In an action series based around an endless series of one-on-one fights, defeating a Worthy Opponent or The Rival will sometimes convert them to the hero's side, if not always to his cause. Furthermore, no matter how much trouble the Worthy Opponent has caused for the heroes or other people as soon as he shows remorse or goes out of his way to help others he will be welcomed into the hero's circle of True Companionswith open arms.
It helps if the story is idealistic enough for the hero to forgive the villain after s/he is safely defeated. Correspondingly, the villain in this kind of story is so surprised and moved that the hero would be big-hearted enough to do that, that they have a change of heart.
From the writers' standpoint, this trope is a way to keep characters around longer. If it's a show about fighting, and if The Protagonist is always getting stronger, what's the use of a defeated enemy? If said enemy is well developed, has a sizeable fanbase and/or a sympathetic motive or backstory; then killing him might risk pissingoff the fans. We want to see him fight some more, but he can't fight the hero again because that would be repetitive and we all know he would lose. So instead, he becomes an ally and gets to assist the hero. Thus, this is a standard way for most Sixth Rangers to be added into the Five-Man Band.
In video games, this may simply be an instance where the designers wanted to include more Boss Battles; this is more obvious in several cases where a character is already an ideological ally but wants to "duel" or "practice" against you anyway, or needs to "test your strength" before he'll join up. (Summons love to do this, as do Mons and even warrior tribes.) These fights are, then, essentially filler. Of course, more Boss Battles are usually what the player wants so there are rarely complaints.
Compare Kill Me Now or Forever Stay Your Hand for when the hero refuses to kill his enemy which may lead into this trope depending on the story. Let's You and Him Fight for where two characters are already on the same side but don't know it and fight because one or both of them think the other is an enemy. Defeat Means Respect where a defeated enemy respects the victor instead of becoming friends and Fire-Forged Friends, where enemies forced to fight on the same side become friends.
See also Love at First Punch and Best Her to Bed Her for romantic variations, Defeat Means Playable, I Fight for the Strongest Side.
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Anime and Manga
Mereum of Hunter × Hunter was one of the most powerful beings in existance, being able to take the strongest attacks from the strongest man on earth without taking even the slightest of damage. He was also so smart he could master any game and defeat world champions in under 10 games with them, swiftly murdering said champion after he completely defeats them.... Then he meets Komugi, a player of a fictional board game called Gungi who he was completely unable to beat, playing dozens of games with her and never once seeing her use her full skills. She first becomes the only person able to annoy him without being swiftly killed, then someonenote and only person he cares about, to him outright falling in love with her.
This trope is how Kinnikuman fills out almost its entire recurring cast.
In Fairy Tail both Gajeel and Juvia join the guild after being defeated. While Juvia falls in love with Grey, Gajeel is approached by the master himself and persuaded to join Fairy Tail.
Played with regarding Laxus. Despite being part of the titular guild, Laxus comes off as far more antagonistic than many previous villains, neglecting to assist the protagonists in key conflicts as well as mocking their weakness. This comes to a head in the Fighting Festival Arc where he endangers the entire guild in his takeover attempt. Natsu and Gajeel manage to defeat him, and he becomes much nicer as a result. Yet inverted in that he gets kicked out of the guild (temporarily) after the arc.
Inverted when Maka fights Crona, as Maka is able to befriend Crona after matching his/her wavelength, ending the fight without either being beaten. So in this case, it was "defeat" by friendship. And boy is it a heartwarmer. Even the ending sequence changes to reflect it.
Was perhaps the expected outcome of Black Star's encounters with Mifune, and indeed turned out that way in the anime. In the manga, however defeat means death. In a large, obstinate amount of Honor Before Reason, Black Star ends up killing Mifune because neither could conceive of an alternative to fighting to the death, even though Mifune was fighting to protect Angela and it turned out the DWMA weren't going to do anything to her.
Death the Kid, Liz and Patty's backstory is that Liz and Patty tried to mug him. All we see is flashbacks, but this was most likely the outcome. According to ch 78 this is not the entire story - Kid, being a naive rich guy with symmetry on the brain, came to find the pair known as the 'Demons of Brooklyn' to have them as his Weapons. They agree originally because they want his money, and only later come to realize they genuinely like being with the boy. The Defeat's there but the Friendship took time.
Black Star tries a new job as Warrior Therapist when he faces Crona. It doesn't work, for if anything Crona's mental state is worse, and no amount of Kung Fu Strength was enough to snap them out of it.
Tower of God: Koon and Baam trick Rak, who wants to kill them, into joining their team, and they become True Companions. Baam cuts up Hwa Ryun's face and takes out an eye and they travel together for five or six years. Ja Wangnan tricks Viole into joining his team and they become friends.
It is wryly noted that this is how Nanoha of Lyrical Nanoha seems to make all of her friends, both Muggles and other mages. So much so that fans use the word "befriend" as a synonym for "beat the crap out of". Before anyone is deemed worthy of her affection, (s)he first has to miraculously survive one of her massively aggressive onslaughts, which Fate experiences first-hand.
The current title of most befriended goes to Vivio, who took the title from Fate when she received five Starlight Breakersat the same time and managed to remain conscious and stand on her own afterwards. A considerable feat since Fate couldn't even claim that when Nanoha struck her with one. Nanoha officially adopts Vivio as her daughter afterwards.
This trope explains why Nanoha isn't as close to Chrono as to the rest of her friends. She never blew him up! Het Option Yuuno is around, but has less and less presence each season. In Triangle Heart 3: Sweet Songs Forever, Chrono does in fact get blown up by Nanoha, and becomes romantically involved with her afterwards.
The first time Nanoha met Fate, the latter "befriended" her nearly into the hospital. Is it any wonder she fell in Love At FirstPunch?
Lampshaded in the third Megamisound stage, where Hayate, in response to Erio and Caro becoming friends with Lutecia (whom they had defeated in the final battle), and the reformed Numbers cyborgs, notes that children have an amazing capacity for forgiveness. Similarly, in Magical Girl Lyrical Nanoha ViVid, Vivio acknowledges that while she is friends with Lutecia and the Numbers now, they were involved in her kidnapping from Section 6 four years ago.
Referenced in episode 12 of Kämpfer when Seppuku Bunny (voiced by Nanoha's voice actress) threatens to befriend several other characters just before they're about to fight.
Nanoha has finally explained the whole "befriending" process herself in the movie manga when she thinks back to how she became friends with Arisa only after they fought.
Magical Record Lyrical Nanoha Force: Defied by the Hückebein family. No matter how bruised they are they refuse to sit down and talk with Nanoha or anyone else. Instead they are aggressive to the point of being irreconcilable. Even in defeat, they would rather run away than demonstrate any willingness to a truce.
Many of the Pokémon the characters capture only agree to join them after they prove themselves by beating and catching the Pokémon in a battle. Main character Ash Ketchum had to earn the obedience of Pokémon like Bulbasaur, Snorunt, Treecko, and many more this way, even after he'd already befriended them.
And then there are the Pokémon who are just plain hostile and only become friendly after the characters have beaten and captured them. Ash only befriended Pidgeotto, Krabby, Muk, Corphish, and several other Pokémon after he'd beaten them up and caught them in a Poké Ball.
Many of the human relationships are this way too. At first, Ash couldn't stand Gary or Paul, but once he'd fought them in the Pokémon League he formed a new friendship, or at least mutual respect, with the both of them. More generally, the To Be a Master nature of the series means that many non-evil characters are after the same goals as The Protagonist, and while they compete against one another there's no real hatred between the majority of trainers.
Subverted in some cases. For instance, after being tormented the entire episode by a wild Rotom in an abandoned hotel, Ash and Dawn eventually use their combined powers to defeat it, and then are concerned for its safety when it seems down for the count. The Rotom wakes up and looks ashamed, and Ash conjectures that Rotom was just lonely and wanted someone to play with. Rotom nods in agreement... then shocks all of them before darting away, cackling madly.
Naturally Dragon Ball, as almost every member in the Z team at one point had the sole goal in life to defeat and/or kill Goku (or "send him to another dimension"), the only exceptions being Gohan, Goten (which are his sons) and Trunks. Overall, Piccolo and Vegeta were the most reluctant, but both became allies in the end, even though they were evil at first.
The original Dragon Ball series could be defined by this trope, and some of it even carries on to the very end of Dragon Ball Z. The decent half of Majin Buu ends up living with the heroes, and Goku asks for the pure evil part to be reincarnated as a decent kid just so they can have another match.
Avo and Cado from the JUMP Super Anime Tour special have got to be fastest example in the history of fiction.
Inverted with Tenshinhan. He beats both Kamesennin and Goku and does the typical Heel-Face Turn after his victory, mostly after Kamesennin gives him a good talking-to about why idolizing an assassin sucks and he realizes that he doesn't want to kill Goku, he just wants to fight him square.
Spun around in Battle of Gods. Beerus utterly owns Goku at every step, and decides to befriend him for putting up a decent fight.
Hajime No Ippo: Ippo often becomes friendly with the opponent even before fighting them (Sendo, Date, Volg) and resulting fight just seems to seal the deal, so to speak. Itagaki is another example.
Ryuji Otogi (Duke Devlin in the anime's English dub) begins his appearance in the Yu-Gi-Oh! manga as a gamer raised to defeat Yugi Mutou in order to take revenge for his father's loss against Yugi's grandfather (Mr. Otogi, who wanted to take possession of the Millennium Puzzle, challenged Sugoroku Mutou to the Devil's Board Game, a demonic Shadow Game, which made his father's face monstrous upon losing) as well as to take possession of the Millennium Puzzle in order to become the King of Games. Despite his upbringing, Ryuji shows a side of honor and kindness during his game against Yugi and his opinion of Yugi starts to slowly change during the battle, recognizing his skill. Despite Ryuji trying to reason with his father that the revenge games were going too far, Yugi was almost killed as Ryuji's store burned afterwards. Ryuuji performs a Heel-Face Turn when he realizes that he doesn't hate the Mutou family as much as his father does during the prior game, and becomes a Sixth Ranger to Yugi's Five-Man Band of friends.
Ryuji's story is different in the Yu-Gi-Oh! anime. Nursing a tremendous grudge against Yugi Muto for destroying his chance at success (by ruining Pegasus's reputation, and a potential publishing deal). After a single defeat at the game he designed, however, Ryuji does a 180 and becomes part of Yugi's inner circle of friends. Ever since, fans of the English series have called such drastic turnarounds "pulling a Devlin".
It's different in the manga version where Ryuji fought against Yugi to take revenge for his father's loss against Yugi's grandfather (which made his father's face monstrous) as well as to take possession of the Millennium Puzzle. Yugi was almost killed as Ryuji's store burned afterwards.
MANY other important characters in the show follow this trope ranging from Mai and Mokuba to villains like Pegasus and Marik. Seto Kaiba is unusual in that although he is repeatedly beaten by Yugi and has had the invitation of friendship extended to him by the group more than once, he only admits to respecting Yugi but never would call him his friend.
Yu-Gi-Oh! GX exploits this with the Society of Light, who "recruits" their members by beating them at Duel Monsters. Interestingly, a good deal of the main characters that fall into the Society's sway were trying to use this trope to snap their friends out. Unfortunately, when it came to characters that were part of the main cast, the only one who ever succeeded was Jaden.
Every season seems to have adversaries who convert the important characters by beating them and then the Good Guys Turned Bad are turned good again when a main character beats them in a duel or the Big Bads die or become good after losing a game. This is partially explained by the fact that according to the show, the universe was created by card games.
