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1%%This page's examples section is sorted alphabetically. It would be lovely if you'd maintain this, thanks.
2%%
3
4->''"The opportunity to secure ourselves against defeat lies in our own hands, but the opportunity of defeating the enemy is provided by the enemy himself."''
5-->-- '''Literature/TheArtOfWarSunTzu'''
6
7In video games, it's quite common for a boss to only be vulnerable at a particular time. It's one thing if it's due to the boss needing to catch their breath every so often or the like. But sometimes, it's just because a given attack leaves them open. Maybe it exposes a {{weak spot}} while preparing the giant laser, [[TennisBoss maybe their attacks double as weapons]] or platforms that the player can use to reach their target, maybe on occasion it decides to just stand there laughing at you with its defenses down, or maybe [[BullfightBoss it will keep charging head on into walls]] until it dies.
8
9This is a specific form of HoistByHisOwnPetard -- the boss only has to avoid one particular action to be literally invincible. Since it involves the boss intentionally leaving themselves open, it also heavily involves carrying the VillainBall. Finally, FridgeLogic heavily comes into play - it's usually in retrospect that you realize the boss in question is foolish for continuing to perform the attack even after it's been exploited several times. With animal bosses or others too unintelligent to realize their mistake, this can be justified, and to an extent it can make sense with robotic bosses as well, but in that case you have to wonder who designed and programmed them...
10
11There's a variation of this where the boss ''does'' stop using a particular move that leaves it open to attack... only to then use a ''different'' move that ''also'' leaves it open to attack.
12
13Bosses like this can occur with any of the three types of AI (as described in ArtificialStupidity)
14* AIRoulette: The boss will use one of several attacks randomly, but only a fraction of them (often just one) leaves it vulnerable to damage. Since the length you have to survive for is dependent on how often the boss makes the suicidal attacks, the fight is partially a LuckBasedMission, and can easily make for a GoddamnedBoss.
15* Set Pattern: The boss has a fixed cycle of attacks, and at some point renders itself vulnerable.
16* Analytical/Responsive: The boss will make itself vulnerable if given a certain situation. If the boss was run by a smart analytical AI, it would only use the vulnerable attack as a last resort, when no safe attack is possible (possibly not even then, if the boss doesn't care about letting the player live). But usually ArtificialStupidity is applied deliberately to prevent the game from becoming {{Unwinnable}}, especially if the boss always has safe attack options available. Alternatively, there may be a TacticalRockPaperScissors system where the boss defending itself from one kind of attack leaves it vulnerable to another, forcing the player to work out the right {{Combo|s}} of attacks to defeat it.
17
18When it comes to video games, DeadlyDodging is nearly a sub-trope, as is TennisBoss. Sister trope to AttackItsWeakPoint. See also BossArenaIdiocy. Contrast BossAlteringConsequence, where the boss' weakness isn't the only way of defeating them but may give you a significant advantage if you know how to exploit it. When a boss deliberately sacrifices itself ''as'' a tactic or a method of attacking, that's ActionBomb or TakingYouWithMe instead.
19----
20!!Examples
21* ''Franchise/AceAttorney'': Some villains fall under a puzzle-game variant.
22** Redd White [[labelnote:Disclaimer]] [[ReverseWhodunnit Not a spoiler, because he is revealed at the beginning of the case]] [[/labelnote]] could not be forced into court ''at all''. The only reason he appears as a witness (offering the player the opportunity to expose him) is because he decides he wants to pin the crime on Phoenix on a whim.
23** The final boss ''also'' could not be brought to court as the crime he committed (and is eventually convicted for) had become a cold case years ago, but [[spoiler:Manfred von Karma]] just ''had'' to bring it up again [[spoiler:to pin it on Edgeworth]] on the day before the Statute of Limitations expired on it.
24** [[spoiler:Furio Tigre]] would have gotten away with it all if he would have [[INeverSaidItWasPoison kept his mouth shut.]]
25** [[spoiler:Quercus Alba]] makes it very clear that he can leave whenever he pleases, but sticks around anyway because he finds it amusing to fuck with Edgeworth and company. He does try to leave a couple of times, only to get distracted by someone interjecting out of nowhere. ''Four times.''
26** The final trial of ''Spirit of Justice'' is against [[spoiler: Queen Ga'ran, who could use her royal authority to]] end the trial at any time; it's only continued beyond the very start because they want to make an example of Apollo & co. Yet despite this, it ''never'' occurs to her until after [[spoiler:she is exposed as the murderer- at which point the final puzzle is to prove she ''isn't'' the rightful queen and thus her authority never applied.]]
27** Averted with the final villain of ''VisualNovel/TheGreatAceAttorney'', who ''does'' attempt to use his power as [[spoiler: Britain's Lord Chief Justice]] to get the trial's result thrown out, but that's when Sholmes drops in and [[spoiler: reveals that he broadcast the trial live to the only person whose authority Stronghart couldn't overrule - Queen Victoria herself. The Queen promptly fires him and orders him to be prosecuted for his crimes.]]
28* Nigel Bloch in ''VideoGame/AgentUnderFire'', both times. If he didn't drop his rocket launcher in the final battle, all he'd have to do is float there with his jetpack until the withdrawing floor beneath you finally collapses and drops Bond into the pit. Earlier, he'd have been invulnerable if he hadn't called in the mooks that helpfully provide you with the rocket launcher when killed, nor would there have been a problem if he had chosen not to stop the fans protecting the air vents above the geothermal power station.
29* ''VideoGame/AHatInTime'':
30** The Snatcher attempts to subvert this: Bosses in this game turn blue to indicate that they're vulnerable to attack. The Snatcher makes himself impossible to damage for the first phase of the fight by... [[LeaningOnTheFourthWall Not turning blue.]]
31--->'''Snatcher:''' You're probably waiting for me to turn blue, aren't you? Sorry kiddo, blue doesn't suit me. And I guess that makes me invincible, huh? That's too bad! [[EvilLaugh HA HA HA HA HA HA!]]
32** Unfortunately for him, it's promptly {{Double Subver|sion}}ted: One of his attacks leaves a blue potion lying on the ground (from an attack with dozens of them; it simply didn't shatter like the rest) which can promptly be tossed back in his face, dying him blue and making him fully vulnerable for the rest of the fight.
33--->'''Snatcher:''' Did you just color me blue with my own attack? [[OhCrap This can't count, right? Surely this doesn't count!?]]
34** Even after you turn him blue, he’s still unhittable while he's in the center of the arena. If he only used attacks that don’t involve him leaving the center, he wouldn’t have lost.
35** The "Quality Time with Snatcher" Death Wish included in the "Seal the Deal" DLC is a variation of the Snatcher battle where Snatcher never does his potion attack, becoming completely invincible. The Death Wish is considered won if the player dies after surviving Snatcher's onslaught for two minutes (or four and six minutes for the optional challenges).
36* ''VideoGame/AlienSoldier'' has the giant moth Bugmax. It frequently uses a move where it [[MookMaker drops caterpillars]] that [[HelpfulMook provide health]] when destroyed. Your character has a very damaging [[KillItWithFire fiery]] dash-[[TeleFrag teleport]] that can only be used at full health, after which he will need to get more as the attack is CastFromHitPoints. [[CurbStompBattle You know where this is getting already]].
37* In ''VideoGame/AmericanMcGeesAlice'', the Voracious Centipede is invulnerable to attacks, except for an old scar on its underbelly. It is usually hidden, but can be targeted when the Centipede is rearing for a body slam attack.
38* ''VideoGame/{{Amorphous}}'':
39** The Gray, which normally will harden in reaction to your attack. Its main attack, a steely tendril, leaves it unprotected until it is retracted.
40** The Horror, which is essentially the Gray on steroids -- basically, a living buzzsaw that your sword bounces off of (leaving you wide open to being [[LudicrousGibs shredded]]). However, at certain points it fires out four flying saw blades, which again render it immobile and vulnerable until they return.
41** The [[GravityMaster Void Eater]] is only vulnerable when using its [[DisintegratorRay beam attack]]. Trying to attack it at any other point (or even getting close, for that matter) well result in you getting splattered all over the screen. If you attack a mobile black hole, you [[TooDumbToLive deserve exactly what you get]].
42** The [[TrueFinalBoss Razor Queen]] is only vulnerable to attack after it charges you.
43* ''VideoGame/ANNOMutationem'': T.R., the head of the [[TheMafia Factio Pugni]], fights with two giant weaponized freighter ship crane arms, capable of crushing intruders to death along with conventional weapons like missile pods. After T.R. has done enough attacks, his machine overheats and exposes opened panels, Ann can then use her Tunguska missile launcher, which is the only way she can deal damage to the vulnerable motors that keep the crane arms working.
44* This trope is the reason the "Bottles Revenge" mode (a normally DummiedOut feature where the second player can play as the ghost of Bottles and possess enemies to accost the first player) in ''VideoGame/BanjoTooie'' is disabled against bosses, as a player controlling a boss character could make it {{Unwinnable}} as long as they manage to avoid using anything that would expose the boss's weakness.
45* ''Franchise/BatmanArkhamSeries'':
46** Poison Ivy in ''VideoGame/BatmanArkhamAsylum''. Throughout the fight, Batman is standing on a small platform. She occasionally makes strangling vines burst from the ground, but only on 2/3 of the platform at a time. She also spends the fight encased in a batarang-proof transparent dome, but she occasionally [[TooDumbToLive opens it to laugh at Batman]].
47** Subverted big-time by [[spoiler:Mister Freeze]] in [[VideoGame/BatmanArkhamCity the sequel]], who actually ''learns from the player's tactics'' as the fight goes on. It's widely considered one of the [[BestBossEver best boss fights]] in the series.
48** In ''[[VideoGame/BatmanArkhamKnight Arkham Knight]]'', the eponymous Arkham Knight has serious problems noticing patterns.
49*** When Batman fights his tank, he needs to destroy the four coolant reserves located outside the tank, while Knight uses a slow 360 degree check to look around. While Batman will be forced to flee after destroying one, the Knight could just guard the last remaining weak point, but he still keeps on looking around him, allowing Batman to destroy the last one.
50*** In the second fight, he chases the Batmobile to tunnels which are filled with explosives, heavily damaging his excavator in progress. This happens four times.
51*** And finally, he fails to realize that Batman is attacking from directly below his vantage points; He seems to check there every now and then, but he does control a drone, which he could just position to guard the area below the vantage point.
52** [[spoiler: The Riddler]] runs into a similar problem as Poison Ivy, as [[TooDumbToLive he keeps turning off the force-field]] on his MiniMecha to bring in more {{Mook}}s.
53* ''VideoGame/{{Bayonetta}}'': Though Golem's core can be attacked any time the boss itself is attacking, only a few of its forms allow you to activate [[BulletTime Witch Time]]. This is not usually a problem, except during a timed challenge mission where the boss can only be hurt during Witch Time. During that mission, you are entirely at the mercy of whether it decides to use the two attacks that leave it vulnerable.
54* Titan Din from ''VideoGame/BeardBlade'' is a Krakken residing in a ''lava'' pool, who spends the whole fight trying to smash you with it's tentacles. But for some reason, each time it misses a swing, it's tentacle remains on the spot (rather than retracting) allowing you to damage it. The tentacles doesn't even attempt to defend themselves after appearing in the foreground.
55* Almost all of the bosses in ''VideoGame/BillyHatcherAndTheGiantEgg'' do this. With most of the bosses, all you have to do is dodge everything until they mess up and become vulnerable; sometimes the bosses do the dumbest or clumsiest things to allow them to be harmed.
56* The Alien Robot at the end of the second level of [[FreewareGames freeware]] ''VideoGame/BinaryBoy'' would have been invulnerable if he didn't feel the need to randomly shoot behind him, often hitting his own ship. Needless to say, he shuts down once the ship is destroyed.
57* The first four bosses in ''VideoGame/{{Boktai}}'' all have attacks or behaviors that can be used against them. Not only do these tend to be the most effective ways to damage them, but it's also your ''only'' way of damaging them if you run out of ammo and lack sunlight (which forces you to use the Luna Lens, which [[PowerOfTheVoid takes no energy but inflicts no damage]]), so they'd be somewhere between "at a massive advantage" and "unbeatable" if they didn't do these things. The Count throws daggers that can be deflected back at him, Muspell can be tricked into rolling to the edge of the platform and then shoved into the lava, Garmr's ice block obstacles can be shoved into him, and Carmilla's attacks can be reflected with the mirrors in the room (which she ''can'' destroy, but chooses not to). The only two bosses smart enough to not give you such opportunities are [[EvilTwin Sabata]] and [[FinalBoss Queen Hel]].
58* The Metal Queen in ''VideoGame/BrutalLegend'', a giant spider who'll expose her soft underbelly periodically. Possibly justified in that a wild animal would take more than [[RuleOfThree a few hits]] to be trained into not using that attack.
59* ''VideoGame/{{Bug|1995}}'' had three of the bosses fall under this:
60** The giant horned lizard from Reptilia combines this and BossArenaIdiocy. It would use an attack that made boulders fall from the sky in an attempt to crush you... which then roll into catapults at the sides of the arena. It would then ''move into range'' of the catapults, allowing Bug to launch them at him.
61** The octopus from Quaria throws fish at you, in which case Bug uses a [[TennisBoss tennis racket to bat them back to his big head]].
62** The main villain, Queen Cadavra, tries to [[BellyFlopCrushing squash Bug with her huge girth]] after every attack phase, landing on the platform Bug was on. This allowed Bug to GoombaStomp her, which he normally couldn't hit since she attacked from the background. It gets even more tactical suicide later on in her final phase where she ''repeatedly'' attempts to use the squashing attack.
63* At least three bosses in ''VideoGame/BugsBunnyLostInTime'' are guilty of this: Yosemite Sam's powder kegs, Mugsy's bombs, and Marvin's instant Martian tablets can all be thrown back at them.
64* Six out of eight bosses in ''VideoGame/ChipNDaleRescueRangers 2'' are this, providing you with the projectiles needed to defeat them (the others are victims of BossArenaIdiocy.) The final boss, a robot made by Fat Cat, takes the cake: he drops bombs on the ground every time he flies into the air, which the player is then supposed to throw at him at the precise moment... or they can just not touch the bomb at all and wait for him to land back on the bomb.
65* ''VideoGame/CogenSwordOfRewind'':
66** The boss of stage 1 is a giant mecha that can't be harmed by sword strikes. All it needed to to it to keep trying to crush you with its sheer weight. Instead, it starts throwing bombs at you, that can [[TennisBoss be reflected back]] at it, damaging the boss and making it vulnerable.
