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[[quoteright:345:http://static.tvtropes.org/pmwiki/pub/images/grease_fire_3269.jpg]]
[[caption-width-right:345:Grease fire + water = BIG problem.]]
->'''[[LargeHam Pyrrhon]]:''' Try my [[KillItWithFire pyroweaponry]] on for size!\\
[=*boss=] TurnsRed*\\
'''Pyrrhon:''' That's... odd.\\
'''[[MissionControl Palutena]]:''' Apparently adding heat to heat only makes things hotter.
-->-- ''VideoGame/KidIcarusUprising''

The MonsterOfTheWeek is apparently ImmuneToBullets, but not only that, it's getting stronger too! Maybe you shot it with an Energy Weapon, maybe you intervened in a situation and [[ReedRichardsIsUseless caused a worse problem to appear]] or maybe you just hit its BerserkButton, but it didn't die, and now it's stronger than ever. FeedItWithFire is the process by which attempting to [[KillItWithFire kill or destroy]] something ends up making it grow, [[AdaptiveAbility become more powerful]], or otherwise [[InfernalRetaliation help it out.]]

FeedItWithFire occurs most often as a form of EnergyAbsorption, although EnergyAbsorption is one specific type of FeedItWithFire. If punching a man makes him get stronger, or attempting to stamp out a religion gives it martyrs and helps it spread, that's a case of FeedItWithFire. If shooting a laser at the enemy makes it grow stronger, then it's both. If you're using lightning to animate a dead body, that's just EnergyAbsorption.

See Also:
* AdaptiveAbility
* BerserkButton
* TurnsRed (in which videogame enemies simultaneously become weaker and stronger from attacks.)
* ElementalAbsorption
* EnergyAbsorption
* NiceJobFixingItVillain

Compare HealItWithFire, InfernalRetaliation. Contrast KillItWithFire, FeedItABomb, ReviveKillsZombie.

A form of AttackBackfire.

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!!Examples:

[[foldercontrol]]

[[folder: Anime and Manga ]]

* In ''Anime/DragonBallZ''
** Android 19 absorbs Ki blasts to increase its power through its hands. Vegeta killed it after popping its arms off.
** Cooler, from one NonSerialMovie, tried to kill Goku and Vegeta by absorbing their ki, but they destroyed him instead by overloading his circuits.
** In the series proper, Goku also kills a minor minion in the Buu saga this way.
** Also, each time a part-Saiyan heals from a near-mortal wound, they come back significantly stronger. Vegeta dangerously, deliberately uses this to his advantage, in addition to the incidental uses by most of the other part- or full-Saiyans. Turns out that teaming up a guy who gets dramatically stronger after recovering from injury with a guy whose power is to heal other people's injuries works pretty well.
* In ''Manga/FairyTail'', all of the Dragon Slayers can eat their element (so long as they didn't make it [[spoiler:and it wasn't created by Godslayer magic]]) to heal themselves and boost their attacking power, resulting in a literal example of this trope's name, as the main male lead ''eats fire''.
* ''Anime/KirbyOfTheStars'' had a MonsterOfTheWeek called [[ExactlyWhatItSaysOnTheTin Flame Feeder]]. As Dedede said when Kirby tried to torch it, "[[DepartmentOfRedundancyDepartment Ha ha! Flame Feeder feeds on fire]]!"
* Subverted in ''Manga/YuYuHakusho'', where the demon Byako gets stronger by absorbing the energy from Kuwabara's aura sword, until he takes in too much, causing him to get indigestion.
* In ''Manga/JoJosBizarreAdventure'', Von Stroheim, Nazi cyborg and also '''one of the good guys''' (yes, really), attacked a very weakened Kars with his ultraviolet rays, to finish him off. But Kars had sneakily managed to wear a certain mask and a certain stone, so basically the rays that should have killed him, turned him into a god instead. NiceJobBreakingItHero...
* One of the angels in ''Anime/NeonGenesisEvangelion'' would evolve to meet any new threat. NERV starts pumping ozone into the tank holding the angel, as it was being harmed by ozone at that point. The angel then evolves to become ozone tolerant, starts consuming it with gusto, and spreads once more.
* In ''Anime/KillLaKill'', Gamagoori's Shackle Regalia uniform allows him to [[CombatSadomasochist get stronger when struck]]. If his opponent decides not to attack, he'll simply whip himself to get the strength he needs.