Yu-Gi-Oh! 5Ds naturally. The earliest example – and, remarkably, one that doesn't involve supernatural things – is Bolt Tanner (Jin Himuro in the original), who goes from being a delinquent to one of Yusei's best friends after one Duel (in which Yusei won without launching a single attack).
In happens in Yu-Gi-Oh! ZEXAL a lot too. Shark becomes a frequent ally of Yuma after losing to him, third-party villain Tron reforms after being defeated, and even the Big Bad of the first season, Dr. Faker, sees the error of his ways after losing a duel.
Bleach: Ichigo has befriended several people he's defeated because the fights mostly occurred as a result of misunderstandings:
Uryuu and Ganju picked a fight with him because they were angry with Soul Reapers over the deaths of loved ones. Ichigo was able to help them past their anger.
Ikkaku and Kenpachi are motivated by the desire for a good fight so a Worthy Opponent instantly earns their respect.
Renji and Byakuya did want to save Rukia but were bound by orders. Defeating Renji convinces him that Ichigo has the power to save her, but Byakuya's a tougher nut to crack due to him being bound by two conflicting vows. Ichigo's victory resolves the conflict and earns his Undying Loyalty.
Sagara Sanosuke in Rurouni Kenshin. It helped that Kenshin monologued at Sanosuke for a couple of pages, and admitted that the revolution Kenshin helped push through was superficial and still had a long way to go before true equality happened. Sano realized that they were fighting for the same cause and therefore gave up, letting himself pass out from the injuries he'd sustained in the battle.
All the characters Kenshin defeats either end up on his side, such as Aoshi, Saito, Chou, Anji, Kujiranami, and eventually even Enishi,, or die/never show up again.
Rosario + Vampire. Notice how every girl in the harem wanted to kill Tsukune and/or Moka before Moka kicks the living daylights out of them. Except for Yukari. She was just being a harmless prankstress who managed to be more annoying than dangerous.
A longstanding tradition in JoJo's Bizarre Adventure. The first real friend that Jonathan Joestar makes is Robert E. O. Speedwagon (haha), who tried to mug him. Jonathan's great-great grandson Jotaro makes friends with Kakyoin and Polnareff by freeing them from Dio's mind control, and nearly all of Jotaro's 16 year old uncle (long story) Josuke's friends were people who tries to kill him the first time they met.
Jonathan even managed to earn Dio Brando's respect and admiration after destroying the latter's body. Dio even berates one of his minions for mocking Jonathan. Too bad Dio took it to Yandere levels, to the point of killing Jonathan and claiming his body for himself.
Misaki from Kidou Tenshi Angelic Layer uses a combination of skill, cuteness and "you're not alone!" speeches to win over every other player. (Add obliviousness, if it's a battle with someone who cheats — apparently, the ability to win anyway is heightened by her honestly thinking that her opponent would never mess with the odds.)
The entire Shuffle Alliance in Mobile Fighter G Gundam is assembled in this fashion (except Sai Saici, who fought Domon to a draw rather than being beaten). Main rival Chibodee Crocket goes back and forth between violently beating the hero and having breakfast with him at least three times.
Various antagonists in Naruto — Neji and Gaara most obviously, to the point where one fan artist referred to a "We Got Some Sense Beaten Into Us By Naruto Club" (members include the above plus Inari, Konohamaru and Tsunade...) Seen here.
Averted with Ino and Sakura, who renew their friendship after fighting to a draw. The nature of their rivalry suggests that a clear victor would have been detrimental to reconciliation. Then again, technically, they both lost, since as a result of the draw, both failed that attempt at the Chunin exam.
Sasuke and Naruto are something of an inversion, since Sasuke was ready to admit that yes, they are best friends, though this wasn't necessarily a good thing since Itachi told him, even advised him, that killing his best friend would unlock a new power, a power he'd need if he wanted his revenge. When it came to it Sasuke (barely) defeated Naruto, but chose not to kill him because he still thought of him as his friend, and he didn't want to achieve power by following Itachi's ways. May or may not be played straight now that Sasuke is batshit insane, but still an inversion since every time Sasuke was about to get better and abandon his vengeful power-seeker ways, some evil villain came along and deliberately put a stop to it by giving him another reason to dive off the deep end. So, Naruto really has to deal with the people corrupting Sasuke first before defeating him.
It would take less time to list the antagonists in Beyblade that didn't do this than take the time to list those that did. Suffice it to say, by the final arc, there were 30-some good guys.
In Ranma ˝, after Ranma defeats Shampoo as a male, she becomes his fiancée by tribal law. Later Ranma defeats Ukyo and they go back to being friends (in her case, an Unlucky Childhood Friend). Before both fights the girls were out for revenge, and after the fight they more-or-less became friends (or clingy unrequited love interest) with him. Other than that though, none of Ranma's many rivals have ever become friend and always get madder at him after defeat.
In Ryoga and Mousse's cases, battling common foes and saving each other's lives have made them True Companions, however. But not friends.
A key plot point in Super Dimension Fortress Macross / Robotech for the elite female Zentraedi warrior Miriya, who ends up marrying Max. The broadcast of their wedding then gives Breetai, the enemy commander, much food for thought...
Karasu and Bui in the Dark Tournament are only working with the Toguro Brothers for the chance to get stronger and then turn around and kill them, but until then, they are good teammates. The younger Toguro is not only fully aware of this fact, he welcomes it. The elder Toguro, on the other hand, is simply unkillable and thus has no reason to care.
Rinku, Jin, Toya, Kuwabara, reluctantly both Shishiwakamaru and Suzuki, Murota, Mitarai, slightly Amanuma, and Sayaka in the pre-resurrection arc, although in the anime she was merely a Spirit-World inspector. Suzuki even went so far as to provide Kuwabara and Kurama with weapons that they would have been defeated without, although technically this was to further his own ends. Yomi became friendlier after the Demon Tournament arc, although he was by no means a friend or ally, as well as Mukuro and Raizen's old friends. Luka got out of the force-field for hire and switched to doing a radio show with Koto and Juri after nearly being incinerated by Hiei.
Happens several times in Shaman King. Ren, Ryu, Faust and Lyserg all attempt to kill Yoh and/or Manta before joining Yoh's posse, often executing bizarre Heel Face Turns.
Gene Starwind earns Suzuka's allegiance this way, though it's been theorized she was really just tired with the life of a hired assassin. This incident is especially interesting because Gene ends the fight by disrobing her.
Aisha initially pursued Gene and company because they got her busted down from military rank in the Ctarl Ctarl when he humiliated her command of a warship. She tries to pick a fight with him more than once, but she just can't get her act together (foiled by severe hunger, Gene runs away from her, no moon on the planet she's on to let her metamorph into a werecat, can't pay off her food bills, or for that matter, property damage bills, etc.). However, they eventually come to good terms after she helps them out of a few circumstantial scrapes and Gene promises to pay her back in turn.
Subverted in Hellsing. At first it seems that Iscariot, who lost almost everyone during the war, have formed a somewhat friendly relationship with the Hellsing organization afterward. It turns out that they're really just waiting until they've properly rebuilt themselves to launch their next crusade.
The girls from Magic Knight Rayearth managed to convince the summoner Ascot to stop fighting them after defeating his beasts and teaching him the value of friendship. The fact that he had killed Presea, which really upset them at the time, was conveniently forgotten.
Presea's death only occurs in the anime. In the manga, it's his idea of letting his beasts use the unconscious Hikaru and Fuu as toys that really upsets Umi, especially when he calls them stupid for trying to protect Umi.
They also managed to convince Caldina to back off through their passion and commitment to their cause — Caldina may be a mercenary, but she wasn't that much of a fan of Zagato's pointless-seeming quest to destroy Cephiro.
Rakan appears to be a subversion. His version of this trope sounds more like "Draw Means Friendship". Just take a look at his fights. He fought Nagi to a draw, Friendship, he fought Vrixas Nagasha, the ancient dragon, to a standstill and they were on good terms since then, his fight with Kage-chan never reached a conclusion so it can be considered a draw, after the fight they went drinking and became friends.
Appears to be the same deal about to happen with Luna (Shiori) ... though it might more be Best Her to Bed Her.
Seems like this is about to happen again, since as of chapter 292 Negi wants to be best friends with Fate. And it seems to be mutual, too, in a way. As of chapter 328, It finally happened, with an epic friendly beatdown, though Fate is still Tsundere about it.
Actively Invoked in Negima's sequel, UQ Holder. When assassin Kuroumaru tries to kill Touta, after winning the ensuing battle, Touta forces Kuroumaru to sign a 'best friends' contract.
In Samurai Pizza Cats Bad Bird is the arch rival of Speedy until he is fully defeated in the final ep. After Speedy gives a speech telling him it's not too late to change, Bad Bird sees the light, becomesGood Bird, and helps Speedy destroy a comet heading for Tokyo.
Flame of Recca is notorious for this, particularly during the Tournament Arc. People who were trying to kill Team Hokage just hours ago are suddenly eating snacks, playing videogames, and sharing stories with our heroes in their hotel room. And one of them creates a fan club for Fuko.
This shows up as a recurring theme in Hayate × Blade, probably because the premise of having pairs fight each other means that one half of a team can get into trouble with somebody else, getting their partner involved in the process. Other than the Momotaro-gumi, a Four Girl Ensemble that came about after the members had fought each other to the point of bloodshed (a nosebleed, that is); examples also include Mizuchi, who becomes a lot more likable after her defeat at Ayana's hands.
In Harlem Beat, almost all rival teams become this with Johnan team.
Possibly subverted in Black Lagoon: Chang and Balalaika became friends after their (intended) fight to the death turned out a draw.
In The Prince of Tennis, the Seigaku and Fudomine teams become rather acquainted after the first team wins the matches against the latter. Something similar happens with the Rokkaku and Hyoutei teams, to different degrees.
In Dragon Half, when Mink defeats the necromancer Dead Lie and the four elemental generals, they become quite friendly, treating Mink and her party to a picnic and wishing her luck on her quest.
In Cynthia the Mission, the Big Bad Cybele does this. All of her subordinates became her loyal and loving followers after she destroyed them in battle. Phantom got his lips torn off. The guy in the glasses got his eyes gouged out. Bridget got her arm torn off. And the boxer guy got his neck slit. Yes, the least crippling injury was a throat cutting. Cybele herself gave Bridget and the boxer medical attention and a prosthetic arm in Bridget's case.
Interestingly inverted One Piece, where Mr. 2 Bon Clay makes friends with the Straw Hat Pirates and then they find out they are enemies. Though Bon Clay considers them still friends, he still fights them (he's just doing his job, after all). After his boss is defeated though, he sacrifices his freedom and is imprisoned to help the pirates escape.
Also kinda subverted during the fight between Sanji and Mr. 2 Bon Clay, in which Sanji wins. Bon Clay tells him to finish him off and instead...Sanji offers his hand to apparently help him up. Bon Clay is touched (his inner thoughts say stuff about 'enemies becoming friends!' or something like that), and then Sanji promptly knocks him out and retrieves Usopp's goggles from him.
One Piece, unusually for shonen manga, tends to avoid this trope for the most part. Most villains are irredeemably evil (though their minions might be somewhat sympathetic, it's usually due to their comedic quirks) and Luffy usually decides he wants someone on his crew within seconds of meeting them, giving villains no chance to make a Heel-Face Turn anyway. The only real exception is Franky (Robin is debatable, since no one ever defeated her; she just showed up on the ship and asked to join.)