67** The boss of stage 3 is also impervious for attacks, but when it jumps into molten metal in order to raise its level and burn you, it overheats, forcing it to expose its fragile heatsink and core.
68* ''VideoGame/CrashBandicoot'': Almost every boss in the franchise is one of these.
69** ''VideoGame/CrashBandicoot1996'':
70*** Koala Kong throws rocks at you, but he gets so tired that the third one lands in front of you, where you can spin it back. He could instead have waited for one of the TNT crates that intermittently fall from the ceiling to kill you, since you can't do anything except dodge them.
71*** [[PunnyName N. Brio]] throws green potions at you that turn into monsters that you can jump on to hurt him, instead of just using the purple potions that explode and can't be blocked or reflected back at him.
72*** Cortex shoots at you with [[ColorCodedForYourConvenience green]] lasers that can be spun back at him when he could simply have continued with the red and blue ones that can't?
73** ''VideoGame/CrashBandicoot2CortexStrikesBack'':
74*** While in the first game's fight with Ripper Roo, the explosives used to hurt him came from somewhere upstream, here he creates them himself and actually sets them off, getting himself caught in the explosion which in turn leaves him vulnerable for Crash to attack. Somewhat justified by the fact that he's insane and possibly a masochist.
75*** Right after that is the Komodo Bros. Had Moe just kept throwing his swords at Crash instead of sending Joe spinning around after him, the latter wouldn't get himself dizzy so Crash can send him bouncing back into Moe.
76** ''VideoGame/CrashBandicoot3Warped'':
77*** Tiny wouldn't be vulnerable if he kept trying to stomp on Crash or just sent more of his lion {{Mook}}s after him instead of using his trident, which naturally gets stuck in the ground so that Crash can attack him.
78*** Dingodile destroys the crystals forming a protective barrier around him when he should've just kept shooting fireballs into the air instead.
79*** N. Tropy, for whatever reason, has the courtesy to create a trail of platforms leading to him whenever he becomes exhausted. He does the same thing as the TrueFinalBoss of ''[[VideoGame/CrashBandicoot2NTranced N-Tranced]]''.
80*** Cortex decides to lower his energy shield at the same time he blows open a hole in the floor with mines for no apparent reason.
81** In ''VideoGame/CrashTwinsanity'', Cortex not only uses three attacks, only one of which you can deflect, but he actually ''tells you how to beat him.''
82---> ''It's sort of like a birthday party, except... The exact opposite. Let's start handing out the presents... *gets on his hoverboard* This is from Tiny. *throws a bomb* This is from Dingodile. *throws another bomb* Ripper Roo, you shouldn't have! *another bomb* Pinstripe, how thoughtful! *and another* Oh dear, two of the same! *throws a final bomb and starts charging his ray gun* '''Here's one gift you can return!''' *fires*''
83** ''VideoGame/CrashBandicoot4ItsAboutTime'': N. Gin, N. Brio and Cortex (twice) all make the exact same mistake by sending {{Mook}}s that can be spun back at them after you instead of continuing to use their other unblockable attacks. N. Brio also makes the same mistake he made in the first game by using green potions instead of purple ones.
84* Roxie in ''VideoGame/CrusaderOfCenty'' consists of a cartoon heart somehow protected by a person-shaped silhouette of string. It can swing its arms like flails or fire them as {{Rocket Punch}}es. Its other attack is an anime-style charge up that releases an eight-way energy wave -- and also temporarily collapses the string, leaving its heart open to damage. Roxie would be invulnerable if its random programming simply never used that last attack.
85* In ''VideoGame/CryptOfTheNecroDancer Amplified'', The Conductor creates five batteries during her second phase. These batteries have wires that electrify your attacks, causing them to [[ChainLightning zap any enemies adjacent to the one you attacked]]. Doing this also drains the batteries' power, meaning she would have been invincible if she didn't constantly summon enemies that you could attack.
86* The second game in the ''VideoGame/CTSpecialForces'' series has the Middle Eastern insurgent leader, Arum Baya, who attacks you in an armored vehicle which deflects ALL your shots, and has a Gatling gun on its top capable of hurting you. He's practically invincible, but for some reason, every few seconds during the battle, Arum Baya will deliberately stick half his body out of the armored vehicle to take potshots at you via machine-gun. Doing so allows you to damage him until he ends up crashing the vehicle.
87* ''VideoGame/CursedTreasure'' - the pirate ship hurls smoke bombs that you can throw back for considerable damage, and the High Priest projects a force field that can only be shattered by the swords of his own templars, then unleashes a squad of said templars to attack you. The Barbarian Queen can also fall into this, when she stops to sing the gems toward her; if she picks a bad location, she will take more than a little damage as all your towers rip into her.
88* Happens a lot in ''VideoGame/DanganronpaAnotherEpisodeUltraDespairGirls''. Granted, most of the bosses are little kids who might not be that smart about fighting.
89** Jataro's robot's weak point would never have been exposed if he didn't keep throwing bombs that you can send back at him, and instead kept shooting missiles.
90** Kotoko's fight is in an arena filled with water, with some dry raised areas. If she kept slashing you or she only stabbed the ground above dry land, you'd never have been able to expose her weak point by electrocuting the water.
91** The fight against [[spoiler:Genocide Jack]] [[JustifiedTrope justifies]] this. The boss needs to periodically recharge, which also leaves them open to attack. After the fight, the protagonist realizes the boss could have just killed her much faster, but they gave her a chance.
92* Both bosses of Iron Canopy in ''VideoGame/{{Darksiders}}'' are of this variety. The Brood Mother has a sucking in air "attack", which doesn't actually do anything but let you feed her a [[ImAHumanitarian tasty morsel]] to give you a shot at her vulnerable backside. The boss of the area, Silitha, will occasionally interrupt her TeleportSpam to stand briefly still and taunt you.
93* ''VideoGame/DarkSouls'':
94** Ceaseless Discharge is a giant boss that you fight from a cliff that's at his chest height. He's pretty tough to beat fighting him legitimately, however there's a built-in EasyLevelTrick where if you run back to the fog wall immediately after angering him by looting the corpse he's guarding, he'll chase you back there until he runs out of ground to stand on. For some reason, rather than do his ranged fire breath attack from safe ground, he'll try and leap over the huge pit to get at you. This results in him hanging off the side of the cliff, completely helpless. You can then attack the arm he's hanging on with until he lets go and falls to his death instantly. What's worse is that if you die to him, when you come back, he ''will'' use his fire breath on you if you just stand by the fog wall after re-entering. You have to run all the way back up to the corpse to sufficiently piss him off again and then run all the way back before he'll try jumping at you.
95** A minor example with Seath the Scaleless. He's completely invincible until his SoulJar is destroyed. You can destroy it yourself, or trick Seath into accidentally destroying it while trying to attack you. If he ends up destroying it, he stops attacking to curse his own stupidity for a few seconds allowing you to get some good damage in.
96* The penultimate boss of the original ''VideoGame/DestroyAllHumans'' has a penchant for attacking Crypto's saucer with AA missiles. Missiles that you can redirect to their source with a simple press of a button, [[GuideDangIt assuming you have the right saucer upgrade installed]]. The boss never wises up to this tactic and continues to try and MacrossMissileMassacre you until it gets blown apart by it own munitions.
97* Basically half of all bosses in ''VideoGame/DinoCity'':
98** The first boss, Crasher, drops rock columns to prevent you from reaching him, but then took cover behind those rocks - which can be destroyed, the resulting debris flying to the other side of the screen where Crusher is standing, automatically damaging himself. Rinse and repeat and Crusher's down in less than a minute.
99** The Trampo bird is a GiantFlyer who can drop projectiles while afloat right at the top of the screen, out of reach from your attacks. But his tactics alternates between dropping projectiles and mooks, the latter which can be used as a GoombaSpringboard for you to damage him, instead of relying on the former.
100** The Pole Press is an AdvancingWallOfDoom with only one weakness, it's upper section, which you couldn't reach by jumping. Logically it should just advance and crush you on the spot, but instead the Pole Press will occasionally release weak, easy-to-dodge spikes from the bottom, which can be conveniently used as an impromptu ramp allowing you to target it's upper.
101* The ''VideoGame/DonkeyKongCountry'' series has a few examples.
102** ''VideoGame/DonkeyKongCountry1'':
103*** Boss Dumb Drum is an animated iron barrel that hovers above the top border of the screen and spits {{Mook}}s relentlessly. Once in a while, it descends to try to squash Donkey and Diddy. The player just has to move out of the way, because it eventually breaks itself doing that. If Drum only released enemies and kept itself afloat, they would be unable to win. (In the UsefulNotes/GameBoyAdvance remake, Drum doesn't damage itself -- instead, TNT barrels appear after defeating a wave of enemies, which the Kongs must pick up and throw at the boss.)
104*** King K. Rool can only be hurt by [[GoombaStomp jumping on his head]]. However, you can't jump on his head because [[TheSpiny his crown is too pointy]]. So naturally, his main method of attack is to [[WeaponizedHeadgear take it off and throw it at you like a boomerang]], leaving his head exposed for the duration.
105** ''VideoGame/DonkeyKongCountry2DiddysKongQuest'':
106*** The player would be unable to pass beyond the first boss, Krow, if he didn't throw his own eggs at you so you can pick them up to throw back at him.
107*** K. Rool shoots spiked cannonballs at the player, but will sometimes shoot out an ordinary cannonball which can be thrown back at him to jam his gun. ''Nine times''. (Ten if you count the TrueFinalBoss).
108** ''VideoGame/DonkeyKongCountry3DixieKongsDoubleTrouble'':
109*** Belcha spits out barrels containing Knik-Knaks (beetle enemies) at the Kongs. Tossing Knik-Knaks into Belcha's mouth causes him to burp so heavily he pushes himself back towards the edge of the platform. If he didn't spit barrels, Belcha would inevitably push the Kongs off their side of the platform.
110*** Kaos has blades spinning out from its body that do nothing except provide platforms to reach the weak point -- its head.
111*** If Barbos didn't send out minions or launch homing missiles at you, you'd have no way to damage her shield.
112*** K. Rool gets even dumber than before, as his battle overlaps with BossArenaIdiocy: you can only damage him with barrels, which are dropped into the arena from levers which become available as he attacks. ''Twice'' in the same game.
113** ''VideoGame/DonkeyKong64'':
114*** Army Dillo would be undefeatable if he didn't reveal his face [[IShallTauntYou to laugh at Donkey Kong]] while letting DK throw [=TNT=] barrels at him.
115*** When fighting King K. Rool with Tiny Kong, he will repeatedly [[GroundPound butt-slam]] the arena to cause shockwaves. Eventually, his butt gets too sore to keep doing it and he moans in pain for a while, leaving him wide open to attack.
116** ''VideoGame/DonkeyKongCountryReturns'': Stu, Colonel Pluck and Tiki Tong all share an attack that consists of attempting to stomp Donkey and Diddy. The problem for them is that this move gives the Kongs a chance to attack them in turn.
117** ''VideoGame/DonkeyKongCountryTropicalFreeze'': Skowl and Lord Fredrik often attack the Kongs by sending mooks at them. But since the game heavily employs ThrowTheMookAtThem, the Kongs can grab one of them and then wait until the bosses are close enough to land a hit onto them.
118* ''Franchise/{{Doom}}'':
119** At the end of the first ''VideoGame/{{Doom}}'', where you face two Barons of Hell, there is a bug in the game where there is an attack that will cause a Baron to think the attacker is... himself. If you've already killed the other one, you can just stop and watch as he proceeds to claw himself, ''and'' cry out in pain over the attacks, until he dies and you win. It is hilarious when it happens.
120** ''VideoGame/Doom3'': The Cyberdemon can ''only'' be harmed by the Soul Cube. The Soul Cube can ''only'' be "charged" for its attacks by killing enemies, so if you fought the Cyberdemon one-on-one, he'd be unstoppable. Luckily, he summons weak minions that constantly attack you, enabling you to charge up your Soul Cube again and again.[[note]]That actually becomes a problem if the player's running a "corpse stay" mod that negates EverythingFades, as while the bodies are present the demons won't respawn to refill the cube with. The only solutions are to use the console to spawn in demons, or use a second mod that allows the Cyberdemon to be harmed by conventional weaponry.[[/note]]
121* ''VideoGame/DustyRagingFist'' has the Krakken, a BackgroundBoss, who sends her CombatTentacles at you to the front as her main attack. You're only able to damage her tentacles, but after missing each swing, somehow the Krakken will have her limbs remaining on the ship you're on in an unsuccessful attempt to tilt it, leaving her vulnerable to attacks. You spend the whole fight tricking her into sticking her tentacles into the front until you defeat her.
122* In the tower level of ''VideoGame/DynamiteHeaddy'', Trouble Bruin can only be hurt when he moves himself toward you (as opposed to his other move, destroying a section of the tower). It's out of the player's control though.
123* Twinblade in ''VideoGame/{{Fable}}'' has an attack where he stabs the ground, usually when the player is standing right behind him, where he can actually be damaged. He's invulnerable at all other times.
124* Both bosses in World 1 and World 2 of ''VideoGame/FancyPantsAdventures'' suffer from this. The penguin is a BullfightBoss who will always get his horns/flippers stuck in the wall, allowing you to jump on him. The rabbit, on the other hand, cannot be defeated by jumping on him at all, yet he still jumps high and drops spiders on you, though a snail always drops with them which can be used to beat him. To make matters worse, kicking him after hitting him with a snail shell will make him almost immediately use the same move again (with several more spiders, admittedly).
125* ''Franchise/FinalFantasy'':
126** All four of the first bosses in ''[[VideoGame/FinalFantasyIV Final Fantasies IV]]-[[VideoGame/FinalFantasyVII VII]]'' are meant to get the player, who may be used to turn-based gameplay, used to the Active Time Battle system, especially the idea that the battle continues, and the boss continues to act, even if you don't, and that sometimes you'll need to wait.
127** The first boss of ''VideoGame/FinalFantasyVII'', Guard Scorpion, has a defensive mode where it counterattacks any attack with severe force, but otherwise takes no action. Now ordinarily, it would make sense not to remain in this mode the entire time. However, the encounter begins shortly after the party sets a bomb to blow up the reactor they're in, and the defensive mode would be far more effective at delaying their escape.
128** With regards to Whelk, the first boss in ''VideoGame/FinalFantasyVI'', [[SubvertedTrope staying in its shell for the entire battle doesn't make it invulnerable]], it merely takes a ''lot'' longer to destroy it. It's even possible to ignore the warning to not attack the shell since its [[ManaMeter MP]] is very low and healing the party is easy despite the powerful {{counterattack}}. You even get a [[BraggingRightsReward slightly more useful drop]] (A MP recovery item as opposed an HP one) if you kill the shell. Later on, you can pull a similar trick with a stronger PaletteSwap to get ''two'' of the items it drops.
