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- Mai-Otome: Put the Otome against the HiME, or, more specifically, their resurrected Mai-HiME counterparts.
- Gundam Build Fighters features several models from different series, many of which are modified, fighting it out. So you have situations like the Build Strike vs. the GX Maoh. Heck, the initial episode where these two "fight" has the builders dressed up as Kira and Garrod respectively.
- The Build Fighters Battlogue series has an even more blatant example in its first episode. The Gunpla Battle system has been upgraded with an AI component to act as support for newbies and can imitate famous characters from the Gundam franchise. Tatsuya Yuki and Alan Adams, both humongous Gundam Otaku, decide to test the system out by having AI copies of Char Aznable and Ribbons Almack fight each other. At the end of the short, they're excitedly talking about having Emma Sheen face off against Seabook Arno.
- Yu-Gi-Oh! ARC-V: The entire premise of the series includes dimension-hopping between worlds that are all Alternate Universe counterparts of past Yugioh series, and features several epic battles between opponents whose decks are based on the special summoning methods featured in each past series, along with several Freeze-Frame Bonus shots of minor characters from past series making minor appearances, along with two major characters from 5D's, one from Zexal, and two from GX returning in full. This gets much more complex than most viewers were expecting.
- This image◊, called War of the Worlds (Война миров), painted by the Russian contemporary artist Nikolai Kopeikin depicts an epic but gruesome battle between cartoon characters of mostly Western Animation and Russian Animation. Not only this picture is an example of the trope but it also stresses the rivalry between domestic and foreign animation in Russia.
- Anachronism: A card game that lets you pit various historical (or somewhat historical, like Robin Hood) characters against each other. For more fun, trade the character's goodies around — give Achilles Beowulf's chain mail and Miyamoto's katana.
- Superfight! is another card game in this vein, where each player plays a character card and two power/problem cards (one on their own character, another on an opponent's character), then debates over which creation would beat the character of that round's judge in a fight, resulting in match-ups like Mr. T with an assault rifle and riding a unicorn vs. 3 Stephen Hawkings with the Force.
- Batman and Dracula: Red Rain finally put to rest an age-old debate: The Dark Knight or the Prince of Darkness? Dracula and Batman fight over Gotham City to find out who the true master of fear and deception is. They both lose. Dracula is killed and Batman becomes an irredeemable vampire.
- Dracula vs. Superman: By hypnotizing Lois, Dracula actually gained the upper hand and succeeded in drinking Superman's blood. However, Superman is solar powered, and seconds after drinking his blood, well... imagine eating a grenade.
- Superman vs. Muhammad Ali
- Freddy vs. Jason vs. Ash is a comic run about a three-way batle between them.
- The Dark Knight Returns has Superman vs. Batman. Batman wins... sorta. It's complicated; what are you doing here? Go read it.
- Then there's one in Superman/Batman issue 78, which handled the subject masterfully. The fight happens, but suddenly you see a narration, or rather, two narrations arguing against each other. Eventually, it is shown that two kids, one a fan of Superman and the other a fan of Batman, are arguing who wins. After much Ass Pulls done with each argument, the two kids agree that the two are friends and would not fight each other. Towards the end, we see Superman and Batman observing the kids. Superman wonders who would win and asks Batman what he thinks, but Batman just flies away. Batman believes Superman will win.
- JLA/Avengers, has (as you've no doubt already guessed) the Justice League of America vs. The Avengers.
- Wizard Comics ran one issue of Goku versus Superman. And unlike in that Death Battle, Goku won, in his base form, no less.
- The Unbeatable Squirrel Girl:
- The first issue has a faked fanmail column consisting almost entirely of "Who would win in a fight, Squirrel Girl or [insert character here]?"
- Galactus is heading toward Earth, cloaked in a stealth field ("...but he forgot to make it work on squirrels!",) so fans will finally see that match-up.
- This is the entire premise of My Little Pony Vs.
- Fantasy of Utter Ridiculousness asks the question: "Who would win in a fight between Megas and Suika Ibuki?" The answer: Marisa Kirisame. The Extra Stage asks the same question with Yuuka Kazami taking Suika's place.
- Rich's ComixBlog has a story that pits LaCroix against the Master. Another story pits the Daleks against some Xenomorphs.
- Weiss Reacts has the Gurren Lagann against the Nirvash. The Gurren Lagann wins, barely, through Blake being a Determinator of the highest order.
- Later, Weiss against Glynda. Weiss wins by using an antic, ironically.
- Even later still, the Gurren Lagann, the Nirvash and the Shinkiro against the Voxes. Nobody wins: the Jersey Club and the Beacon gang team together to beat Tukson up for daring to intervene.
- Hokuago Tea-Time vs Team RWBY. The former win by being better musicians and being adorable. Blake is not happy. And the convention chapter has Adam and Raven, which nobody wins, although both are forced to retreat due to outside circumstances.
- Coreline name-drops this Trope on its Opening Narration and delivers big-time: a post-apocalyptic world where superheroes that are fusions with other franchises and canonical supers beat the hell out of each other, Naruto-verse Ninja and One Piece Pirates try to kill each other in earnest on the high seas (with the occasional additional gunfire from Pirates of the Caribbean pirates and other types of ninja), Gundams face off against Battlemechs, MannCo. fights Torgue-Urdnot in a Corporate Warfare race to out-badass each other... and the more-than-occasional Badass Bystander that is sick of all the shit will try to bring the fight to a stop via gunfire (and maybe they will be packing something like a Mass Effect weapon or a Torgue gyro-jet rifle or a BFG designed by Brianna Diggers or being juiced out of their minds on Slaught... or all of the above).
- The Series Finale of The Conversion Bureau: Worlds Where It Wouldn't Work, pits Fannon character Tyrantlestia, against Cannon Celestia in Screw Attack's Death Battle style fight. A decently written character, beats a God-Mode Sue.