The only major exception is that a defeated villain (again, usually a minion) gets a mini title-arc where they sometimes become more humane, and sometimes even end up helping the hero later on, like with Hachi, formerly The Dragon to the series' first Big Bad.
Minor villain Duval is an exception. He decides he likes the Straw Hats and pledges loyalty to them as soon as he's defeated...though it might have something to do with Sanji giving him reconstructive facial surgery with his feet, turning him from Gonk to Bishōnen.
This happens with Bellamy in a very long roundabout way. When Bellamy was first introduced, he was another irredeemably evil villain who Luffy had no problem delivering a One-Hit Kill to. After meeting Bellamy two years later, though, Bellamy has actually learned from his mistakes, and no longer laughs at the dreams of others, including Luffy. Luffy then cheers Bellamy on as he fights, and although Bellamy doesn't hesitates to attempt to assassinate Luffy under Doflamingo's order (though is stopped by Delinger before he has the chance), Luffy later refers to Bellamy as his friend. Eventually his Berserk Button is pressed (Doflamingo treating Bellamy, his crewmate, like garbage), and Luffy goes all-out to save him from Doflamingo.
A quicker, more straightforward example can be seen between Bellamy and Bartolomeo, who defends Bellamy from Dellinger claiming that, because they struck blows, they are now friends.
All but a few members of the Shinpaku Alliance in Kenichi: The Mightiest Disciple were members of rival gang Ragnarok before being beaten by Kenichi and being either convinced or blackmailed by Niijima to join Shinpaku.
Seen more or less often in Saint Seiya, where the Bronze Saints and Saori manage to make several of their enemies realize they should join their cause after Seiya and Co. defeat them in battle.
Subverted in Dragon Drive, where Reiji's defeat of Daisuke Hagiwara only increased the tensions between them; They eventually do become friends after enduring a long Enemy Mine situation.
Many of the highlighted players from teams defeated by the Deimon Devil Bats (even some of the freakishly destructive ones) in end up as personal trainers for the players they opposed when the Devil Bats are preparing to play in the Christmas Bowl. They genuinely seem to want to be helping out (in other words, they're not there because Hiruma threatened them) and cheer their formal rivals from the stands.
Gaou takes this to the next level. If someone he faces proves themselves to be a Worthy Opponent (such as Bamba, Riku and Kurita), Gaou will become a surprisingly loyal friend to them and he will defend them in every sense of the word (including attacking ANYONE who insults them).
Local gang leader Anego in Dai Mahou Touge becomes pretty chummy with Punie after being defeated.
Inverted in Yugo the Negotiator. Yugo always get his ass handed to him, but he manages to get all cooperation he needs from them in the end, being the stubborn person he is. As a negotiator, it helps that he is also always looking for the best outcome for all sides involved.
Graham Spector of Baccano! concludes that Ladd Russo is his best friend in the whole wide world after the latter takes a high-speed monkey wrench to the side without even a flinch and subsequently owns him. Graham's insane, so that might explain it.
A strange semi-example in a bit of Star Wars Manga - yes, there is Star Wars manga (although it's non-canon, meaning it didn't happen ) - happened when Darth Vader slaughters a group of hidden Jedi, sparing the last one - a very young boy named Tao - because the kid's anger and horror is so strong that it hints at serious Dark Side potential. He takes the boy as a secret apprentice (rather creepier than Starkiller), and though Vader killed Tao's family and razed his world, Tao somehow can't really hate Vader. Even when the Emperor finds out and has Vader kill him - really, he was Only Mostly Dead, and Tao was able to save his master from something else before dying happy, since Vader took him back to his razed homeworld to be buried.... The whole thing comes off as Shotacon-ish fanfiction that stops just short of actual sex. Still, after having his people killed and being curb-stomped by the Dark Lord, Tao randomly became very loyal, and Vader for his part went a little soft.
Grenadier goes slightly overboard with this trope. In one episode we see the main characters beat a gang of bloodthirsty thieves with a known murderer as their boss, and the evil mechanic genius that helps them. Next episode, the whole ex-criminal gang is helping repair the damage they've done, and the boss (who has in the past killed the innocent family of a child over petty extortion) serves as benevolent comic relief. The evil genius is helping with defense, and is incredibly happy over being complimented for his work.
The damage they had done was to a place called "The Pleasure Palace". While the insta-redemption might be a bit "Huh?"-worthy, it's honestly not that odd for a bunch of guys who have just had some sense beaten into them to realize "Hey, helping out a lot of really hot women works out a lot better than threatening them!"
Near the end of Adachi Mitsuru's H2, Hiro receives encouraging letters from various defeated players and teams. Even Hirota, the series' jerk, writes "You're an eyesore. Lose already.".
Invoked (badly) in S-Cry-ed. One of the antagonists attempts to use his "script-writing" powers to rewrite reality where Kazuma joins HOLY. He botches it when Kazuma instead takes his defeat personally and punches the altered reality back into shape.
Averted in Shootfighter Tekken. Kiichi defeats Kiba handily after a long and grueling fight, but Kiba still thinks he's just some punk kid. After telling him what a damn fool he was for being merciful, Kiba probably continues to be a massive asshole of a teacher.
In the ecchi romance ninja manga Ninja Girls, this is how the rivals in the Love Triangle for Raizo's affections become friends... during a friendly game of kemari that turns violent. If they weren't Stripperiffic you could almost mistake this as an occurrence in a typical male oriented sports manga, as they fall down laughing, and handclasping.
From Liar Game, the only times that Nao does lie is to help out those in the game. And once she advances to the next round, she gives her winnings to them, so they could pay off their debts. Once she does, they see that her honest character isn't faked and they become friends/allies with her to help her advance. Best example would be Fukunaga and Akagi.
Also subverted spectacularly with Yokoya who walked away with a huge sum of cash and his own teammates in debt. All of his teammates were not pleased at all. In fact, Fukunaga who wasn't even on his team and had his debts all paid in full, returned to the revival game so he could "rip every last yen outta that damn bastard".
In the Dragon Quest manga, Dai earns several allies after beating them in one on one combat.
Hayato from Future GPX Cyber Formula makes friends with Kaga, Osamu, Shinjyo, Johji and others after a few or more races with them, although he made friends with Kaga and Johji before the race started.
Played straight with some villains-of-the-week (such as Bucci) in GUN×SWORD. Subverted in that this is what The Claw wants, or claims to want, with all of his enemies. In the latter case, the desire to make friends with everyone comes across as a sign of extremism at best, and insanity at worst.
Not only used multiple times, but practically trumpeted as an ideal in martial arts in Sumomomo Momomo. Momoko even has a flashback where her father tells her that such clashes, and chats over drinks afterwards, result in the best friendships (and the best-tasting drinks). It's shown via quick flashbacks that the Arranged Marriage that drives the plot came about after Momoko's and Koushi's fathers played this trope straight.
Medaka Box, being a Deconstructor Fleet of Shounen tropes, plays with this one too. Medaka actually can't befriend people without somehow defeating and "fixing" them first. As Ajimu points out, Medaka values her enemies more than her allies. In chapter 118, Medaka deliberately provokes Zenkichi further after Ajimu convinced him to fight against Medaka by beating the crap out of him and mocking him afterwards. Medaka tells Kikaijima that she hopes Zenkichi will become a Worthy Opponent that she can defeat and "befriend", and mentions that she should have set him up to be her enemy from the very beginning.
Occurs several times in the Sailor Moon anime. If an enemy's been betrayed or is repentant then Usagi will heal or accept them as allies. Usagi is perfectly willing to kill, but most of the larger enemies short of the Big Bad are Self-Disposing Villains. This trope is averted in the manga. The Guardians/Soldiers frequently kill their opponents as enemies in war.
One arc of Sakigake!! Otokojuku featured a bunch of transfer students from the closest thing to Otokojuku anywhere else in the world — the prep school for the Annapolis naval academy. Principal Edajima organized a series of "friendly" boxing matches between select new students and old students, ostensibly as a bonding exercise. In reality, the gloves used in the matches were metal and covered in spikes. The American students all lost their matches, but became the best of pals with their adversaries (and the Japanese students in general); when time came for the new arrivals to head home, unofficial class leaders Momotaro Tsurugi and Kieth Jackson both state that they cherished their time together.
There's an interesting variant in Claymore. Miria vows not kill any of her former comrades when she leads a revolt against The Organization. She fights and defeats all of them... only to get butchered horribly when they regenerate. Her resolve not to kill inspired every single enemy Claymore to defect to her side and they faked her death.
In Holyland, Iwado, Shougo, Taka and Tsuchiya after their defeat by Yuu.
Senji thought Ganta was dirt in Deadman Wonderland until he was outmaneuvered and defeated by him. Immediately afterwards he offers Ganta a smile and a fist bump.
The newest "Toriko" villain Joa weaponizes this. He sees a person's thoughts as equivalent to their taste, so his Taste Change technique allows him to brainwash them into joining his side.
Jun befriends Yuka shortly after being defeated by her and acknowledges Yuka as being stronger than herself. She spends the remainder of the series getting to know her and even takes it upon herself to help Yuka save her childhood friend, Satomi.
First inverted with Cecilia: she defeated him when his IS ran out of shield energy, then turned all dere-dere on him the next day.
Later on played straight with Laura: she reappears the next day after their match, kissing him in front of the class, then later declares him as her "wife".
Just about every major friend and acquaintance of Nanami in Kamisama Kiss became so through this trope. Even Tomoe, the deuteragonist of the series, since she forces him into a magical contract with her very much against his will.
Seiichirou Kitano of Angel Densetsu manages to "defeat" Yuji Takehisa after attempting to stop a presumed suicide attempt. The latter spends the rest of the series as Kitano's completely loyal lackey, though the man himself is totally unaware of it.
In chapter 5/episode 3 of Gekkan Shoujo Nozaki-kun, Mikoshiba mentioned he is now friends with Kashima because of this trope. Specifically, he was decidedly defeated by Kashima in everything.
In ElfQuest, after centuries of festering rivalry (and Rayek abducting Cutter's family so that he has to be lonely for a couple hundred years!), Cutter and Rayek decide to settle their differences by beating the crap out of each other. Once the fight is over they don't exactly become friends, but they're at least willing to cooperate with each other.
The Wolfriders tend to treat all internal conflicts this way, which makes sense given that their society is modeled on the wolf pack.
In the original Little Nemo newspaper comics from the early 1900s, self-centered prankster Flip torments Nemo endlessly, even getting him exiled from Slumberland and hindering his attempts to return, until Nemo insists they settle their dispute in a boxing match. Upon being soundly trounced, Flip immediately declares himself to be Nemo's loyal friend and companion, and remains so until the Reset Button years later.
In the first Rogue Squadron there is an Expy/Distaff Counterpart of Fel in Kasan Moor, a very good pilot who is part of a very good Imperial squadron. She gets captured by being shot with a Y-wing's ion cannon, and transmits not only her surrender, but her willingness to defect and provide useful intelligence. Sure enough, the next several missions involve targets she's chosen, and she's flying in an X-Wing with the Rogues, musing that now she knows what it's like to be on their side of these little raids. Why she defects is never really elaborated on, but none of the Rogue Squadron games are famous for plot.
In the Teenage Mutant Ninja Turtles comics, Casey Jones spent most of his first appearance having a knock-down-drag-out brawl with Raphael over Casey's overly violent street vigilantism. Raphael ultimately won, and Casey thereupon became one of the turtles' closest allies and Raphael's best friend. The 2003 cartoon had a similar sequence.