129** As for the Wing Raptor in ''VideoGame/FinalFantasyV'', it's actually completely defeatable in guard mode, but it counterattacks viciously if attacked.
130* The first ''VideoGame/FearEffect'' have a couple of bosses guilty of this:
131** Madam Chen, in her demon form, is surrounded by a fiery force-field which bullets couldn't penetrate, as she summons skinless prostitutes to attack Hana. Skinless prostitutes that upon being killed, will drop paper dolls. Collecting the dolls and dropping them into the forcefield will neutralize it, allowing Hana to damage Madam Chen.
132** Hana's FinalBoss, Mr. Lam, also counts; he's completely invulnerable, and can release bolts of electricity at ground level that Hana must avoid. But his battle is also flanked by various imps which, upon being killed, will drop similar paper dolls, which can be burnt in pyres ''within the boss arena'' making Lam vulnerable to gunfire.
133* Some bosses in ''VideoGame/{{Fraxy}}'' will flip open to expose their weakpoints after some time, then close them again. Some attacks are also tuned to start when this happens, so watch out!
134* ''VideoGame/GearsOfWar3'':
135** The Lambent Berserker would be all but invincible if her ribcage didn't open and expose her glowing Imulsion core whenever she charges, which she does a lot.
136** In the downloadable campaign "RAAM's Shadow", General RAAM would be all but invulnerable if he would stop deploying his Kryll shield to attack the humans, instead relying on his blade (which the player can do during the segments where you play as him) or stalling until the Kryllstorm claimed them. In ''Gears of War'' (chronologically later), he smartens up and carries a Troika instead, retroactively eliminating that weakness.
137* The only reason you can beat the FinalBoss of ''VideoGame/{{Ghostrunner}}'' is because she keeps stabbing at you with CombatTentacles while you're standing right beside a generator. You can easily dodge her telegraphed attack and watch her get electrocuted four times without her taking the hint that she should stop this particular form of attack.
138* From the ''VideoGame/GhostsNGoblins'' series there's Sardius, the final boss of ''Super Ghouls 'N' Ghosts''. He can only hurt you with a BeamSpam attack [[BreathWeapon from his mouth]], and whenever he does so, he also creates magical platforms that Arthur can ride up to reach Sardius' weak spot, his head.
139* ''VideoGame/GodOfWarII'': Subverted in the Zeus battle. First, Zeus is giant and you can't directly attack him. However, he summons sirens that release a deadly shockwave when you kill them, which damages him. The other stage is Zeus shrinking and fighting Kratos straight up. After awhile, Zeus remembers that he's the freakin' king of the gods, and starts bombarding Kratos with an endless stream of lightning. Kratos has to trick him to beat him.
140* ''VideoGame/GoldenForce'' have a Krakken boss you fought on the seas, where it's vulnerable only in the [[EyeScream eye]]. But conveniently enough, said Krakken will have it's tentacles dangling on the water's surface constantly (rather than keeping them underwater) which allows you to jump on the tentacles, reach it's face, and attack its weak spot.
141* ''VideoGame/{{Gradius}}'': Many bosses in the series are only vulnerable when they are about to fire a particular weapon; if they would refrain from using that particular attack, the Vic Viper wouldn't be able to pierce their armour at all. Some specific examples:
142** In ''Gradius II'', the Crystal Core could render itself unbeatable just by wrapping its tentacles around its weak point. But it doesn't.
143** In ''Gradius Gaiden'', Kraken, the Stage 7 boss, could have made itself near-invulnerable if it kept its arms closed and never used its giant rock attack, which exposes the core barriers on its rear.
144* ''VideoGame/GuildWars2'': King Toad in the April's Fools' Day dungeon Super Adventure Box is defeated by first [[AttackItsWeakPoint smacking the jewel around its neck]] to loosen shards of gemstone and then dodging its regular attacks until it's preparing to do its devastating tongue lash attack, during which time it will... just sort of stand there with its mouth open... and tossing the gem down its throat, stunning the toad and enabling you to do damage. Rinse and repeat.
145* ''VideoGame/GunFuFighter'' has a [[HoppingMachine Leaping Mecha]] boss whose attacks alternates between using it's turrets, and jumping upwards to land on you. Except the latter attack will make it fall into a crumpled heap, disabling itself for a few seconds allowing you to shoot at it. The moment the boss gets back up, it ''will'' keep repeating the jumping move, until it's destroyed.
146* ''VideoGame/{{Gunsmoke}}'' (the arcade game, not the TV series) has an odd example: The first boss would be invincible if he would stay crouched down after losing a bar of health. Ditto for the last boss.
147* In ''VideoGame/HollowKnight''
148** Elder Baldurs are an enemy type that you are ''required'' to kill in the early game. Disregarding equipment upgrades you can't obtain until much later, your sole means of damaging them is the Vengeful Spirit spell, which is therefore an AbilityRequiredToProceed. However, even a full [[ManaMeter Soul Vessel]] won't let you cast it enough times to kill one of them. The way to replenish Soul in mid-combat is by performing melee attacks... which Elder Baldur {{No Sell}}s. However, it sometimes will [[MookMaker spit out a Baldur]] instead of acid, and those can be conveniently Nailed and converted to more Soul.
149** Uumuu is a giant jellyfish whose massive barrier protects its core. In the main story, you can't damage it until Quirrel destroys its barrier. In the BossRush rematch, however, Quirrel is not present. Instead, Uumuu gains one new attack, summoning the exploding jellyfish Ooma. You can then fling one of the Oomas towards Uumuu so the explosion destroys the barrier, allowing you to damage it.
150* Played with in ''VideoGame/HotlineMiami''. The second boss is a cleaver-wielding man who kills you instantly if you get close, but mostly keeps his distance. He occasionally lunges at you, which is easy to dodge, and eventually tosses his cleaver at you--it gets stuck in a wall, and he tries to pull it out while you're free to bash his skull open. [[spoiler:But in the epilogue you get to relive the battle from the boss's perspective. When the protagonist comes in, you can kill him simply by walking up to him and ending his life with a single cleaver slash, as opposed to engaging in overtly complex and suicidal tactics.]]
151* ''VideoGame/{{Iconoclasts}}'':
152** Kerthunk can [[SequentialBoss at first]] only be damaged when it throws its metal arm in the center of the screen, when it has another attack that doesn't leave it exposed.
153** The first phase of the battle with Chrome's helicopter has Tolo [[SarcasmMode helpfully]] throwing grenades at Robin... grenades that she can deflect into the copter's shield. The [[{{Mooks}} Attacker]] piloting the copter wisely scoops him up into the vehicle for phase two, though by this point it's vulnerable to regular stun-gunfire.
154* ''VideoGame/{{Iji}}'':
155** Asha can dodge absolutely anything, but thinks that dodging weak weapons is cowardly, even when he's about to die. As such, the basic shotgun is the only thing that will harm him -- and, indeed, kill him.
156** Iosa the Invincible is exposed only after you duck one of her attacks (granted, you only need to take advantage of this once) -- which she uses, even though she also has attacks that don't leave her exposed.
157** The final boss, in order to charge up his most powerful attack, chucks incredibly powerful blasts at you... which can be reflected. There is also the fact that he bothers fighting at all -- if he really wanted Iji dead for sure, he could just leave, as [[spoiler:an Alpha Strike is charging and will hit the complex just minutes from then. The worst ending reveals that it's a SecretTestOfCharacter to see if there's any ''point'' in sparing humanity -- of course, this being the worst ending, you've just failed.]]
158** In an inversion, other assassins will use a move more frequently if they have successfully damaged you with it, and avoid moves that you hurt them with.
159* ''VideoGame/{{Indivisible}}'': In the final fight with [[DestroyerDeity Kala]], she is invincible, but [[spoiler:is [[CastFromHitPoints draining her hit points with every attack]]]]. This is justified, and fitting with the theme of the game, though: [[spoiler:at this point, Ajna has learned to control her anger, and so [[SheatheYourSword only protects herself]]. Kala, on the other hand, is ''[[VillainousBreakdown absolutely furious]]'', and not thinking clearly]].
160* ''VideoGame/JakAndDaxter'':
161** ''VideoGame/JakAndDaxterThePrecursorLegacy'':
162*** The Dark Eco Plant spawns little mooks that, when killed, make it ''open its leaves so you can stand on them, while presenting you with its weak point''.
163*** Klaww would be nigh-invincible if he didn't do the move where he prepares the huge boulder.[[note]]You need to shoot him while he's preparing it so he'll drop it on his head.[[/note]]
164** ''VideoGame/JakIIRenegade'': In his second fight, Baron Praxis throws timed bombs that you can hit back to damage his mech.
165** ''VideoGame/Jak3Wastelander'':
166*** The Precursor robot can only be damaged if you shoot explosive mine carts (normally too high to shoot) to drop them on it, so it naturally creates pillars of rock that let you get high enough.
167*** To a lesser extent, this is present in both of Erol's fights. In the first one, he sends in explosive drones that you hit to send them back up towards him; in the second one, he uses a laser attack that exposes the weak point on the back of his mech's head.
168** ''VideoGame/JakAndDaxterTheLostFrontier'': Dark Skyheed will attempt to charge at you. If he collides with one of the many pillars in the area, he destroys the pillar but takes considerable damage and is stunned momentarily. This isn't necessary to damage him, unlike the other examples, but it does make the fight easier.
169* There is one boss from ''VideoGame/JustCause'' that decides to attack you with a {{Kill Sat}} that shoots missiles, while standing on the same narrow rooftop as you. To quote from WebAnimation/ZeroPunctuation, "Didn't even have to shoot the stupid bastard. Would have practically been assisted suicide."
170* ''Franchise/KingdomHearts'':
171** ''Videogame/KingdomHeartsI'' features a variation where the boss is practicing deliberate tactical suicide. In your first boss battle with [[WesternAnimation/{{Aladdin}} Jafar]], Jafar forces Genie to attack Sora and his party. Genie's attacks are weak (and usually preceded by Genie saying, "I'm sorry, Al!" or "Get out of the way!") and also frequently produce items that heal your party.
172** ''VideoGame/KingdomHeartsII'': At one point in Timeless River, Pete has the Cornerstone of Light and is riding away in Steamboat Willie. He would have gotten away if he didn't decide to attack Sora with garbage, letting him fling it back to stun Pete and free the Cornerstone.
173* Virtually all bosses and mini-bosses in the ''Franchise/{{Kirby}}'' series apply, having at least one attack that creates a star or other object for Kirby to inhale and exhale back at them.
174** The original ''VideoGame/KirbysDreamLand'' has an exception in Kaboola, since Kirby gets a permanent Sweet Potato/Mint Leaf power-up to fight with. The other bosses play this straight, especially since this is before Copy Abilities were introduced.
175** Meta Knight in ''VideoGame/KirbysAdventure'' does not have any projectiles, but instead gives Kirby a permanent Sword ability for their battle. Then again, he considers Kirby a WorthyOpponent.
176** ''VideoGame/KirbySuperStar'' has the Reactor Core from "Revenge of Meta Knight", which is invulnerable to everything except its own laser defense system, which will readily shoot at itself if you simply [[DeadlyDodging position Kirby in the right spot]].
177* The only way [[note]]technically subverted as the pistol can pierce its armor, but the ammo is so expensive and the weapon so powerful it's usually ignored.[[/note]] to hit Sakit's first form in ''VideoGame/LaMulana'' is when he extends his arm to the ground so you can climb on it and attack his face plate. The second form has his face plate break, and a jet of flame burst from the arm otherwise used for climbing.
178** Viy does this when he opens his eye for either of his attacks. It's actually the demons opening his eye, so the trope is zigzagged when he fires the laser as it not only destroys said demons, but also hurts his own tentactles.
179* In ''VideoGame/TheLegendOfNayutaBoundlessTrails'', all idol bosses are this. If they don't perform attacks that allow Nayuta to strike at their weakpoints, the fights would be impossible to win.
180* ''Franchise/TheLegendOfZelda'':
181** In ''[[VideoGame/TheLegendOfZeldaALinkToThePast A Link to the Past]]'', Agahnim has three attacks but only one can be reflected back at him. If he never used it, he could have succeeded in taking over Hyrule. For extra insult to injury, the Net works just as well as the Master Sword.
182** As Dethl's Agahnim form is a deliberate recreation of the fight from ''Link to the Past'', this also holds true in ''[[VideoGame/TheLegendOfZeldaLinksAwakening Link's Awakening]]''.
183** ''[[VideoGame/TheLegendOfZeldaOcarinaOfTime Ocarina of Time]]'' has a lot of bosses that do this:
184*** King Dodongo could just keep rolling and not spit fire so Link can't throw bombs in its mouth.
185*** Volvagia could just fly around and attack Link with fire and falling boulders, instead of going underground and exposing himself a la Whack-a-Mole.
186*** Morpha could stay underwater and not make itself an obvious target for the Longshot.
187*** Koume and Kotake are a tandem TennisBoss--each witch's reflected spells can only hurt the ''other'' one. If one of them simply left the room, the remaining one would be invincible. Or they could stay on opposite sides of Link when he's reflecting their magic spells.
188*** Almost every fight with Ganondorf has him shooting energy balls that he and Link end up smacking back and forth, marking the series' proud tradition of the TennisBoss.
189** The titular FinalBoss from ''[[VideoGame/TheLegendOfZeldaMajorasMask Majora's Mask]] does this a few times. Most notably is the fact that before the fight begins it literally hands the game's ultimate InfinityPlusOneSword over to Link completely willingly which makes the battle a complete joke if used. In the fight itself, Majora spams a beam at Link in its Mask phase which Link can deflect with his mirror shield to knock Majora out of the sky in order to leave the mask vulnerable to normal attacks after.
190** Molgera from ''[[VideoGame/TheLegendOfZeldaTheWindWaker Wind Waker]]'' sticks its tongue out and then just sits there.
191** Gohdan from the same game will also gladly sneeze out bombs and arrows, should you happen to run out of either. In his case, however, it's justified as Gohdan is meant to test Link's ''skill'', not however much ammo he has.
192** ''[[VideoGame/TheLegendOfZeldaOracleGames Oracle of Seasons]]'':
193*** Agahnim can be killed by deflecting his projectiles just like before, but since he's vulnerable to the sword directly this time, it's not the most efficient method.
