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[[quoteright:350:[[VideoGame/AnarchyReigns http://static.tvtropes.org/pmwiki/pub/images/rsz_pile_bunker_1009.jpg]]]]

A common weapon in the RealRobotGenre and other Sci-Fi works, but not necessarily used by the the [[HumongousMecha mecha]] themselves, as there are sometimes hand-held variants. They work much like RealLife pile drivers, but rather than operating continuously (for example, hydraulically), they typically work with a one-shot chemical charge that drives the metal stake or penetrating spike, complete with SpentShellsShower and a [[RevolversAreJustBetter revolver]] mechanism.

Pile bunkers are sometimes built into a special [[PowerFist gauntlet]] or [[ArmCannon arm]] for mecha or humans. Often, like with [[ThisIsADrill drills]], it is justified by the need to penetrate heavy armor or barriers.

The spike usually returns to its original position after each "shot" (though ''how'' is not always apparent). Also, the pile bunker's firing mechanism must be made from incredibly strong materials, or it will explode every time the spike strikes the target, similar to gun with a jammed barrel. Alternatively, it won't be able to penetrate a tough enough target.

Guns that fire the spike away should go into the [[NailEm nailgun]] category.



[[folder: Anime and Manga]]
* Cyan [[MeaningfulName Pile]] uses one in ''LightNovel/AccelWorld''.
* Featured prominently in ''Anime/ArmoredTrooperVOTOMS'' and its spinoff, ''Armor Hunter Mellowlink''. The hero of the latter especially likes to finish off his oponents with the pile bunker attachment on his AT-rifle. Armored Troopers, on the other hand, work on the principles of this trope via punching with the arm, as they spend rounds to quick-fire a punch, even without a stake or spike present.
* ''Anime/DaiGuard'''s Knot Buster and Knot Punisher. Justified, since they have to be very precise, easy to use and very powerful to accurately destroy Fractal Knots.
* ''Anime/MobileSuitGundamF91'' introduced a weapon called the Shot Lancer which effectively combines the Pile Bunker with the JoustingLance; its main goal is to let pilots disable enemy mobile suits without triggering a [[StuffBlowingUp catastrophic reactor explosion]] (which is extra bad when you're in a space colony). The Shot Lancer also turns up in the sequels ''[[Manga/MobileSuitCrossboneGundam Crossbone Gundam]]'' and ''[[Anime/MobileSuitVictoryGundam V Gundam]]''
* In ''Anime/MobileSuitGundamIronBloodedOrphans'': the mace wielded by Gundam Barbatos is equipped with a Pile Bunker that fires from it's tip. The [[spoiler: Graze Ein]] also has a pair of these mounted on each arm. [[spoiler: Ein uses one of them to [[ImpaledWithExtremePrejudice critically injure]] Shino, and another one for breaking the Barbatos Wrench Mace. Unlike most examples, they are single use and once fired, they detach themselves instead of retracting.]]
* Charlotte Dunois' Rafale Revive Custom II from ''LightNovel/InfiniteStratos'' can carry a pile bunker weapon module hidden in its left shield.
* In ''Anime/NeonGenesisEvangelion'', Sachiel, the very first Angel encountered, has one in its palms (when retracted, the spikes extend from the Angel's elbows). It pierces right through the protagonist's mecha's eye, in a very painful-looking way.
* ''Franchise/{{Zoids}}'':
** The CP-08 Pile Bunker used by Rev Rapter and Iguan are likely the [[TropeNamer Trope Namers]].
** By ''Anime/ZoidsGenesis'' many different Zoids carry small pile bunkers used for pivoting.
* In ''Manga/{{Bleach}}'', Gin primarily uses his Zanpakuto (an extending sword) like a pile bunker.
* In ''Manga/{{Gamaran}}'', Banri Omiya wields a special "kuda yari" (tube spear) and, thanks to the above-mentioned tube, can use it to stab, withdraw and stab again at a very fast speed, like a pile driver indeed.
* ''Anime/TheBigO'' has these as one of its signature weapons. Each of its massive arms contains a piston which is used to amplify its punches.
* [[Manga/InuYasha Ginkotsu from the Band of Seven]] is shown to have one built in his chest, but is destroyed before he can use it on Inu Yasha.
* In ''Anime/SenkiZesshouSymphogear'' Hibiki Tachibana is [[BareFistedMonk unable to make her Gear summon weapons]], so instead she learns to convert its wrist and calf armor into piston-like structures which can be "fired" to add more force to her punches and [[InASingleBound jumps]]. By the second season she has upgraded to ''[[RocketPoweredWeapon rocket-propelled]]'' pile bunkers, and can [[ElementalPunch use them as a delivery system]] for the team's CombinedEnergyAttack.
* [[Franchise/{{Digimon}} Crusadermon]] has one of these built into [[ShesAManInJapan his/her]] arm, though it shoots magical blasts instead of stakes.
* The [[CompilationMovie movie adaptation]] of ''Anime/MagicalGirlLyricalNanohaAs'' gives Reinforce a ''[[ClingyMacGuffin parasitic]]'' pile bunker as a physical representation of [[SuperpoweredEvilSide her corrupted Defence Program]]. [[AllThereInTheManual According to supplemental material]] it's an Ancient Belkan AntiArmor weapon modified from a wrist-mounted spear thrower.
* Ikoma has one as a WeaponOfChoice against the [[OurZombiesAreDifferent Kabane]] from ''Anime/KabaneriOfTheIronFortress''.