A Wrong Genre Savvy character in Birds of Preythat later becomes Misfit assumes this is the reason Oracle ends up attacking her when she breaks into the clocktower.
This trope is how Popeye befriends Toar, the immortal caveman. After Toar admits defeat ("You hit too hard, no fight crazy fool like you!"), Popeye offers him a friendship and Toar accepts.
In Empowered both the heroine's boyfriend and best friend are people who defeated then befriended her. And if you include the Caged Demonwolf on her coffee table is one of the enemies who SHE defeated, and befriended (however begrudgingly.)
Hogyoku Ex Machina lampshades this when Ishida asks, "Kurosaki, is there anyone you've fought that you haven't become best friends with?"
As'taris, dying to take the newly revealed Kansael from John, threatens to cut it out of his chest. Ringo telekinetically shoves him away, takes his sword, and threatens to drop him in the ocean if he tries it again. As'taris is so impressed that Ringo actually fought back that he immediately drops his main objection to the four (that they were noncombatants) and thereafter views them as peers—more or less.
The four “defeat” the Hunter (and by proxy Jeft) simply by being themselves; their obvious love for one another makes him long for an alternative to his friendless, loveless life of adventure and murder. He becomes the best friend they make in the entire book.
Legend Of Zelda Rings Of Dualty subverts it with the main characters, Link and Samba, because their battle came to a draw. Played pretty straight with the Leviathans of Material.
In Clash of the Elements Most the heroes manage to form a bond of friendship with their respective Genesis Samurai opponents, save for Geno, who was already acquainted with them long ago, and Luigi, who was knocked unconscious after his battle before he could form one with his.
In the 2008 Horton Hears a Who!, Horton is triumphant getting his neighbours to believe the microscopic Whos exist and is hailed a hero of the ages. However, he can't help but notice the Sour Kangaroo is now alone, ashamed and hated for what she did to him and almost to the Whos. Fortunately, Horton has a heart as big as his ears and he immediately goes to offer his forgiveness to the Kangaroo. The Kangaroo, realizing how lucky she is to have a friend as noble as Horton, immediately offers to help him shelter the Whos for the trip to Mount Nool.
Probably the most famous instance was Shane's barfight retribution of Calloway's earlier public humiliation. Shane wailed the tar out of his attacker and others in the bad guy Ryder's employ. Out of respect, Calloway quit Ryker and warned Shane of a bushwhacking plan using a hired killer.
In The Remake, Cheng and his group of friends who had once bullied Dre respect him after he wins the tournament. In fact, Cheng, the main bully, is the one to present the trophy to him. This was significantly aided by their disgust with the lengths their coach pushed them to in an attempt to defeat Dre.
It's a one fight thing, but when the documentary film, When We Were Kings, won its Oscar, Muhammad Ali and George Foreman went to the podium with the winners as a gesture to show they'd reconciled over the 1974 bout. (Particularly touching was Foreman's very gentle attempts to assist Ali up the steps). No such luck getting Smokin' Joe to forgive the Uncle Tom comments, though.
The Disney Channel frequently invokes this trope. There's no actual fighting, but after the protagonist wins/beats their opponent/whatever, the antagonist suddenly becomes BFFs with them.
Lancelot is seeking to serve the man who can best him in combat. Arthur loses to Lancelot, then cheats by using Excalibur's power to knock Lancelot silly. Lancelot doesn't realize what happened when he wakes up and agrees to join Arthur. Things don't turn out so great in the end...
The first knight Arthur bests in battle — Sir Uriens, who knights him — winds up being Arthur's lifelong ally, and the first to obey Arthur's order to find the Holy Grail. He ultimately dies on the quest to find it.
When the mechanicmom finally accepts the evidence that her son was murdered, she still harbors a grudge against The Machine Girl, who she previously blamed for it. Before joining her on a vengeful warpath, she's determined to engage the one-armed girl in a fight that culminates in an arm-wrestling match. After she's defeated, the mother immediately makes friends with Machine Girl.
When Matthias and Balthazar go at it in The Scorpion King we know how it's going to end. Call it a curious form of prehistoric male bonding. They engage in a spell of no holds barred combat - half wrecking the Free People's camp - before sitting down together to plan their assault on Gommorah.
Rocky and Apollo from the Rocky films. For Apollo, the only way to get back at the man who reminded him of his worthlessness is by befriending the one who took it away.
The King and the Clown: When Jaeng-sang and Gong-gil arrive in Seoul they crash the show of some local jesters and engage in a little showdown. Their double act clearly wins and that evening the Seoul clowns propose to join forces.
In Avatar, the Na'vi knows which banshee is destined to be theirs because it will try to kill them. They also have to 'tame' it through violence.
After Ip trashes Wong Leung the first time they meet, the latter up and leaves. He comes back with three friends to try to defeat Ip. It's only when this fails that Wong asks Ip to accept him as a student.
Played straight from the first movie to the second: The leader of the ne'er-do-wells from the first movie gets defeated by Ip in it, and in the second movie comes to his aid. He even credits Ip for helping to turn his life around.
In The Horror of Party Beach, shown on MST3K, at a beach party in the beginning the main hero fights with a leader of a biker gang and defeats him (with some help from some scrawny bystanders in speedos). The leader shakes his hand.
Mike: (in upperclass British accent): "You have defeated me sir! You and your noble band of choreographers!"
After Jerry beats up his bully in Three O'Clock High, the bully shows up to return some money so that Jerry can get out of a theft charge. He even gives him the very faintest of smiles before walking off.
American Ninja has this. Jackson starts a fight with Joe, when Joe effortlessly kicks his ass, Jackson becomes his buddy, willing to risk court-martial for his new friend.
In the Director's Cut of Legend The Gump is furious with Jack for allowing Lily to touch the unicorn, and then throws a massive tantrum when Jack solves his subsequent riddle - but once he's over it he forgives Jack immediately (as he promised) and joins his quest to save the unicorns (and Lily) from Darkness.
The villains of the Spy Kids movies are often defeated this way.
Swede, the violent and unruly marine from Heartbreak Ridge has been in and out of the brig on one charge or another until Recon Platoon recruit him to remove Drill Sergeant Nasty Tom Highway. Highway himself has been on a great many charges for violent disorder and when Swede offers to turn himself in after losing, Highway instead orders him to get on parade. Later, Staff Sergeant Webster is trying to get evidence against Highway at the direction of the company CO, the entire platoon stands against him, but Swede seals the deal simply by standing over Webster and staring down at him. Way down. Webster wisely leaves.
'Borsalino' starts with Roch Siffredi and François Capella beating each other up over a woman. The rest of the movie is about their friendship.
In the 2011 film Warrior: A classic example. Tommy can't set aside his resentment towards Brendan until Brendan reluctantly gives him a No-Holds-Barred Beatdown. Brendan only does it because Tommy's fighting despite a dislocated arm and needs to be subdued quickly or else risk more intense injury fighting. While choking him out, Brendan asks for forgiveness in anguish and tells Tommy he loves him (keeping in mind Tommy had just gleefully tried to punch the life out of Brendan), at which point Tommy finally taps out and they embrace as brothers.
From Hatari, Kurt only accepts Chips onto the team after Chips beats him at shooting and punches him in the face. Zigzagged in regards to both men vying for Brandy, as they both admit defeat after she chooses Pockets. By the end, they seem aware of this trope, as both go to Paris after the summer ends to fight over a girl they both know.
Godzilla Raids Again, the second Godzilla film overall and the first where the title character fights another monster, introduced Anguirus, an ankylosaur-like monster that duked it out with Godzilla through Osaka before ultimately being killed by a bite to the neck. Since then, subsequent appearances of Anguirus in future Godzilla films have presented him as a good friend and ally to Godzilla, ready to assist the big G in combating any threat that needs to be dealt with (though it hasn't been established whether or not this is the same Anguirus from Godzilla Raids Again, or a second one altogether that never engaged Godzilla in a fight).
Prince Barin spends the middle third of Flash Gordon trying to kill Flash, then joins him when Flash defeats him in a "battle to the death" - and then saves him from a very, very long fall.
End Of Watch: After trading insults with a suspect, Zavala agrees to fight him. Zavala's victory, as well as his decision to only arrest the gangbanger on the original charge of disorderly conduct (when he could have added assault on a police officer), wins the gangbanger's respect.
In The Grand Budapest Hotel, Gustave beats up a cellmate for questioning his virility, with the explicit purpose of gaining their respect. It works.
Older Than Dirt, coming from the oldest surviving written heroic epic (ca. 2700 BCE): In The Epic of Gilgamesh, Gilgamesh and Enkidu become friends after Gilgamesh defeats Enkidu in a fight.
A likely inspiration for the trope's appearance in anime is the legend of Minamoto Yoshitsune's defeat of the monk Benkei on the Gojo Bridge in the 12th Century A.D. Minamoto spared Benkei's life, after which Benkei swore to serve him to the death. The story bears an uncanny resemblance to the story of Robin Hood's first meeting with Little John, but they could simply be examples of parallel invention.
Robin Hood gains many of his Merry Men this way, though often it's him that loses. His magnanimous behavior, rather than his skill at the contest, convince people to follow him.
In Tales of MU, Sooni's belief in this trope is central to her Wrong Genre Savvy. She believes herself to be in a Shojo anime, with herself as The Hero and Mack as the evil, demonic, Schoolgirl LesbianRival who needs to be defeated to become her friend. When Mack continues to refuse to admit defeat and cede the election to her, she flies into a homicidal rage and begins attacking her, to the extent that the almost-invulnerable Mack ends up in the hospital (granted, this was mostly because Mack was using more magic than she should have been, but still). Sooni later visits Mack and happily tells her that she has defeated Mack, and therefore they can be friends now. Mack is naturally furious, but then the story heads for a Double Subversion when Mack agrees out of exasperation, pity... and Foe Yay. Blatant Foe Yay:
"Subtext!" Sooni said, practically dancing with joy. "See? We have subtext now!" "I'm not sure that qualifies as sub anything."
In Christopher Stasheff's The Warlock In Spite Of Himself, a goon named Big Tom picks a fight with the hero, Rod Gallowglass; when Rod proves he can best him, Tom asks humbly to be Rod's man. Subverted in that Tom is a canny agent of Rod's enemies, taking advantage of this trope to get close to him.
A rare pre-emptive example occurs in the Malloreon, when Emperor Zakath finally dawns to the awareness that the Alorn religious myths are real, and Belgarion isn't just a rival overlord but also the designated custodian of cosmic power. Zakath takes one look at the odds and decides to just skip the "defeat" and get right to the "friendship", although it's implied that it's not Belgarion's power that is Zakath's reason, it's the fact Belgarion's so humble and so unwilling to use or abuse such power that makes Zakath realise that the only reason they're enemies is because he was looking to fight someone who didn't want to fight him.
Belgarion: Oh yes. [The Orb] has no conception of the word "impossible". If I really wanted it to, it could probably spell out my name in stars. * Orb twitches* Stop that! That was just an example, not a request. * Belgarion grins sheepishly* Wouldn't that look grotesque? 'Belgarion' running from horizon to horizon across the night sky?
Zakath: You know something, Garion? I've always believed that someday you and I would go to war with each other. Would you be terribly disappointed if I decided not to show up?
In The Dresden Files novel Turn Coat, Harry calls up the very foreboding spirit of an island and essentially challenges it to a contest of strength and will. By winning, he forges a magical alliance between himself and the spirit. He later explains it in terms of this trope: see the quotes page.