[[/folder]]

[[folder: Comic Books ]]

* Sebastian Shaw of the Hellfire Club in ''Comicbook/{{X-Men}}'' has powers that work like this. He absorbs the energy from attacks, so punching him makes him stronger.
* In ''Superman/Wonder Woman #2'' Apollo hits Superman with a blast of concentrated sunlight. Superman asks him "You don't know much about me, do you?" before punching him straight back to Olympus.
** It came back with a vengeance when Apollo [[spoiler:intentionally powered up Zod and Faroa]].
* A similar thing happened when Superman was attacked by Evil Star. His star blasts strengthened Superman, as the sun is a star.

[[/folder]]

[[folder: Film ]]

* In the film ''Film/{{Evolution}}'', the trope title plays out literally when fire induces rapid growth in the alien invaders.
* The Ultimate Evil from ''Film/TheFifthElement'' is basically the ultimate example of this trope. '''Any''' hostile action '''at all''' directed at it will cause it to grow stronger, as it feeds off of negative feeling.
* Literally true with Franchise/{{Gamera}}. In one movie, he is healed by crashing into an oil refinery and absorbing the resulting explosion.
* In Film/TheAvengers, Thor uses a lightning blast on IronMan. Iron Man's PowerLevel simply goes up. (Neither was a fan of ExplainingYourPowerToTheEnemy.)
* ''Film/{{Kronos}}'', an alien energy accumulator, wandered about Mexico and California absorbing energy from power plants and growing just a bit larger each time, so the Powers That Be decided to drop a nuclear bomb on it. This did not work as planned.
* [[Film/GodzillaVsMechagodzillaII Mechagodzilla II]] has an artificial diamond armor that channels the energy weapons of kaiju into its strongest weapon, the Plasma Grenade, which hits with devastating force. Neither Godzilla nor Fire Rodan could harm the mecha with their breath weapons, and Fire Rodan was mortally wounded by a point-blank Plasma Grenade shot.

[[/folder]]

[[folder: Folklore and Mythology ]]

* The hydra, of GreekMythology, would grow two heads in place of each one you cut off unless, ironically, you [[KillItWithFire cauterized the stump]].

[[/folder]]

[[folder: Literature ]]

* Fred and George Weasley of ''Literature/HarryPotter'' designed their fireworks in ''[[Literature/HarryPotterAndTheOrderOfThePhoenix Order of the Phoenix]]'' to be like this.
* In the book ''Pyramid Scheme'', [[spoiler: the aliens wanted to provoke the humans into nuking their device so it could absorb the energy and become unstoppable.]]
* In ''Literature/TheAndromedaStrain'', the scientists at the containment facility figure that if whatever they're studying gets out of control, they'll nuke it. Bad idea - the strain has mutated to the point where it can feed on nuclear radiation.
* In the novel ''Meg'', blinding the nocturnal giant shark made it deadlier, as its other senses compensated for its blindness and now it could hunt during the day.
* A human example happens in ''Literature/TheHeroesOfOlympus'' where Annabeth and Percy [[spoiler: drink from the River Phlegethon, a river of literal fire, to resist the poison of Tartarus.]]
* In Pratchett's FeetOfClay, the Watch figure out that it's possible to heal a golem with spare clay and a stint inside a kiln.

[[/folder]]

[[folder: Live-Action TV ]]

* Played straight many times in ''Series/StargateSG1''.
** An alien time-capsule like thing absorbs staff blasts to help it grow
** An Ori shield generator type thing absorbs the orbital fire directed towards it and uses it to expand.
** Intervening in the internal politics of the Goa'uld System Lords has frequently backfired, causing a consolidation of power where before there were fragments and internal fighting.
** Inverted in the season 10 finale, when the heroes absorb enemy fire to power a time machine. (In case it's not clear, the inversion is that the ''main characters'' use this, instead of having it happen to the MonsterOfTheWeek.)
* Adam from ''Series/BuffyTheVampireSlayer'' was able to absorb energy from the [[FamilyFriendlyFirearms electricity guns]] that the Initiative used. It only really came up once though, presumably to prove that GunsAreUseless.
* Another inversion where it applies to the main character is Series/KamenRiderFourze, where its Fire States powers up from being exposed to one of the MonsterOfTheWeek's flames.