194*** Onox, the final boss, falls into this in his third phase: he's a flying dragon, and his sole weak spot is his forehead that is too far away for Link to hit from the ground with his sword. Similar to Sigma from ''VideoGame/MegaManX'', he makes the forehead vulnerable by slamming his claws into the ground, when he could use his hard-to-dodge flame attack instead.
195** Phantom Ganon in ''[[VideoGame/TheLegendOfZeldaTheWindWaker The Wind Waker]]'' can only be stunned by reflecting his blue energy ball back at him. But he has other attacks that Link can't deflect, including homing red energy balls. Alas, by the time he's learned to just stick to the unexploitable attacks (after at least '''eight times''' of fighting him), Link already has a weapon capable of one-shotting him.
196** ''[[VideoGame/TheLegendOfZeldaTwilightPrincess Twilight Princess]]'':
197*** It's not the boss' fault, but if Ook didn't conveniently show up to provide Link with Bomblings, Diababa would be unbeatable.
198*** If Stallord's head would bother to fly ''above'' the arena's highest Spinner tracks, Link would be unable to reach him.
199*** If Blizzeta remained in the air during the second phase of her fight, she would remain out of reach of Link's Ball and Chain, and could just crush him with ice blocks.
200** The many-armed sword-slinging robot Koloktos in ''[[VideoGame/TheLegendOfZeldaSkywardSword Skyward Sword]]'' can only be damaged by his own swords. He'd be unbeatable if he didn't keep swinging his swords into the floor so violently that he gets stuck, allowing you to rip his arms off, take one of his swords, and beat him up with it.
201** ''VideoGame/TheLegendOfZeldaSpiritTracks'':
202*** Stagnox throws explosive slugs at you, which you must use to damage his armor (since you don't have bombs yet).
203*** Fraaz would be invincible if he stuck to either fire or ice, but instead he alternates, allowing you to [[ElementalRockPaperScissors damage him by boomeranging his previous breath attack into him]]. Oddly, he ''is'' smart enough to smash the fire/ice torches in the room after a couple of rounds.
204*** Even though Phytops spends the entire pre-fight climbing sequence with its head underwater, it also spends most of the fight itself with its head ''out of'' the water, leaving its weak point exposed.
205*** Cragma has a recurring tendency to rain down volcanic boulders on you if you attack its weak point, which it exposes every so often by lifting itself out of the lava to store up an attack. The boulders can then be smashed apart into platforms and used to reach the minecarts you use to pelt the boss with arrows.
206*** Skeldritch must be disassembled by catapulting his own boulders back at him. He also has a laser-beam attack; if he only used that, Link would be unable to harm him.
207*** To hit Byrne, you have to dodge his grapple-arm and have Zelda yank him to the ground with it. His other attacks don't make him vulnerable, but he keeps using the grappler anyway.
208** The Knucklemaster in ''[[VideoGame/TheLegendOfZeldaALinkBetweenWorlds A Link Between Worlds]]'' is only vulnerable when you avoid its punching attack, [[BullfightBoss causing it to smash into the wall]] and reveal its weak point. If it would stick to the attacks where it slams the floor, it would be impossible to kill.
209** Every officer and boss in ''VideoGame/HyruleWarriors''. Less so in fights with officers where you can also just beat them in a straight up fight, with the Tactical Suicide weakpoint smashes only serving to speed the process up. The bosses play it completely straight, being vulnerable to an item but only before or after certain attacks in their arsenal. Notably, the bosses are hated for the fact that unlike other examples of this trope, they can go for long periods of time before using said attacks. Where other examples of this trope note that a boss would be unbeatable if they didn't commit Tactical Suicide, that's a very real possibility in this game.
210*** King Dodongo must be fed bombs to expose the weakpoint, but only when it's charging up his mega fire ball attack.
211*** Gohma must be shot [[GoForTheEye in the eye]], but unlike other Gohmas in the Zelda series, this one closes his eye before the arrow reaches it. So you have to wait until it starts [[EyeBeam firing lasers]], causing its eye to turn blue and bug out.
212*** Manhandla's stalks must be cut off with the boomerang, but only once it's shot seeds out of its mouths.
213*** Argorok sticks his tail out and it starts glowing blue whenever he shoots fire or gusts of wind, leaving you free to hookshot him out of the sky. Unlike the others this happens often enough it's hard to notice that he's an example of this, but he does have a few attacks that don't leave his tail vulnerable.
214*** Ganon has attacks from all the previous bosses. The very same attacks that made weakpoints vulnerable on said bosses. In his second phase he ''[[GameplayAndStorySegregation should]]'' be vulnerable all the time. And yet, he's only vulnerable to the arrows after he tries to rush you down, which is only one of his attacks.
215** ''Hyrule Warriors Legends'' doesn't have much smarter bosses; [[VideoGame/TheLegendOfZeldaTheWindWaker the Helmaroc King]] must be smashed with the hammer after it pecks into the ground just like the game he came from. And of course, Phantom Ganon; his first phase has you deflecting magic like so many bosses before him, even [[VideoGame/TheLegendOfZeldaOcarinaOfTime him]][[VideoGame/TheLegendOfZeldaTheWindWaker self]], and thus you have to deflect it with your sword like usual. The second phase [[AvertedTrope averts this]], forcing you to go behind him to attack instead.
216** ''VideoGame/TheLegendOfZeldaBreathOfTheWild'' plays with the trope, depending on the boss in question:
217*** Subverted with Thunderblight Ganon. The boss will perpetually spam its magnetic lightning attack, until the player figures out to levitate its magnetized beams back at it. After getting hit once by its own lightning, Thunderblight will cease to use the attack.
218*** It's also subverted with Hinoxes. Their [[{{Cyclops}} one eye]] is a [[AttackItsWeakPoint weak point]], and hitting them in the eye stuns them. However, once they reach half health, they will start covering their eye with a hand if you aim an arrow there, making it harder to exploit the weakness.
219*** Played straight, however, with Moldugas. The easiest way to defeat them is climb onto a platform, attract them with a remote bomb, and [[FeedItABomb detonate the bomb when they get close]]. This leaves them incapacitated for a while, allowing you to whale on them until they regain consciousness. You then repeat the process until they die, as they never seem to learn to avoid the remote bombs. Possibly justified in that they appear to just be wild animals without much intelligence.
220* Justified in ''VideoGame/LennasInception'', in that the Archangel bosses are mentally children and thus not very good at defending themselves. A flashback shows Archangel ??? trying to teach Crabaddon that their weak points are in their claws and mouth, which means they should ''not'' open their claws and mouth when fighting the hero, but Crabaddon just keeps forgetting...
221* ''VideoGame/LibraryOfRuina'' has an interesting case with the Fragment of the Universe boss, where the "tactical suicide" is actually a viable strategy if you don't counter it properly. The boss has two attacks: the weaker ''Penetrate'', and the stronger ''Echoes from the Beyond''. The "tactical suicidal" part comes from the fact that being hit by the former gives you the "Enlightenment" card, which makes you completely immune to the latter as long as you have it in your hand... but also makes it so that the former inflicts much more Stagger damage if it connects. You can play "Enlightenment" against ''Penetrate'' to neutralize it, but that removes your immunity against ''Echoes''.
222* Warg Rider Captain in ''VideoGame/TheLordOfTheRingsTheTwoTowers'' can only be damaged when his Warg rises on hind legs to taunt you. Given that he’s smart enough to speak Common Tongue (the arrival of his flunkies is signalled by him saying "Finally! Kill this one!"), one would think he would’ve learned not to do that after the first time.
223* In ''VideoGame/MalditaCastilla'', Crazy Quixote is invulnerable except when he jumps through the burning ceiling and temporarily catches on fire. His attack pattern is a fixed cycle, but if he left out that one move, he'd be unstoppable.
224* In ''VideoGame/MassEffect3'', the Reaper on Rannoch could just ignore your presence, since none of your weapons can harm it, or if it absolutely had to kill you, it could just walk over and squish you like a bug. Instead, for no perceptible reason, this ancient and highly intelligent machine tries to kill you with its beam weapon, exposing its only vulnerable part and allowing you to direct the quarian fleet into precision-striking it from orbit.
225* ''VideoGame/MediEvil2'':
226** The [[DinosaursAreDragons Tyrannosaurus Wrecks]] has an attack where he simply stands perfectly still and summons two baby dinosaurs to attack you. He also makes the [[AttackItsWeakpoint weakpoint]] behind his head [[NoticeThis incredibly obvious]], giving Dan the cue to run up his tail, along his spine, and attack it.
227** The Count suffers from both this and BossArenaIdiocy; he starts the fight using attacks that can be [[HoistByHisOwnPetard reflected back at him]] with mirrors, before switching to full-on BossArenaIdiocy (you have to use the mirrors to burn him with sunlight).
228** [[UsefulNotes/JackTheRipper The Ripper]] will sometimes stop attacking Dan in order to attack Kiya instead. This is the only time Dan can damage him.
229** When fighting Palethorn's Cruiser, the only time it can be damaged is when it flies past firing missiles, allowing Dan to get behind it and AttackItsWeakPoint. If Palethorn only used his machinegun attack (which lets him stay at one end of the arena), he'd be unbeatable.
230* ''Franchise/MegaMan'':
231** Several bosses in ''VideoGame/MegaManLegends'' are guilty of this - and most of them are piloted by, guess who, [[GoldfishPoopGang the Bonnes]]. Teisel's Marlwolf hurls powerful homing blasts, but every so often he'll turn away and open up a small hatch where the armor is thinner. His Servbots use it to lob hovering explosives; judging by Teisel's repeated howls of [[LargeHam CLOSE THE HATCH!!]], it just doesn't occur to them not to.
232** In ''VideoGame/MegaManX'', Wolf Sigma, the final boss (Sigma fused with a canine armor), keeps slamming his hands onto the ground. They can be used as platforms. If only he didn't bring them up to head level while X was standing on them, he wouldn't be asking for a Rolling Shield to the face!
233** In ''VideoGame/MegaManX5'', if you take too long fighting Maverick Zero, he'll pull out his most notorious move: Genmu Zero, a slash that covers the whole screen, kills you on impact, and will be repeated endlessly until it connects. There's no obvious reason he bothers using anything else.
234** In the final fight of ''VideoGame/MegaManZero'', Dr. Weil can only be hit when his core is exposed to attack. If he waited the two minutes without attacking, he'd be able to destroy Area Zero without Zero messing up his plans. Then again, he is a vengeful, hateful psychopath and touching down on Area Zero would destroy him too, so he's probably getting what little satisfaction he can get in seeing Zero die before him before he gets turned into a giant crater. Also, the final boss of the first game, Copy X. He destroys the majority of the floor with a set of spiked pillars that remain there for you to wall-jump off when he uses [[OneWingedAngel Seraph Armor]]. Without them, Zero wouldn't be able to hit him and Copy X could just laser-spam him to death. And sure, he has a few tricks like being able to fire restraining rings that can and will cause a cheap kill into a BottomlessPit, and his DesperationAttack if fought at A Rank or higher has him command those pillars to strike the small floor area, but he's just making things needlessly complicated for himself.
235** Gate, one of the last bosses of ''VideoGame/MegaManX6'', is normally completely invincible to your attacks, but to attack you he throws energy balls that can have one of several different effects. When you destroy these, their pieces scatter in six directions, and they can hit Gate to damage him. At low enough health, he will eventually start using a purple slash that can temporarily destroy the platforms you have to stand on, but he won't stop throwing energy balls. Granted, even the scattered pieces can still hurt and kill ''you'' if the timing's messed up, but like Copy-X Gate is making this much more difficult than it needs to be.
236** In ''VideoGame/MegaManX7'', you fight Snipe Anteator on top of a large pipe. Something is stopping you from going too far left or right -- but the Maverick can go all the way around to the underside of the pipe any time he wants. You can't hit him there, but his Sniper Missiles can still hit you. He could finish you off in total safety if he just stayed down there.
237* The very first boss of ''VideoGame/TheMessenger2018'', the Leaf Monster, is invincible while its leaves are still on its body. Its one and only attack is to take them off and throw them at you, [[{{Pun}} leav]]-ing it vulnerable. If it ever gave up on doing that and decided to just try punching you or something, you'd have no chance against it. Then, as if it wasn't stupid enough already, after you do some damage to it, it decides to move up to the top of the screen and rain leaves down on you from above. If it just stayed up there where you can't reach it, again you'd have no chance to win, but it always comes back down eventually.
238* ''VideoGame/MetalSlug 3'' has the final boss Rootmars. For an alien mastermind with a brain as big as a tank, it doesn't think to just toss away the Slug it's holding in its claw, '''even as you climb into it and blast away at its exposed brain'''. This makes the battle that much easier.
239* ''Franchise/{{Metroid}}'':
240** If Kraid would [[AttackItsWeakPoint keep his mouth shut]], he would be invulnerable. Justified in that he must be deliberately provoked into doing this by shooting him in the eyes, making him roar in pain. (In the first game he doesn't have a specific weak point and Samus can shoot him anywhere.)
241** Specific to ''VideoGame/SuperMetroid'':
242*** If Phantoon would stay phased out and shooting at Samus instead of periodically materializing in the middle of the arena, he'd be untouchable. Though Phantoon may not be able to stay phased permanently –- it may be like how whales have to surface every so often to breathe; they'd never get harpooned if they just stayed deep underwater, but it isn't possible.
243*** Spore Spawn would be invincible if it never opened to reveal its vulnerable insides. Justified in that this creature probably isn’t sentient.
244*** If Crocomire never opened his mouth to roar, he would be untouchable. But he could also possibly qualify as a "dumb animal" driven solely by instinct.
245** If the eponymous boss in ''VideoGame/MetroidPrime'' didn't squirt out pools of pure Phazon, Samus wouldn’t be able to use the only weapon that works against it. Justified in that scanning it reveals that it's not exactly a decision: the boss has to expel it as a waste product.
246** In ''VideoGame/MetroidPrime2Echoes'', Metroid Prime is back as the final boss, Dark Samus, and is still only vulnerable to Phazon -- which it shoots regularly at Samus, who can absorb and weaponize it for herself. Apparently it didn't learn from its mistakes. Justified again as scanning Dark Samus reveals that it's dangerous unstable from absorbing too much Phazon, and ''has'' to expel it to survive.
247** Mogenar from ''VideoGame/MetroidPrime3Corruption'' can only be damaged by using the Hyper Beam to destroy the sockets on his body... which means you have to blow up the red orbs inside the sockets first... of a boss whose tactical stupidity is resorting to the charge attack that lets you shoot the orb on its back.
248* All of the monsters in ''VideoGame/MonsterHunter'' series can be struck at any time, but some of them do things that aren't terribly bright and leave them especially open for abuse.