While the Great Skeeve normally plays this straight during his Myth Adventures, he subverts it in the sixth book, Little Myth Marker. After thwarting the Ax, a "character assassin" hired to ruin his reputation, Skeeve flatly refuses a request to join his group, which the Ax had grown fond of. His reason is that, while he doesn't hold a personal grudge against the assassin, because Skeeve's team often succeeds on The Power of Friendship the fact that the Ax makes money by betrayal leaves a bad taste in his mouth.
Happens rather regularly in Stackpole's X-Wing Series books. All right, so the Rogues kill or drive off most of their enemies, and the retreating ones are still enemies. But when they, for example, shoot down the freighter ship that is the only way the TIE fighters could get out of the system, the TIEs tend to surrender, and Rogue Squadron accepts readily. Once this happened near a station that the Rogues had just captured, and the highest-ranked TIE pilot who had just surrendered warned the leader of Rogue Squadron that the station master was wily. It's a little different in Aaron Allston's parts of the series.
Justified group example in There Will Be Dragons by John Ringo. The inhabitants of a town are rather irritated with the legionnaires stationed nearby. The farmers and craftsmen all work hard for their living, while the soldiers are just lazing around in the woods, and coming to town with lots of unearned money and making trouble. Tension is high and there are fights between townspeople and soldiers. To solve the situation, the legionnaires challenge the town militia to a mock battle, and proceed to beat them soundly. The townspeople realize that the soldiers are not just lazing around, but are training hard to be able to defend the town if needed. And all are friends again.
Aliens try this on an interspecies scale in Larry Niven's Footfall—they figure humanity will either submit to their armies, or accept the submission of their armies, and either way it'll lead to good relations in the long term. They're quite surprised when humanity responds with total war.
In War Horse, the two horses Joey and Topthorn start out as rivals, but after Joey (Captain Nicholls astride him) defeats Topthorn during a practice run race, they become friends.
In Protector of the Small, this happens a couple of times with Kel, although more in the vein of "newfound respect" than outright friendship. In Squire she's defeated in a joust by a conservativenote i.e. anti-female knights knight, but he's impressed by her considerable skill and apologizes for misjudging and making assumptions about her. In Lady Knight, she meets one of the bandits she rallied her fellow trainees to defeat back in Page, as a convict soldier. He's quite happy to meet her again and glad to serve under her; he even proudly relates the story to all the refugees.
Tarzan has an example in Tarzan and the City of Gold. Lord Greystoke finds himself battling "the strongest man in Cathne," Phobeg, in a gladiatorial combat for the pleasure of Queen Nemone and the crowd. Tarzan quickly turns it into a Curbstomp Battle, but refuses to Finish Him!! Later, Phobeg tells the Lord of the Jungle, after having (twice) proven his friendship, "Because I owe my life to you," replied the warrior, "and because I know a man when I see one. If a man can pick Phobeg up and toss him around as though he were a baby, Phobeg is willing to be his slave."
Occurs on both the individual and national levels throughout the Safehold series:
Four of the five nations whose navies were conscripted to attack Charis in the first book are now part of the Empire of Charis. Two of those nations were outright enemies of Charis, and a third had betrayed an alliance before coming back. In the cases of the two enemies, the nations were conquered and their rulers surrendered, but have since become integral parts of the Empire.
Among the individual leaders, Sharleyan had never wanted to take part in the attack to start with and becomes one half of Charis's Ruling Couple. Cayleb himself is surprised later to find that he actually likes ex-enemy Prince Narhmahn once he got to know him. Corisande's prince would've been an Enemy Mine (at best), but his successors become very close to Cayleb and Sharleyan. King Gorjah, the betrayer, finds his principles again and is forgiven, if not welcomed, back into the fold.
Live Action TV
On Buffy the Vampire Slayer, Anya's first two appearances actually have her as the (or one of the) villains of the episode.
Andrew was originally one of the Big Bads for Season 6, was a hostage for a bit after killing long-time minor character Johnathan and then became one of the Scoobies.
And on Angel, the Big Bad of the first four seasons, Wolfram and Hart, becomes an ally (or the employer) for the fifth, after the defeat (murder) of its representative, Lila Morgan, and the defeat of their 4-season-long master plan. (They at least set things in motion by bringing Darla back, having Drusilla re-vamp her, and so on). It's an example of the trope where the corporation is the character and one that changes the very structure of the show, since the nemesis from the first episode onward is transformed into the ally. Very Wheedonesque.
Invoked on Burn Notice, when Michael has to gain the trust of an enforcer for the Russian Mob that he has captured. He pretends to be another member, locked in the same cell. They fight, and, typical on this show, Michael narrates the action by describing the importance of learning Russian martial arts if you're going to pretend to be Russian.
Another example is Sugar, the drug dealer from downstairs. He gets himself a quick curbstomping during the pilot, but years later shows up again as one of Michael's biggest fans and a useful contact in the narcotics community.
On Leverage, Nate chased all of the team members when he was previously an insurance investigator. One flashback reveals that Nate and Sophie even shot each other when he was chasing her.
On Disney's Davy Crockett mini-series, Mike Fink becomes friends with Davy and Georgie after the beat him in a riverboat race.
Rumpole of the Bailey: In "Rumpole and the Married Lady", Horace Rumpole by an underhand trick makes neophyte barrister Phillida Trant (acting for the prosecution against him) quote legal precedent to such an extent that it antagonizes the judge and she loses the case. It turns out to be the beginning of a beautiful friendship.
On the short-lived Brooklyn South, an arc had two cops becoming more and more antagonistic to each other until they finally had a knockdown brawling fight, to the point of minor injuries—after which they respected each other and cooperated.
The last season of The West Wing largely focuses on the presidential election between republican Arnold Vinick and democrat Matthew Santos. The winner ends up offering his competitor the job of secretary of state.
In The Sydney Scroungers, Greg, a guard for the Wulagu Syndicate, was shot in the leg and brought on board to interrogate, but he ended up befriending his captors (mostly through unflinching sarcasm) to the point where they rushed into a combat situation to rescue his boyfriend.
Traveller: During the Interstellar Wars a number of Vilani defected and took the Terrans side. This was especially the case with the Khimashargur who were Space Cossacks that had fled from the vilani mainstream because of philosophical differences, and held a resentment against the Vilani government.
Rayman: After defeating the first boss, a huge mosquito, it starts crying, and when Rayman pats it on the back they form a friendship and actually work together in the next level.
Command & Conquer Red Alert 2: Happens in the Soviet campaign of Yuri's Revenge when they defeat the Allies and team up to take on Yuri's forces.
...and vice versa in the Allied Campaign, although the Soviets using time travel to force a different outcome is much more plot-critical.
Civilization 5: Bismark's Furor Teutonicus creates a chance that barbarians will join you after taking their encampment.
The Mongol scenario also has militaristic city-states provide you with soldiers when you conquer them.
Final Fantasy games often require you to defeat various monsters as bosses before they offer you their power as Summon Magic.
In Final Fantasy IX, Amarant is a bounty hunter hired to kill Zidane and company, until they best him in a fight and he decides to throw in with them. This is one part honour and one part trying to figure out exactly how he beat him.
In Final Fantasy VII, it's Yuffie, who joins your party after a fight in an attempt to screw you over. Eventually becomes a sincere member of the party after you save her from Don Corneo.
In Final Fantasy VIII, half of the game's Guardian Forces as fought as bosses, including the first boss, Ifrit, and must be defeated in a boss fight before you can use them.
In Final Fantasy XIII-2, Most of the monsters you beat (non-boss only) become your familiar and help you in fights.
In the Shin Megami Tensei series if you defeat a boss you can create it through fusion, and this will remain in the compendium even in New Game+ and can be summoned regardless of level provided you have enough money to summon it.
Devil Survivor has the Nintendo DS lookalike COMP, which upon activation summon a demon for you to fight. If you defeat it, it will become your subordinate. And then a fraction of the way into the game, Midori defeats a Jack Frost and teaches him about The Power of Love and Friendship.
A few days later, he reappears and depending on your choices, you can recruit him into your party on the last day.
Played with in Persona 4: after each member of the Investigation Team confronts and comes to terms with their Shadow, the physical manifestation of their worst qualities, that Shadow will turn into their Persona, which they can control.
This is the hallmark of the Touhou doujin game series. The only playable character that didn't start as a boss is Reimu herself. In fact, almost every game ends with the good guys sitting down for tea with the bad guys and unlocking a bonus stage.
It's also heavily implied in the backstory of the goddesses in Mountain of Faith. Kanako defeated Suwako to conquer her kingdom, but didn't exile her and agreed to share the shrine.
One of Reimu's alternate outfits/color schemes in 12.3, Hisoutensoku, is a Shout-Out to the Nanoha herself. Makes sense, as they both are fans of Friendship Through Superior Firepower.
In Touhou Labyrinth, a boss fight with one of the major Touhou girls always ends with the girl (or guy, in the case of Rinnosuke) in question "joining" Reimu's party in the post-battle cutscene. How willing each girl is at the matter varies individually, though.
This trope finally got averted with Double Dealing Character's Big Bad, Seija Kijin, who got the societal upheaval plot of the game rolling by manipulatingShinmyoumaru Sukuna into doing her bidding. As it turns out, in Impossible Spell Card, following the events of DDC, she was branded an outlaw and hunted by everyone for all the shit she stirred up.
In Sonic Adventure 2, Shadow is an exception in that he's the one orchestrating the evil, so even after his defeats at the hands of Sonic, he continues to be evil. His Heel-Face Turn comes later. Also, this is played straight with Knuckles, who manages to befriend Rouge after he defeats her in a battle, and soon afterward saves her life and earns her respect.
Super Smash Bros. Brawl uses this as a common means of getting new allies in the Subspace Emissary mode. The odd thing is that you can often fight as either, so it works both ways.
In Disgaea, Flonne, Hoggmeiser, Maderas, and Gordon all get converted to Laharl's side after he beats them handily in boss battles. Also, defeating a monster-type enemy makes it available for you to create and use in battle. Killing more and more of the same type results in it costing less and less Mana to summon. If you're impatient and have strong characters not in play on the field, you can also just throw an enemy monster-type into your base panel (where your characters start in a given battle) and, if your reserves can subdue the monster, that monster will join your team assuming you defeat the others.
Disgaea 3's Raspberyl is a big believer in this trope. In the ending to the first chapter of Raspberyl Mode, her advice for making friends is as follows: "First, bust into their house... then, use your passionate fists and fight them till the end. Once the two of you collapse to the ground and start laughing, you guys will always be friends."
All the members of the main cast of Disgaea 4 who aren't with you from the beginning join after being defeated. Tyrant Valvatorez takes this concept to its logical extreme by making it a literal in-game ability - any enemy he defeats becomes a CPU-controlled ally for the remainder of the battle.
In Phantom Brave, killing a few of an enemy type will make it possible to recruit that enemy type.
In La Pucelle Tactics, if you "purify" any enemy before killing it, it will join your party and can be fielded immediately if you don't already have 8 units in play.
In Makai Kingdom, Zetta can challenge and beat most of his fellow overlords and obtain either them or some other form of stand-in (they've got netherworlds to run, after all) as party members — including Laharl — during a New Game+. Just don't expect this to work on Salome, though.
Disgaea 2 has Yukimaru, who joins you after Adell beats her in the tournament and talks her down from probably-very-honorable-but-not-really-wished-for suicide.
Soul Nomad & the World Eaters has Odie as a main story example, and Asagi and Lujei as Bonus Boss examples. The Demon Path is full of this, but it's more a case of 'defeat equals slavery' there — except for the previous villains, who line up to join you with a smile on their faces.
