"To fight monsters, we created monsters of our own."What's better than having a huge monster? Having two huge monsters! Then making them fight each other! A staple of monster- and kaiju-focused movies (but in no way limited to that medium), where two giant creatures square off in a no-holds-barred fight, just because they can. Makes for great visuals and even more collateral damage. As a highly visual trope, only examples shown on-scene should be added. The word creature should be interpreted quite liberally here. It matters more how it looks than how it functions. Giant humanoid robots and other Humongous Mecha are explicitly included. In no small degree builds on Rule of Cool and Cool vs. Awesome. See also Everything's Better with Dinosaurs and Monster Mash. Examples are generally sorted chronologically.
— Raleigh Becket, Pacific Rim
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Anime and Manga
- The entire Super Robot Genre, started with Mazinger Z, is based on this with giant Humongous Mecha battle giant creatures or robot (depending from the work).
- Attack on Titan: The titans don't normally fight each other and go exclusively after humans. but starting on the "Battle Of Trost District" Arc, the Rogue Titan was introduced and it exclusively attacks other titans because said titan is Eren Yeager himself, having come into his power as a Titan Shifter. Naturally, this leads to titan duels and brawls as more shifters are revealed that can completely wreck cities as if they're made of Styrofoam.
- The Big O: the eponymous Humongous Mecha battles other robots (called Megadeus) and a few giant monsters over the course of the series.
- Naruto has Bee/Gyuuki and Naruto/Kurama battling 5 other tailed beasts. The resulting brawl is so intense and fast-paced that it even leaves Guy comparing it to Destroy All Monsters. And this is before they pull out their Tailed-Beast Bombs.
- Neon Genesis Evangelion: The eponymous EVA mechs are used by NERV to fight angels, which resemble weird giant aliens with no uniform appearance. the only thing that qualifies them as "angel" is that they have a "blood pattern blue".
- One Piece: On Little Garden Island, there are 2 giants who have battled against each other for about a century. They've forgotten the cause for their battle, and now they just do it for fun.
- Pokémon: Several battles between legendary Pokémon: Groudon vs. Kyogre, Dialga vs. Palkia, etc.
- Tengen Toppa Gurren Lagann starts off as a typical battle between Humongous Mecha who over the series escalates into galaxy sized ones.
- Yu-Gi-Oh!: Several battles between Egyptian God Cards, between the God Cards and the Great Leviathan, and between Zorc and Exodia, the Blue-Eyes Ultimate Dragon, and Horakhty.
- The Darkstalkers series is usually about human-sized monsters fighting each other, but the Night Warriors OVA adaptation decides to kick things up a notch in the final battle against the Big Bad, where a giant-sized Huitzil robot appears specifically to fight Pyron. Normally the same size as the rest of the cast, Pyron in turn grows to the same size to do battle.
- The final episode of Taboo-Tattoo involved Touko and Izzy having fused together fighting Arya, who had fused with her sisters.
- Carta Marina:
- While Ziphius, a "terrible seamonster" (actually a swordfish), is swallowing a whole seal, it is itself attacked by an unnamed monster which is sinking its teeth into Ziphius' side.
- South of the island of Tile, a whale (balena) is being attacked by an orca.
- The climactic battle in Lanfeust is fought between giant energy clones of Lanfeust and Thanos over a major city.
- Kaijumax is an odd example: the series is about a prison for giant monsters, and it's told on their scale. They may not look giant to the reader, but they definitely are.
- One issue of the Buffy the Vampire Slayer Season Eight comics features a fight between Giant Dawn and Mecha-Dawn, while a delighted Xander watches.
- In the fanfic Catch Your Breath of the Naruto series, there have been several of those so far (and it's likely more will come).