249** ''[[VideoGame/MonsterHunterFreedom2 Monster Hunter Freedom Unite]]'': The Nargacuga has a tail slam that, while powerful, will lodge its tail spikes in the ground for a good amount of time, leaving it far more vulnerable then its other attacks do.
250** ''VideoGame/MonsterHunter3Tri'':
251*** The Agnaktor will commonly dig into the ground to attack you. The drawback is that its hard magma armor melts once it's done, making it prone to breaking. The Glacial Agnaktor has the opposite problem: its ice melts due to prolonged exposure to the elements, so it digs to restore the makeshift armor.
252*** Ceadeus and Goldbeard Ceadeus both have this problem regarding the Dragonator, a super powerful weapon situated in only one point of the arena, meaning you have to time activating it perfectly for whenever it's in range. Or you would if it didn't drop everything it was doing, swim to the opposite side and then swim all the way to the side with the Dragonator and wait there for a while for the Dragonator to attack it directly in the face.
253** ''VideoGame/MonsterHunterPortable3rd'':
254*** The Duramboros occasionally does a huge spinning leap into the air and comes smashing down (which hurts about as much as you'd expect from having a 18 foot tall dinosaur land on you), but it takes several seconds to get up, leaving you free to attack its tail, which is a weak point and usually too high in the air to get a clear shot at otherwise.
255*** Zinogre has to go through a lengthy charging animation when it gets depowered, calling in Fulgurbugs to restore its electrified state. This leaves Hunters a significant opening to wail on its head, which may interrupt its charging for a time, or, as of ''Iceborne'', smack it in the face a few times with the Clutch Claw and drive it into a wall with a Flinch Shot. It also does a back-first body slam move, which, while extremely damaging, causes it to get stuck in the ground for some time.
256** ''VideoGame/MonsterHunter4'': Zamtrios, who in response to having its ice armor broken, will inflate itself like a balloon and start trying to sluggishly bounce and roll on you with its bloated body, which is far slower then its standard mode of attack. Its whole body becomes a weak spot during this time, plus it'll occasionally break through the ice and get stuck if it bounces around too much, leaving it even more open for abuse then usual. This is less of a problem for [[UndergroundMonkey Tigerstripe Zamtrios]], who can inflate and deflate at will, and is very aggressive while inflated.
257** ''VideoGame/MonsterHunterGenerations'': The Astalos can shoot a devastating thunder beam with its [[BewareMyStingerTail paralytic, shear-like tail.]] However, it slams its tail on the ground to do this, leaving it open to be wailed on. Said tail is also its second biggest [[AttackItsWeakPoint weak point]] and can be [[SubsystemDamage severed.]]
258** ''VideoGame/MonsterHunterWorld Iceborne'':
259*** Safi'jiiva has a special FantasticNuke attack called the "Sapphire Star of the Emperor", which can only be avoided by hiding behind rocks in the arena a la Fatalis. The rocks are indestructible the first time it does this, but they get destroyed by the attack on subsequent times. Fortunately, it occasionally blasts a laser beam at the roof of the arena, sending flaming boulders down which can be used to avoid the attack when it happens again, combining this trope with BossArenaIdiocy.
260*** While it is [[ThatOneAttack highly destructive (even more so once it's in Hellfire Mode)]], the''Iceborne'' incarnation of Fatalis would be a lot harder if it didn't use its "cone breath" attack, since it leaves a significant opening to pummel its [[AttackItsWeakPoint head.]]
261** ''VideoGame/MonsterHunterRise'': Thunder Serpent Narwa is a floating, lightning-powered dragon whose magnetic field causes massive amounts of ChunkyUpdraft whenever it uses any of its stronger attacks. Not only does this keep providing players with cover and platforms to dodge said strong attacks and attack its weak points more easily, the battle takes place in an ancient fortress and the updraft often unearthes ''fully functional siege weapons'', up to and including a Dragonator. If it didn't use any of those moves and stuck to the more basic ones, it could probably defeat any hunter simply through sheer attrition thanks to [[DamageSpongeBoss its utterly massive health pool]].
262* Early on in ''VideoGame/NicktoonsUnite'', you meet ghost prison guards who are intangible except when attacking. There's also similar fighters later on, but [[WesternAnimation/DannyPhantom Danny]] gets the ability to turn intangible himself and is therefore able to hurt intangible opponents.
263* ''VideoGame/NieR'''s [[AIIsACrapshoot Defense System Gepetto]], robotic guardian of the Junkyard, has the following attacks: fire a continuous laser stream from each fingertip, fire homing missiles, slam [[GiantHandsOfDoom its floating hands]] on the arena, spawn endless robot drones with lightning and magic bullet attacks, a ''gigantic'' mouth laser, and... spawn bombs. Not ''armed'' bombs, just bombs. Which just sit there until you grab one and toss it. And it spawns them immediately before ''opening its mouth to charge up for the giant laser''. Even [[DeadpanSnarker Grimoire Weiss]] cracks [[{{Pun}} wise]] at "such an obvious weak point."
264* If Fire Cracker (an armored truck) from ''VideoGame/NightStriker'' didn't open up its rear to [[MacrossMissileMassacre unleash a barrage of homing missiles]], the [[FlyingCar Inter Gray]] would never be able to hurt it by shooting its unarmored insides.
265* The ''VideoGame/NinjaGaiden'' remakes usually make you work for your attack opportunities, but one notable example in the first game -- Marbus -- fights by flooding the area with some mooks and then taking potshots at you. While you can, if you're lucky, knock him out of the air on your own, he also tries to swoop down at you, invariably giving you a chance to beat the stuffing out of him.
266* ''VideoGame/NoituLove'' lives and breathes this trope, with nearly every boss in the game opening themselves to attack or have a [[LampshadeHanging explicitly labeled weak point]]. Actually, all of the games made by the author revel in this trope. As seen [[https://www.youtube.com/watch?v=Y9Gj2aGJKyI&feature=channel in this review of all his games]].
267* In ''VideoGame/NoMoreHeroes'' and to a certain extent the sequels, if you think about it. All of the bosses in the first game are actually completely invincible or extremely evasive most of the time. There are usually only small windows of opportunity where the boss is actually vulnerable to your attacks; learning when these windows appear and exploiting them is almost the only way to win the game. In ''VideoGame/NoMoreHeroes2DesperateStruggle'' and ''VideoGame/NoMoreHeroesIII'', you can attack whenever for most bosses, but attacking at the wrong time can cause you to get hit.
268* ''VideoGame/{{Okami}}'':
269** Orochi is only vulnerable after you get his various heads drunk and you can only truly damage him after knocking out all eight of his heads. To get him drunk, you draw the sake below him into his mouth when he roars, and he roars after you thwart his attacks. He cannot learn to avoid this strategy all '''three''' times he is fought. Nearly all the other bosses in ''Okami'' fit this trope as well. At least mythology establishes that Orochi is an alcoholic, justifying his inability to stop drinking sake.
270** Also, Ninetails. In the first part of the battle, drawing lightning to her sword when she lifts it up for a charged attack is the only way to make her vulnerable.
271** When doing a ranged attack, Blight throws ''all'' his swords at you, including the one that the Blight entity is actually within, and it's very visually distinct from the rest because it is glowing blue. If Blight stuck to just melee and dash attacks, it wouldn't be ''fine'' - Amaterasu has Blight's KryptoniteFactor, namely time-slow - but it'd certainly reduce the number of opportunities to power-slash the sword out of the sky and wail on it.
272** Armoured Dokuro from ''VideoGame/{{Okamiden}}'', an enemy which isn't technically a boss but functions very much like one, is ''supposed'' to be this. Its main vulnerability is that upon spitting a fire, ice or lightning ball at you, you can power slash it back into the big skeleton's face and knock it unconscious for a short time, letting you shred its normally concealed health gem. The downside is that it randomly selects attacks, so it can take an agonisingly long time to get around to spitting the actual fireball - and the first one goes to removing its helmet. The end result is usually the player shouting at the DS to demand it commit tactical suicide sometime today.
273* Weepers from ''VideoGame/ThePersistence'' can't be damaged because of their ability to teleport whenever anyone or anything comes close to them. If they didn't throw around deadly cries at you, they wouldn't be vulnerable enough to be beaten to death.
274* ''VideoGame/{{Phoenotopia}}'' has several:
275** The Great Sand Drake is impervious to attacks from the outside (when not stunned), and can only be harmed/stunned by [[FeedItABomb feeding it a bomb]] when it tries to bite you.
276** Both of the golem bosses charge at you after a while, ramming into the wall and becoming temporarily disabled and open to attack. Before they turn back on, you can push them over a trapdoor with repeated hits, and then open the trapdoor to drop them into a pit. (The second one makes this harder by covering the floor with bombs as it charges, though.)
277** The Kobold boss protects itself with a force field most of the time, but has to open it up to charge its death ball attack. It can be stunned, dropping the force field entirely, by throwing a javelin into its chest while it's doing so. Granted, its other attacks are easy to dodge, whereas this one is [[ThatOneAttack unavoidable and about twice as powerful as the rest]].
278* ''VideoGame/PhoenotopiaAwakening'':
279** The Wrecker robot Thomas sics on you [[spoiler: and its DegradedBoss variant in the Scorched Lands]] can only be harmed by batting its electric stun grenade back at it.
280** The [[OptionalBoss Century Toad]] has a hard shell around its head and is nearly always facing towards you. Attacking its softer body is technically possible, but it's a crapshoot. So the main method of causing damage to it is feeding it bombs when it tries to eat you.
281* ''VideoGame/PlantsVsZombies'': Dr. Zomboss can only be attacked by your plants when he lowers the Zombot's head to use his fire/ice ball attack, and is invulnerable at all other times. Not helped by him keeping the Zombot's head down for an unnecessarily long time both before and after the actual attack.
282* ''Franchise/{{Pokemon}}'':
283** ''VideoGame/PokemonGoldAndSilver:'' Jasmine's Steelix knows the move Sunny Day, which summons harsh sunlight. Sunlight reduces the power of Water moves, which Steelix is weak to... but also ''increases'' the power of Fire attacks, which ''all of her Pokémon are weak to''. And no, she doesn't have a Fire move on any of her team members.
284** ''VideoGame/PokemonFireRedAndLeafGreen:'' Sometimes the Champion Blue's Blastoise would use Rain Dance...even when the opponent right at the field is an electric type Pokémon that knows Thunder, a superpowerful electric type attack with low accuracy that becomes maximum whenever Rain Dance is activated.
285* ''VideoGame/{{Portal}}'' [[JustifiedTrope justifies]]/[[LampshadeHanging lampshades]] this trope. [[TimeLimitBoss The boss fight]] starts once you [[StupidityIsTheOnlyOption destroy GLaDOS's morality core]], which [[RestrainingBolt prevents her from trying to kill you]] with [[DeadlyGas neurotoxin]]. [=GLaDOS=] notes that a side effect of the destruction is that she can't turn her self-defense rocket turret off anymore. The turret, of course, is necessary to beat her, by redirecting the rockets through portals.
286* ''VideoGame/{{Portal 2}}'' [[DefiedTrope defies]] and [[DoubleSubversion double subverts]] the trope while also justifying it and hanging lampshades:
287** When you confront [=GLaDOS=] again, she's taken care to keep you from using the same tactics to beat her as in the first game. However, unbeknownst to her, you've already sabotaged her defenses, and the mainframe helpfully provides a [[TakeAThirdOption third option]] to the ensuing stalemate.
288** At the start of the final battle, [[spoiler:Wheatley]] informs you that he has analyzed the first game's climax and set up an arena with no portal surfaces, and thus no way to fight him while the neurotoxin kills you. However, he took the extra step of equipping himself with bombs (and reconfigurable shields so you can't hit him with the bombs), but [[BossArenaIdiocy forgot about the tube of Conversion Gel running through the room]]. One broken tube later, and you gain the means with which to defeat him. What's more, after you hit him with a bomb for the first time, he tries to stop using them but discovers that the mechanism for doing so has been damaged. But that’s not to say he made that much of a mistake, as he did make sure [[spoiler: to rig more bombs to the Stalemate Button in the event that he lost.]]
289* ''VideoGame/{{Psychonauts}}'':
290** The [[TankGoodness Brain Tank]] and [[{{Kaiju}} Kochamara]] bosses have the most blatant cases of this. The former's only weak spot is its underside, which it reveals for a ''looong'' time when rearing up for a charge attack, and the latter has an attack that drains its shield into a weak beam-thing that you can reflect back or dodge while blasting him.
291** If the Butcher never did a single vertical slash his arm would never get stuck in the ground, [[ColossusClimb giving a way to reach]] his [[AttackItsWeakPoint head]]. If [[spoiler:Raz's imagined version of his dad]] didn't throw spiked flaming bowling pins at you during the second fight you'd have no way to damage the Butcher in the second battle.
292* ''VideoGame/Psychonauts2'':
293** The Lady Luctopus has to be stunned by throwing the bombs she spits out into one of her suction cups. This is likely invoked, as gambling addictions [[AllegoricalCharacter (which is what she is)]] cause self-destructive behavior.
294** The Gluttonous Goats vomit up the ingredients needed to cook the dish that defeats them.
295** While the Truheltia Memonstria can be damaged via normal Psi-blasts, the best way to take out chunks of their health is to toss the exploding bulbs and bottle missiles back at them.
296* ''VideoGame/PunchOut'':
297** King Hippo. If he never opened his mouth, he'd literally be unbeatable. This doesn't apply in the Wii version, though, since hooking his stomach when he jabs provides Stars for Star Punches, which don't discriminate.
298** Everybody would have a better chance against Little Mac if they didn't have tells, stop to taunt, etc. Of course, they ''do'' recognize this in time for Title Defense mode, shoring up some of their vulnerable spots (and sometimes opening up whole new cans of this).
299* Mr. P from ''VideoGame/RagingJustice'' is a powerful boss when it comes to direct combat, and can even execute a SpinAttack where he moves in circles all over the area. The downside, however, is that after each spin Mr. P will become momentarily disorientated and stop to pant, exposing himself to a punch to the face. You beat him down until Mr. P regains his bearing, at which point he will... repeat his spinning move, each time, deliberately making himself vulnerable to attacks until you defeat him. He's also a RecurringBoss fought twice in-game, and he will repeat this attack both times for no reason.
300* If the Snagglebeast had figured out that it was too heavy to cross the bridge in ''[[VideoGame/RatchetAndClank2002 Ratchet & Clank]]'', it would have successfully finished off the duo.
301* The original ''VideoGame/Rayman1'' game has Mr. Sax, who is defeated by having Rayman punch his musical notes back towards him, and Skops, who launches a homing projectile that hones in on Rayman's fists; time your punches just right, and they'll fly into him instead.