- The Comic Book Universe Battles, which started in 1997 as a sub-section of a Xena: Warrior Princess fan's Callisto fansite and eventually grew into something all its own. Seen as a friendly rival by the above Grudge match it later stopped proposing scenarios and let users submit, debate and vote on them. Currently user voting is down indefinitely but some of the scores are still in the database. In the late 2000's (around 2008 or 2009) the site was revamped to include 2 vs. 2 and 3-way battles as well as reintroducing the ability to submit characters to the database, however unfortunately at the end of 2013, the site's creator and owner stated that the CBUB (and its sister site the Fantasy Powers League) would be shutting down permanently.
- Numerous websites dedicated solely to what faction from Star Wars and Star Trek would lay the ultimate smackdown upon all the others. StarDestroyer.net is a particularly (in)famous one, and SpaceBattles.com caters to all kinds of sci-fi matchups but is invariably dominated by Trek vs. Wars as well as the occasional just-for-fun curbstomp (the Orcs from The Lord of the Rings vs. modern machine guns, carpet bombing from B-52s, an orbiting Imperial Star Destroyer, and finally, the real kicker, doze udda Orkz). Both of these websites more or less grew out of the Usenet newsgroup alt.startrek.vs.starwars.
- "Dream Tournament", a popular series of vote-driven fanfics on the Usenet group rec.games.video.arcade from the mid-'90s, pitted Fighting Game characters from different games against each other. The Tournament gave rise to several spinoffs, as well as many Fanon personality traits for the characters.
- There was an old fanfiction Dream Tournament called the Ultimate Video Rumble, where some truly memorable fights happened both within and without the arena. Highlights include Haohmaru and Genjuro of Samurai Shodown fame clashing swords furiously, while everyone who attempts to break their battle gets tossed aside, and dysfunctional organizers and security staff who make Eddy Gordo of Tekken fame suffer after he got eliminated from the ring. The UVR was a deliberate spiritual successor to the first three Dream Tournaments, continuing many of the fanon events and characterizations from the DT.
- Stefan "Twoflower" Gagne organized a Round Robin tournament featuring characters from all over anime (and sometimes, beyond) called Magical Troubleshooting Crossover Fighting Federation ULTRA. The various writers used and abused pretty much the entire Professional Wrestling trope list, with backstage plots ranging from mere personal power grabs and Mind Control to Third Impact and wresting Godhood from Kasumi Tendō Herself. The golden rule staving off the inevitable Fan Boy flame wars was understood to read, "Anyone, under the right circumstances, can defeat anyone else in a fight." The only systemic exceptions to this idea were made to account for anime-style "weight restrictions." It's worth noting that the story of how Kasumi became God and several other plot points such as Dark Sakura originated from MTCFF Beta which was a single-elimination tournament decided by votes rather than by individual authors, with such oddities as Fusion character "Nario" resulting from Naru of Battle Arena Toshinden and Mario of Super Mario Bros. tying in votes.
- "Hitler continued laughing, then finally said 'Goku! You came here expecting to find a madman, but instead, you found a GOD!' Hitler had become a Super Saiyan." How's that for a Crack Fic-style showdown? See it right here in all its Not Safe For Sanity glory. By the way, it also ships Goku x Anne Frank.
- Ultimate Showdown tournaments are a common occurrence on GameFAQs' "Board 8", allowing users to debate to the most extremely geekish limits possible about who'd win. The arguing can lead to some, hmmmm, very curious victories (Apparently, The Mask can just barely beat Broly with cartoon physics, the most powerful Darkstalkers can win left and right merely based on their vague backstories alone, Voldemort can upset Nanoha's constant nuking of areas and people and the Doctor can defeat The Flash with, uhhh, timey wimey stuff. Or prep time. Or whatever).
- The RPG Duelling League is a site dedicating to deciding which Video Game RPG characters would win in a fight. The site is organized into 6 week long elimination tournaments (refered to as seasons) with four different Character Tiers (Light, Middle, Heavy, and Godlike). The voters who decide who wins are also strongly encouraged NOT to vote according to popularity or plot powers, but rather comparative in-battle capabilities and performance.
- Sites like Comic Book Resources and Hero Chat have their own (Comic Book Rumbles and It's Clobberin' Time!, respectively), among many, many other websites. They often don't like each other. Most infamous incident was a flame war and board raid between Rumbles and Star Destroyer, after Rumbles determined Borg Cubes can destroy the Death Star. Cue Fan Wank and board raid.
- Factpile mostly runs on this trope. It has branched out to include other topics, but is still mostly battles between fictional characters. It has also determined the outcome of the page image Superman easily wins.
- Make Your Move applies this to Super Smash Bros. with movesets for everything from King K. Rool to Socrates.
- Deadliest Fiction Wiki: using the formula from Deadliest Warrior, but for warriors of any media and franchise, with the warriors chosen by logical debates from the members of the site. It's essentially The Wiki Rule for Ultimate Showdown of Ultimate Destiny.
- Tor.com: Tor Books' website holds yearly "cage matches" pitting various fantasy characters against each other in a single-elimination tournament, with the characters' creators invited to write how they think each of their characters' battles would go.
- "Valve World", showing Team Fortress 2 Then Counter-Strike, Dota 2, Left 4 Dead 1 and 2, Half-Life 2, Deathmatch Classic, Day Of Defeat, Alien Swarm, Portal and then ending on Half-Life.
- The Outskirts Battledome exists for people to speculate who would win in a fight between two fictional characters or real-world people.
- The Alterverse War: Kristofer Straub, the author of Starslip Crisis, put togheter Fuseli vs. the Touch and Go the Fuseli won, but only due to some clever maneuvering.
- A now-gone discussion on the World of Warcraft forums about which of the capital cities in the game would be most defensible against attack. One side said the Undercity (the underground sewers and basements of the destroyed city Lordaeron, the Forsaken capital) would be the hardest to assault, and someone said they'd just put poison gas into the surface vents.
"What kind of gas would work against the undead?"
"...well played, sir."
