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Story-Driven Invulnerability

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A videogame character just won't die until the plot says they can die.

For example, imagine that before a Boss Battle, there's a short segment in which you are in pursuit of the boss. It's possible to attack the boss during this period, but regardless of what you do, it's impossible to hurt him. You find that it's not until you reach the Boss Room and the Boss Battle "officially" begins can you successfully deal damage.

What happened? The boss had been granted Story-Driven Invulnerability, which occurs whenever a character is rendered invincible simply because the story decrees that they aren't supposed to be killed yet, even though they logically should be susceptible to damage.

This can occasionally be justified with the presence of bulletproof glass or something of that nature, or perhaps the target is only exposed for a time just a second under the time it takes you to fire off an attack. However, you'll find that much of the time no Hand Wave exists. Your attacks will hit but simply not register.

Subtrope of Plot Armor, and Super-Trope of Gameplay Ally Immortality. See also Hopeless Boss Fight, where there's usually a reason or Hand Wave for their invincibility. Subversions of this, in which it's possible to defeat an enemy before you're "supposed" to, are often examples of a Skippable Boss.


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  • The The Incredible Hulk: Ultimate Destruction does this with the Abomination near the end of the game. You chase and attack him, while the military attacks both of you, but the Abomination is completely invulnerable until you reach a certain destination where he will then turn to fight you and gain a health meter. After depleting the his health meter, the cycle repeats a few more times.
  • Hotline Miami: The cleaver-wielding Biker boss occasionally tosses his weapon at you. If you dodge, the cleaver gets stuck in a wall and the boss runs along to fetch it. While he's on his way, he's conveniently immortal.
  • Michael Jackson's Moonwalker has an annoying case where the Big Bad is waiting at the end of each level simply to taunt Jackson for a few seconds before walking away and sending in the actual boss for that level. The annoying part is that he does Collision Damage while on-screen, and Michael can even get stuck behind him and take multiple hits during this time.
  • In Pokemon Rumble Blast, you face Cobalion early on, and he's capable of one or two hit KOing any Pokemon you'd have access at that point, on top of attacking and moving so quickly that you can't realistically avoid him with anything other then a few specific moves. The fact he has a HP bar makes it seem like the fight could be winnable, but he won't get KO'd even if you manage to deplete it, making it a truly Hopeless Boss Fight
  • In Justice League Heroes: The Flash, The Flash can't even attack his Arch-Enemy Zoom while chasing him through obstacles. This doesn't last very long, thankfully, and he can be damaged normally as soon as the path clears out. Additionally, summoning heroes from the Justice League during a boss fight won't do any damage unless the boss was in the vulnerable state anyway.