- The Bridge: Considering half the roster have true forms over 80 meters tall, this is a given. Specific examples include-
- The opening fight, a full melee with almost every single member of the Terran Defender, Mutation, GDF, and Coalition factions slugging it out. Special focus on Godzilla Junior vs. Xenilla and Mothra, Anguirus, and Rodan vs. Destroyah. Result
- Anguirus with help from Rainbow Dash and Rodan vs. Gable's Greed Growth enhanced dragon gang Result
- Mothra Lea vs. Albino Hyper Gyaos note , several Super Gyaos, and a few dozen Gyaos Result
- Godzilla Junior with help from Princess Celestia and Luna vs. several hundred Super and normal Gyaos Result
- Irys, Gigan, and Megalon vs. Grand King Ghidorah Result
- Pre-Amnesia Monster X vs. Grand King Ghidorah in the past Result
- Monster X with assistance from Aria Blaze vs. Enjin Result
- With This Ring: Swamp Thing and Arcane in Binding 18.
- King Kong fights giant monsters in just about every installment
- King Kong (1933): King Kong (giant ape) fighting a Tyrannosaurus rex. This might be the Trope Codifier for modern giant monster fights in movies.
- King Kong (1976): King Kong fights giant snake.
- King Kong (2005): King Kong fights no less than three Vastatosaurus rex, a fictive descendant of the Tyrannosaurus rex.
- Kong: Kong: Skull Island has the biggest American King Kong yet, even dwarfing the Japanese version, who fights against giant reptilian monsters called "Skullcrawlers". He is also rumored to fight against Legendary Godzilla in a potential sequel.
- The Godzilla franchise gets an entire category for itself (in fact, there's only three Godzilla movies, not counting the 1998 remake, where he doesn't fight another monster):
- Godzilla Raids Again (1955) is against Anguirus (his first enemy, and later frequent ally)
- King Kong vs. Godzilla (1962): The entire point of the movie is to get King Kong to fight Godzilla. King Kong also fights a giant octopus before squaring off against Godzilla.
- Mothra vs. Godzilla (1964) has Godzilla fight three Mothras, the imago and two larvae.
- Ghidorah, the Three-Headed Monster (1964) sees Godzilla fight Rodan until the focus switches to the title monster. Mothra also participates.
- Invasion of Astro-Monster (1965) has Godzilla and Rodan battle Ghidorah again.
- Ebirah, Horror of the Deep (1966) pits Godzilla against...well, you know. Oh, and giant condor.
- Son of Godzilla (1967) sees Kamacuras and Kumonga go against Godzilla.
- Destroy All Monsters (1968) features a climactic battle between Ghidorah and Godzilla with all the denizens of Monster Island on Godzilla's side.
- All Monsters Attack (1969) has Gabara as Godzilla's opponent.
- Godzilla vs. Hedorah (1971) pits Godzilla against the tile Muck Monster.
- Godzilla vs. Gigan (1972) sees Godzilla and Anguirus battle Ghidorah alongside the title opponent.
- Godzilla vs. Megalon (1973): Godzilla teams up with Jet Jaguar to battle Megalon and Gigan.
- Godzilla vs. Mechagodzilla (1974) also features King Caesar in the mix.
- Terror of Mechagodzilla (1975) actually primarily sees Godzilla fighting Titanosaurus, though Mechagodzilla returns in the climax.
- Godzilla vs. Biollante (1989) pits Godzilla against Biollante's rose form in a lake, and then her absolutely gigantic second form outside a city.
- Godzilla vs. King Ghidorah (1991). The two title monsters first battle in Hokkaido, one which ends with Godzilla blasting off King Ghidorah's middle head. Then King Ghidorah is revived as a cyborg.
- Godzilla and Mothra: The Battle for Earth (1992) also stars Battra as Godzilla's opponent.
- Godzilla vs. Mechagodzilla II (1993) where he also battles Rodan.
- Godzilla vs. SpaceGodzilla (1994) is a three-way battle between Godzilla, Spacegodzilla, and Mogeura.
- Godzilla vs. Destoroyah (1995). Made even more titanic by the fact that Godzilla is going through nuclear meltdown and grieving the death of Godzilla Jr. at the same time
- Godzilla 2000 (1999) has Godzilla fight Orga.
