[[quoteright:350:[[Comicbook/IncredibleHulk http://static.tvtropes.org/pmwiki/pub/images/1084894-440px_hulk_13_super.jpg]]]]

->'''Ayano''': Is he having some sort of allergic reaction?
->'''Kazuma''': I don't know but I'd be worried if my body did that, seems like you would go through a lot of pants that way.
-->-- The reaction to seeing someone Hulk Out in ''LightNovel/KazeNoStigma''

What happens at the intersection of YouWouldntLikeMeWhenImAngry, {{Shapeshifting}} (often of the {{involuntary|Shapeshifter}} kind) and UnstoppableRage. Generally the trope goes like this:

# [[YouWouldntLikeMeWhenImAngry Character X is angered or in pain]] or some [[InvoluntaryShapeshifter specific trigger is invoked]].
# X reaches the breaking point and {{transform|ation sequence}}s [[OneWingedAngel into something at least twice his normal size]]. Skin color usually changes as well.
# [[TheBerserker Stuff gets broken]] until there's nothing else to break or [[CooldownHug X gets talked down from his rage.]]
# Cue change back to X's normal state -- unless MagicPants are involved. This might result in MonsterModesty.

If the subject is female, there's a good chance that they'll become an AmazonianBeauty and/or a StatuesqueStunner.

For some reason, [[OurWerewolvesAreDifferent werewolves in modern fiction]] are often subject to this type of transformation, rather than (just) the full moon. Can involve a SuperpoweredEvilSide or a JekyllAndHyde scenario. {{Berserk Button}}s are often involved as well. May result in a HeroicRROD. Compare TheBerserker for cases where the transformation is purely psychological.

See also OneWingedAngel, LimitBreak, SuperMode, TurnsRed, GrowingMusclesSequence.



[[folder: Anime & Manga ]]
* In ''Manga/{{Attack on Titan}}'', the [[HumanWeapon Shifters]] unleash their Titan form by using bodily harm as a catalyst for their [[YouWouldntLikeMeWhenImAngry intense emotion/willpower]][[https://www.youtube.com/watch?v=GLff3_jPZIM]].
** Each transformation involves lightning falling from the sky and and bomb shockwave.
* In ''Manga/{{Dragonball}}'', Goku was subject to transforming into a giant ape-like creature with [[FrickinLaserBeams laser breath]] when gazing at a full moon. In ''Anime/DragonBallZ'', Goku's son, Gohan had the same "issues". Cutting off their Saiyan tails reversed the transformation. Vegeta, having had the proper training, was in full control of his Oozaru form.
** Going [[SuperMode Super Saiyan]] is even closer to the trope; most Saiyans' first transformations come when they get [[UnstoppableRage really, really angry]], and they really do get stronger the angrier they get. And when they [[TranquilFury combine anger with purpose]]... [[OverNineThousand you're boned.]]
** Broly is probably the best example of this in the series. His transformation into the Legendary Super Saiyan literally has his ''skin exploding''.
** Gohan as a Super Saiyan 2 in the Cell Saga is this as his rage makes him one of the most sadistic characters in the anime besides from Broly and Kid Buu. Even Cell refers to him as a monster. Gohan is also very muscular for a 12 year old.
** ''Anime/DragonBallSuper'' has Kale, a ShrinkingViolet Saiyan who goes from a normal-looking young girl to [[spoiler:the female version of [[TheJuggernaut Broly]]]].
* {{Mon}} example from ''Anime/DigimonTamers'': when [[spoiler:Beelzemon kills Leomon]], Takato becomes so furious it causes Guilmon to evolve into the highly unstable and uncontrollable Megidramon.
** Earlier in ''Anime/DigimonAdventure'' Tai became obsessed with getting Agumon to digivolve to the ultimate level. The end result was [=SkullGreymon.=]
* Negi's Magia Erebea form in ''Manga/MahouSenseiNegima''
* Manga/{{Naruto}}'s SuperpoweredEvilSide tends to come out when he's angry.
* This happens to [[TheBrute Yammy Llargo]] in ''Manga/{{Bleach}}'', only he Hulks Out when he was already the size of a football stadium.
* In ''Manga/DesertPunk'', desert gang leader Makoto has what's described as a case of [[LampshadeHanging "Hulk Syndrome."]] Insult his mother, and he grows huge muscles, goes berserk, and destroys anyone who crosses him. And that's after taking a long string of taunts without batting an eye.
** It's not just ''ANY'' insult to his mother that causes this either. No. You gotta say she has a '''fat belly button''' for him to really get angry.
*** Only in the original version. In the English dub, calling his mother a [[RefugeInAudacity dirty whore]] works too.
* In chapter 305 of ''Manga/HunterXHunter'', [[spoiler:KidHero Gon]] Hulks Out when Pitou admits that [[spoiler:Kite is already dead and beyond any help]]. [[spoiler:He turns into a muscular long-haired adult whose raw power rivals that of the ''Chimera Ant King'']]. Overlaps with DangerousForbiddenTechnique since [[spoiler:Gon accomplished this by forcefully aging himself; reducing his lifespan and (maybe) sacrificing the ability to use nen ever again]].
* A rare female example of hulking out occurs in ''Anime/AngelCop,'' where the psychic Lucifer enlarges her muscles, going from silky-smooth to rippling in an instant.
* Never get Stella from ''Manga/ArakawaUnderTheBridge'' in her bad mood, especially talking ill about [[WholesomeCrossdresser Sister]], you will regret it.
* Kenshiro from ''Manga/FistOfTheNorthStar'' is a minor version- [[http://www.youtube.com/watch?v=3ebC8EVe1JQ pretty much every fight scene starts with him rip his jacket to shreds by tripling the size of his muscles]] (they're back by the next scene). Several mooks use their special abilities to increase in size, [[MusclesAreMeaningless not that it helps any.]]
* ''Manga/RosarioToVampire'': Though the exact transformation varies, monstrels' bodies change in battle. and a few of them become huge. Importance to the team tends to have something to do with it; weaker monstrels experience ShapeshifterWeapon, whereas the big boss instead goes OneWingedAngel.
* ''Manga/FairyTail'': [[http://static1.wikia.nocookie.net/__cb20120411143502/fairytail/images/0/0c/Power_Perfume.gif such]] is the effect of the Power Perfume in Ichiya's arsenal. MagicPants [[http://static3.wikia.nocookie.net/__cb20120411143546/fairytail/images/7/78/Power-Perfume-Effect.gif are included,]] of course.
* In {{Manga/Green Worldz}}, the female human hybrid does this by having wood branches surround her body when she starts getting a little serious.
* Parodied with a RunningGag in ''Manga/TokyoGhoul[=:Re=]''. The so-called "[[FanNickname Hulk Urie]]" is a fictional version of Urie, drawn by [[{{Otaku}} Saiko]] to mock his strict workout regimen. She even draws a comic where the normal Urie transforms into Hulk Urie to rescue the team. He is... less than amused with her creative presents.