    Action Adventure 
  • Metal Gear
    • Famously averted in Metal Gear Solid 3: Snake Eater. The fight with The End can be bypassed entirely if you manage to snipe him in a blink-and-you'll-miss-it segment long before you are intended to boss-fight him. He dies from one bullet (in the actual Boss Battle, he can take half a dozen to the head) and the zone where you'd usually fight him is filled with Ocelot soldiers, which, depending on the player, might make the fight even harder. Be aware, if you decide to try this, that The End's camo and gun become lost, since you never properly fight him.
      • Also, you can damage The Shagohod during the chase scene that precedes the boss fight, but the chase scene isn't long enough for you to take away more than 1/4 of its life.
      • However, if you kill Ocelot, you get a Non-Standard Game Over for causing a "temporal paradox".
    • Played straight, however, in Metal Gear Solid. Shortly before fighting REX, the player can look at Liquid through the scope of the PSG1. Firing the rifle does nothing to stave off the "final" battle. Perhaps justified by Liquid's ability to survive seemingly everything but FoxDie.
  • Seen in the LOOTERS! chases in Beyond Good & Evil: The looters are invincible until you catch up with them at the end of the chase, where they die in one hit from the neutralizing cannon.
  • In the first Spider-Man game for the PlayStation, Venom pulls this on Spider-Man, sneaking up behind the hero and leading him into a chase level. During this level, you have to move insanely fast to keep up with Venom, and it is very hard, for even though there is nothing that tries to kill you in the level, you lose if you fall too far behind. However, you can memorize or predict Venom's path beforehand (if you're crazy enough) and land right next to him on a few occasions, which case if you try to punch him or whatever, you have no effect on him.
  • Used in Assassin's Creed II. In a few of the secret tombs, you have to chase a lone guard through the tunnels, dodging traps and finding alternate routes throughout the environment as he desperately tries to evade you. The game disables your projectile weapons in these sections, and even if you get close enough to use your hidden blade the prompt to use it doesn't show up.
    • One of the assassination targets is a bodyguard who, before he is to be killed in the story, can be in a position to attack Ezio. He is completely unkillable (which sort of makes sense, given the framing device). He can, however, be knocked into water with some effort (which effectively eliminates him, though doesn't kill him plotwise).
  • In one of the stages in Sengoku Basara 3 you must race Masamune Date on horseback. While it is possible to do massive damage to him with some tricks, you can only reduce his hit points to one, but you can't kill him. You can however kill his second-in-command Kojuro as you two race towards Masamune's position.
    • All bosses have an introduction cutscene before fighting them, which triggers when you move close enough. Prior to the cutscene, if you have ranged attacks, you can fire them until the end of time, the boss will stand here and wait when you come closer..
  • Several of the pirates in the prologue of Uncharted: Drake's Fortune are invulnerable until the plot decides it's good and ready for you to kill them. Even with the one-hit kills cheat active, they can bleed, but they won't die. The same goes for the final boss.
  • In Ghost of Tsushima, Khotun Khan cannot be killed in the first fight you have with him. Even if you somehow manage to empty out his lifebar he'll still continue attacking until Jin's health is depleted.