- Godzilla vs. Megaguirus (2000) pits Godzilla against a huge prehistoric dragonfly.
- Godzilla, Mothra, King Ghidorah: Giant Monsters All-Out Attack! (2001) also sees Baragon appear as one of Godzilla's enemies.
- Godzilla Against Mechagodzilla (2002) is pretty self-explanatory, except that this Mechagodzilla is constructed from the bones of the original 1954 Godzilla.
- Godzilla Tokyo SOS (2003) has Mechagodzilla and Mothra fight Godzilla.
- Godzilla Final Wars (2004) features almost every monster from the previous films as well as a Curb-Stomp Battle against the '98 Godzilla.
- Godzilla (2014) introduces the Mutos to Godzilla's Rogues Gallery.
- Many of Ray Harryhausen's films featured monster battles:
- 20 Million Miles to Earth (1957): Ymir (giant alien)/elephant battle.
- The 7th Voyage of Sinbad (1958) - Cyclops/dragon battle.
- One Million Years B.C. (1966) - Ceratosaurus/Triceratops battle.
- The Valley of Gwangi (1969) - Allosaurus/Styracosaurus battle.
- The Golden Voyage of Sinbad (1974) - Griffin/centaur battle.
- Sinbad and the Eye of the Tiger (1977) - Troglodyte/sabertooth tiger battle.
- War of the Gargantuas (1966). The brown gargantua is a good guy who likes and protects humans. The green gargantua is violent, savage and eats people. They are brothers who were raised separately.
- All the Gamera movies with the exception of the first movie.
- Gamera Vs Barugon (1966): Gamera battles a crocodile-chameleon monster that breathes freezing mist from its tongue and shoots a rainbow beam from its back.
- Gamera Vs Gyaos (1967): Gamera battles a giant vampire bat-pterodactyl monster.
- Gamera Vs Viras (1968): The titantic terrapin saves children from the clutches of a giant squid-like alien.
- Gamera Vs Guiron (1969): Gamera goes up against a knife-headed monster. Also sees Guiron chopping a Space Gyaos into pieces.
- Gamera Vs Jiger (1970): A triceratops-like monster battles Gamera in this one.
- Gamera Vs Zigra (1971): An evil shark alien wants to turn the human race into sushi, so naturally it's up to the Friend to All Children to save the world.
- Gamera: Guardian of the Universe (1995): Gamera battles Gyaos again.
- Gamera 2: Advent of Legion (1996): Gamera goes up against giant insectoid aliens.
- Gamera 3: Awakening of Irys (1999): The Guardian of the Universe battles not only the enigmatic title monster, but a gigantic flock of Gyaos.
- Gamera The Brave (2006): Gamera's son fights a sea monster named Zedus after the original one performs a Heroic Sacrifice fending off Gyaos.
- Jurassic Park:
- The Asylum created an entire film series featuring giant Sea Monster battles, including Mega Shark vs. Giant Octopus (2009) and its sequel Mega Shark vs Crocosaurus (2010)
- Pacific Rim (2013): Giant extra-dimensional monsters fight giant robots.
- Parodied in Crank: High Voltage. There is a fight between Chev Chelios and Johnny Vang that suddenly turns into a King Kong vs. Godzilla battle. Most of it is a hallucination, though.
- The Last Dinosaur: (1977): Tyrannosaurus Rex vs. Triceratops.
- The Magic Serpent features a final battle in which two enemies become kaiju and fight to the death.
- ''The climactic battle from Final Fantasy 15: Kingsglaive (2016) features gigantic statues coming to life and battling it out with monsters just as enormous (called "Demons"), in the middle of a city, all of that while the protagonist and the villain fight on top of the larger combatants, jumping from one of them to another. It's about about as epic as it gets.
- In Ragnarök, the first sequel to Valhalla, an internet sequence features a fight between a colossal crab with a mountain for a shell and a gargantuan arctic fox. The battle wrecks half the Nikkei site, throwing the world into economic turmoil for the rest of the book.