[[folder: Light Novel]]
* In Hiroshi Sakurazaka's ''[[LightNovel/AllYouNeedIsKill All You Need Is Kill]]'', the [[PoweredArmor Jackets]] used by the [[CannonFodder Japanese troops]] carry one of these with a clip of twenty charges. They're only marginally effective, but still one of the best options they have.
--> When they first told me its magazine only held twenty rounds, I didn't think anyone could live long enough to use even that many. I was wrong. Mine had four rounds left. I had missed fifteen times--maybe sixteen.

[[folder: Literature]]
* In ''Literature/NoCountryForOldMen'', both the book and the film, Anton Chigurh wields a captive-bolt pistol which is a Real Life version of this used for dispatching cattle humanely.

[[folder: Toys]]
* The M.S.G Weapon Unit [=MW28=] Impact Edge is a pair of spring-loaded Pile Bunkers, and the magazine at the top acts as the trigger for them. It received a re-release which is included in the ''Frame Arms Girl'' Architect kit.

[[folder: Video Games]]
* ''VideoGame/AnarchyReigns'': Douglas Williamsburg has two, built into both arms.
* The ''[[http://images.wikia.com/superrobotwars/images/7/7c/Alteisen.png Alt Eisen]]'' of ''VideoGame/SuperRobotWars'' has a Revolving Stake mounted on the right arm. The machine's MidSeasonUpgrade (the ''[[http://images.wikia.com/superrobotwars/images/3/37/Alteisen_Riese.jpg Alt Eisen Riese]]'') and [[{{Expy}} variants]] all carry the same weapon.
** Similar OriginalGeneration weapons include Rapiecage's Magnum Beak, the equipable weapon "G-Impact Stake", the claws wielded by the Strike Guarlion in the Record of ATX manga, and [[VideoGame/SuperRobotWarsMX Cerberus Ignite]]'s "Ignite Pike". Additionally, Haken Browning from ''VideoGame/EndlessFrontier'' wields the Night Fowl assault rifle with an underslung stake below the barrel of the weapon.
* ''VideoGame/{{Bloodborne}}'' has one in the form of the Stake Driver, a weapon that can be used with the spear-like blade either extended or retracted, and causes a detonation at the tip if an attack is fully charged with the blade retracted.
* VideoGame/EarthDefenseForce2025 [=/=] Earth Defense Force 4 in Japan: The Fencer PowerArmor character has a variety of pile bunker like weapons available to them some causing additional effects like explosions inside the target from forcefully injected plasma.
* Those in ''VideoGame/FrontMission'' look very much like some ''Anime/ArmoredTrooperVotoms'' versions.
* One of Barret's ArmCannon attachments in ''VideoGame/FinalFantasyVII''.
* ''VideoGame/LostPlanet'' has them as a hand-held weapon, and one for the mecha.
* ''VideoGame/ArmoredCore'' has them, too.
* Also by From Software, the now forgotten Xbox 360 game ''VideoGame/{{Chromehounds}}'' featured several versions of these, but powered by hydraulics, not explosives.
* ''VideoGame/DigDug'''s Taizo Hori wields a giant Pile Bunker in ''VideoGame/NamcoXCapcom''.
* ''VideoGame/RType'' has them for ships.
* ''VideoGame/MetalSlug 5'' has it as the Slug Gunner's melee weapon, although this one can't really shoot over a distance.
** In Metal Slug 3D one of the weapons that can be fitted to the customizeable Slug is a Pile Bunker that can be shot out on a chain or used as a ramming tool. Another part having a similiar function is Gunner Arm, essentially two Pile Bunkers placed onto the vulcan parts, if one equipped all Gunner Parts, the Slug will transform into Slug Gunner.
* ''VideoGame/RagnarokOnline'' has a weapon by that name, but with no special qualities other than its incredible power (and weight), and a skill that truly goes with the trope - it's an attack used by Mechanic class while in their [[PoweredArmor Madogear]] and it has a good chance to cancel any defensive spells or skills on the target it strikes. Only downside of the skill is that you need to equip the no special qualities weapon mentioned above.
