* ArcFatigue: The match between Ippo and Woli is ''30 chapters long'', not counting Woli's introduction, and a good half of it is [[spoiler:Ippo getting one-sidedly demolished by his opponent]]. Now try to read it one chapter a week (the publication rhythm in the Shonen Magazine). And suffer.
* AssPull: There's a few fights that end like this, but the absolute worst offender is Miyata during his fight against Randy Boy Jr. [[spoiler: Miyata comes up with not only a brand new counter on the spot, but it was after his ribs were broken, his stamina entirely spent, and spent a few rounds of getting pounded on. It's a unique counter he came up with on his own, and surpasses what his Father could do in his prime.]]
** [[spoiler: AssPull comes from Miyata's victory over ridiculous circumstances. The perfect counter had been a part of his storyline for ages, and really didn't come from nowhere.]]
** In the Takamura vs. Eagle fight, Takamura is apparently able to close a bleeding eye cut with sheer will. A wound which bleeding Kamogawa couldn't stop. A wound that would've stopped the match right then and there. [[spoiler: He then goes on to win the match while being completely blind.]]
** Particularly bad in the fight with Woli. [[spoiler: Somehow, all those tap goals Ippo was shooting for(literally drawn as him tapping Woli with a little puff of air) somehow all turn into a Tekken Punch that went COMPLETELY UNNOTICED and Woli is drawn as being magically held down by an Ippo spirit. Of course, this is combined with Ippo's usual invincibility to knockdowns, even after taking 50+ head punches that he himself called 'extremely sharp' - on top of this, his right eye is also COMPLETELY swollen shut and affects his vision... oh wait, no it doesn't, he still sees perfectly fine and has no issues at all. He then goes on to win, because we [[BoringInvincibleHero can't have Ippo losing]], can we? Even his finally punch is an AssPull, because he swings his arm to parry Woli's hit, then the artist draws Ippo rearing back with his left... and then he somehow throws a ''right cross counter'' that Woli cannot dodge instead. Literally one of the worst MartyStu examples for Ippo in the entire series.]]
* FoeYay: Ippo and Miyata. Ippo looks up to Miyata and knows virtually all his fight records and details. Poor Kumi has never inspired such devotion. Lampshaded by Ippo's gymmates, who often joke that Ippo is "gay for Miyata."
** The fact that Ippo never retorts anything when other characters talk about his "lover", his "boyfriend" or how he "fell for him" doesn't help either
** Some {{Yaoi Fangirl}}s also consider this applicable to Ippo and Volg, who become good friends outside the ring. When [[spoiler:Volg had to go back to Russia after losing two fights in a row, Ippo rushes to the airport to see him before he leaves. Volg gives his boxing gloves to Ippo, while Ippo ''[[ManlyTears cries]]'' as Volg is walking away. Then, later on, they live together for a few days, while Ippo helps set him up for his comeback in America, and they act almost like life long friends with each other. It's so bad for Volg he knows he has to leave soon or he'll never want to leave.]]
* GameBreaker: Heartbreak Shot. Here you have a punch that basically ''stops time'' for the opponent. It's no wonder Date was undefeated during his reign as champion.
* IronWoobie: Volg. His backstory is just sad, and he struggles with his boxing career. In the latest chapters, [[spoiler:he was only given his title shot on short notice, but he took it because he feels it's the only chance he has at making it big]]. Currently, it doesn't look hopeful, but hopefully he'll pull through in the end.
** [[spoiler: Sure enough, after probably one of the most uphill battles in the series, where it takes multiple rounds for Volg to land just ''one'' punch with any serious meat to it, he narrowly and decisively comes out victorious over Mike Elliot, just as everyone else had given up on him winning.]]
*** ...Except in Chapter 1004, [[spoiler: the victory might be short-lived thanks to a corrupt ref.]]
*** Despite this interference, [[spoiler: Volg manages to fight his way through to victory.]] That is what it means to be made of iron!
* JerkassWoobie: Sawamura. Kawabe certainly sees him as this.
* MagnificentBastard: Miguel Zail is a light version of this. He shows great analytical ability as well as [[GenreSavvy genre savvyness]] during matches. He's not infallible or omniscient, but quick to catch up on the quirks of his boxers opponents. Kamogawa even calls him "sly dog" because of it.