[[folder: Comics ]]
* Naturally, the {{Trope Namer|s}} and [[TropeCodifier Codifier]] is the Comicbook/IncredibleHulk.
** The writers of ''Series/TheIncredibleHulk'' Live Action TV series officially called it "Hulking Out."
* ''Comicbook/SonicTheComic'' has Sonic transform into Super Sonic when angered or stressed. While Super Sonic was the same size as Sonic, he fits the rest of the description.
* One infamous moment in ''ComicBook/ArchieComicsSonicTheHedgehog'' had a multiverse of Tails team up and fuse to become Titan Tails, which was a gigantic, beefed-up Tails, to battle Master Mogul.
* Loose Cannon, a CaptainErsatz of the Comicbook/IncredibleHulk in Franchise/TheDCU.
* In ''Comicbook/WildCATS'', the team's GeniusBruiser has the power to grow in size and strength at the cost of intelligence. If seriously provoked he sometimes forgets himself and grows past the point where he can tell friend from foe.
** This is also the case with Walter/Wallop from ''Comicbook/ClanDestine'', though he doesn't so much lose intelligence as control. The longer he stays transformed, the bigger, stronger and more out of control he gets.
* Marvel storylines ''WorldWarHulks'' and ''HulkedOutHeroes'' had several big name heroes Hulking Out after being exposed to an enemy superweapon to make them go on a rampage. SelfDemonstrating/{{Deadpool}}, several members of the Comicbook/XMen, all of the ComicBook/FantasticFour except Reed Richards, [[Comicbook/TheMightyThor Thor]] (who seems to be weaker in this form), Franchise/SpiderMan, and even Comicbook/DoctorStrange were all Hulk-ified. Naturally they all fell victim to TheWorfEffect -- and Hulk.
** Even Comicbook/SheHulk Hulked Out even more in ''Comicbook/AvengersDisassembled'': becoming larger, stronger and uglier as she went berserk over ComicBook/TheVision attempting to kill them. She's done that before... TWICE. Both instances occurred during her Sensational title. The first instance involved her in a pocket dimension, finding herself back to human form (despite being locked into her Hulk state at the time) and transforming into an enormous grey Incredible She-Hulk when night fell (incidentally, this was originally how Bruce Banner's change triggered as well), although the series of events that caused this to happen were [[StatusQuoIsGod subsequently undone]]. The second instance involved her ex-boyfriend bringing her back from the dead with gamma radiation, causing her to get bigger, uglier and a lot stronger.
* Subverted and {{lampshade|Hanging}}d in ''ComicBook/{{Invincible}}'' when Mark tries to hulk-out over [[spoiler:Atom Eve's death]] and will beat Conquest. Conquest rushes Mark and tells him "child, please. Being enraged at me does not make you stronger. That is not how this works." [[spoiler:Then again, Mark ''does'' nearly kill Conquest afterward, so...]]
* It's not easy to make a Hulk desperate. Push Red She-Hulk far enough, though - say by overwhelming her with an army of {{supersoldier}}s - and she Hulks Out again, turning into a rampaging creature running on pure survival instinct.
* In recent years, Franchise/{{Batman}} villain The Scarecrow has reacted to great rage or pain by involuntarily transforming into the hulking monster Scarebeast on some occasions. He does not seem to retain any memory of these interludes.
* In a story about the Franchise/JusticeLeagueOfAmerica told by J'onn J'onnz, the ComicBook/MartianManhunter himself went through a Hulking Out moment when the ComicBook/BlueBeetle and ComicBook/BoosterGold played a prank on him due to his addiction to [[TrademarkFavoriteFood Chocos cookies]], by hiding a stash of his favorite cookie away from him in a warehouse and having all the nearby stores that sell Chocos be completely empty of their stock.
* Roberta Mendez, first introduced as ComicBook/CaptainAmerica 2099 in Marvel's ''ComicBook/SecretWars2015'' event and later becoming a canon part of ''ComicBook/SpiderMan2099'', goes from a perfectly normal executive assistant to being built like a female weightlifter when the super-soldier serum in her system gets activated.
* Parodied in ''ComicBook/GreatLiesToTellSmallKids'', which claims Banner only half-hulks when he's irritated (such as by being asked to do the dishes).
* ''ComicBook/TheLeagueOfExtraordinaryGentlemen'': Dr. Jekyll's body produces the serum that turns him into the much larger Mr. Hyde whenever he's stressed. He spends nearly the entire Martian invasion arc in Hyde form.