* ''VideoGame/SteelBattalion: Line of Contact'' introduces the Garpike, a [[HumongousMecha VT]] whose signature weapon is the pair of Bang Needles flanking its sides, which punch through their target and explode.
* An unlockable weapon in ''VideoGame/The3rdBirthday''.
* [[RobotGirl Aigis]] acquires one in ''VideoGame/Persona4Arena'' which she uses to start off her All-Out Attack.
* While he doesn't use one himself, Slayer from ''VideoGame/GuiltyGear'' has this as the name for one of his special moves, which is a sliding straight MegatonPunch (that supposedly punches with the force of an actual pile bunker).
* Chuck has one as his weapon in ''VideoGame/WildArms5'', making him one of the 3 melee characters.
* Many of the walker-type robot characters in ''VideoGame/{{Tobal}} 2'' use this as their melee attack.
* Zenia Valov from ''VideoGame/ArcanaHeart'' has one in her PowerFist [[ICallItVera named "Edinorog"]]. [[BilingualBonus That's Russian for "unicorn"]].
* The Power Fist in ''VideoGame/Fallout4'' can be modified like this. The Puncturing Power Fist upgrade straps a block of concrete with pieces of steel rebar sticking out to the power fist's impact plate. This increases the fist's damage and gives it armor bypassing capability.
* ''VideoGame/MonsterHunter'' has the Dragonators, which are building-sized pile bunkers powered by steam and used to spike monsters that are large enough to be targeted.
* The Scale, the fourth boss of ''VideoGame/{{Furi}}'', wields a pair of pile bunkers.
* This is the strongest but slowest melee weapon option in ''Rogha Armor Force''. It had the most limited targeting arc (mostly consisting of attacking directly ahead in a single linear direction) and takes the most time to recharge between attacks, but makes up for it by destroying any non-miniboss enemy with a giant steel spike through the face.
* ''VideoGame/SLAISteelLancerArenaInternational'' features the Carro's 'pile hammer' melee weapon. As might be expected, it is a slower but more powerful close range weapon that attacks directly ahead of the Carro in a straight line. The problem is that ''SLAI'' is a third-person high-speed arena-combat mech-sim, and thus the pile hammer is not nearly as effective a melee weapon as other manufacturer's offerings.

[[folder: Visual Novels]]
* ''VisualNovel/{{Tsukihime}}'': Ciel's and [[VideoGame/MeltyBlood Riesbyfe Stridberg]]'s conceptual weapons, Seventh Holy Scripture and True Apocrypha respectively, are magical examples. Notable in that Ciel's weapon, Seven or [[BilingualBonus Nanako]] (Literally means Seven Girl), is sapient, and can transform into a girl.

[[folder: Western Animation]]
* Most versions of Rumble from ''[[Franchise/{{Transformers}} Transformers]]'' have a pair of these for arms, except blunt. He uses these to [[DishingOutDirt create small-scale earthquakes]]. Oh by the way, [[PintsizedPowerhouse Rumble is a Cassette-bot]] that fits into Soundwave's chest.
* Armodrillo from ''WesternAnimation/Ben10UltimateAlien'' has pike-bunker arms that are likewise blunt and used to shake the earth.
* In ''WesternAnimation/StevenUniverse'', Bismuth, the blacksmith of the Crystal Gems, created a weapon called a "Breaking Point" that [[spoiler:was specifically designed [[AntiRegeneration to shatter a Gem's]] HeartDrive [[OneHitKill in a single strike]].]]

[[folder: Real Life]]
* Captive-bolt humane killers, used by abattoir workers or vets in some areas as an alternative to the bolt-gun type, operate on much the same principle.