- This Bites!: Even in One Piece, this is Serious Business. Cross's lie that he and Mr. 13 were fighting over who is the strongest of the Four Emperors (and Mr. 13 said Kaido) leads to a street brawl among the onlookers that ends up setting half of Mock Town on fire.
- The Bridge: Bagan, resident Big Bad and a kaiju easily titled a deity; versus Harmony, living incarnation of the Tree of Harmony and source of Equestrian magic. Marginal victory to Bagan, Harmony couldn't stop Bagan and Bagan couldn't kill Harmony. Though Bagan did succeed in cutting her off from helping the heroes due to their battle's collateral damage, a secondary goal.
Films — Live-Action
- Marvel Cinematic Universe:
- The Avengers: Thor vs. Iron Man, with Captain America joining in at the end, and we get to see Mjölnir vs. Captain America's shield. Thor vs. The Hulk.
- Captain America: Civil War is a massive extravaganza of this, starting off with Winter Soldier vs. Black Panther vs. Captain America, leading into a re-brainwashed Winter Soldier curbstomping half the cast, leading into the titular all-character melee featuring pretty much every possible combat matchup between any two characters on opposite sides and culminating in Ant-Man vs. all of Team Iron Man, leading into Cap and Winter Soldier vs. Iron Man after Tony sees that one video.
- Mega Shark vs. Giant Octopus: Exactly What It Says on the Tin, and Vs. R. Lee Ermey, with a cameo from Billy Mays.
- The Forbidden Kingdom: Jet Li vs. Jackie Chan. It was a draw, though Jet Li has gone on record as saying that in a no holds barred fight, Jackie would wipe the floor with him.
- Freddy vs. Jason. Two popular eighties Slasher Movie icons duke it out for the right to slaughter teens.
- Frankenstein Meets the Wolf Man, the very first Famous Monster vs Famous Monster movie. Universal then did two more (House of Frankenstein and House of Dracula), adding Dracula to make it a Triple Threat.
- Fast Five: Vin Diesel vs. Dwayne Johnson. Yes, it's as awesome as it sounds.
- Who Framed Roger Rabbit features a piano duel between Donald Duck and Daffy Duck, which quickly escalates into an actual duel.
- King Kong vs. Godzilla, in which two giant monsters created in different countries beat the tar out of each other. The victor is ambiguous in the film, but Toho went on record giving the win to King Kong.
- The Black Cat: Bela Lugosi vs. Boris Karloff. And it is awesome.
- Batman v Superman: Dawn of Justice Where Superman and Batman throw down on the big screen.
- Sadako vs. Kayako: Cinematography's two most famous onryō throw it down in The Grudge match of 2016.
- Way of the Dragon features Bruce Lee vs. Chuck Norris. Lee wins by snapping Norris's neck.
- Rocky Balboa centers around an in-universe example, as a simulation between Rocky and current heavyweight champion Mason Dixon prompts enough media buzz to lead to a real exhibition bout between them.
- "Shark vs. Train": Parodied in the children's book which takes the more common sense approach, with hilarious results (it matters, for instance, whether the competition is under water, or involves trying to sell lemonade).
- 1906: Arsène Lupin vs. Sherlock Holmes, by Lupin's author Maurice Leblanc, as an Affectionate Parody. Soon afterwards, Arthur Conan Doyle complained and, from the following edition onwards, the story became Arsène Lupin vs. Herlock Sholmes (or, in some versions, "Holmlock Shears").
- Animorphs: Huge fanboys Jake and Marco from like to argue about whether Batman could beat Spider-Man.
- Older Than Dirt: The Iliad is this to a significant portion of Greek mythology, including the gods themselves. It also makes clear that Zeus would win with one arm behind the back if he decided to join the frame (so he claims, and the gods, speaking from experience, don't dare to contradict him)... And that's why he stays out of it.
- David Weber's Out of the Dark and vampires versus aliens. And that's just the first part of the trilogy!
- The climax of Ready Player One becomes this due to the major players all piloting simulations of Humongous Mecha from 1980s pop culture, culminating in a showdown between the protagonist's Ultraman and the Big Bad's Mechagodzilla.
- "Bear v. Shark" by Chris Bachelder could be termed the discussed version of this trope.
- In The Flash (2014), the first ever crossover with Arrow in 2014 is titled "The Flash vs. Arrow", where Oliver Queen has to take on a Brainwashed and Crazy Barry Allen.
- In Legends of Tomorrow, the episode "The Justice Society of America", has the Legends take on said titular team, and losing spectacularly.
- Once again in The Flash, the 2016 "Invasion!" crossover had Team Arrow (Spartan, Speedy), the Legends (White Canary, Atom, Firestorm, and Heat Wave), and Supergirl get mind controlled by the Dominators, forcing Green Arrow and the Flash to fight their friends. Oliver takes on the Badass Normals while Barry fights the ones with superpowers. Oliver manages to fight off most of the heroes before Wally West/Kid Flash comes in and assists. Barry takes out most of the heroes with lightning throws before he's left in one fight against Supergirl.
- Arrow's season 5 finale has this with heroes and villains pulled from throughout Arrow's history in one giant showdown. The contenders include Oliver Queen, Malcolm Merlyn, Nyssa Al-Ghul, and Slade Wilson, facing off against Adrian Chase, Talia Al-Ghul, Evelyn Sharp, and Captain Boomerang. The stakes being Oliver's legacy and the fate of his family. As a bonus, Dinah Drake and Black Siren pit their Canary Cries against each other.
- Marvel Cinematic Universe's Netflix shows.
- In How I Met Your Mother, Barney, Marshall and Lily go to the event "Wrestlers Vs. Robots" where Mexican-style wrestlers battle a variety of robots.
- Deadliest Warrior: A Spike TV show which explores "history's greatest killing machines", looks at their historic backgrounds and the science behind their equipment and fighting styles, and pairs them off in a one-on-one computer simulated fight. Showdowns include "Gladiator vs. Apache", "Ninja vs. Spartan", "Taliban vs. IRA", "Yakuza vs. Mafia", and "William Wallace vs. Shaka Zulu".