- In The Voyage of St. Brendan, St. Brendan the Navigator and his crew are pursued by a giant fish that wants to swallow them. Upon their prayers, another nondescript "great monster" appears that fights the first monster and kills it. A few chapters later, under very similar circumstances, the voyagers witness a battle between a gryphon and another giant bird.
- In the finale of The Brothers Lionheart, Jonathan vanquishes the dragon Katla by rolling a boulder on her that pushes her into a waterfall. Karm, the 'lindworm' that inhabits the waterfall attacks Katla, and Jonathan and Skorpan watch in awe as the two monsters fight each other to death.
- The Barsoom Project features two examples: the War-Bots simulator scenario in which two opposing diplomats face off in control of Humongous Mecha, and the finale of the Fimbulwinter Game, in which the Big Bad in the form of a Terichik battles the Inuit hunter-god Torngarsoak.
Live Action TV
- Serves as the climax of nearly every Super Sentai episode starting with Battle Fever J (and by extension, every Power Rangers episode), where the Monster of the Week pulls a Make My Monster Grow and the heroes counter by summoning their Humongous Mecha. However, the concept for a climatic battle between giant opponents originated from Toei's Spider-Man live action series.
- The Ultraman franchise was built off the idea of bringing this trope to the small screen. The climax of about 99% of all episodes is a battle between Ultraman and the Monster of the Week. Occasionally, the monsters battle each other too.
- In the mockumentary TV film Dragons: A Fantasy Made Real, there is a fight between a Tyrannosaurus rex and a Prehistoric Dragon and his mother.
- BattleTech (1984): Tactical wargame centered on giant piloted robots (or mechs). Had a focus on team tactics, ie groups of mechs fighting each other. Spawned the BattleTech Expanded Universe franchise.
- In the Greyhawk setting module WG7, Castle Greyhawk, a battle between an Apparatus of Kwalish and an iron golem piloted by an orc takes place on level 5. It's an Affectionate Parody of FASA's BattleTech game (the orc is even named "Fahzah").
- King of Tokyo is all about kaiju battling each other.
- Monsterpocalypse has this as its main premises, with every kaiju stereotype duking it out with one another. From giant monsters, aliens, and Eldritch Abomination's.
- Warhammer 40,000 which has has several faction who have massive mechs called Titans. Tyranids possess kaiju sized bio-titans, and Necrons have a couple of bad-tempered flying pyramids, one of them serving as the cage for the furious shard of an Eldritch Abomination.
- Mecha vs. Kaiju: See if you can guess what the two main classes of Behemoth are. Occasionally you get inter-kaiju battles, most notably with the King Ghidorah Expy, who's proven largely bulletproof but is defeatable by other kaiju, which hate it passionately for no particularly clear reason.
- BIONICLE: In the final battle between Mata Nui and Makuta Teridax, both of them are inhabiting enormous, multi-million-foot-tall robots.
- While the Transformers are fairly huge, the battles that fit the trope even for a Cybertronian's relative size are those between Combiners and those between the Metrotitans of each faction such as the Autobot Metroplex and the Decepticon Trypticon.
- In Fallout 4, you may come across with Behemoth, a type of gigantic Super Mutant. You can shove a Big Boy MIRV onto it, chip him bit by bit with Minigun, or better yet: ask Strong, our resident Super Mutant companion to duke it out with those Behemoths. If you happen to find a Deathclaw, you can pacify them and bring them to the Behemoths. And if that wasn't huge enough: how about pacifying a Mirelurk Queen to deal with a Behemoth?
- If you choose to help out the Brotherhood of Steel in the finale, you get a Super Mutant Behemoth versus the Liberty Prime Mk.II. The "fight" lasts about four seconds.
- MechWarrior (1989) are about giant mechs with human pilots battling it out, based on the BattleTech game. Received several sequels
- War of the Monsters (2003) is a Fighting Game where you can play as different kinds of Kaiju.