302%%* Ditto in ''VideoGame/RType''.
303* The final boss in ''VideoGame/SecretOfMana'' attacks by turning into a fireball and diving into the party, during which he is invincible. But he also helpfully floats in front of the platform the party is standing on in between these attacks, only occasionally casting a spell, leaving the player free to slash him with the Mana Sword. Justified in that the boss isn't trying to kill ''you'', he's there to destroy [[spoiler: the Mana Fortress]]. You're just getting in the way when he gets close to try to destroy it.
304* ''VideoGame/RWBYGrimmEclipse'':
305** Both Ursa Minor and Ursa Major perform a variation of this. Their strongest attack is their ground slam, which sends out rocks in a circle around them and can deplete nearly all of your Aura if it connects. After performing this attack, Ursas get stunned, leaving themselves open for a combo or two. Now, exploiting this isn't necessary to defeat them, as you can still shoot and beat them up the old-fashioned way. That, however, will take much longer, since in a normal state, Ursas only receive 1/4 of your attacks' damage, plus guard automatically.
306* ''VideoGame/ShadowOfTheColossus'':
307** Almost every boss features this. If the second one didn't try to stomp you, you couldn't shoot its feet. If the bird didn't dive bomb you, you couldn't climb onto it, etc.
308* Parodied in ''VideoGame/TheSimpsonsGame'', where the Simpsons discover they're in a video game and use this knowledge to their advantage. Unfortunately, GenreSavvy comes back to bite them in one battle against aliens, when Bart points out that the UFO fires four times and exposes its weak point. The aliens immediately start to wonder why they do that, and resolve not to do so anymore, making them completely invulnerable as they rampage through Springfield. The Simpsons get annoyed enough that they go confront God about it.
309* The final boss in ''VideoGame/{{Skyblazer}}''. If he didn't try to punch you with his massive arm that you can use as a platform, you'd run out of magic far before he'd take enough damage to die.
310* ''VideoGame/{{Something}} series''
311** If Von Frog II didn't spawn his toad minions when you fought him in ''Something'', fighting him when his saucer rises higher into the air would be impossible.
312** If Monkey Kong didn't toss barrels at Luigi during the phase where Munchers are a prominent obstacle, he would be impossible to beat.
313** Von Frog II's machine in ''Something Else'' shoots stompable ball projectiles at Luigi. Like the toads the saucer spawns in ''Something'', Luigi can use them to reach the cockpit of the machine. If the projectiles weren't there, Von Toad II would be harder to beat.
314* ''Franchise/SonicTheHedgehog'': Many of Robotnik/Eggman's machines are like this, especially in the later games, where he has attacks that can hurt Sonic without going into harm's way, but he does so anyway. [[GameplayAndStorySegregation He has an IQ of 300]].
315** ''VideoGame/SonicTheHedgehog1'': Star Light Zone's boss cannot be hit with Sonic's standard jump height. Instead the only way to damage the boss is to take advantage of the spike bombs he drops, either by using the seesaws in the arena to fling the bombs back at Eggman or using them as a counterweight to launch Sonic higher than his jump normally allows and do direct damage.
316** ''VideoGame/SonicTheHedgehog2''
317*** The Oil Ocean boss has no reason to surface during the fight because Eggman's craft doesn't have any weapons directly attached to it. He attacks by launching a snake-like weapon with a sharp point on the end and a laser cannon that emerges from the oil. Yet he does, and gets smacked.
318*** The Metropolis Zone boss is another downplayed example. He ''can'' be hit while the orbs are still spinning erratically -- which can make the normally tedious fight much quicker -- but this is ''not'' an ideal strategy unless you have plenty of rings [[ThatOneLevel (good luck with that, by the way)]], because you will most likely get hit ''a lot,'' potentially turning it into a RushBoss rather than a tedious one.
319*** The final boss is a huge mecha with a small hit area, and a claw that completely covers it. If Robotnik simply walked instead of flying into the air (he is extremely vulnerable upon landing, where he leans forward), he would be much harder to hit, [[DownplayedTrope but not outright invincible.]] [[note]] It is possible to hit him while he's walking, but it's incredibly risky, because Sonic ''barely'' jumps high enough to do so, and you will hit his arms if you miss. [[/note]]
320** ''VideoGame/Sonic3AndKnuckles'' has a ton of these.
321*** The only way to damage the mid-boss of Carnival Night Zone is to let its floating spiked disc do all the work (you just have to expose its core by jumping at the main body). However, this is not your greatest worry in this fight - the spiked disc [[BossArenaUrgency is constantly destroying what little precious ground you have to stand on]]. If you time your hits wrong, the disc will rob you of your platforms before it destroys itself.
322*** The battle with Eggman in Carnival Night Zone comes down to being able to jump on him when he floats down to pick up the grounding orb he uses to generate a magnetic field (if he had a way to raise it back up to his ship without descending then he would be unstoppable). Once again, however, time proves to be your greatest adversary. The second act of Carnival Night is a MarathonLevel, and if you used up [[TimedMission too much of your allotted 10 minutes just getting to the boss]], you will lose a life. And this particular contraption of Eggman's gives Sonic some of the shortest, least frequent windows of opportunity to attack. Perhaps the good doctor had the right idea after all...
323*** The Flying Battery miniboss can only attack you with its oversized spiked flails. It doesn't try to think up a better way to deal with blue hedgehogs on its head other than bashing its own head in. Even assuming that it's not mechanically capable of low lateral swipes over the top of its head, it would still be able to win by doing nothing, thus keeping Sonic busy long enough for Robotnik to finish carrying out his evil plan.
324*** The last boss in Flying Battery will hang below the girder Sonic is standing on and slowly sidle side to side, igniting its flamethrower whenever Sonic is standing above it. The only time you can damage it is when he arbitrarily swings his machine above the girder for no reason other than to get hit.
325*** In the Lava Reef Zone boss fight, Eggman will continue to shoot spike balls while inclining the surface such that they roll into his own ship.
326*** The "Death Ball" boss in Death Egg act 2 can only be damaged by making it hit itself with the little weird spiked things it drops occasionally. Worse, there's only two ways to actually do that, and they both rely on a GravityScrew device Eggman installed in the arena for no apparent reason.
327*** The first phase of the TrueFinalBoss can only be won by tricking it into hitting itself with its own heat-seeking missiles.
328*** Silver Sonic/Metal Sonic/Mecha Sonic, the final boss if you're playing as Knuckles, suffers from this during the [[TurnsRed second phase.]] During this phase, he steps on the Master Emerald to regain his strength and turn Super, where he is invincible and has two attacks: He can charge at Knuckles on the ground, or launch energy orbs at him...which disables his super mode and forces him to get back on the Master Emerald to regain his power, during which he is vulnerable. If he kept attacking Knuckles by charging at him instead of launching energy orbs (which is actually ''easier'' to avoid than the charge attack), he would remain Super forever and be impossible to kill. This trope gets taken even further when he only has two hits left; he only uses an attack that causes eight rings to shoot out from all around him, and ''also'' disables his Super mode after he uses it. [[FridgeBrilliance (Though it might be because he is so banged up at that point that even the Master Emerald's healing factor is wearing off on him.)]]
329** ''VideoGame/SonicAdventure''
330*** The Egg Viper. During the first part of the fight, Eggman regularly uses a charged laser attack that requires him to hold still with the cockpit wide open for several seconds; most players will never even see him get to the actual attack. He later switches to a slightly more direct attack that involves shooting a very platform-like projectile that Sonic can easily ride straight back for the hit.
331*** Also, E-101 MKII. He simply bats away all your shots or strafes out of the way, but completely exposes himself every time he attempts to impale you. If he never charged, he'd be invincible.
332*** The Egg Hornet. If all Eggman ever did was shoot those little missiles at you, and never stuck himself in the ground trying to hit you with his ship, Sonic would wear out and eventually get hit.
333*** Chaos isn't immune: in his 2 form, he bounces around as a giant ball in one attack, and covers most of the floor for a couple of seconds in another. Why would he ever need to do that stretch-punch thing? Well... because if he didn't, he couldn't stop moving afterwards, giving Knuckles a chance to punch his brain.
334*** And his 4 form is worse; the only time he's vulnerable ''isn't even associated with an attack''. If he'd stop just surfacing and sitting there, Sonic, Tails, or Knuckles would eventually lose.
335*** Chaos 6 has this problem as well. If Eggman had stayed out of the fight and wasn't flying around dropping bombs, Chaos would have been impossible to beat (so really in this case it's a matter of NiceJobFixingItVillain since Chaos was doing just fine before Eggman thought he should also be involved).
336** The Egg Dealer from ''VideoGame/ShadowTheHedgehog'' is one of the most exemplary examples of this trope. It's a slot machine mech that Shadow can control by hitting its reels, causing it to attack itself with missiles, bombs, or even grant Shadow invincibility with Shadow Fever. The last one really makes you wonder why Eggman even programmed that in.
337** ''[[VideoGame/SonicTheHedgehog2006 Sonic 2006]]'':
338*** Silver is only vulnerable to attack whenever he jumps or grabs objects with psychokinesis to throw at you. Approaching him when he isn't open, and as the hedgehog himself says, "It's no use."
339*** Iblis. Silver has to kill it by reflecting its thrown rocks back at it, preferably before it manages to close the distance, [[BossArenaUrgency slam the platform three times and drop you to your death.]] Unfortunately, his AIRoulette makes it possible to reflect every rock he threw, and still die at the end because he spent so much time throwing shockwaves that you couldn't do anything with. This actually happened to [[{{Determinator}} Pokecapn]] in the infamous LetsPlay of the game.
340** In ''VideoGame/KnucklesChaotix'', what stage the player goes to next is determined by a roulette-like device with an image of each of the five stages on it. As each stage is complete, the images are replaced with 1, 2, 3, X, and 4; once all five stages are completed, the roulette is used to fight Metal Sonic. Whatever number the roulette lands on during the fight determines the attack, but landing on the X causes damage to Metal Sonic. To Metal Sonic's credit, when there's only one number and the X left, X causes the attack and the number defeats him, in case the player is able to time the roulette at that point.
341** ''VideoGame/SonicRush'': While the [[FinalBoss Ghost Titan]] from ''Sonic Rush Adventure'' is already one of the most frustrating bosses in all of Sonic history, he would literally be literally invincible if he'd just stop shooting and only punched.
342** ''VideoGame/SonicTheHedgehog4'': The final boss of ''Episode I'' at E.G.G. Station is a throwback to the final boss of ''Sonic 2'' with a twist: after taking a certain amount of damage, the electrics in Eggman's robot start to short out and he becomes untouchable directly. The only way to expose him is to fling his detachable spiked arms back to him with a homing attack as they float down after being fired (after which Eggman's entire machine will stall and give you a chance to dole out some damage proper).
343** The TrueFinalBoss of ''VideoGame/Sonic3DFlickiesIsland'' can only be hit when he enters the platform Sonic is standing on, which he does on every phase (hitting him is how you move between phases). This includes one phase where the boss ship is not even present at the platform ''until'' Sonic has to hit him.
344** In ''VideoGame/SonicForces'', when he first fights Sonic, Infinite is fond of generating hordes of fragile duplicates of himself who just stand there floating in the air, with the real Infinite in the back. By Homing Attacking a row of duplicates, Sonic can bounce far enough to reach the real Infinite. Infinite otherwise spends his entire battle floating some distance in the air, attacking in ways that don't allow Sonic to reach him. [[JustifiedTrope Justified]] in that this technique is for intimidation, not to gain an edge, and Infinite has a crippling inferiority complex about being seen as weak. As a result, he spends some time in every fight putting on displays of power to his opponents, no matter how many times it backfires on him.
345** Heavy Gunner from ''VideoGame/SonicMania'' fires three rockets at a time during its fight. You have to avoid the red missiles but the blue ones can be bounced back to Heavy Gunner and take out his Eggrobo entourage (before eventually destroying his helicopter, ending the fight). The blue rockets are his only weakness yet he keeps firing them.
346** The boss of Speed Jungle in ''VideoGame/SonicSuperstars'' primarily attacks by launching a claw on an extendible arm or shooting missiles and both of these attacks are the keys to damaging it.[[note]]The craft itself is immune to spin attacks[[/note]] When the claw arm is used it shoots across the stage at wherever the character was standing when it locked on, after which the character can climb the extended arm and the boss will try to lock on again. Get yourself high enough by doing this and eventually the claw arm will intersect Eggman's machine and damage it (this is most easily accomplished with Tails as he is able to simply fly up to Eggman's height rather than work his way up by waiting for enough arms to extend to put the character into range). Then for the missile phase it works similarly to the above-mentioned Heavy Gunner in that a barrage of missiles will fire out of the machine, one of which is blue and it can be bounced back into the boss to do damage.
347* Two of the {{superboss}}es in the Flash RPG ''VideoGame/{{Sonny}}'' do this. Omen has a move that makes both his next attack and yours much more deadly; if you already have a shield in place, you can hit him for massive damage while absorbing his attack. Dr. Herregods is even more egregious; he has one million hit points, and once you've knocked off a thousand or so he will heal himself for ''two million'' hit points. [[spoiler: Too bad you have a move that reverses damage and healing.]]
348* ''VideoGame/SpiderTheVideoGame'' ends with you facing a BrainMonster who can only be killed by charging and then triggering a set of switches around it. The solution? Trick the monster to fire it's EyeBeams at you, while taking cover behind those switches. The beams will empower the device, and then you wait for it to attempt using it's TailSlap before pulling a DeadlyDodging so it's tail hits the switch while aiming for you. Hitting the switch each time damages the monster, rinse and repeat having the boss using it's attacks on itself and it goes down in no time.
349* The final boss of the first ''VideoGame/Splatoon1'', DJ Octavio, can only be damaged by [[TennisBoss shooting his fists or missiles back at him]]. Naturally, he never considers forgoing those attacks and sticking with the weapons in his arsenal that ''can't'' be used against him.
350* ''WesternAnimation/SpongeBobSquarePants'':
351** ''VideoGame/SpongeBobSquarePantsRevengeOfTheFlyingDutchman'' has the FinalBoss: one of the Flying Dutchman's attacks has him drop bombs on his ship that [=SpongeBob=] can pick up and throw at him. Said bombs are the only way to properly damage him, and he goes down after a few hits.
352** In ''VideoGame/SpongeBobSquarePantsBattleForBikiniBottom'', every single boss does it:
353*** Robot Sandy's GroundPound move leaves her head vulnerable to attacks.
354*** Robot Patrick is only vulnerable when he gets dizzy after using his SpinAttack.