* MartyStu: Takamura. His goal is to become the world champion across ''six different weight classes'', and has so far breezed through two titles, while defending them with ease. This means that he is able to easily defeat world class opponents while being disadvantaged in that he has to keep his weight '''five weight classes lower than where he would be at his strongest'''. He managed to defeat the Philippine champion despite blotching his weight control so badly that he looked like a zombie. It's ironic that Morikawa spends so much effort portraying Ippo's steady climb in the boxing world and showing the effort it takes to compete at a world class level, while Takamura walks his way through two world championship titles. [[CharlesAtlasSuperpower He even]] [[RememberWhenYouBlewUpASun defeated a bear]]. WordOfGod outright stated that Takamura is the strongest boxer in the series. Keep in mind that this is even compared to the 68-0-0 undefeated "super champion" '''[[LivingLegend Ricardo Martinez]]'''.
* TheProblemWithLicensedGames: Two video games were released for PlayStation2 in 2003 and 2005, the second being for the 15th anniversary of the series. Saying they were mediocre is speaking highly of them. The character designs are all but unrecognisable. The NintendoWii adaptation that came out in 2008 does little better.
* RootingForTheEmpire: Usually inverted when Japan cheers for Takamura as [[HeroWithBadPublicity Takamura's]] portrayed as the villain in fights. However, it's played straight in his fight against Peter Rabbitson. After 10 long rounds of Takamura swinging and missing and Peter Rabbitson dodging and avoiding without even ''trying'' to attack, the crowd gets fed up and starts to cheer for Rabbitson instead of Takamura, despite the fact that Takamura's loss means there will be no longer be an international champion from Japan. [[spoiler: Of course, in the end Rabbitson ends up losing by an AssPull by Takamura.]]
* SignatureScene - [[spoiler: The scene where Ippo defeats Sendou with the Dempsey Roll has become so iconic that any work that has a Shout Out to Ippo will include an attack just like his Dempsey Roll. Street Fighter IV's Dudley uses a Dempsey Roll shot for shot like Ippo's, as well as Tekken's Steve Fox. Both based entirely on that scene.]]
* {{Squick}} - ''Everyone's'' reaction to Takamura groping Aoki's girlfriend Tomiko while she and Aoki were making out on the beach. Takamura ''does'' apologize, but his apology is, [[DiggingYourselfDeeper well...]]
* UnfortunateImplications: Subverted. The American Bryan Hawke was an insane racist that took joy in killings. Think about what this is probably saying about Americans for a second... And then it's subverted when you compare him with the ''other'' two Americans who appeared: one (David Eagle) was TheAce, the other was (Jason Ozma) a GentleGiant. Morikawa doesn't think ''that'' lowly of the {{Eagleland}}, people.
** Vorg's fight against Mike Elliot introduces a few more Americans for both sides of the cake. Mike Elliot is an all around nice guy who enjoys intellectual boxing matches and [[TheChessmaster treats boxing somewhat like Chess]]. He respects Vorg and wanted to fight Vorg in a fair fight. On the other extreme is his coach, a ManipulativeBastard who is not afraid of cheating if it will help his boxer win. He purposefully dodged a match against Vorg because he deemed it to be not worth the risk, and only allowed his boxer to fight Vorg when Vorg had ''one week'' to prepare for the match, as he was coming in as a stand-in when Mike's to-be opponent was injured. Even further, [[spoiler:Mike's coach paid off the referee ''just to be sure''. At that, the referee can be considered another American character, and his willingness to ''blatantly cheat'' makes it pretty clear which side of the coin he's on]]. The crowd also deserves a mention, too, as they spent most of the match screaming things at Vorg such as, "Go back to Russia you Pinko/Commie/Russkie/etc." and "Howl for us, Russian bitch" and don't forget "Don't mess with America!" and so on.
* WhatDoYouMeanItsNotSymbolic: [[spoiler:Mashiba]] growing a ''horn-like bump''? [[IncrediblyLamePun Hell yes!]] Malcolm Gedo's face also looks a lot like a skull when he is smiling in the ring