- In Metal Gear Solid 4: Guns of the Patriots (2008), there is an epic battle between the original Metal Gear Rex from the first Metal Gear Solid game, and a Metal Gear Ray unit.
- On one memorable location on Gran Pulse in Final Fantasy XIII (2009), you encounter a behemoth (a huge and nasty monster type) and a giant dog-like monster fighting each other. The two of them block the passage to your destination but are so consumed by their fight that you can sneak past them with a bit of luck. If they do spot you, it results in a Mêlée à Trois where you can play one of them against the other to make it slightly easier.
- God of War III (2010) opens up with battle between the Titan Gaia and Poseidon's One-Winged Angel form.
- The opening cutscene of Xenoblade (2010) features a titanic clash between the the god-like entities Mechonis and Bionis. They are so big that after said battle their still standing corpses form the entire world in which the normal sized characters live on.
- The Wonderful 101 (2013) has battles between Humongous Mecha and even bigger Humongous Mecha.
- Colossal Kaiju Combat: it's right there in the title.
- The final boss of Copy Kitty is either a mech in the size of a fortress, or an enormous Spider Tank. Depending on which character you use, once you beat your respective giant robots, you get to ride it and destroy the other.
- One of the levels in Super Smash Bros. Melee has a giant Bowser fighting an equally giant Donkey Kong on skyscrapers, as an homage to King Kong vs. Godzilla.
- Mass Effect 3: Epic battle in one cutscene features a giant thresher maw Kalros against Reaper Destroyer.
- Girl Genius: The fight (2012) between Franz Scortchmaw, the Bone Gnawer of the Heterodynes, and "Pretty Boy" (no name given, despite his gentledragonly manners). Rather low on the collateral damage for a monster fight, though.
- One of Terry Gilliam's Monty Python animations was about an invasion of killer cars that were defeated by atomically-mutated giant cats. Unfortunately the cats then ate the city.
- "Anthology of Interest I": A giant Bender is attacking the city, so Professor Farnsworth enlarges Zoidberg to fight it.
Hermes: We're jerked! Nothing can stop a monster that big!Prof. Farnsworth: Nothing except an even more equally big monster!
- "Benderama": Bender combines with his nanoreplicants to form one giant Bender to fight an alien giant.
- "Anthology of Interest I": A giant Bender is attacking the city, so Professor Farnsworth enlarges Zoidberg to fight it.
- Godzilla: The Series: Godzilla versus Monster of the Week.
- Lampshaded in the Phineas and Ferb episode Doof Dynasty. The medieval Chinese versions of the protagonists pilot a giant terracotta warrior into battle against Doofus Kahn's mecha dragon. Monobrow sees the fight and remarks: "Man they would love this in Japan."
- In the Pinky and the Brain episode "Tokyo Grows", Brain attempts to take over Tokyo by disguising Pinky as the giant monster Gollyzilla, turning him into a giant with a reversed Shrink Ray, and then turning himself giant too and saving the city by fighting Pinky. Hilarity Ensues when the real Gollyzilla shows up and Brain fights him instead of Pinky.
- Steven Universe has gem fusions. Those fusions are massive, ranging from "has to duck to fit through a door" to "the size of a building". Pit the two biggest ones against eachother, and you get the Behemoth Battle that is Alexandrite versus Malachite, a fight that takes up nearly an entire episode, only interrupted by a watermelon riot.
- Most massive real world predators actually tend to avoid each other, or when there is a chance encounter prefer to use threat displays rather than simply duke it out, the obvious reason that it's too risky for both parties. There are a few notable exceptions though, such as the battles to the death that occur when sperm whales prey on giant squid. Many whales carry the scars of these titanic fights.
- Even more interesting than the Sperm Whale/Giant Squid conflict would perhaps be the prehistoric encounters between Carcharodon megalodon and Livyatan melvillei (the former a giant shark, the latter an older version of a sperm whale with bigger teeth). There's little evidence they actually did battle with each other, but the fact that they were the two largest predators of their time and place and that they were roughly the same size would make for a very intriguing (while improbable) scenario.