[[folder: FanWorks]]
* A side-effect of Fauna's abilities in Roleplay/{{DC Nation}}. In human form? TechnicalPacifist (downgraded a bit from ActualPacifist) GranolaGirl or NewAgeRetroHippie, and more of a support staff than a combatant. [[http://community.livejournal.com/jla_watchtower/707845.html Push her]] past [[http://community.livejournal.com/jla_watchtower/423725.html the limit]], [[http://community.livejournal.com/jla_watchtower/550149.html though...]]
* Conversed in ''Fanfic/CalvinAndHobbesTheSeries'' when Dr. Brainstorm and Jack witness Socrates' head transmitter going off.
* Papa Smurf in the ''Fanfic/EmpathTheLuckiestSmurf'' story "Papa's Big Crush" when he inhales the "pheromone cologne" mixed in with his other chemicals, and in this state [[ParentalIncest he goes after Smurfette]].
* ''Fanfic/ThousandShinji'': When Asuka gets mad she transforms into a superpowerful, demonic-looking [[TheBerserker berserker]]: [[spoiler:her body becomes bigger and incredibly athletic and muscular (while not sacrificing a single drop of feminity), her blue eyes become dark-indigo, her hair's colour becomes brass bronze and her skin's blood-red, and huge ram horns sprout from the sides of her head.]] When she dons that shape she becomes incredibly strong, fast, agile and nearly invulnerable.
* In the ''Fanfic/PonyPOVSeries'', [[BadFuture Dark World Arc]], Angry Pie (the corrupted Pinkie Pie) has the Element of Rage and gets this power from it, making her stronger the angrier she gets. [[HairTriggerTemper Which is an easy thing to do.]] [[spoiler:She kept the power after her HeelFaceTurn until her death, at which point Rarity [[PowerParasite absorbs]] [[TakeUpMySword her Element]] and gains it.]] According to LooseCanon, [[spoiler:a [[BackFromTheDead resurrected Gilda]] is the next Bearer of the Element after Rarity retires, and gains this ability.]]
* [[VoluntaryShapeshifting George does this deliberately]] in ''Fanfic/TheKeysStandAlone: The Soft World'' when he has to get stronger very rapidly while still retaining the ability to speak. He'd started out as a gorilla but couldn't talk, so became himself as buff as he could possibly get. Unfortunately he didn't count on how much physically larger he would get, and is nearly mummified in his clothing before it rips off him. However, he is otherwise normal and changes back to his normal skinny self as soon as possible.