In the Expansion Pack to Baldur's Gate II, you can recruit Sarevok, Big Bad of the first game, into your party. This is after you've killed him. Twice. A popular mod also allows you to recruit Big Bad of the second game (that's the one this is an expansion to). After killing him. Twice.
Shar-Teel, in the first Baldur's Gate is less over-the-top version, as she simply insists on dueling a male member of your party before she joins you.
Knights of the Old Republic has you, in one of your early missions as a Jedi, track down and defeat the fallen Jedi apprentice Juhani. After you duel her, you can talk her back to the Jedi path with relative ease. Or kill her, if you're Dark Side-inclined, but that's more than a bit of a waste.
Bully: After Jimmy beats up all of the nerds, he says that he did it so they could team up to take over the jocks. Earnest, the leader of the nerds even says "You have a strange way of making friends!"
Saints Row IV features two previous adversaries as prominent allies of the Boss (now the President of the US): Benjamin King, the former leader of the Vice Kings from the first game who was forced to drop his flags after an attempted coup in his organization, now the President's Chief of Staff; and Matt Miller, the leader of the Deckers from the third game, who was defeated by the Boss and likewise forced to flee, now a member of MI6. In addition, enemies from previous games, like Maero, Phillipe Loren, and Tanya Winters, can be recruited as Homies after defeating them in Loyalty Missions.
Tales of Symphonia has this in spades. Sheena joins you after beating her twice. Regal joins almost right after defeating him. Many bosses often convert to your side as friendly NPC's once Lloyd beats the stuffing out of them. With an epiphany speech tossed in for free.
The sequel, Dawn of the New World, gives you the option (almost requirement) of recruiting monsters after defeating them in battle.
Tales of Vesperia also does this, only with Duke, the final boss. Yuri and friends beat the crap out of him, then completely forgive him after he joined their cause and helped to defeat the Adephagos. Despite the whole, y'know, attempted omnicide thing.
Also with Raven, only the eventual defeat didn't so much cause the friendship as affirm it.
Tears To Tiara 2 Hamil defeats Aemilia, proving to her that there's still hope, that there's people hard at work at fixing what The Empire had let fall to ruin, and that there's people willing to fight for the sake of others. And of course his father was her ally at court. She quite eagerly joins The Party and put her administrative skills to use.
Magic Knight Rayearth: In the SNES RPG, similarly as in the animé, every major antagonist will have a change of heart and join your party, and then leave right before you fight the next major antagonist. Except for Caldina, who lets you hire her for 3000 gold if you want her to tag along, and doesn't tag along if you don't hire her. But Fenrio, Ascot, and Lafarga all join your party temporarily, after they are taught the meaning of friendship, or in some cases, de-brainwashed.
In Ristar, a weird alien kid follows you around stage 5-1 in the background, and at the end of the stage you must beat him in a Snowball Fight. Later on, when you fight the stage 5 boss he helps you.
Both subverted and played straight in Grandia with Gadwin's two duels, the first being an impossible boss fight.
The GBA remake of River City Ransom allows you to recruit most of the gang bosses into your party after you beat them. You can even recruit the old Big Bad to use against the Bonus Boss.
An odd variant occurs in The Force Unleashed: rogue Jedi Master Rahm Kota is defeated and apparently killed by Starkiller in the first mission (he doesn't bite it). Much later, after Starkiller's death is faked by Vader, they run into each other again under Imperial fire, and immediately team up, forced together by circumstance. Their earlier struggles are quietly forgotten.
Big Boss, as a younger man, seemed to attract a number of allies in this way. Ocelot, Python, and Gray Fox. Though in Python's case, they were already friends before they were dropped on opposite sides of the conflict, and after finishing their fight, they were friends again.
Before founding MSF, Big Boss - still calling himself Snake - ambushed a squad of Revolutionaries in Spain and took out half the unit. As he left, a drill sergeant yelled at Snake to help him kill himself and then tried to suicide bomb Snake's squad because of his Japanese pride. When he passed out from blood loss, Snake saved his life. Two years later, Snake and Kazuhira Miller have opened up Militares San Frontiere.
Kaz: Why'd you save me, your enemy, after I tried to kill you?
Snake: Because you swallowed your pride and fought with everything you had
Kaz: I just didn't wanna lose
Snake: You found a way to fight back even in the face of death, even when you knew you were gonna die - That's the mark of a true warrior
Metal Gear Rising: Revengeance has a villainous example with Samuel Rodrigues. Initially he sets out to stop World Marshall, but joins them instead after being beaten by Senator Armstrong.
Nintendo and Sega were very bitter rivals during the 16-bit era Console Wars, but after an embarrassing defeat with the Sega Dreamcast causing them to give up consoles, Sega now happily makes games for Nintendo's systems.
Devil May Cry has Dante and Lady team up after the former defeats the latter as a boss. The same goes for Dante and Nero, sort of.
More like Defeat Means Grudging Allegiance in MechWarrior 4: Mercenaries; you can challenge a Clan colonel to an honor duel. If you win, she is bound by honor to serve your merc company (as a pilot, so don't get any wrong ideas, mkay?). Your second-in-command calls this out as an unreasonably bad idea, and while Falcon doesn't disobey orders, she's not exactly happy with the whole arrangement.
In Pokémon, the Friend Ball automatically makes anything it catches friendly to its owner. Otherwise, catching a Pokemon only guarantees obedience; captured Pokemon will start with a rather low happiness rating.
In the 2nd Gen games and remakes, defeating certain trainers prompts them to give you their phone number, allowing you to call them every now and then, and them to call you for a rematch or give you useful items or information...or just annoy you by telling how they almost caught that Pidgey for the millionth time.
In the 5th Gen games, you can fight and beat Doctors and Nurses on the routes. Once beaten, they will heal your party for free every time you talk to them. Since they tend to hang around in places far away from cities, this is very helpful.
The fan comic CharCole shows some more reasons for Pokémon to follow their trainers: "Charlie" Cole eventually agrees out of concern for Brian and his other Pokémon(s), while Raijal's Pikachu, Kraker, apparently just likes to fry some Pokémon butt and be praised for it.
This trope has a major role in Pokémon Mystery Dungeon. After an enemy faints there's a percentage chance that they will want to join your rescue team. How likely this is is affected by the many different aspects, such as level, the Pokémon being recruited, etc. So it's a whole game based on this trope. However, you have to leave the dungeon "successfully" in order to keep them, and not all Pokémon can be obtained this way.
In Pokemon Mystery Dungeon Explorers, it's changed so all you have to do is beat them. If your party's full, they just teleport out. You no longer have to complete the dungeon with them. Success!
Pokémon Mystery Dungeon: Gates to Infinity goes an extra step and makes the "defeat" part completely optional for most Pokemon. Once you've defeated a species of Pokemon, you'll usually get a recipe for a gift specifically for that species, which when presented to them, will immediately cause them to ask to join your team. However, evolved Pokemon are exempt from this, and some species lack gifts specifically for them, instead requiring a much rarer gift that works on a particular type of Pokemon instead.
The concept behind the captures in Pokémon Ranger is conveying one's feelings of good will to the Pokémon, requesting their (temporary) help in whatever heroic campaign you are undertaking. It's really not as cheesy as it sounds.
The Black/White generation of games hints that most of the wild Pokémon you come across want to be caught so they can get stronger and see new places. An NPC who apparently figures out how Pokemon feel about you by looking at their footsteps tells you that ones that like you fairly well hear wild Pokémon telling them that they've forgotten what it's like to be wild, whereas Pokemon who love you see the wild Pokémon as envious of the partnership.
In Black2/White2, the three Legendary Pokemon Cobalion, Terrakion, and Virizion (collectively called "The Three Muskedeers" by fans) clearly want to battle you. When they each appear, it's as if they were waiting for you to come. Latios or Latias (which one depends on the version) is even more eager to battle you; instead of standing still like most Legendaries do, it actually rushes up to and starts the battle whether you want to or not!
Shows up in PokéPark Wii with a twist - battles are only one of the skill games, with tag and hide-and-seek being the other two competitive ones.
This is one of the ways to obtain additional Pokémon in Pokémon Rumble. The chance of it occurring is normally rather low, but when attacking enemy Pokemon, they have a random chance of becoming dazed and defeating them while they're in this state guarantees that you'll obtain them.
In Battle For Meridell, a game available on the website Neopets, you battle monster versions of the species you can fight as. When defeated, they turn good and fight for you. This also works both ways, as them defeating one of your characters turns them evil (and makes them lose any equipment they were carrying).
In the NES version of Double Dragon III, the bosses of the China (Chin) and Japan (Ranzou) stages join your side after you defeat them. Interestingly, they actually become playable characters, allowing you to continue if Billy or Jimmy is killed or even to temporarily use their strengths (powerful claw punch and speedy ninjato respectively) where most useful.
In Mega Man Powered Up, The Updated Re-release of Mega Man 1, if you defeat the bosses using only Mega Man's Buster said boss will be left intact upon defeat and be taken back to Dr. Light's lab for repairs, making them playable. Using any other weapon will just destroy them.
This is the standard mode of character recruitment for the Wei campaign in Warriors Orochi, though most of the time it's more "defeat = forced to join your side". Eventually, though, Wei defects from Orochi control and a large chunk of disgruntled ex-Wei officers show up to help. The other campaigns are a mix of this and Big Damn Heroes.
In Star Ocean, if Ratix tries to reach C rank in the arena after a certain plot event, Tinek Arukena will announce that he wants to fight Ratix since he finds him a worthy opponent, then leaps in from the audience bleachers and replaces the end boss for the fight. If you defeat him and has less than eight members, he'll join up afterwards. (If you have no free spaces, he just leaves.)
Marcus the super mutant from Fallout 2 narrates to the player a one-on-one battle between himself and a member of the Brotherhood of Steel. After three days the two combatants reconcile, become good friends, and found a town together. Doesn't quite fit the trope 100%, as Marcus seems to imply that the fight was a draw.
In Cave Story, the protagonist does this to Toroko, Curly Brace, and eventually Balrog. In Toroko's and Curly's case, it's because they preemptively attack him, thinking he's a killer—so by defending himself and not killing them, he wins their trust. In Balrog's case, it's because Balrog is a decent guy, only working for the Big Bad because he's magically forced to do so.
this can happen with Zevran, potentially leading to a romance, as well as Loghain.
Played with in the case of Loghain though; while the player may forgive him for showing remorse as he is defeated, Alistair will most certainly NOT. He becomes infuriated with the player, reminding them of all the evil Loghain has done in the recent past, contrition or no.
This is the stated endgame of the Qunari (a religious force, not a race) - once they've beaten an enemy, said enemy is "re-educated" to embrace the Qun, which is the Freedom from Choice philosophy of the Qunari. Of course, if a prisoner is particularly stubborn, they're just turned into a mindless laborer using a substance called Qamek.
Marvel Ultimate Alliance 2: Deadpool does this after you prove you're not aiding the terrorist attack in his debut level. In the penultimate level you fight Green Goblin and Venom, and when you defeat them to free them from The Fold they go into an Enemy Mine with you, so it sort of counts, though both are very agitated working alongside their archnemesis Spider-Man.
In RosenkreuzStilette, Spiritia has to fight her friends to get them to listen to her, which is no easy task given they are all magical girls. And then there's Grolla trying to convince them that an "unassuming" child is behind all the madness.