- Jurassic Fight Club: A History Channel show, similar to Deadliest Warrior in that it uses best available knowledge to establish the abilities, strengths, and weaknesses of the animals, then CGIs the actual fights. Match-ups include Allosaurus vs. Ceratosaurus; Mega-Lion vs. the Short-Faced Bear; and Megalodon vs. Brygmophyseter, the "biting sperm whale".
- Animal Planet had a short lived series called Animal Face Off, which was basically Jurassic Fight Club done with living species that plausibly might confront one another in the wild.
- Harry Hill's TV Burp: "Well, I like X, but then I also like Y. But which is better?" [Costumed/made-up/bewigged representations/impersonators of X and Y crash into studio from opposite directions and make a beeline for each other] "FIIIIIIIIIIIGHT!!"
- Doctor Who:
- The original series episode "The Mind Robber" eventually, through convoluted means, features a sword fight that involves Cyrano de Bergerac, D'Artagnan, Blackbeard, and Sir Lancelot.
- And "Doomsday" brings the fight people had been wanting for decades: Daleks vs. Cybermen.
- The novel "All-Consuming Fire" had Sherlock Holmes and the seventh Doctor square off with the Cthulhu Mythos.
- Saturday Night Live: Spoofed in a recurring sketch in which George Wendt leads a cadre of football fans who speculate on the scores of hypothetical games pitting the Chicago Bears against other teams, with the Bears facing increasingly unlikely handicaps, such as being shrunk to the size of midgets. (Hint: Da Bears win.)
Wendt: Who would win, the Death Star or the Enterprise?
- Star Trek has an episode in which aliens set up an Ultimate Showdown: Kirk, Spock, Abraham Lincoln, and Surak versus Colonel Green, Kahless, Zora, and Genghis Khan.
- Super Sentai do this about once a year as a movie, usually by having the current Super Sentai meet up with the previous year's Super Sentai in a Let's You and Him Fight scene before teaming up to take on the Big Bad of the film.
- Samurai Sentai Shinkenger met up with Tensou Sentai Goseiger for a movie in 2011.
- Kaizoku Sentai Gokaiger then met up with Tensou Sentai Goseiger before taking on Space Sheriff Gavan and going on to fight Kamen Rider Decade, the last done two months after their own series ended.
- Kamen Rider × Super Sentai: Super Hero Taisen pits the Kamen Riders (led by Decade) against the Sentai warriors (led by GokaiRed). Kamen Rider Fourze and the Tokumei Sentai Go Busters eventually pop up and ask why they're even fighting in the first place.
- Kamen Rider Decade: For the Kamen Rider series. Decade can take on the form and powers of the last nine hero Riders, allowing match-ups like Kuuga vs. Kiva, Kiva vs. Knight and so on.
- Angel: In one episode, Angel and Spike argue vehemently over who would win if astronauts and cavemen got into a fight. Even better, they somehow manage to get all of the other main characters at the time to argue over this. Through the entire episode.
Wesley: Ah. You've been yelling at each other for 40 minutes about this? ...do the astronauts have weapons?
Angel & Spike: [in unision] NO!
- One episode of Game of Thrones opens with two Lannister soldiers discussing who's the best fighter in Westeros. They've narrowed it down to Ser Jaime "Kingslayer" Lannister, Ser Gregor "The Mountain" Clegane, and Ser Loras "The Knight of Flowers" Tyrell. Their discussion is cut short by the Stark army.
Soldier #1: What about Loras Tyrell?
Soldier #2: He's been stabbing Renly Baratheon for years, and Renly ain't dead!
- Buffy the Vampire Slayer has an episode called "Buffy vs. Dracula". The titular fight ends inconclusively, with Buffy killing the Count, but with him clearly able to come Back from the Dead at will.note The show also had to break many of its own rules about how its vampires work * in order to pit Buffy against a recognizable version of Dracula; the whole episode relied heavily on Rule of Cool.
- Discussed in The Big Bang Theory when the guys argue over which fictional characters, mostly superheroes, would best who in a fight.
- Jeopardy!: After Ken Jennings' 75 wins in 2004, the producers held the "Ultimate Tournament of Champions", which ran from February to May 2005, inviting 145 previous tournament winners and 5-time champions who competed against one another. The tournament was littered with upsets and dark horse victories in the early rounds. Of the "Nifty Nine" champions that were byed to the second round following their record setting and accomplished prior runs on the show, seven of them lost their opening game, with only Brad Rutter and Frank Spangenberg advancing to the quarterfinals. Of the thirteen previous Tournament of Champions winners who started in Round 1, only four made it to Round 2 (Ryan Holznagel, Michael Dupee, Dan Melia, Mark Dawson), with only Melia making it to Round 3.
- The trope is named for the song and flash animation "The Ultimate Showdown of Ultimate Destiny" by Lemon Demon, in which many famous fictional characters, pop culture icons and historical persons come together for the sole purpose of knocking the living crap out of each other. (The last one standing is Mister Rogers in a bloodstained sweater.)
- Defied in Ookla the Mok's "Stop Talking About Comic Books or I'll Kill You":
- The promotional war and invasion angles can end up like this trope, in theory. In practice, they tend to be disappointments. One owner often refuses to acknowledge another organization as worth comparing to their own, and as such they usually end up being fake crossovers. The most famous flop among fans in the USA was WCW invades the WWF, an invasion angle In-Name-Only. Vince's kids just aligned a bunch of WWF wrestlers, some of whom happened to have gained some prior fame elsewhere. Some of whom. The prior NWA invades WWF was a truer example of this trope. New Japan's invasion with Universal Wrestling Federation did actually involve both companies but was so one sided it actually contributed to the latter's death.