[[folder:Films -- Animated]]
* [[RidiculouslyCuteCritter Unikitty]] from ''WesternAnimation/TheLEGOMovie'' is normally an adorable, bubbly pink kitty. Once she loses control of her anger, she turns red and goes absolutely berserk.
* In ''WesternAnimation/HeavyMetal'', Hanover Fiste (with the help of the [[ArtifactOfDoom Loc-Nar]]) hulks out to disrupt Capt. Sternn's trial and allow him to escape.

[[folder:Films -- Live-Action]]
* Mark Ruffalo's version of The Hulk in ''Film/TheAvengers2012'' shows Banner's control is improved. He Hulks out twice: Once when in great pain, once again during the film's big battle, showing a measure of acceptance and control. In one scene, Banner strolls towards a massive [[SpaceWhale Leviathan monster]] bearing down on the team. On being asked when he was going to get angry and transform, he wryly admits that he's ''[[TranquilFury always]]'' angry and proceeds to Hulk-out, without breaking stride, before [[OneHitKill punching out the monster in one blow.]]
* ''Film/TheLeagueOfExtraordinaryGentlemen''. [[JekyllAndHyde Dr. Jekyll does this when he turns into Mr. Hyde.]]
* ''Film/XMenDaysOfFuturePast'': Beast uses a serum that allows him to maintain a balance between his human and mutant appearance. When he's angry or aroused[[note]]as demonstrated in ''The Rogue Cut''[[/note]] enough, his mutation kicks in, and he returns to human form once he's calmed down.
* In ''Film/BigTroubleInLittleChina'', Thunder seems to be doing this when he sees that his elemental brothers; Lightning and Rain; are dead. He starts expanding....then he keeps expanding....and then he blows up.

[[folder: Literature ]]
* In ''Literature/{{Twilight}}: New Moon'', Jacob and the other werewolves sometimes change into wolf form because of anger. The pack leader Sam's fiancee has disfiguring scars because Sam "lost control for a split-second."
* In ''Literature/TheGirlFromTheMiraclesDistrict'', when Nikita's adrenaline levels and body temperature are too high, they trigger her change into a berserk: a far taller, far bulkier humanoid with MoreTeethThanTheOsmondFamily and overwhelming lust for battle and blood.
* Werewolves in the ''Literature/MercyThompson'' series can transform involuntarily if they get angry enough. Being turned into a werewolf also has a side effect of giving the person serious anger issues unless they're a rare submissive or Omega. These are two of the primary reasons that newly turned werewolves have a lifespan of less than ten years.

[[folder: Live Action TV ]]
* A prize fighter in the ''Series/LostGirl'' episode "Raging Fae" keeps beating stronger foes because a Fae is secretly dosing him with a Hulk Out-inducing substance.
* PlayedForLaughs in ''Series/TheYoungOnes''. After receiving a merciless barrage of abuse from all three of his housemates, Neil does this in the ''Summer Holiday'' episode. [[spoiler:Turns out it was actually an IndulgentFantasySegue, though it's a mystery what happened to his clothes...]]
* While werewolves in the ''Series/BuffyTheVampireSlayer'' usually transform the day before, of, and after the full moon, when Oz learns to control the transformations he is then subject to InvoluntaryShapeshifting when he feels strong emotions (like jealousy over Tara's relationship with Willow).
* This is how werewolves in ''Series/{{Sanctuary}}'' work. Henry seems to be the first person to figure out how to control the changes (without drugs).
* Yet another werewolf example. In ''Series/BigWolfOnCampus'', Tommy would not only transform during a full moon, but also during times of extreme emotional stress... or arousal.
* [[http://www.youtube.com/watch?v=bRsVlOpz3Yc One prank]] in ''Series/JustForLaughsGags'' had a small boy wearing purple pants have his hat stolen, walk into a nearby portapotty - where he's lifted out through a door in the back by a large man painted green and wearing similar clothes as the boy, then gets in - and then rattles and breaks it open, yells and chases the kids.
* ''Series/{{Warehouse 13}}'' has the guys on a college wrestling team "hulk-out" when they take an energy drink [[spoiler:that's "spiked," as it were, with the essence of a Viking berserker ladle]]. It's much more subdued than other examples, but there's a catch: If the guys drink too much of it...Let's just say they [[ComicBook/FantasticFour "flame]] [[IncendiaryExponent on."]]
* If you torture a FriendlyNeighborhoodVampire in ''Series/{{Supernatural}}'', you can force him to show his fangs and take revenge as Martin finds out in [[Recap/SupernaturalS08E09CitizenFang "Citizen Fang" (S08, Ep09)]].
* Going "full-on zombie mode" in ''Series/{{iZombie}}'' is usually triggered either by immediate danger or hunger for brains. The zombie's eyes go [[BlackEyesOfEvil black]], and he or she attacks with inhuman strength and ferocity. Bonus points for one of the zombies calling the state "raging out" (who has learned to enter the mode on demand).
* ''Series/TheAmazingExtraordinaryFriends'': Dr. Dominique Brioche suffers an nuclear genetic accident and transforms into the 50 ft. Atomic Bombshell whenever she gets angry.
* ''Series/AgentsOfSHIELD'':
** Calvin Zabo ([[spoiler:Skye's father]]) has been using a homemade PsychoSerum on himself for decades. Therefore, even when he's not actively using it, he can achieve great feats of strength when angered. His catch phrase is "Let's not lose our heads." His actual serum is even more powerful, resulting in a small but striking physical transformation, and is activated by rage and [[spoiler:a shot of adrenaline]].
** Subverted with Robbie Reyes, AKA Ghost Rider. When he gets angry at widespread looting during a blackout, Daisy warns him to keep calm so he doesn't "go all [[FlamingSkulls carrot top again]]." Robbie laughs, as the Rider has nothing to do with his emotional state. It only comes out when [[DetectEvil there's evil around]], and even then Robbie can usually keep it contained until things get desperate.