[[/folder]]

[[folder: Newspaper Comics ]]

* CalvinAndHobbes first attack the living snowman with snowballs. They simply stick to the monster, inspiring it to add more snow and features, quickly becoming the first of the Deranged Mutant Killer Monster Snow Goons.

[[/folder]]

[[folder: Tabletop Games ]]

* ''TabletopGame/FengShui'' has this as a Creature Power called "Conditional Escalation," which temporarily gains you a point in one of your stats each time a particular condition is meant (getting hit with a gun, a fu power, a successful spell, taking a certain amount of damage, causing a certain amount of damage, etc.)
* Some ''MagicTheGathering'' cards get more powerful in this manner, such as the old Fungusaur, which got permanently slightly bigger every time it survived damage and the Phytohydra from Ravnica which transforms damage directly power.
** This can sometimes apply to players as well. [[http://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=29513 Hallow]] and [[http://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=140214 Purity]] can convert damage spells directly into health. Coincidentally, an awful lot of damage spells are fire-based.
* ''WarhammerFantasy''
** The dragon ogres gain much of their power (and immortality) from lightning. Casting lightning bolt on them is a bad idea.
** One dragon ogre character has the special rule "Lightning Rod". Any lightning-based attack used within a certain radius will automatically redirect to him, and it grants him power just the same as his weaker relatives.
* Very common in games of ''TheAwfulGreenThingsFromOuterSpace'' until the crew work out what weapons will kill the things and which will make them grow larger.
* ''TabletopGame/DungeonsAndDragons''. Some monsters benefit from certain attack modes.
** Electricity and lightning cause Shambling Mounds to increase in size and HitPoints.
** Hitting an iron golem with magical fire restores lost HitPoints.
*** Many golems, particularly those with the "immunity to magic" trait, behave in a similar manner, like clay golems absorbing acid and flesh golems absorbing electricity.
** Cutting off one of a Lernean hydra's heads causes two to grow in its place, increasing its HitPoints and number of attacks.
** And in one of the more literal applications of this trope, trying to burn brown mold causes it to grow explosively.

[[/folder]]

[[folder: Video Games ]]

* In ''Franchise/{{Pokemon}}''
** The move "Bide" increases its attack power with every point of damage taken during the time your Pokémon "bides its time," and "Rage" starts out as a weak move, but each hit your Pokémon takes pumps its Attack stat as long as it keeps using the move.
** There are also some Pokémon abilities[[note]]Water Absorb, Volt Absorb, Flash Fire, Motor Drive, Lightningrod, Storm Drain, Justified, Sap Sipper, and Dry Skin[[/note]] that heal a Pokemon's health or raise a stat when the Pokémon is hit by a certain type of attack, instead of[[note]]with the exception of Justified[[/note]] damaging them.
* In ''VideoGame/{{Crysis}}'', [[spoiler:the alien ice field absorbs a nuclear weapon's blast to grow.]]
* Adult Sheegoths in ''MetroidPrime'' absorb most energy weapons into the ice crystals on their backs, and Elite Pirates can do the same with a handheld energy absorber; both are used to power their ranged attacks.
* In the ''Franchise/ShinMegamiTensei'' games (and many other rpgs, even Pokemon has the Absorb traits), some monsters Absorb certain elements, healing them instead of dealing damage. This means an enemy with fire absorb will literally feed on fire.
** In ''VideoGame/DevilSurvivor'' a monster called Kudlak will arise stronger everytime it's killed, unless done so in a special way. It tries to goad the party into killing it.
* In ''VideoGame/{{Disgaea 2|CursedMemories}}'', Dragons, Aqua Demons, and Mystic Beasts are innately immune to fire, ice, and wind respectively, but if they're donning equipment with a Lover on it, they absorb a percentage of the damage they would've taken as HP instead.
** There's also the Holy Dragon, who can absorb non-elemental special attacks, which is much more useful (Or annoying) then the abilities possessed by the previously mentioned monsters, due to how prevalent such attacks are.
** Considering how ridiculously over the top some of the stronger attacks are, it can be quite comical to see these monsters get healed by things like disintegration, [[EarthShatteringKaboom world ending explosions]], or being sliced in half.
* In ''TheStoryOfThor'' for [=SegaMegaDrive=], there's an enemy that takes the form of a string of flames moving around the area. Predictably, attacking it with fire-based attacks restores its health.
* In ''VideoGame/FinalFantasyIX'' the villain Kuja has just figured out that he can use the game's LimitBreak system in order to make himself nigh-unstoppable, after absorbing a whole bunch of souls. All he needs is a lot of aggressive energy to trigger the [[OneWingedAngel transformation]]. So naturally he [[BatmanGambit walks right up to the heroes and starts a boss fight.]]
* ''VideoGame/MegaMan2'':
** Using Bubble Lead on Bubble Man will fully heal him.
** Using Crash Bombs on Heat Man will fully heal him.
** Using ''any'' weapon other than [[spoiler: Bubble Lead]] on the final boss will fully heal it.
* In ''VideoGame/MegaMan7''. Using Freeze Cracker on Freeze Man will heal him by 4 units, he'll also look at the player as if to mock them.
* In ''VideoGame/MegaManAndBass''. Using Ice Wall on Cold Man will heal him by 4 units.
* In RomHack ''VideoGame/Rockman4MinusInfinity'' has Dust Man. When he is SuckingInLines, anything fired at him except [[BalefulPolymorph Toad Spell]] heals him instead.
* In ''VideoGame/GodzillaSaveTheEarth'', Megalon would be healed if he was struck by electric attacks, rendering King Ghidorah, Mecha-King Ghidorah, and opponent Megalons' ranged weapons useless. Mecha-King Ghidorah was weak to all ranged weapons, but if he has his energy shield up when the beam first strikes he restores some health instead and the rest of the beam is rendered completely ineffective.
* The "Absorbs Element" trait in any number of ''Franchise/FinalFantasy'' games.