- Among some other examples truer to the spirit of this trope were AJW vs LLPW, WWF vs Smokey Mountain Wrestling, Ring of Honor vs Dragon Gate, ROH vs IWA Puerto Rico, ROH vs CZW, CZW vs IWA Mid-South, New Japan Pro-Wrestling vs Pro Wrestling Noah, All Japan Pro Wrestling vs Pro Wrestling Zero 1, NJPW vs ROH, WSU vs Beyond.
- Subverted with Perros Del Mal Producciones, a company based around CMLL's main rudo faction that was planned to be used for these purposes but broke away to make a deal with AAA. When PDM "invaded" AAA, the established rudo stables welcomed them into their Sociedad.
- This is the purpose of the World Wrestling League's Dream Match Tours. It gets together wrestlers working in different promotions and countries who may otherwise never fight or team up, or at least may not do so anywhere where the target audience can see it.
- Don Bradman and Babe Ruth, widely recognized as the greatest ever players in cricket and baseball, respectively, met each other in 1932. While they didn't play against each other, certainly not in any formal capacity, Bradman offered Ruth the chance to try his hand at cricket. Ruth started by trying to bat cricket-style, and struggling to lay bat on ball, before switching to his baseball stance and hitting the Australian bowlers around the park. Ruth also took Bradman to watch a Yankees game, where Bradman surprised his host by spotting a double-play.
- Boxing had three of them, all of them featuring Muhammad Ali:
- The Fight of the Century, the 1971 fight between WBA/WBC heavyweight champion Joe Frazier and lineal champion Muhammad Ali. It was the first time two undefeated heavyweight champions had met in the ring. Frazier won by decision in 15 rounds.
- The Rumble in the Jungle, the 1974 bout with heavyweight champion George Foreman. Ali, having come off his suspension from boxing for draft evasion, had successfully battled his way back to the top of the boxing world to take back the title from Foreman. Ali won the fight by knockout in eight rounds.
- The Thrilla in Manila, the 1975 rematch between Ali and Frazier, in which Ali won by TKO in 14 rounds to become undisputed heavyweight champion and taking a 2-1 career lead over Frazier.note
- Then in 2017 the "showdown" many people had speculated on over the years between pro boxing and Mixed Martial Arts happened, when champion boxer Floyd Mayweather Jr. met MMA champion Conor McGregor for a one-off fight using boxing rules. The referee stopped the fight after ten of a maximum twelve rounds when McGregor failed to defend himself, giving Mayweather victory. However, many observers who had expected the fight to be one-sided were surprised by how well McGregor performed under boxing constraints.
- Who Would Win?: Exactly What It Says on the Tin. Two players each get a random character, and then an event. Argue why your character would win. Santa Claus vs. Genghis Khan in synchronized swimming? Babar vs. Einstein in ping pong?
- Monsterpocalypse has basically two lines: one based on its own Fantasy Kitchen Sink setting, and one based on Voltron. Two compatible lines. Meaning you can end up with Drule Empire vs. Not Zilla Terra Khan or even Voltron vs. Cthugrosh.
- The Alien vs. Predator franchise is entirely devoted to this trope.
- Dissidia: Final Fantasy: The game, and 012 pit the lead characters from the first ten Final Fantasy titles (first thirteen as of 012, and the first to a lesser extent) against each of their respective arch-foes from their respective worlds with the fate of The Multiverse at stake.
- Scribblenauts: allows for a nearly infinite number of these. Bigfoot versus Longcat, God + Shotgun + Skateboard versus Cthulhu, T. Rex versus Robot Zombies... The fourth video found here takes this to absurd lengths.
- M.U.G.E.N: A custom Fighting Game system which allows characters from different fighting games to battle aginast each other. It's gotten popular on YouTube, especially Perfect Cell vs. Dio Brando, where Dio wins using his famous steam roller attack.
- Capcom vs. Whatever: The Intercontinuity Massive Multiplayer Crossover Fighting Game series where a bunch of unconnected Capcom properties and unconnected properties from another company come together to see who's the best.
- Warriors Orochi: Koei's video game crossover between their Three Kingdoms China Dynasty Warriors and their Sengoku Japan Samurai Warriors franchises. By Warriors Orochi 3, they also tossed in Guest Fighters Ninja Gaiden's Ryu Hayabusa, and The Trojan War's Achilles.
- Dynasty Warriors: Gundam: And when they didn't stop with Warriors, they decided to do the same thing to Gundam. But there are few things more awesome than watching completely unrelated Gundams ripping suits by the hundreds.
- Cartoon Network: Punch Time Explosion and its updated sequel basically answers the questions of: what would happen if Ben 10 and Samurai Jack met in a dark alley, Father and Aku had a little fiery feud, and Blossom and Dexter teamed up to fight Vilgax and Grim in Stormalong Harbor. The game answers these questions, and a whole lot more.
- A mod for Doom Source ports, Samsara allow you to play as Doomguy, Chex Warrior, Corvus, B.J. Blazkowicz, Parias, Duke, Security Officer, and Ranger. And in any game outside their own, their characters even have respective Idiosyncratic Difficulty Levels depending on which one you chose. They're also balanced for class based gameplay in deathmatches, capture the flag, etc.
- Doomguy: Damage (His weapons pack a heavy punch, particularly the Super Shotgun).
- Chex Warrior: Defense (Fred Chexter comes from a kid friendly game that contained Non-Lethal KOs, thus he takes the least amount of damage from attacks).
- Corvus: Utility (Heretic's inventory system allows Corvus to deploy a variety of items).
- B.J. Blazkowicz: Marksman (Wolfenstein 3D didn't have any shotgun type weapons and the weapons were pinpoint accurate).
- Parias: Brawler (He moves the fastest and takes reduced explosion damage, allowing him to get up close).
- Duke: Crowd Control (Duke uses a jet pack and weapons with wide spread but can't take a lot of damage).
- Security Officer: Suppression (Despite having a reload system and bullets not being Hitscan, the Security Guard's weapons have Secondary Fire and can saturate the area with weapons fire).
- Ranger: Artillery (Ranger works the best using the rocket launcher, not only for raining hell but also for performing a Rocket Jump for mobility, it gets even worse for his enemies should he find Quad Damage.)