[[folder: Mythology]]
* Possibly the UrExample is Cúchulainn of Myth/CelticMythology; in battle he would undergo something called ríastrad or battle frenzy, in which he would transform into something not unlike an EldritchAbomination in its hideousness and ferocity. This form was only beaten once, when he was approached by a [[FullFrontalAssault group of nude women]]. He modestly averted his eyes, whereupon the men snuck up on him and dunked him in a barrel of water, which exploded on contact. A second barrel boiled away, and the third became pleasantly warm before Cúchulainn resumed his normal form.
* Kali in Myth/HinduMythology is the hulked-out form of Durga/Parvati.

[[folder: Newspaper Comics ]]
* ''ComicStrip/{{Doonesbury}}'': When CloudCuckoolander GranolaGirl Boopsie channels Hunk-Ra, this tends to be what results.

[[folder: Professional Wrestling]]
* This was a staple gimmick for HulkHogan, crossing it with MeaningfulName. After being beaten down, he'd get his HeroicSecondWind and start {{No Sell}}ing his opponent's attacks, shaking his arms as he got back to his feet before starting in on his FiveMovesOfDoom FinishingMove.

[[folder: Tabletop Games ]]
* ''TabletopGame/WerewolfTheForsaken'' has Death Rage, where a werewolf will automatically transform to his "war form" and go on an unstoppable rampage. It's either triggered through pain or anger (and depending on your KarmaMeter, that anger can range from "one of your packmates just got killed" to "someone talked sass to you").
** Similarly, [[TabletopGame/VampireTheRequiem vampires]] have Frenzy, which is triggered by stimuli such as anger, fear or hunger. And unlike in the above example, getting sassed at ''is'' a perfectly normal stimulus for Frenzy. There's a reason everyone stays polite at Elysium...
** And [[TabletopGame/WerewolfTheApocalypse their]] [[TabletopGame/VampireTheMasquerade predecessors]] in the ''TabletopGame/{{old World of Darkness}}'' can also frenzy in many of the same situations. One possible flaw in ''Werewolf: the Apocalypse'' can [[InvertedTrope invert it]] - it designates one of the werewolf's other four forms as the form transformed into. The most severe version of it turns the raging werewolf into their human form - not so bad (comparatively) if you're losing your temper at the bar, but if you're surrounded by fomori and Black Spiral Dancers and need to fight your way out? Good luck.
* In the Arthaus edition of ''TabletopGame/{{Ravenloft}}'', darklord Alfred Timothy inverts this trope: he's a malicious and willing werewolf, but his darklord curse forces him to revert to his ''human'' form if he allows anger, bloodlust, passion, or other strong emotion to overcome him while in his wolfman form.

[[folder:Theme Parks]]
* In the queue of ''Ride/TheIncredibleHulkCoaster'' at [[Ride/UniversalStudios Universal's Islands of Adventure]], government test footage is shown of volunteers successfully being turned into Hulk-like superhumans.