355*** [=SpongeBot=] [=SteelPants=] leaves several of his red buttons open when he uses his SpinAttack.
356** ''VideoGame/TheSpongeBobMovieGame'': King Neptune keeps using his easy-to-dodge sniper move, which [=SpongeBob=] can deflect off the frozen Mr. Krabs and back into him.
357** Giant Plankton in ''VideoGame/SpongeBobSquarePantsCreatureFromTheKrustyKrab'' just stands there with his hands on the buildings, waiting for you to hit them.
358* ''Franchise/SpyroTheDragon'' is full of this. In the first game, Doctor Shemp would have lived if he didn't expose his back when he attacked, and Metalhead combines this with BossArenaIdiocy; he could have easily stayed in the first area after you destroyed his power poles and would have been invincible. In the second game, to defeat Crush, you need to attack him, then let him bring the ceiling down on himself. It's somewhat subverted, as the rocks can hurt you also. Halfway subverted when he uses that against you, chasing you for a bit before smashing the ground. In the third game, ALL THE BOSSES are like this. The first four deserve special mention, as your ally helps you to hurt the boss. Of course the boss doesn't pay attention to the powerful kangaroo, the flying penguin, the yeti or the laser-gun armed monkey. The true final battle gives you a UFO, while the boss is just waiting for you to get on it. Mind you, the entire area is filled with purple acid, save for a small platform.
359** Metalhead may be somewhat justified in leaving the first area; since those poles are power poles, he may require them to operate at a combat-capable level (or at all, since destroying all the poles in the level causes him to promptly topple over dead).
360** And fair's fair to Dr. Shemp, unlike most examples of this trope, he does learn from his mistakes, and each subsequent exposure of his back is shorter harder to bait from him. If he'd had one or two more hit points, it's possible he may have subverted the trope and become invincible. Of course, [[RuleOfThree he doesn't]].
361** The battle with Ineptune in ''[[VideoGame/SpyroAHerosTail A Hero's Tail]]'' is a prime example of this. Ineptune's only weakness is being rammed by Spyro after she either looks down after missing a shot at him, or laughs after hitting him. Neither of these tactics serve any benefit to her.
362** The two battles with Red are the embodiment of this trope. In the first battle, Red repeatedly conjures up exploding boxes which almost never hurt Spyro and are the ONLY way to hurt Red. In the second battle, he turns into Mecha Red, a robot version of himself, and decides that the best place to fight Spyro is in a room FULL of weaponry that he designed, all of which is capable of hurting him, and his former captive is outside in the control room making this weaponry available to Spyro CONSTANTLY.
363* ''VideoGame/StarFox64'':
364** Some bosses will attack you with weapons that can be destroyed and converted into collectible bombs, even if bombs are the boss's only weakness, and without a constant supply you would quickly be left helpless. One boss attacks by constantly shooting floating barrels. It's almost impossible to be hit by these barrels, but they can be shot to yield health-pickups.
365** There's also the boss of Sector Y. He's quick and maneuverable, and since he's one of the few bosses that can be hurt without attacking a weak point, those are its greatest strengths. And every so often he flies to a platform in the middle of the arena and just stands there shooting at you, making him an easy target. Said boss, the Shogun, will ''begin to heal'' if left alone long enough on his ship.
366* ''VideoGame/{{Sundered}}'': The boss Hysteria is a giant SpiderTank whose weak points are too high for Eshe to reach. He would be impossible to defeat if not for the fact that one of his attacks (in which he smashes the ground with a giant hammer) will launch Eshe high enough into the air to attack any of his weak points if it misses her. The same attack also throws debris into the air, creating temporary floating platforms for Eshe to climb.
367* ''Franchise/SuperMarioBros'' has quite a lot of these. Bowser in particular tends to be a big offender:
368** ''VideoGame/SuperMarioBros1'': Bowser mostly commits BossArenaIdiocy, placing an axe at the end of his bridge even after seven fakes fell to their doom. But for this trope, his habit of making big slow jumps in the air can be incredibly helpful to the player, especially in later worlds.
369** ''VideoGame/SuperMarioBros2'': It was bad enough that Wart keeps a machine in his room that constantly provides his WeaksauceWeakness (vegetables, because [[AllThereInTheManual he is allergic to them),]] but he also opens his mouth to shoot deadly bubbles at the protagonist, allowing them to effectively force-feed him to death.
370** ''VideoGame/SuperMarioBros3'':
371*** The Koopalings would be invincible if they simply resorted to jumping around after getting hit instead of coming out of their shells.
372*** Bowser will keep ground pounding at Mario, even if it means his [[RingOutBoss death.]]
373** ''VideoGame/SuperMarioWorld'': If Bowser stopped throwing Mechakoopas after Mario, there'd be no way to defeat him.
374** ''VideoGame/SuperMarioWorld2YoshisIsland'': Prince Froggy's fight begins with him swallowing Yoshi whole. Froggy will also eat Shy Guys which Yoshi can turn into eggs and throw at his uvula.
375** ''VideoGame/SuperMario64'': If Bowser didn't have bombs surrounding his battle arena, there would be no way to defeat him.
376** In ''VideoGame/NewSuperMarioBros1'', it's played straight in about half of his fights against Bowser Jr. In most of the later fights, he becomes aware of the fact that he's vulnerable when not inside his shell, so he retreats into it whenever it seems like Mario might jump on him. (You can tell when he's doing this when his bandanna is over his mouth.) Unfortunately, he throws Koopa shells at you after every time he does this, which you can throw back at him to flip him over helplessly. ''Not'' the best compensation for a new tactic.
377** In ''VideoGame/SuperMarioGalaxy'': If Bowser just restricted himself to breathing fire and spinning around in his shell, you'd have no way to defeat him. Thankfully for the player, he'll also jump at you, even if you're standing on a thin layer of glass which is right above a lava pool... which is the only thing that can damage him.
378** ''VideoGame/NewSuperMarioBrosWii'': If Bowser just restricted himself to smashing the foundations of his castle and not breathing fire, blowing out passages, he would have killed you.
379** ''VideoGame/SuperMarioGalaxy2'':
380*** If Bowser would just refrain from {{Megaton Punch}}ing the planet and launching those meteors into the sky, you'd have no way to defeat him.
381*** If Megahammer never fired Bullet Bills at you to be licked up by Yoshi and shot back at its [[AttackItsWeakPoint weak points]], it'd be untouchable ''in spite'' of the BossArenaIdiocy inherent in having both [[PowerupMount Yoshi]] eggs and Sling Stars sitting around.
382** In ''VideoGame/NewSuperMarioBrosU'', during the fight with him in The Mighty Cannonship, Bowser Jr. would be completely invincible if he didn't feel the need to fire homing Torpedo Teds at you that can be easily redirected into him.
383** A couple of bosses in ''VideoGame/SuperMario3DWorld'' play this straight:
384*** Again, Bowser uses this trope when he throws soccer bombs that can be kicked back onto the car he's riding. If he'd just kept on spitting fire at Mario and his friends, he'd be invincible.
385*** Pom Pom uses doppelgangers to aid her in her fight. You have to hit the real deal in order to damage her. The trope comes in when she decides to stand out from her doppelgangers for no apparent reason by having a different colored FuumaShuriken than the clones, as well as a few other differences.
386*** Both Hisstocrat and [[spoiler: Queen Hisstocrat]] feel a need to have their servants hold plates over their heads for no reason other than to make it easier to stomp them.
387*** Boss Brolder would be invincible if it wasn't for the fact that he's hurt by having a Brolder (which [[FlunkyBoss he summoned to help him]]) thrown at him.
388*** [[spoiler:Meowser]] somehow felt the need to go onto POW blocks at certain points of his fight. Said POW blocks are the only thing that can hurt him.
389** The ''VideoGame/BowsersFury'' extra game for the ''3D World'' rerelease on the Switch brings us Fury Bowser. While he is smart enough to block Giga Cat Mario's paw swipes and will fling him away after enough tries, many of his other attacks give Mario an opportunity to harm him; he can rain down wooden spikes that Mario can pick up and hurl into his face (or simply hold and inflict CollisionDamage unto Bowser), fire off the aforementioned soccer bombs, and even try to GroundPound Mario with the spiky side of his shell, exposing his underside for a GroundPound or a cat dive. Even ThatOneAttack, where Bowser spins like a wheel towards Mario, can be sidestepped and countered. Of course, the main justification is that Bowser is so [[UnstoppableRage unbelievably angry]] that he can't make a proper strategy, which gains even more support when, at the game's end, he is freed from the main cause of his fury, and proceeds to not only ''steal'' the Giga Bells, but also fire off tons of projectiles to keep Mario from trying to reclaim them. Of course, he occasionally stops to laugh instead of staying on the move, which gives Mario the opportunity he needs.
390** In ''VideoGame/SuperMarioOdyssey'', in both fights with Bowser, if he didn't throw his hat, there would be no way for Mario to use it to defeat him. Also, in the game, many bosses would use certain tactics that did more harm to themselves than actually helping them.
391*** Hariet would be unbeatable if she didnt throw bombs towards Mario. It's even worse for her when she threw large bombs that would get ''stuck to the ground'', leaving an open room for Mario to counterattack.
392*** Rango would be invincible if he didn't throw his hat.
393*** If Madame Broode had just let go of her [[RightHandAttackDog chain chomp]] once Mario had captured it, he would have no way to wind it up and launch it back to her, and she could continue fighting.
394*** If Knucklotec didn't summon icicles and feel the need to punch Mario, there would be no way for Mario to capture his hands and use them back onto him.
395*** Though the player could actually trigger this, Cookatiel really dug its grave by spewing lava into the pot, since Mario (as a lava bubble) could climb up the lava spew.
396*** [[spoiler:[[AttackOfThe50FootWhatever The Ruined Dragon]] would be basically unbeatable if it didn't slam its head on the ground every time.]]
397*** [[spoiler:Somehow, the Broodals decided that spawning ''Pokeys'' into the arena would help them during the fight with their {{Humongous Mecha}} Robobrood. It didn't work.]]
398** ''VideoGame/MarioParty3'': During the FinalBoss battle, [[spoiler:the Millenium Star]] attempts to attack the player with star-shaped projectiles. This itself isn't a problem, but because the boss lowers its position shortly afterwards, the player can quickly grab one of the projectiles and throw it back at him.
399** ''VideoGame/MarioParty5'': Bowser in his giant form. He can breath fire out, and throw orbs that release shockwaves, yet keeps using orbs that leave behind rocks that can be thrown back at him after he uses his fire breath.
400** ''VideoGame/MarioPartyDS'': Piranha Plant, where you [[PlayingTennisWithTheBoss catch the projectiles he spits at you and throw them back at him]]. Why is this tactical suicide? On the board itself, he simply breathes fire at you, which cannot be turned against him.
401** The PostFinalBoss of ''VideoGame/MarioAndLuigiPartnersInTime'' is a very ''special'' example. [[spoiler:Shrowser fires some fireballs and counters others in an absolutely horrible way. He ends up attacking his new power source: the ghost of the Elder Princess Shroob.]] This is ''[[EnforcedTrope necessary]]'' for a winnable encounter, as this particular boss won't give you the opportunity to attack or use items; the ''only'' way to win is to dodge and counter.
402** ''VideoGame/SuperMarioWorld'': Many GameMod boss battles either work off an AIRoulette or follow a set pattern, with the ones in games like ''VideoGame/BrutalMario'', ''Scarlet Devil Mario'' and ''Super Mario LD'' being set pattern types and the ones in certain other hacks being the AI roulette types.
403* In ''Super VideoGame/MeatBoy'', many bosses do this. For example, the boss of Chapter 1: The Forest, Lil' Slugger, will chase you through a sea of sawblades, and ultimately commit suicide in a sawblade trap. [[spoiler: Little Horn in Chapter 4: Hell will smash his head into the small platform you stand on. If you dodge it, Little Horn gets a bump on his head and is damaged. Two more times and he's dead. And, as a reference to ''Super Mario Bros.'', in the final boss fight with [[FetusTerrible Dr. Fetus]], you get to press a button and watch the floor collapse under him as he falls to his death(?).]]
404* ''VideoGame/TazWanted'': In the third area boss fight, Yosemite Sam attacks Taz by tossing dynamite throughout the warehouse, Taz can lure Sam into tossing dynamite towards the explosives near him to damage him.
405* In ''VideoGame/TeenageMutantNinjaTurtlesTurtlesInTime'', the stage four boss is Shredder himself manning a SpiderTank. The turtles can't hurt the mecha directly; they have to throw Foot soldiers at it. If Shredder stopped sending his mooks in, he would have all the time in the world to simply pick the turtles off with his guns. To be fair, at least the exact type of mooks you have to use as ammo changes with the difficulty level: easy has the normal variety, normal has the ones that throw shurikens and hard has the variety that block most of your attacks and can only thrown reliably by hitting them with a running tackle first, which can be tricky to connect with.
406* In ''VideoGame/{{Terranigma}}'', the final boss' second form uses ''only'' ranged attacks, including a screen-filling beam which can take a non-blocking player down in less time than it takes to read this sentence. If the player hangs around the bottom of the screen, though, [[spoiler:Dark Gaea]] responds by getting close enough for Ark to slash. [[spoiler:That may be intentional, though: the boss does, at the beginning of said combat, explicitly say that it's taking a physical form to make the fight fairer.]]
407* The FinalBoss of ''VideoGame/{{Terraria}}'' has several eyes on his body that must be taken out to progress the fight, but can only be damaged while open. The one on his forehead stays closed almost all of the time, and only opens in order to fire his Phantasmal Deathray; if he never used the Deathray, you wouldn't have a way to beat him.
408* ''VideoGame/TopHunterRoddyAndCathy'' have ALL of them, despite being notorious SpacePirates.
409** Sly, the first boss, controls a mech which dispenses slow-moving, bouncing mines at Roddy and Cathy, which can be grabbed and flung back at him. It somehow never occurs to him to simply ram his mech forward and run over the players, relying entirely on this attack which makes him a lot easier to defeat. He makes the same mistaske during the BossRush rematch.
410** Big Guy attacks Roddy and Cathy with his hovering battleship, where he will fight by dropping bombs from his external carriage. Said carriage have three compartments behind which can be hit, resulting in a massive explosion that damages Big Guy.
411** Burns, who pilots a giant robot, alternates between using the robot's hydraulic pump to flatten Roddy and Cathy, or pound the ground causing rocks to fall from above. Those rocks however stays onscreen and can be picked up and flung on Burns for damage.