The Suikoden series is full of this trope. There are 108 recruitable characters in each game, and many of them start off as enemies, or simply won't join you if you can't defeat them in a fight. In the first game, 3 of the 4 enemy generals join up after they're beaten, though you do have the option of killing them instead, but this is not recommended as you won't get the "good ending" because you didn't gather the 108 Stars of Destiny.
This occurs once in Valkyrie Profile. Throughout the game, you witness the deaths of heroes, and recruit their souls for Ragnarok. At one point, the Valkyrie is commanded by the goddess Freya to kill a wizard named Gandar and take his soul. After he's dead, he refuses to join up with Valkyrie. She gives him the ultimatum of joining her or being sent to Hell. He grudgingly accepts.
In Paper Mario, Lakilester (AKA Spike) fights Mario on Huff N. Puff's orders. After Mario beats him, he joins his party.
A few of EarthBound's supporting characters are introduced as bosses, even one in particular who helps you defeat Giygas.
In Recettear, Charme gives you her Adventurer Card a few days after she's defeated at Jade Way, allowing you to recruit her for other missions. The same goes for Tielle and Griff as well.
In Banjo-Tooie, Terry, the boss in Terrydactyland, accuses Banjo and Kazooie of stealing his eggs, and they fight him in a boss battle. After Terry is defeated, Banjo says that they haven't stolen his eggs, and offers to look for them for him. After finding them, he thanks them and rewards them with a Jiggy.
Invoked in Golden Sun: Dark Dawn. The spirit of the sentient Sand Prince Gem is enthusiastic in greeting the party characters and happily offers them his/its assistance... but he/it needs them to pass a test of character before they can use him/it.
Djinn throughout the series operate on this principle.
Inazuma Eleven is chock full of this. Even the most evil people become good by the end of the third games after you have beaten them again and again. Bonus point goes to the fact that you can recruit almost every of them into your team.
Opponents also become allies after they are beaten in Danball Senki, which is from the same creator as Inazuma.
In Sin and Punishment: Star Successor, the Griffin Keeper boss of Stage 5 befriends the main characters after they defeat it, and it offers to carry them to their destination Mt. Fuji.
In Solatorobo, a quest with Alman has him asking Red to teach his new apprentice to work harder. The apprentice wants none of it, telling them to leave him alone, and eventually prompts Red to fight him. Once beaten, his attitude does a 180 and he'll do anything "Boss" Red tells him to, including working as hard as he possibly can.
In Advanced Variable Geo, this is Yuka's fighting style. More specifically, she has the ability to form an empathic bond with those she fights; once she's in tune with their soul, she's able to defeat them spectacularly, and whoever she defeats has a high probability of becoming a fast friend with her.
I Miss the Sunrise has the twist in that you need to fight them twice. Jessamine is fought as a Mini-Boss towards the beginning of His Master's Voice, and can be fought again as a Bonus Boss later. They join your party after that.
In The Elder Scrolls V: Skyrim, there are several NPCs who invoke this trope. When you talk to them, they challenge you to a fistfight. When you win said fight, they become much friendlier and most of them will even join you as a follower if you ask.
There is one particularly racist NPC who manages to zigzag this trope, should you challenge him as an Elf. After you defeat him, he will switch between his usual racism, proclaiming you to be a cheater, and this trope, calling you a good friend.
One of the staples of Dragon culture is the belief that the strongest is meant to lead, hence Dragons who survive clashes with another frequently offering their allegiance to the one that bested them. Odahviing and Durnehviir end up invoking this towards the Dragonborn during the main game and in the Dawnguard DLC; the former defecting in the belief that Alduin lost his right to command after he fled battle with the Dragonborn, while the latter does so out of respect for the Dragonborn being the first individual to ever best him in combat. After the defeat of Alduin, many of the Dragons under his command switch their loyalty to Paarthurnax, who leaves to instruct them in the Way ofthe Voice.
In Pirate101 some enemies will join the player's crew after they have been defeated.
Assuming you don't want to use the Classic Cheat Code to unlock him, this is how you get access to Roo in Streets of Rage 3, albeit in a different manner than normal. You have to leave him alone during the brawl against him and his trainer and only defeat the trainer, at which point you can select Roo when you have to use a continue from then on.
This is done twice in the Black Side (Jack Cayman) story in Anarchy Reigns. The first time it happens is with Big Bull, whose fight was supposedly Jack's induction into his brotherhood. As such, Big Bull returns from time to time to help Jack out. The second time it happens is with Rin Rin, who "owes her life" to Jack after he opted not to kill her after beating her. She also returns to help Jack out from time to time.
In the original MLB Power Pros game, when your character defeats the Champion Rings in Success Mode, and subsequently their ace pitcher Zero Gibson, Zero learns about friendship from your character, and Zero "appoints you" to be his friend, which gets a deadpan reaction from your character.
Multiplayer games with auto-balance have a form of this. Is your team outnumbered by at least two players? The next enemy one of yours takes down will defect to your side.
Subvertedmost of the time in Fire Emblem. Recruiting enemy forces to your side is a major mechanic in every game, but this is normally done by getting someone the enemy knows to talk to them and convince them to join you without fighting. With only a few exceptions (such as Shinon in Path of Radiance and Walhart in Awakening), defeating a recruitable unit in combat will kill them, not recruit them.
In Little Busters!, this is how Masato and Kyousuke first met and became friends and so is how Riki and Masato renewed their friendship in Refrain. Masato also insists they do this to get Kengo back into the Little Busters, insisting that 'when two men cross fists, a spontaneous friendship will be formed.'
Rosof Tions of Drowtales ends up becoming Quain'tana's most loyal follower after she defeats the leader of his minor clan and defeats him in single combat. His advice and actions led to Quain'tana's clan becoming one of the most powerful clans in their entire kingdom and he harbors an unrequited love for her.
Played with in Misfile while most of Ash's races are nothing more than just races (some friendly, some less so), when Ash gets defeated by Kamikaze Kate it is Kate that declares Ash not only to be her friend, but surrogate "little sister".
Played straight in Erfworld with Ansom, although this is largely due to a MacGuffin whose entire purpose is to have this result. When it raises you from the dead. Though everyone at least suspects that mind control is involved, with most people believing it completely.
El Goonish Shive clearly wants to subvert it at the climax of Sister II, even using the title "Not Quite BFFs", but no one actually expected it in the first place.
Played straight in Our Little Adventure. Pauline the barbarian joins the group after getting defeated in combat.
Inverted later in the comic when Norveg 'defeats' Angelika by deflecting a thrown bottle at him back at her. Norveg joins her after as her familiar.
A rather extreme example in Fite! — once Lucco takes the upper hand while fighting Guz, Guz suddenly puts down his sword and gives Lucco a big ol' hug.
Karin-dou 4koma: Seren killed an ancient dragon after an epic battle, but they came to a Worthy Opponent-like understanding by the end. The dragon's reincarnation is now Seren's adopted daughter, Tamaryu, and they get along quite well.
Mal and the giant flesh eating ceiling squid in Cthulhu Slippers become this after Mal sets out to see if Jiu Jitsu works on giant carnivorous cephalopods (answer: no). The squid even protects Mal from knife wielding cultists.
Britain: "From the frozen wastelands of North America to the jungles of Africa I have fought you. Yet together, we have accomplished some amazing things. As the world changes, there is one thing that will always remain constant: the future does not seem so dark if I face it with you...my old enemy...my rival...my neighbour...my ally..."
Wyn from the web fiction serial Dimension Heroes makes a deal with Rob: if he can defeat him in battle, he'll join them in their fight against the Dark Overlord Clonar. And maybe become their friend, as well, but that might be pushing it.
Played straight in The Leet World with Cortez and the Domination Guy, who is hired by Cortez's insane brother Mendoza to kill him. However, Cortez earns his respect when he beats him in single combat. While the Domination Guy doesn't join Cortez's side, he does return later in the series to save Cortez's life during the final confrontation with Ahmad.
Appropriately enough, given Stinkoman's clichéd shonen personality, in the Homestar Runner cartoon "20X6 vs. 1936", Stinkoman befriends The 1936 Homestar Runner soon after being defeated with a pea shooter.
The gas mask wearing man in One Hundred Yard Stare becomes friends with the heroines in this manner after a short altercation.
Chaper 3 of the Book of Villainy of Acts of Gord recounts how a thief was caught for shoplifting, and Gord allowed him to pay (the exorbitantly marked up thief-bait price) for the game he stole, rather than press charges, and the Thief, impressed by Gord's mercy, evidently, became a regular (and proper) customer.
Parodied in Girl Chan In Paradise, where Kenstar just skips the "defeat" part and asks Yusuke (after his revelation as The Mole) to rejoin the team after about a minute's worth of building up to a fight that never happens, to which Yusuke agrees for no real reason.
Garfield and Friends: in the first episode with the singing ants, Garfield joins their ranks at the end after they ruin his picnic.
Dinobot, of Transformers: Beast Wars, joins the Maximals after a heated swordfight with Optimus Primal (which they didn't finish since the Predacons interfered and tried killing them both), impressed by the Maximal leader's honor. (Initially the plan was to kill Optimus and take over. That he thought the other Maximals would fall in line after that says a lot about the Predacons.)
Subverted and played straight in Ben 10, where Ben, feeling some sympathy for Kevin web 11 due to his Freudian Excuse, offered him this after defeating him. Kevin appeared to consider the offers, but only used the opportunity to attempt to backstab Ben. In a later episode, they did have an Enemy Mine following their capture in Gladiator Games, but Kevin attempted once again to kill Ben at the first opportunity. The trope eventually is played straight in the sequel Ben 10: Alien Force, where Kevin is once again forced to team up with Ben for a longer time, leading them to actually befriend each others, but it took a 5 years Time Skip for such a thing to happen, and later episodes reveal Kevin had to recover from his psychosis during those five years.
Happens a lot in The Backyardigans everytime there's a villain. Since it's a kid's show, nobody gets killed off or arrested, so this is the only way.
Also likely because they are using their imaginations and are all friends anyway.
In a Popeye short, Popeye gets roped into being a matador despite his belief that bullfighting is cruel and barbaric, and finds himself facing a typical raging bull. After some cartoon hijinks and the devouring of spinach, Popeye manages to defeat the bull but refuses to kill it, earning the bull's respect, and it carries him and Olive Oyl off as Popeye sings about how he doesn't like bullfighting.
A very rare Space Ghost example in the episode "The Time Machine". After Space Ghost defeats him, the 12th Century Viking Tarko invites him back to his lodge as his guest.
Jonny Quest TOS episode "Calcutta Adventure". When Jonny and Hadji first meet, Jonny thinks Hadji is threatening Dr. Quest (he actually just saved Dr. Quest's life). Jonny attacks Hadji, but Hadji uses a judo move to throw Jonny away and Jonny lands in a heap. After the misunderstanding is explained, Jonny praises Hadji's judo skill and they become friends.
Nightmare Moon is defeated and purified by the Elements of Harmony.
Discord is defeated the same way as Nightmare Moon—he even dares the Mane Six to "Friend me" just before the attack—but the Elements deem him to be undeserving (or incapable) of redemption and instead stick him right back in the Fate Worse than Death he crawled out of. Word of God states that the reason behind the different effect is that Nightmare Moon was under the influence of The Corruption, while Discord was himself a corrupting force. In "Keep Calm and Flutter On," Discord returns and the trope is inverted. Fluttershy becomes the first friend he's had in untold years, and Discord is surprised to realize how much he values her friendship. When Fluttershy finally puts her hoof down and tells Discord that he'll lose her friendship if he keeps being a dick, Discord concedes and undergoes a Heel-Face Turn. Thus, Friendship Equals Defeat.