[[folder: Video Games ]]
* In ''VideoGame/BreathOfFireIV'', Ryu first transforms into his [[{{Gamebreaker}} Kaiser form]] after he witnesses Captain Rosso kill some innocent children and send an [[HopelessBossFight invincible monster]] after him and his friends. Ryu then kills both the monster and Rosso, and it takes a CooldownHug from Nina for him to regain his senses. Afterward, he can transform into Kaiser at will, but it cannot be controlled until you finish a certain sidequest.
* Bowser only reaches [[MakeMyMonsterGrow his highest level of power]] in ''VideoGame/MarioAndLuigiBowsersInsideStory'' after being (otherwise fatally) crushed, with a little help from the Mario Bros.
* In ''VideoGame/VampireTheMasqueradeBloodlines'', there are several ways of unleashing The Beast, which Smiling Jack describes as a beast wearing you as a suit, in which you go into an uncontrollable frenzy.
* In the original ''VideoGame/FatalFury'', [[OldMaster Tung Fu Rue]] will transform into a larger, more muscular version of himself after taking too much damage (although he will change back after taking more). Future games restricted this to the use of his super moves. More recent games that feature him reveal that he's not actually transforming at all, but that the muscular version of Tung is actually a BattleAura of sorts.
* In ''VideoGame/{{Amagon}}'', the titular player character transforms into the Hulk-like Megagon for SuperMode.
* One ''Videogame/WorldOfWarcraft'' expansion introduces worgen, humans afflicted by a werewolf curse, as a playable race. While they eventually learn to shift between human and worgen form at will, entering combat immediately shifts them into worgen form. Some even say "YouWouldntLikeMeWhenImAngry" if you [[StopPokingMe click on them enough.]]
* Anders in ''Videogame/DragonAgeII'', whenever he is overtaken by the Spirit of Justice inhabiting him.
--> '''Justice''': '''[[foldercontrol]]

[[folder: You will never take another Mage as you took him! ]]
* Despite rage being a main theme, Asura from ''VideoGame/AsurasWrath'' primarily averts this. He does, however, grow bigger arms that pack at least a a thousand times more power in them in his [[SuperpoweredEvilSide Berserker form]], his [[ConservationOfNinjutsu Mantra form]] and his [[AttackOfThe50FootWhatever Destructor]] [[HumongousMecha form]] (Which also has a human sized form, that basically is Asura mantra form, but with four extra arms and a rainbow aura instead of Asura's plain red Aura).
* [[VideoGame/TransformersFallOfCybertron Grimlock's]] alternate mode is somewhere between this and SuperMode. In-game, the transformation isn't involuntary but does require Big Grim getting incredibly pissed to gain access to it and he does grow in size upon transforming.
* One of Krieg's endgame abilities in ''Videogame/{{Borderlands 2}}'', "Release The Beast", has him mutate into a Badass Psycho when he activates Buzzaxe Rampage at 1/3 of his health. The mutation involves his left arm shriveling into a worthless stump while his torso and right arm grow to ridiculous size, giving him a massive boost in damage resistance as well as melee damage.
* While not shown, Leo Hartwig's in ''VideoGame/BioShock2'' transformation into a Brute Splicer involves this. It is heard in his Audio Diary "Field Trial #1".
* ''VideoGame/{{Overwatch}}'' has Winston, whose [[LimitBreak Ultimate]] consists of him temporarily regressing into his primal instincts and becoming an AxCrazy muscular brute who trades off his [[ShockAndAwe Tesla Cannon]] for powerful punches, faster Jump Pack cooldown, and doubled HP.
* In ''VideoGame/LeagueOfLegends'', Gnar's gameplay revolves around this premise. His playstyle is based around his Rage bar (which fills as he deals damage and gets damaged), which will transform him from a cute, prehistoric yordle into a hulking beast known as Mega Gnar (for a small period of time). Mini Gnar is a fragile and nimble ranged champion, while his alter form, Mega Gnar, is bulkier (both in damage and defenses), slower and melee-based. Managing his Rage bar and mastering both forms are required to perform well with him.
* In ''VideoGame/TransformersFallOfCybertron'', the Dinobot Grimlock is unable to transform at will due to lengthy surgical experiments conducted upon him by Shockwave. It's only when Grimlock gets immensely angry that he is able to transform into his T-Rex alternate mode.
* In addition to the various Hulks, several other characters in ''VideoGame/LEGOMarvelSuperHeroes'' share the same property, transforming from a minifig into a larger figure with super strength. Most notable are probably ''{{ComicBook/Venom}}'' and Stan Lee himself when unlocked as a playable figure, possible in reference to the Simpsons episode mentioned below.