412** Misty, who averts this trope in her initial battle, somehow follows it when you fight her a second time (in the above-mentioned Boss Rush). Instead of her original mech she now pilots a robot similar to Sly's, and some of her snowball projectiles contains mines which can be picked up and flung at her.
413** The first phase of Captain Klapton the FinalBoss, where his dragon mecha extends it's neck to breath fire on Roddy and Cathy. Said robot's exposed neck contains removable parts which can be yanked off and then thrown back on it to cause damage. What's even better is that the dragon will constantly regenerate new segments to be pulled off and flung.
414* In ''VideoGame/TreasureAdventureGame'', several bosses suffer from this. However one robot subverts it: once you've attacked it twice when it exposes its weak spot, it changes its programming to not expose it any more.
415* It would be easier to list ''VideoGame/AnUntitledStory'' bosses that don't stop in their tracks and practically yell "HIT ME! HIT ME!". There are two.
416* ''VideoGame/{{Undertale}}'' has a variation with Undyne's boss fight, where the action she does is important to ''not'' killing her. Specifically, you have to keep fleeing from her in order to spare her, and if she didn't turn your SOUL from green back to red (as the green SOUL mode prevents you from fleeing), then you would have no choice but to kill her.
417** There's also certain segments during the fight against [[spoiler:Photoshop Flowey]] where [[spoiler:he uses attacks from one of the six SOULS, giving you the chance to call out to that SOUL for help, which turns them against him and helps you win]].
418* In ''VideoGame/{{Unworthy}}'', Gaston, Heir of Ambition has an attack where he jumps to the platform off-screen and begins shooting ice arrows straight down. During that time, he's completely invulnerable, and you can only wait until the attack ends. It makes sense he has to recover, but unclear why he has to come back down to the ground to do so. Even if he activates this attack while near death, he chooses to extend it by firing two such arrows at once for the final volley, and then come down, rather then simply staying back up. Presumably, he's literally [[HonorBeforeReason too ambitious to consider such a cowardly move]].
419** It's equally unclear why for his normal attacks, he always stops a short while before reaching the edge of the arena, giving you just enough space to roll behind him, and get a couple of hits in while he's shooting in the wrong direction.
420** Amandil, Father of Darkness fights you in an arena divides in half by a beam that cannot be crossed, except through using a Spirit Bow. Nevertheless, he occasionally teleports in right next to you to attack with a staff, even though he has several ranged attacks and is far safer at range. He even does it when you are blinded by a previous attack, and so basically incapable of either shooting at him, or dodging his shots well, yet still able to dish out damage in close quarters.
421* ''VideoGame/{{Warframe}}'':
422** Councillor Vay Hek, the boss of Earth, is invulnerable until he raises his faceplate to scream propaganda at you.
423** Sargas Ruk, the final boss of Saturn, is completely invulnerable until he begins to launch his deadliest attacks, after which various parts of his armor open up (presumably to vent heat), leaving him wide-open to attack.
424** The Ropalolyst is only vulnerable to attack after being stunned and forced to fight on the ground, which requires ramming it into super charged energy pillars in its arena....except the pillars (well conduits) don't charge on their own. They only get overcharged when the Ropalolyst ''shoots at them with a giant death ray''. There's also elements of BossArenaIdiocy, as it can only be fought in an area with the precise set of equipment needed to defeat it. Unlike the above two bosses, though, there is a justification for both of these tropes - [[spoiler:the arena is implied to be below Alad V's command center, so the Ropalolyst is there to ensure that he follows through on his debts]].
425* ''VideoGame/WarioLand'' bosses tend to spend a lot of time invulnerable, so when you get an opening, it's usually this trope at work. Some bosses, including the final bosses of the first and fourth games, even give you throwable objects without which they would be unbeatable.
426* ''VideoGame/WarioLandShakeIt'' has examples in all of its bosses, save for Chortlebot, who falls under [[BossArenaIdiocy a different category entirely]]:
427** Rollnratl would be invincible if he didn't slam his head into the ground in his first phase, throw only the red missiles which explode on contact, as opposed to missiles which could be stood on and stuck in the ground in his second phase, and summon two satellites which could ''also'' be stood on in his third form.
428** Hot Roderick would be invincible if he didn't [[DickDastardlyStopsToCheat throw wrenches and tires at Wario,]] which he can punch back at his engine, making it go kaput and disabling the flame keeping Wario from punching his engine.
429** Bloomsday combines this with BossArenaIdiocy; if he didn't summon Bandineros with his sucking attack, Wario wouldn't have anything to throw at him to stun him and eventually knock him into the lake surrounding his arena.
430** Large Fry is a '''''triple''''' offender: he couldn't be hurt if he: A. didn't slam the ground and summon bags of enemies, which could be thrown into his mouth, B.spit out a bomb, when this happens enough times, and C. ''just not eat everything that comes too close to his gob.''
431** The Shake King would be invincible if he didn't do the charging attack that allows Wario to stomp on him, causing to trip and get stuck in the wall due to [[HornyVikings his helmet,]] get rammed so that he falls out and get thrown into the ceiling for incredibly high damage. For extra points, he ''continues'' this even after he revives for the second phase!
432* ''VideoGame/TheWonderful101'': With shields that are too thick to break through and you only controlling one [[spoiler: Platinum Robo]], the FinalBoss [[spoiler: Jergingha]] might've been completely invincible... [[spoiler: if one of his attacks didn't involve shooting out other robots that your team can hijack and use to form the giant Unite Morphs needed to break through the shields]].
433* ''VideoGame/WorldOfWarcraft'':
434** Both C'thun and Yogg-Saron, the game's resident {{Eldritch Abomination}}s, employ attacks that swallow or consume players, but also place them in a location where they can inflict damage on the normally invulnerable boss. In the latter case, you have to use the portals yourself.
435** Icehowl in the Crusader's Coliseum is a BullfightBoss who literally charges into walls and stuns himself. Justified, as yetis aren't all that smart.
436*** Crush of the Brawler's Guild has a similar strategy to Icehowl.
437** Hakkar the Blood God drains the life from the raiders, healing himself to nearly maximum health. However, all over the arena there are winged serpents that leave a cloud of poison when they die. If the players poison themselves, Hakkar drains the poison from their blood.
438** Baron Ashbury in Shadowfang Keep will occasionally start healing everyone, friend and foe, in the nearby area. To convince the players to let him channel it, he'll hit the entire party with an HPToOne spell, necessitating a balancing act between staying alive and keeping him from undoing too much damage. If he had not healed himself, the players would have been in big trouble. Of course, there's an achievement for defeating him without letting him heal.
439** Millie Watt in the Brawler's Guild has the ability to put void zones on the ground, and one type incapacitates you unless you're damaged. By running into the void zones before the latter is used, you can free yourself.
440** A somewhat [[DownplayedTrope downplayed]] example is Ahoo'ru, who protects himself with an impenetrable barrier[[note]]If you take longer than two minutes to defeat a Brawler's Guild opponent, a rain of fire sweeps across the arena and kills you[[/note]]. The barrier can be removed by tricking the Avenging Angels into charging him. However, not only do you have to reduce the angels to half health before they charge, but you also have to navigate the shifting lights to reach the orbs that spawn them.
441** On the fourth phase of the fight with Garrosh Hellscream, which is only available on Mythic, you have to trick the fleet into firing an Unstable Iron Star at you, and then use it to interrupt his Unleash Rage attack.
442** Asaad in the Vortex Pinnacle periodically unleashes a powerful lightning storm that would normally almost certainly kill everyone on the platform. However, before doing so, for some unexplained reason he creates what's basically a Faraday cage where players can run and hide to avoid lightning damage.
443** Talixae Flamewreath, the second boss of the Court of Stars has a council of three demons with her and for each one nearby she and the demons have their health and damage doubled. At the start, she has raid boss level health and can easily crush even a tank. But each time the players take out a fel enforcer, she sends one of her demons away to investigate.
444* ''VideoGame/{{XenoGears}}'': The first form of Deus consecutively heals itself and delivers a counterattack when striked. If it isn't attacked, it uses a move to cut all HP, including its own, by half, repeating until all its health has been minimized enough to be finished in a few blows.
445* ''VideoGame/YookaLaylee'', in true form to [[VideoGame/BanjoKazooie its inspiration]] have all its bosses be this trope:
446** The Great Rampo would be invincible if he just kept doing the fire breath attack and didn't show his teeth once you got to the top.
447** Brrreeze Blok wouldn't melt as fast if he just ''stopped moving'', keeping him from going over the torches you light behind him, making him melt in addition from you being able to breathe fire due to the Scorchberries in the room.
448** Trev the Tenteyecle would be invincible if he didn't open the eyes on his tentacle when he smashes it onto the floor, as well as opening the hatch to his ''main'' eye when this happens.
449** I.N.E.P.T would be impossible to beat if he didn't rush at you in his first phase, allowing Kartos to get a good shot at him, smash into his own mines in his second phase, and used regular missiles as opposed to homing ones.
450** Planette couldn't be hurt if she just floated above the duo and shot at them.
451** Capital B. would be invincible if there weren't two Frostberry plants as well as a bunch of Corplet crates, allowing you to get a good shot at the now-flying boss, and in his third phase where he does a ShockwaveStomp using his cane, which eventually gets stuck and allows you a good shot at him. To his credit, at least the former was Dr. Quack's fault, and he at least didn't fall into the GrimyWater he flooded part of the room with in the latter.
452* ''VideoGame/YsTheOathInFelghana''. If [[spoiler: Chester]] didn't use ThatOneAttack on you, you'd never kill him, as he is invincible until he uses that dash stab attack of his. He's got plenty of other attacks to murder you outright ([[ThatOneBoss especially the 2nd time you fight him...]]), he clearly doesn't ''need'' that Dash Stab, complete with the "'''HIT ME NOW'''" sound effect that also telegraphs he's about to do that move.
453** Similarly, Ernst in ''Ys VI'' will usually hit you first when you get close, but takes a moment to recover from his dash attack.
454* Most of the bosses in ''VideoGame/{{Bugsnax}}'', since it's not like you have actual ''weapons'', but special points to Mothza Supreme, which not only fights you near a ziggurat with a platform on it that lets you throw stuff at it, but rains down the explosive creatures for you to throw at it, calls up whirlwinds that conveniently knock them out and put out the fires they naturally have so you can pick them up safely, and ''only ever hovers right above the giant pizza cutters that damage it''.
455* VideoGame/{{Klonoa}}'s only means of attack is grabbing and throwing enemies, meaning ''every boss in the series'' would be unbeatable if they'd just stop summoning minions.
456
457[[AC:Non-video game examples]]
458* Discussed [[http://www.captainsnes.com/2018/08/03/914-villains-first-rule/ here]] in ''Webcomic/CaptainSNES''. According to [[VideoGame/ChronoTrigger Magus]], the Villain's First Rule is "Always have a weakness, or fate will make one for you." In other words, villains have to deliberately leave holes in their defenses that they can manage, or else the heroes will blindside them with something that can break through their defenses anyways.
459* One of ''Website/{{Cracked}}'''s [[http://www.cracked.com/photoplasty_586_31-life-lessons-you-can-only-learn-from-video-games/ 31 Life Lessons You Can Only Learn From Video Games]] is an illustration involving ''VideoGame/PunchOut'': "it may take a few tries, but life gets easier once you figure out the patterns."
460* The Omnidroid machines in ''WesternAnimation/TheIncredibles1'' can only be hurt by their own claws. That said, the new model is smart enough to not attack itself voluntarily.
461* ''TabletopGame/MagicTheGathering'' features a number of cards like this. Lich, Final Fortune (and its many reprints under different names), Nefarious Lich, Phage the Untouchable, Immortal Coil, and the Pact cycle will all kill you under the proper conditions. The trick is to win before those conditions are met or have very strong counters. On a broader level, this is actually part of the color black's traditional color strategies. A large number of strong black cards demand costs in addition to mana in order to activate or (more in line with the trope specifically) repeatedly harms the player for having them out. This has waned over the years, mostly due to numerous ways to benefit from harming oneself or sacrificing creatures that have been introduced to the game.
462* Parodied in ''Webcomic/SluggyFreelance'' where, when fighting a giant monster, Torg [[GoForTheEye ignores the creature's giant eyeball altogether]], instead focusing on the fact that, [[http://sluggy.com/comics/archives/daily/20091208 "It lifts its belly every minute or two! Go for the soft, occasionally revealed, underbelly!"]]
463* The ''TabletopGame/StarWarsCustomizableCardGame'' features this for the second Death Star. A card called That Thing's Operational lets you move your Death Star and blast capital ships with it, but it also means that, when not around Endor or if the shield's not up, your Death Star is vulnerable. The light side player doesn't even have to play another card!
464* Apollo Creed in the second ''[[Film/RockyII Rocky]]'' movie. By the final round, both he and Rocky are exhausted, and Apollo has won every round except one. All he had to do was fight defensively and he would have won by decision. Instead, he goes for a knockout victory, a strategy that ultimately costs him the match and his championship.
465* One of Wrestling/{{Ric Flair}}'s signature spots is going up to the top rope then being hurled off. He did this ''all the time'', despite the fact it doesn't lead to anything except getting thrown off by anyone he squares off with.
466* In the fourth book of the ''Literature/YoungWizards'' series, the heroes are fighting the demon Balor, who is invincible unless he opens his eye to use his EyeBeam attack. The problem is that he doesn't need to use that attack to win, so it looks like the world is doomed... until the SpoonyBard taunts Balor into using his EyeBeam, at which point the hero throws the Spear of Fire into Balor's eye and kills him.
467* {{Invoked}} in ''Manga/DragonQuestTheAdventureOfDai''. In the final battle against Demon King Vearn, he showcases his "Tenchimatou" stance - a technique which allows him use two devastating attacks plus an AttackReflector ''at the same time'', at the cost of requiring him to stand perfectly still to charge energy (meaning it can only be used as a CounterAttack). [[TheLancer Popp]] realises that Vearn is so StrongAndSkilled that he could defeat the heroes instantly [[BoringButPractical just by walking up and punching them]], but that the strain of using Tenchimatou creates a brief moment afterwards where he freezes and becomes vulnerable to attack. So Popp ''taunts'' Vearn by claiming that his so-called "ultimate technique" has a hole in it, knowing that Vearn's {{Pride}} will ensure he fights exclusively with Tenchimatou just to prove him wrong.
468* In the first story of ''Fanfic/VowOfNudity'', Haara finds herself badly wounded, unarmed, and fighting a bronze wyrmling sorcerer who's vastly stronger than her. She defeats it by standing near a load-bearing wall and taunting it into firing a BreathWeapon at her, shattering the wall and letting a deluge of swamp water drown it.

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