- Mortal Kombat:
- Mortal Kombat vs. DC Universe: The final epic battle ends in a draw with only Superman and Raiden left standing, but the storyline does feature DC characters winning more fights than MK characters, due to their side of the story being a chapter longer. Perhaps most notable is a scene where a weakened Captain Marvel is able to defeat Scorpion, Baraka, and Shang Tsung in quick succession.
- Mortal Kombat X has become this through DLC Guest Fighters including Jason Voorhees, Predator, Leatherface, and a Xenomorph-Tarkatan hybrid.
- Super Smash Bros. is the Nintendo example of this trope, as it pits the Nintendo characters against each other outside their respective worlds. As of the third game, third party characters have been joining the fun as well, allowing for match-ups like Mario vs. Sonic, Link vs. Cloud, or Kirby vs. Pac-Man, to name a few.
- SoulCalibur 3, 4, and 5 all have the Create-A-Soul mode, which lets you build completely original characters. The games provide armor and equipment that lets you create characters from pretty much any franchise (within reason) and pit them against each other to see who's best. Some characters can be recreated with a striking degree of accuracy. You want one of the Doctors? You can do it. Batman? Harley Quinn? The Joker? No problem. Zoidberg? WHY NOT ZOIDBERG? The Undertaker? Absolutely. Bad Box-Art Mega Man? Paunchy stomach included. Phoenix Wright? No objections here. Want to make the Power Rangers? Just pick a color. Cyclops? Jean Grey? Them and other mutants too. Pikachu? I CHOOSE YOU! The Missing No? Somehow... yes. Doctor Doom? Heck yeah! Austin Powers? YEAH, BABY! Chuck Norris? Do you even need to ask? Finn, Jake, and Princess Bubblegum? MATHEMATICAL! Jamie Hyneman? Myth Busted. Queen Amidala? The Force is strong with this one. Motoko Kusanagi? 5 lets you recreate her right from the moment you first pop in the game. The characters are nearly endless, and all yours to pit against each other as you wish. Just check out this Tumblr for hundreds of recreations from 5 alone.
- Speaking of which it was about the time that one of the default create options was Chun Li that the WWE Games and others like them showed they were serious about this trope, going as far as having actual wrestlers where this could be invoked. Could Hulk Hogan beat "Stone Cold" Steve Austin or John Cena? Please, why stop there? Ever wondered who the best fighter in Star Trek is? You can get your answer here. Think this is way to show it's better than Star Wars? Which obscure characters do you want to make up to prove it? Want another Final Fantasy fighter? Just pick the costumes you want them to wear. Could Kasumi or Ryu beat Tina or Bass in their natural environment? Why not? What about if a fighter from SoulCalibur could hang without weapons? Could you, yourself, win NXT? Try it. Is Kim Possible really a better fighter than Buffy the Vampire Slayer? Or Buffy better than Faith? Or Commander Shepard? Heck you could recreate a fight in Arrow or have them fight someone from Archer if you wanted.
- Asura's Wrath: Lost Episodes 1 and 2 pits Asura against Street Fighter IV's Ryu/Evil Ryu and Akuma/Oni. The latter had to be buffed up to Asura's level to stand a chance, of course.
- Quake III: Arena: pits Doom, Quake, Quake II, Wolfenstein 3D and Original Generation characters against each other in a fight for supremacy.
- Sherlock Holmes versus Arsène Lupin: The Frogware 2007 game, known in some countries as Sherlock Holmes: Nemesis.
- The Family Guy vs. American Dad! web fighting game in promotion of the series' DVD releases; Ryu is the game's boss.
- In the Half-Life mod The Specialists, most character models are from some action movie (and two from video games): Smith Agents and Morpheus, from The Matrix; Castor, from Face/Off; Agent 47, from the Hitman series; and Gordon Freeman wearing a black trench coat. This means that it is impossible to play the game without an epic battle between action icons, unless everyone is using the generic Mercenary and Seal skins.
- Project X Zone gives us Yuri (with Estelle), considered as the biggest badass protagonist of the Tales Series versus Sanger, Banpresto's biggest walking badass for one fight. This game also gives us Dante (with Demitri), versus Jeddah, a fight we wanted to see back in Capcom Fighting Evolution.
- Super Robot Wars Z has one battle where half of the cast filled with famous Humongous Mecha anime fight with another half the cast filled with famous Humongous Mecha anime. Who wins? The side you control has to win, so you can progress through the game.
- PlayStation All-Stars Battle Royale: it's right there in the title.
- In-universe example in Brothers in Arms: Road to Hill 30: Allen and Garnett start two missions by having an argument regarding who would win a fight between Batman and Superman.
- Star Wars Battlefront II has this as a mode on one map. In normal gameplay, a lucky player can become a Hero Unit such as Obi-Wan or Darth Vader. Mos Eisley offers an Assault mode, which is usually only seen in Space battles. This version has every single Hero Unit duking it out on one map. Every. Single. One. Yoda, General Grievous, Ki-Adi Mundi, Boba Fett, if he or she appeared on another map, he or she'll appear here.
- Thanks to the Puzzle & Dragons collaboration series, players can send a team consisting of Goku, Cloud, Red, Shinji (and Unit 001), and Hello Kitty off to fight Darkseid. Unfortunately, while both Goku and Superman are in the game, neither appear in the dungeons for the collaborations (most of them are villains only). So that showdown is avoided.
- Super Robot Wars Original Generation The Moon Dwellers delivers one hell of a showdown between Sanger Zonvolt, a German samurai fresh from his Project X Zone adventures (see above), and Al-Van Lunks who is an alien knight. And both men use a BFS as their primary weapon. To explain further: In Al-Van's debut game, a lot of his sword skills were very similar to Sanger's (who has debuted long before Al-Van), so fans have been clamoring for their showdown long before Judgment gets included into the OG-verse. The fans got their wish.