[[folder: Web Comics ]]
* In ''Webcomic/NineteenSeventySevenTheComic'': When the normally easy-going Bud has had just about enough and transforms either into or out of his alter-ego Budette.
* ''Webcomic/{{MAG ISA}}'' -- [[http://mag-isa.thecomicseries.com/comics/pl/119791 Kyle]] turns into this chunk of muscle after injecting himself with green roids
* Fug from ''[[http://www.pewfell.com/ Pewfell]]'' is normally a GentleGiant... until he gets angry, then he turns into something resembling an EldritchAbomination with arms.
* Shrinking Violent of ''Webcomic/EverydayHeroes'' has her transformation triggered with a blow to the nose. She can be snapped out of it via massive amounts of sugar. Unfortunately [[BlessedWithSuck she's also a Type 1 Diabetic]], which means a couple of days in the hospital after every Hulk Out, at best. Also, she gets ''smaller'' when she transforms. Her muscles contract and get denser, so [[http://eheroes.smackjeeves.com/comics/1895761/violets-in-the-workplace/ even her strongest teammate can't hold her down.]]
* Sarah of ''Webcomic/PeterIsTheWolf''. As a new Thrall ([[IHateYouVampireDad a were who's created, rather than born]]), she tends to transform when ever she gets too excited. Unlike every other were in the comic, she transforms into a wolf form three times her normal size and can only really be calmed down by [[IntimateHealing sexual gratification]].
* Marty Monster from ''Webcomic/TheAdventuresOfDrMcNinja'', "Monster Mart". At the start, he'd been having problems with his transformation to and from his monster form, until he gets stuck halfway. At the end, seeing Dr. [=McNinja=] in mortal peril is enough to knock down his psychological barriers and allow him to grow bigger than ever before. He inherited this from his father; the problem with his father ([[WellDoneSonGuy aside from always looking down on him]]) is the fact that he's a Steven Hawking {{Expy}}, and so every time he transforms he falls over and left naked until he shrinks back down.
* Sweater Puppy and The Incredible Cunt from ''TheMagnificentMilkmaid''. Both turn into giant, large breasted [[AnythingThatMoves nymphomaniacs]] (in SP's case, a nymphomaniac werewolf) upon their triggers (Sweater Puppy from seeing or even thinking about the Moon, Incredible Cunt from being called "a cunt").
* Prozac of ''Webcomic/BearNuts'' goes HULK SMASH after a prolonged time off his meds.
* Jimmy Rollins hulks out after being reminded that this is a contract year for him in The Dugs' Baseball Comics.
* Justin of ''Webcomic/ElGoonishShive'' does this in [[http://www.egscomics.com/sketchbook/?date=2011-02-24 this]] filler strip.
* The Incredible Lioness, a transformation of Rosechu from ''Webcomic/{{Sonichu}}''.
* In ''Webcomic/SisterClaire'', apparently masters of Nun-Fu can [[http://www.sisterclaire.com/comic/book-1-chapter-8-pg-193 do this at will.]]
* In ''Webcomic/{{Tripp}}'', [[spoiler:Coco does this after aliens put a chip in her head]].
* The title character in the Webcomic/HeroesUnite ''Fury'' story.
* Demons from Webcomic/SlightlyDamned have this as a race ability, in extreme stress, anger, injury or if they know death is certain [[TakingYouWithMe willingly]], they transform into larger more monstrous versions of their normal selves[[labelnote:example]] [[spoiler:Buwaro]] goes from a bipedal human sized teenager to a sabertoothed quadruped with a burning tail.[[/labelnote]] and get a massive boost to their physical and magical capabilities but loose all self-preservation and will [[AttackAttackAttack mindlessly slaughter]] any living thing they see (including friends and family) or [[SelfHarm mutilate themselves]] if there is nothing to kill. Their body is also pushed to its absolute limit and they eventually die of exhaustion although it is possible to save them by either renderrng them unconseious (easier said than done given [[MadeOfIron how tough]] they are normally) or by using [[spoiler:an angel star pendant with the [[ProtectiveCharm holy protective spell]] removed.]]

[[folder: Web Originals]]
* Lung, a villain from the web serial ''{{Literature/Worm}}'', grows bigger, stronger, more invulnerable and less human-looking the longer a fight goes on.
** Crimson of the Slaughterhouse Nine becomes incredibly strong and durable when he drinks human blood.