Happens to Trixie in "Magic Duel". In this case, Twilight Sparkle defeats her by tricking her into removing the Alicorn Amulet which had boosted her powers. When Trixie realizes how much the Amulet had been corrupting her mind, she lets go of her prior grudge against Twilight and asks for forgiveness.
In Kung Fu Panda: Secret of the Furious Five, a short feature that explores the backstory of Kung Fu Panda, we learn that Monkey was once a mischievous trickster, and only become good after being defeated by Oogway.
This is how Lilo and Stitch tame Jumba's other experiments. Stitch fights them and once they're subdued Lilo finds their 'one true place'. Some of them, like Splodihead, even help Stitch befriend other cousins.
Played with on Adventure Time:Finn doesn't defeatMarceline in her One-Winged Angel form, but he does wound her, which impresses her enough that she calls off their fight and returns the house that she had taken from him and Jake. The next episode has him outwit her plans to prank him, and after that they become increasingly friendly.
In many cases, this is a better choice than continuing to aggravate a superior power.
Many animals (dogs, cats, etc.) will squabble when meeting other individuals of the same species; but usually once a clear dominance relationship is established, they will get along fine. A human interveneing in such a squabble can actually be counter productive.
It certainly doesn't work every time, but dogs and cats - mortal enemies when introduced - will occasionally become inseparable friends.
The main example in modern history (although the situation was far more complicated than in fictional stories) was the treatment the Axis nations received from the western allies after World War II. Instead of trying to punish the Axis powers and keep them poor and powerless, the Allies helped them to rebuild their economies and introduce stable democratic systems (while still maintaining military occupation for a good while). The result? More than 60 years of mutual prosperity and relative peace. West Germany in particular was a close friend of the former Allies and a valued member of NATO within 10 years of the end of the war. Today, Germany, Italy and Japan are three of the biggest economic powerhouses in the world and the centers of two of the world's foremost currencies (euro and yen, respectively). And at a more personal level, a number of friendships sprang up between surviving German fighter pilots and their one-time opponents; most famously, German ace Adolf Galland.
Salah-al-Din, a Muslim warlord of Kurdish ancestry, became something of a "Noble Heathen" folk hero to Europeans following his conquest of Jerusalem, which inspired the Third Crusade. According to legend, Saladin made friends with Richard the Lionheart, although in real life they more or less fought each other to a standstill and never met in person. Most importantly was what Salah-al-Din (romanized as Saladin) didn't do: when he conquered Jerusalem, he didn't slaughter the Christians or Jews living there. This is the absolute opposite of what European Crusaders had done when they first took Jerusalem - the Crusaders mercilessly slaughtered every Muslim and as many Jews as they could find. When Salah-al-Din took Jerusalem back, Europe was positive news of massacre would follow, but they never did. Salah-al-Din simply took the city back and nothing more. Hence, the legend of the Noble Heathen. That was because Jerusalem was taken 1099 by an all-out assault, while 1187 Jerusalem surrendered instead of being taken by force. The Medieval custom was to spare the town's inhabitants if the town surrendered; if it was conquered by assault, the town was free to be ravaged for three days and three nights. That said, Saladin was also intentionally invoking the memory of the rise of Islam: almost exactly 550 years earlier, Caliph Umar ibn al-Khattab had taken Jerusalem and entered the city quietly; this conquest had ended several decades where the city repeatedly changed hands between the Byzantine Empire and Sassanid Persia, with the conquerors slaughtering hundreds if not thousands each time for security reasons.note The Zoroastrian Persians were noted for using Jews as agents, while since the Byzantines were Christian they distrusted Christians as possible spies for Constantinople, and contrariwise the Byzantines distrusted Jews not only as "Christ-killers" (as the Church insisted they were) but also as possible spies for Persia. Each time the Persians took Jerusalem, they killed Christians and brought in Jews; every time the Byzantines took it back, they killed Jews and brought in Christians.
Most European countries had other conflicts to worry about and were perfectly happy to ignore the Middle East as long as there was no compelling motivation to have another war. Massacres in Jerusalem or the destruction of Christian holy sites would have been such a reason, and the Church would have forced Europe to put aside their various petty conflicts and launch another crusade. Salah-al-Din was supposedly not stupid and realized what would happen if he played the part of the brutal conqueror.
Britain. After fighting The American Revolution and the War of 1812 with the USA, relations between the two have been quite peaceful. Even before the War of 1812, Alexander Hamilton was a big advocate of this as a way to develop America's commercial economy, though his preferred policies didn't go over that well in the climate of Anglophobia immediately following the Revolutionary War. This doesn't mean that tensions disappeared right away, however. There were still occasional squabbles throughout the middle of the 19th century, particularly disputes over the border with Canada. The major border issues were settled by 1850, and at the same time Anglo-American cooperation started to get going; the original Monroe Doctrine, articulated in 1823, served the purposes and had the tacit support of the British, which is why it was taken somewhat seriously by the European powers. The growing trade relationship between the US and Britain—and between the US and Canada—also factored in, and by the 1880s the US and Britain were warily inching towards the alliance that would come to develop over the past century. America's aid helped in World War I, but it was America's involvement in World War II, providing much-needed support to British troops who had held off a full-scale German invasion longer than any other nation besides Russia, that sealed the two nations' alliance. Since the days of Churchill and FDR, the US and UK have become nigh-inseparable, and have by far the strongest diplomatic and military alliance of any two autonomous nations in the civilized world.
Also the reason why the Nepali Gurkhas fights in the British Army. In 1814, the British invaded the Kingdom of Nepal in order to expand the British Empire; however the Gurkhas fought the British so hard that the British only managed to conquer a third of Nepali land and it took them 2 years and large numbers of casualties to do so. The British were however impressed by the Gurkhas' fighting spirits and abilities so ever since 1816 they have recruited Gurkhas in their forces.
Britain and France, though who exactly defeated who is debatable. Suffice it to say that after nine-hundred years of each nation scheming, fighting, and inflicting humiliating defeat on each other, perfide Albion and "the bloody French" put aside their differences and signed the l'entente cordiale in 1904, forging an alliance that would defeat the Kaiser and Hitler, and that endures to this day.
He and the man who was previously the frontrunner for the Republican nomination in 1860, William Henry Seward. Seward became his Secretary of State and one of his most loyal and trusted supporters. Pointedly not the case with Salmon Chase, the other vanquished rival who joined Cabinet, though.
Earlier in his political career Lincoln played this trope entirely literally. After several anonymous letters were published criticizing auditor of the State of Illinois James Shields, he blamed Lincoln and challenged him to a duel. Lincoln accepted, though, with dueling being illegal in Illinois at the time, the two met on an island on the Missouri side of the Mississippi. As Shields had challenged Lincoln, Lincoln was allowed to select the terms of the duel and chose the cavalry broadsword as their weapon. 5'9 Shields, tall for his day, was still towered over (and more importantly, outreached) by the nearly six and a half foot tall Lincoln, and found it in his heart to forgive Lincoln, who, for his part, agreed to a written apology, and the two remained friends for life.
The trope was still played straight with white Northern and Southerners after the end of The American Civil War, unlike some other places where a civil war leads to a Cycle of Revenge. Unfortunately it was done at the expense of America's black population, who lost a lot of the initial gains (there were several black members of Congress during Reconstruction, and many black members of southern state governments; after that it was effective disenfranchisement and Jim Crow in the south, and a refusal to recognize black contributions to the Union cause during the Civil War) they had made post-war.
In one of the most epic boxing matches ever, George Foreman was defeated by Muhammad Ali in 1974. The two became good friends afterward.
Howard Stern often gained the praises or at least acceptance of many former radio and celebrity rivals once he established his ratings supremacy and celebrity credibility.
The first encounter of Turkey and Australia was on opposing sides of a battlefield in World War I. The conflict was both fierce and gentlemanly - an odd combination which, despite the eventual defeat of the Australian forces, created a bond of mutual respect, admiration, and friendship between the nations which continues to this day.
Bill Clinton and George H.W. Bush befriended after their major political duties passed away, and have spent most of the seubsequent decade co-organizing charity events. Bush took to calling Clinton his other brother for a time.
In 1980, Bush and Ronald Reagan were competing for the Republican nomination. When Reagan won, Bush agreed to be his running mate.
In the Red Hot Chili Peppers, Anthony Kiedis' first encounter with Flea involved telling Flea off for bullying one of his classmates. Then they became friends when they discovered they had similar music tastes.
One of the oldest ones in the book: When Persian King Cyrus the Great conquered a country, he often let its king live, letting him become a royal advisor instead. This most famously happened to Croesos (the King of Lydia and the man who invented money, or rather his grandson), whose later loyalty to Cyrus is documented in several places.
This is how early man tamed and bred dogs by establishing dominance as the "pack Alpha" while offering food and affection. Even nowadays dog owners need to make sure their dogs know that the dogs are their pets and not the other way around.
On the set of Enter the Dragon, a martial artist extra continually challenged Bruce Lee to a sparring match. Bruce accepted, kicked the crap out of the guy as expected, and the extra quickly became his student.
In High School, this tends to happen quite often after two boys get in a fight.
This is not unheard of in the Game Show community. There are several cases where people become friends after one has defeated another on a game show. In particular, the Jeopardy! fanbase is full of former contestants, many of whom lost to each other at various points (either in regular gameplay or tournaments).
Believe it or not, the US and Vietnam are fast approaching this today (although it's more like "Stalemate equals friendship"). The Vietnamese, although obviously not pleased at the American intervention in their country, very quickly entered the good graces of the US after The Great Politics Mess-Up. Currently, the US is Vietnam's largest trading partner (unless you count the whole EU as one unit, in which case the US is second), and the US and Vietnam cooperate on regional issues in Southeast Asia—including tacit US support for Vietnam's position in their numerous maritime border disputes with China. The US assiduously courted Vietnam in the 1990s, and that Vietnam has much bigger issues with China—which has invaded and occupied the country several times over the past...oh...twothousandfrickin'years,note and those are only the times the Chinese actively tried to take over the whole country and succeeded most recently in 1979, and has been trying to mess with Hanoi's business quite blatantly for decades—than with the US. Today, Vietnam is one of the most pro-American countries in all Asia, with a whopping 71% of Vietnamese having a positive image of the US. (This amusingly for those not directly involved causes trouble with the Vietnamese American community, who are overwhelmingly anticommunists from South Vietnam and not happy with the rapprochement and its symbols, like acceptance of the current official Vietnamese flag).
Sports example: professional golfer Jason Dufner lost to Keegan Bradley in a playoff at the 2011 PGA Championship after letting go of a late lead. After the playoff, the two became great friends and often played jokes on each other. Two years later, Dufner would have another late lead in the PGA Championship—this time, Bradley was on his way to the airport and hearing of Dufner's chances, asked to be driven back to the course to await his friend. He made it back in time for Dufner's victory and congratulated him on camera just off the 18th green as Dufner went to have his score verified.
It is rumoured that Stanley Kubrick won the respect of George C Scott during the filming of Dr. Strangelove by beating him in a game of chess. Scott disliked the over-the-top way in which Kubrick wanted him to play the character of Gen. Buck Turgidson, but once Kubrick beat him in the game, Scott began to get along with him and grudgingly complied with Kubrick's instructions.note An alternate version of the story is that Kubrick fooled Scott into performing in an over-the-top way by telling him it was to entertain the cast and crew, and then used that footage instead. However, this is probably not true, given the time and expense involved in re-shooting each scene, and keeping Scott in the dark throughout everything.