- The Legend of Heroes: Trails of Cold Steel II has the two protagonists, Rean Schwarzer and Lloyd Bannings meeting and fighting against each other during the Divertissment Chapter. Although players are controlling Lloyd and Rixia for this fight, the end result was that both had a stalemate, right before Rean brings out his big guns.
- Ultimate Epic Battle Simulator is designed with this trope in mind, allowing players to pit a wide variety of fighters and armies against each other. As of the time of writing it allows historical factions such as World War II-era US Marines and Roman legionnaires, fictional units such as zombies and orcs, wildlife such as chickens and penguins, normally inanimate furniture such as cupboards, dinosaurs and Chuck Norris. Later updates would add armies such as ogres, Jedi and Stormtroopers (albeit not named that for copyright reasons) and mechs from RoboCop.
- Fate/stay night revolves around King Arthur, Gilgamesh, Hercules, Medea, Medusa, Cu Chulainn, Sasaki Kojiro, The Hashshashin and Angra Mainyu being summoned into modern day for a fight to death.
- Fate/Zero Follows King Arthur, Gilgamesh, Lancelot, Diarmuid Ua Duibhne, Alexander the Great, Gilles de Rais, The Hashshashin and Angra Mainyu in a similar war.
- Fate/EXTRA changes it to Nero, Tamamo-no-Mae, Cu Chulainn, Lu Bu Feng Xian, Francis Drake, Gawain, Robin Hood, Li Shu Wen, Alice, Vlad III and Vairocana, along with the creators' own Arcueid Brunestud and Shiki Ryougi.
- Fate/Prototype has King Arthur, Gilgamesh, Perseus, Cu Chulainn and The Beast in a fight to the death instead.
- Fate/Apocrypha takes it Up to 11 by having Siegfried, Chiron, Vlad III, Astolfo, Avicebron/Solomon Ibn Gabirol, Frankenstein's Monster, and Jack the Ripper working together as the Servants of Black to fight the Servants of Red, consisting of Mordred, Atalanta, Karna, Achilles, William Shakespeare, Spartacus, and Semiramis. Did we mention that they're headed by Joan of Arc and Shiro Tokisada Amakusa?
- Dead Fantasy shows what happens when a bunch of girls from the Final Fantasy series go up against a bunch of girls from the Dead or Alive series. In case you didn't figure it out by yourself, it's fanservice.
- ScrewAttack's Death Battle: sets characters up against each other as well, from Boba Fett vs. Samus Aran to Mike Haggar vs. Zangief to Starscream vs. Rainbow Dash. Notably not decided by votes, but by a look at each side's actual capabilities and extrapolating based on that.
- And for the 25th match they've did one for Goku and Superman. Superman won. Boomstick, one of the show's hosts, was utterly euphoric when the fight finished because it meant everybody would finally stop asking them to do it. Of course, a LOT of people were unhappy with the result, so Death Battle did their first and so far only re-match for the 50th match. Same result. They then laid down very clearly why they were convinced that the fight would never turn out any other way, to curtail this happening again.
- The 35th match was Godzilla vs Gamera. You may squeal now. Godzilla won.
- The 39th match was Deadpool vs Deathstroke. Deadpool won.
- The 44th match was Chuck Norris vs Segata Sanshiro. You may faint and/or orgasm now. They destroyed the universe in a tie.
- The 69th match was Hulk vs Doomsday. Yes it was awesome and brutal as it sounds. Doomsday won.
- The 75th match was the Power Ranger Megazord vs Lion Force Voltron. Yes, all your childhood dreams of giant robots just came true. Voltron won.
- The 85th match was Naruto Uzumaki vs Ichigo Kurosaki. Two members of the Holy Shonen Trinity duke it out. Naruto won.
- Machinima.com has Fallout: New Vegas Wasteland Battles, pitting characters and enemies from Fallout 3 and Fallout: New Vegas against each other, and with the help of mods, even characters like Darth Vader. Not that it matters, because Liberty Prime beats everything.
- Toys vs Toys is a stop-motion time travel story involving Link, Goku, Jean-Luc Picard, and various good guys from several franchises teaming up to stop Darth Vader and numerous bad guys from obtaining a time-traveling machine to take over the universe.
- Tales from the Pit exposes "Who Would Win" as a favorite conversational topic of the Magic: The Gathering R&D team. Pairings include RoboCop vs. The Terminator and My Little Pony vs. the Transformers.
- Dark Horse Comics asked who would win; Dr. McNinja, or Saxton Hale? At the time of this edit, votes are still being accepted. Each character asked fans to vote for them on their respective websites. Votes are already done. Winner: Saxton Hale.
- The Annoying Orange: In one episode, Liam the Leprechaun forces the orange to see if he was more annoying than Fred. It appears to end in a stalemate, only for Fred to get the last laugh.
- Will It Blend?: Anything, at all, versus a Blend-Tec blender.
- The now-defunct WWWF Grudge Match though the archives are still there, listing the more than 200 fights the site has run. The fights are formatted in that there is a proposed scenario and a very tongue-in-cheek debate, after which there will be a vote. When the loser has fallen, often hilarious comments on the result would be posted.
- The Paul Powers Show: Similar to Death Battle, Paul's Who Would Win videos are dedicated to determining who would win in a one-on-one fight between two characters from different franchises.
- The Spoony Experiment has Deadliest Character, a direct take-off of the aforementioned Deadliest Warrior, featuring the Megazord vs. MechaGodzilla. Megazord wins by summoning The Sixth Ranger and tearing MechaGodzilla apart. The uncreated second episode promised a showdown between Dalek and Borg.
- TGWTG Year One Brawl brought together dozens of gamers and reviewers from That Guy with the Glasses for an epic throwndown. The winner: It's a huge draw as a truce is declared when they realize that they are all on the same team at the end of the day.
- The Screamsheet has done weekly fights between a variety of characters since 2000. The fights have a loose continuity and several running jokes, such as Superman always losing and the Earth being destroyed multiple times.