[[/folder]]

[[folder: Web Animation ]]

* In ''WebAnimation/{{RWBY}}'', one of Yang Xiao Long's powers is that her strength, speed, etc increase each time she is struck. The more powerful the blow, the more powerful she becomes. However, she can still feel pain and get injured, so she isn't invincible.

[[/folder]]

[[folder: Western Animation ]]

* In ''SpaceGhostCoastToCoast'', the replicator pods on Ghost Planet are found to grow when hit with Space Ghost's destructo ray. This being Space Ghost, it takes him awhile to stop shooting his ray even after he realizes that it's making it grow. Eventually, he uses this to make the one next to Zorak gigantic.
* In the {{Kaiju}} parody episode of ''WesternAnimation/DextersLaboratory'', Mandark's MASER Tank only makes the monster grow larger and more powerful.
* ''GodzillaTheSeries'' had a MonsterOfTheWeek aptly named the Fire Monster in the aptly titled "Ring of Fire" episode that got stronger whenever Godzilla used his atomic breath on it. H.E.A.T. had to resort to using nitroglycerin to knock it out since it doesn't create flames when detonated.
* ''WesternAnimation/{{Futurama}}'', when the plan to overload the energy being Melllvar's electro-quantum structure (described as being "like putting too much air in a balloon") doesn't work:
-->'''Leela''': It's not working! He's gaining strength from our weapons!
-->'''Fry''': Like a balloon, and... [[{{Metaphorgotten}} something bad happens!]]
* One of the villains of ''CaptainPlanet'' was once tricked into using a lightning attack on Captain Planet himself... Apparently striking someone, created by the spirit of the earth who is more or less a force of nature himself, with lightning will ''empower'' him. A similar thing happened when a weakened Captain Planet was set on fire. He emerged from the flames fully healed.
* In the ''WesternAnimation/EarthwormJim'' cartoon episode "Hyper Psy Crow" the titular supervillain, powered by coffee, is theorised to be destroyable by "overloading him with coffee until he explodes in a fantastic explosion of nervous energy!". Instead, he becomes even more powerful as Hyper Hyper Psy Crow.
-->'''Jim''': You idiot! You fight fire with WATER!
* Gigabyte and the Web Virus from ''WesternAnimation/{{Reboot}}''. Viruses with the ability are referred to by Bob as "Class-5".

[[/folder]]

[[folder: Real Life ]]

* Attempting to persecute Religions often makes SelfFulfillingProphecies come true, and gives the religion Martyrs, helping them to grow in number and influence.
* In biology, this trope occurs when an infection is partly eradicated by an antibiotic, but not completely, giving the thing time to adapt and thus making it immune to this antibiotic in the future, and thus creating even worse strains.
* Water-based fire extinguishers are the absolute last thing you want to used on electrical fires, grease fires, or a potassium fire (or any other combustible metal).

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