on how every fight is boring and how even with his deeds, no one recognizes him. Later on, during his fight with Boros, Boros has a Not So Different moment with Saitama, claiming how he himself was the strongest person on his own planet, to the point he searched the universe for a worthy opponent because he wasn't able to take any pleasure in fighting any more. His final words to Saitama hit home, when he acknowledges the pain that comes with it and how they couldn't have a proper fight with our hero holding back. Saitama simply walks away without any words and a sad look.
    • Blizzard, a woman whose innate talents made her believe she was destined for great things. But her sister is Tornado, who is the second strongest hero on the planet and crushed Blizzard's self-esteem, making her believe she could never be anything more than second best. Furthermore, she was picked on as a kid for having her powers in the first place and her sister protecting her only alienated her further, leading Blizzard to resent her sister.
    • In terms of Jerkass Woobie, Tornado, who was taken from her family at a young age and used as a guinea pig for years because of her psychic powers. She was even isolated from the outside and denied any contact with her parents or sister. Eventually she stopped using her powers out of spite, but it only led to her being thrown in a cell until she started using them again. And she did...when an experimental creature went on a rampage and Tornado was forced to kill it on her own. It led to Tornado's current worldview, being bitter at the world and believing that connection to others and coexistence are pointless. It also led to her being overprotective of Blizzard which of course has led to their strained relationship, Tornado being a meddlesome, stifling control freak in Blizzard's life who thinks she knows what's best for Blizzard. All in all, Tornado is a giant bag of issues due to severely traumatic experiences as a child which could have been avoided if someone had shown her basic decency.

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