- The Lonely Winds forum has three sub-forums dedicated to various USoUDs in eight different leagues of various power level and compositions.
- History nerds are somewhat fond of debating Alexander the Great vs Genghis Khan. This battle actually happens in Arthur C. Clarke and Stephen Baxter's collaborative novel, Time's Eye.
- Whosthebitch.com was the HQ for a fun and easy game; simply match any two given personalities (or even inanimate objects) and answer the question, "Who's the bitch?" Basically pick which one would be the 'bottom' in a relationship between the two, and justify your answer with an explanation.
- The Galactic Watercooler podcast has a recurring feature called Fantasy Sci-Fi League in which participants choose teams based on specific roles (warrior, pilot, reconnaissance, etc) and place them in a scenario such as the rescue of one of the podcasters from a Klingon prison planet, and give them some basic equipment (such as Carl Sagan's Starship of the Imagination). The winner is chosen based on the most entertaining way of completing a mission.
- The entire premise of Epic Rap Battles of History is to pit (at least) 2 people, usually from different timelines or even universes, to do a Battle Rapping against each other.
- The Brave and the Bold: The Lost Issues often sets Batman or The Thing against various characters.
- Video Game Championship Wrestling is an ongoing web series that uses recreations of both famous and relatively obscure video game characters (as well as some from non-game-based franchises and even a few people from real life) in the ever-glitchy WWE Video Games in AI versus AI matches. It maintains a regular roster of wrestlers, so rematches where a previous winner lost and a previous loser won have happened before, such as Charles Barkley versus Vegeta, and Nappa versus Gabe Newell.
- While this is still upcoming, When Heroes Meet Champions is hyped to be an Ultimate Showdown of Ultimate Destiny featuring characters from the two Multiplayer Online Battle Arena juggernauts, as the title suggested: Dota 2 and League of Legends. Already in the teaser we've seen possible battles of Axe vs Darius, Juggernaut vs Master Yi, Legion Commander vs Katarina, Treant Protector vs Maokai and Tusk vs Vi.
- batinthesun has Super Power Beat Down, which pits fictional characters against each other in live action with great special effects. Victories are decided by fan votes.
- What If's Excellent Heavyweight Adventure uses the time machine from Bill & Ted and the World Cup soccer tournament format to create an Alt History Ultimate Showdown of heavyweight boxers from 1910 to 1988.
- "request of F", an Armored Core fan video made through the use of Miku Miku Dance, showcases mechs from nearly every continuity of the franchise's 17 or so games and pits them into a 3-minute slugfest that doesn't require you to be an Armored Core fan to enjoy.
- The PAX Prime 2015 Acquisitions Incorporated game is called "Darkmagic vs. Do'Urden", Jim Darkmagic being the (self-proclaimed) greatest wizard of the Forgotten Realms.
- Minute Match Ups does this with superheroes on both sides of the DC/Marvel divide, using their recent media portrayal, although the first episode actually matched up Deadpool from the upcoming movie and Deadpool as Weapon XI from X-Men Origins: Wolverine (the former won). The other two episodes match up Green Arrow vs. Hawkeye (Green Arrow put two arrows into Hawkeyes head) and the Flash vs. Quicksilver (the Flash vaporized Quicksilver with "supersonic punch, baby, yeah!").
- It's a frequent enough thread topic on certain imageboards that it's become the subject of parody, such as asking who would win in a fight between a trillion lions and the Sun, or insisting that a stick would be victorious in any matchup you can think of.
- MTV's Celebrity Deathmatch is a claymation version of Exactly What It Says on the Tin. Matches have included The X-Files' David Duchovny and Gillian Anderson vs. Tommy Lee Jones and Will Smith; Bono vs. Fabio vs. Yoko Ono; Bette Midler vs. Cher; and Adam West vs. Christian Bale.
- Bambi Meets Godzilla is very short and... well, let's just say the verdict isn't exactly surprising.
- The Venture Bros.: 21 and 24 often get into arguments about hypothetical fights such as Champ vs. Nessie or Lizzie Borden vs. Anne Frank.
- Adventure Time:
- A college for worms has a "Theoretical fightonomics" class. According to the professor, the winner is always "Werewolf Queen".
- An episode which is simply titled "Who Would Win" has Finn and Jake getting into a very long all-out fraternal punch-up. It ends in a technical victory for Finn, but really in an exhausted stalemate.
- Invoked and Deconstructed in "Frost & Fire" where Finn tries to get Flame Princess to fight the Ice King in a Fire vs Ice themed battle. It ends catastrophically with the Ice Kingdom getting razed, The Ice King almost getting killed, and Flame Princess breaking up with Finn when she learns of the details, because he hurt her. You blew it, Finn.
- The Family Guy episode "The Simpsons Guy" (crossover with The Simpsons) ends with a long, drawn-out battle between Homer Simpson and Peter Griffin reminiscent of the chicken fights from Family Guy (This is hinted to with Comic Book Guy appearing after the fight stating "Worst chicken fight ever!")
- In Home Movies, Brendon, Jason, and Melissa attend a Renaissance fair and reenact a meeting between King Arthur and Robin Hood. When they first meet, they have a showdown in the woods before Arthur decrees that he and Robin Hood are "best friends forever." When Robin Hood crosses a few lines and keeps robbing his BFF, they prepare to fight to the death before they are interrupted by a dragon. They team up to defeat it, only to wonder if they will continue their duel or not. The play gets interrupted before they can finish.
- Yalta, 1942. Winston "Brandy for Breakfast" Churchill and Josef "Steel Liver" Stalin have what is, in effect, a drinking contest. They go at it until three o'clock in the morning, but by one o'clock Churchill, suffering a "slight headache", has switched to wine. At which point Stalin presumably called him a pussy, fist-bumped Molotov, and cracked another bottle of vodka.
- Boxing spar: BRIAN BLESSED vs His Holiness the Dalai Lama. They bonded over their love of boxing in their youths.
- Historical matchups such as Genghis Kahn vs. Alexander the Great have been discussed among scholars.