[[folder: Western Animation ]]
* In the ''WesternAnimation/WordGirl'' episode introducing Eileen (The Birthday Girl), the more she was selfish the bigger she grew and the greener she got; once she gave somebody something she returned to normal size and color.
* In ''WesternAnimation/TheVentureBrothers'' Doctor Venture once thought Hank to be blessed with "retard strength" but was mistaken.
* ''WesternAnimation/SouthPark''
** Parodied in the episode "[[Recap/SouthParkS14E9ItsAJerseyThing It's a Jersey Thing]]", when Kyle's "Jersey side" comes out. Only the "transformation" is him putting on hair gel and jewelry, ripping off his sleeves and writing a nickname on his shirt.
** Played straight in the episode "A Scause For Applause" when [[spoiler:Jesus takes HGH at the end.]] [[http://www.youtube.com/watch?v=gZWYCcIorDk The scene that follows that]] has to be seen to be believed.
* Laura Limpin from ''WesternAnimation/CodenameKidsNextDoor''. Every time something doesn't go her way, she transforms into a giant rasby-voiced wrestler called "The Big Badolescent" and [[CurbStompBattle beats up anyone who disagrees with her.]]
* On ''WesternAnimation/JimmyTwoShoes'', Heloise spends an entire episode in a SweetPollyOliver disguise named Herman. When Jimmy and Beezy find out, they find "Herman" and proceed to utterly prank him. Just as they are laughing at him, [[MistakenForAnImposter the real Heloise shows up]]. It seems Herman is her real cousin, and they made him mad...
* Katie Kaboom from ''WesternAnimation/{{Animaniacs}}''.
** Also, the Brain in the ''WesternAnimation/PinkyAndTheBrain'' segment "Brain Meets Brawn".
* The eponymous character of ''WesternAnimation/{{Kaeloo}}'' goes through this OncePerEpisode.
* From ''WesternAnimation/TheSimpsons'': HOMER MAD!!! HOMER SMASH!!! GET REVENGE ON WORLD!!!
-->'''Stan Lee:''' He can't be the Hulk! I'm the Hulk! ''[rips shirt]'' Mrrrroaarrr! ''[breathes heavily]''
-->'''Comic Book Guy:''' Oh, please. You couldn't even change into Bill Bixby.
-->'''Stan Lee:'''Come on, damnit, change! Mmmmm! Aw, forget it. Mm-mmmm! [[NoodleIncident I really did it once]]!
-->'''Comic Book Guy:''' ''[walking Stan Lee in the store]'' Yes, yes. I just wish you had the power to leave my store.
-->'''Stan Lee:''' ''[off-screen]'' Mmmmmh!
-->'''Comic Book Guy:''' You almost had it there.
* Fuzzy Lumpkins in ''WesternAnimation/ThePowerpuffGirls'' episode "Fuzzy Logic".
** The mayor, of all people, momentarily becomes totally '''ripped''' and delivers a [[CrouchingMoronHiddenBadass major ass kicking]] in "Impeach Fuzz" after Fuzzy [[BerserkButton wears his hat.]]
* ''WesternAnimation/MyLittlePonyFriendshipIsMagic'': In the episode "Power Ponies", when the cast gets [[TrappedInTVLand sucked into a comic book]], [[ShrinkingViolet Fluttershy]] gets this as her superpower.
** Spike had a similar transformation into this in "Secret of My Excess".
** King Sombra seemingly underwent this during his imprisonment in "The Crystal Empire".
** Lord Tirek gradually invokes this the more he uses his ManaDrain in "Twilight's Kingdom".
* In the ''WesternAnimation/SamuraiJack'' episode "Jack and the Smackback", Jack's first opponent is a man-ape creature named Gordo the Gruesome who does this after he gets angry enough; Jack still beats him.
** Likewise, the titular goofy dumb beast from "Jack and the Creature" undergoes a frankly horrific transformation into a gargantuan, crimson-furred razor-sporting abomination after Jack starts getting smacked around.
* About halfway through ''WesternAnimation/CaptainSimianAndTheSpaceMonkeys'', Gor-illa gets an upgrade from an UnstoppableRage to this at the hands of recurring antagonist Ajax, causing him to transform into the berserk Film/KingKong expy Gormungus whenever his rage builds high enough.
** In the same episode, one of Gor's initial opponents looks like an emaciated little bird-man alien about the size of Spydor. Gor expresses reluctance at fighting someone some small and harmless looking, whereupon Spydor angrily asserts that it's "dog-eat-dog" in this business. When Gor [[LiteralMinded protests that he doesn't want to eat a dog]], the alien grins a toothy grin... ''[[BodyHorror and then turns himself inside out]]'', transforming into a hulking monstrosity that vaguely resembles a skinned gorilla with spikes growing out of it.
--> '''Spydor''': [[OhCrap Well, this dog wants to eat you!]]
* In the ''WesternAnimation/TheAdventuresOfJimmyNeutronBoyGenius'' episode "The N-Men" After crossing through the Van Patten Radiation Belt, the main characters all wind up getting superpowers based on what exactly they were doing when they crossed through the belt, Jimmy was under a state of incredible frustration as they crossed through the belt and combined with the stress handling the other characters plus the constant mockery that Jimmy goes under in this episode, only triggers the Hulk Out.
* ''WesternAnimation/TheClevelandShow'': The episode "Once Upon a Tyne in New York" ends with Coach [=McFall=] and the others running from his old flame, who is now green and muscular.
-->'''[=McFall=]:''' I've made her angry! You wouldn't like her when she's angry!
* The animated ''[[Series/ElChavoDelOcho El Chavo]]'' series occasionally has Señor Barriga turning into a LawyerFriendlyCameo version of the Hulk in either the opening or closing sequences (or both).