    First Person Shooter 
  • In GoldenEye (1997), in the Elaborate Underground Base level, the Big Bad is standing right in front of you at the level's start and promptly runs the heck away. If you use a cheat code to freeze him in his tracks, you can literally shoot him a hundred times in the face with the Golden Gun and he'll just keep standing there, flinching occasionally but never actually dying.
    • In the final level you are supposed to chase Alec around the level shooting him until he challenges you to a final shoot out, however if you blew him up it was possible to knock him off the stage, instantly killing him and triggering the end of the game.
    • If you're quick enough to pop Ouroumov with the golden gun, it will kill him and leave his keycard and briefcase for you to take - neither of which has any in-game use.
  • The bullets don't go elsewhere for Half-Life's G-Man. They bounce off him. Seriously.
    • Considering who he is, it isn't unreasonable to assume that he's actually immune to them.
    • Creepily enough, bullets make the "metal richochet" noise when they hit him...
  • 2027: Only Xander is invincible when you are in the same room as him. Other characters can be killed whenever, but they are usually in locations that prevent you from killing them.
  • In Halo 2, each time you damage the Heretic Leader, he retreats into the ventilation ducts to give a certain dialogue to the Arbiter, and during this time he is invincible. Most noticeable during the glitch where he gets stuck under the balcony, where after a minute, he turns into one of the holodrone spheres himself. Needless to say, he is also invincible if you try to shoot him while he's running to the shielded room.
    • It is possible to kill him in one round with the plasma sword if you're fast enough before his scripted invincibility takes effect.
    • There's a glitch where you can "kill" him on The Arbiter, however, it will cause you to be stuck in an Unwinnable situation, requiring you to restart the level.
  • Call of Duty 4: Modern Warfare, the final mission. You're given an RPG and told to fire on a Ultranationalist helicopter, but it has story-driven invincibility, since it's scripted to wipe out your squad at the end of the level, and is only destroyed by the Russian Loyalists when they arrive(too late for most of you). Interestingly, if you do manage to get a hit in with the RPG (which is the equivalent of hitting a needle in a haystack) while you're in the car, the game activates an alternate (and supposedly glitched) ending where an unnamed squad member comes out of the side of the screen, beats Zakhaev and his guards without them reacting in any way and stands around as the rest of the ending plays out in the same fashion.
    • It's the same with the Big Bad in the flashback mission. Even if you get a perfect headshot with the sniper rifle, the bullet will veer off and hit him in the arm.
  • In Soldier of Fortune II, in Vergara's Mansion, Sanchez is invincible until the end of the mission, and even then he can only be killed by blowing up the fusebox with a grenade, electrocuting him.
  • BioShock fits this trope to a T, when you're chasing Fontaine at the start of the penultimate level. If you're quick, you can shoot him several times - but he has no life bar.
  • In Medal of Honor: Frontline, Sturmgeist is invincible until the final level. In the Golden Lion level from the same game, a Panzerschreck soldier is scripted to kill your truck driver near the end of the level. He's within sniping range, but shots on him won't register before he fires.
  • At the very end of Wolfenstein (2009), after killing the final boss, you're teleported into a collapsing corridor where you have a clear shot at the Nazi Commander Big Bad as he flees away from you towards the exit. You can actually pump several bullets into his back if you're quick enough, but he'll just keep running and quickly escapes.
  • In SiN (1998, the main antagonist of the first three levels, a thug named Mancini, is being pursued by player character John Blade through a bank, a construction site, a series of city blocks and finally a subway. At several points during this chase, he is seen quickly before running away (usually with a hostage in tow), but if you're quick enough, you can snipe or shoot him, which won't cause any damage whatsoever. Most notably, the first encounter with the mutated Mancini has a period of several seconds where he pauses before jumping back into the ceiling, allowing you to run up and blast him in the face at point-blank range with a machine gun (to no effect).
    • In the second-to-last level, Elexis Sinclaire lures you into a trap when you attempt to walk into a room filled on two sides with bulletproof glass and a single entrance - it's possible to try a bank shot into the room just before you hit the trigger that drops the floor out from under you, but the entrance has an invisible wall.

  • In Condemned: Criminal Origins, the first half of the game is spent following a deranged killer through various rundown buildings and an abandoned subway station. You often get glimpses of him as you track him down, and there's at least two specific points in which you actually get a good look at him and have an opportunity to shoot at him. He is, of course, invincible.
  • First Encounter Assault Recon does this with its dragon. Although it's usually justified by the presence of bullet proof glass or similar, the first time you meet him you can still shoot him and find that it does nothing.
  • Resident Evil 4 has you chase a key-carrying Red Zealot through the inner halls of the castle until he mans a minigun turret. Beforehand, he cannot be killed, except in the original GCN version with a well-placed sniper shot.

  • Quite a few bosses in World of Warcraft have this, the most notable being the Lich King. There are about a dozen quests and an event in a raid dungeon where he appears to talk with his minions or other things, but he can't even be attacked.
    • Several bosses in Ulduar and the Argent Coliseum can't be actually be killed, because they are actually good guys, either under mind control or simply testing your skills.
    • The Lich King also makes an appearance in the Halls of Reflection dungeon, where he can be attacked and dealt damage but not killed. In this case, Story-Driven Invulnerability only applies to his last hit point.
  • Several quests in Dungeons & Dragons Online have enemies that are flagged as NPCs - and thus you cannot harm them - while they go through some dialog or reach a certain point, after which their indicators change and you can attack

  • Sonic the Hedgehog:
    • In Sonic & Knuckles, during the Cut Scene in which Robotnik steals the Master Emerald, the player has full control of Sonic and can attack. Robotnik's craft even reacts to hits as if it was taking damage, and there's enough time to hit him eight times, but it cannot be destroyed—even though you'll encounter this particular craft again near the end of the game, as the last segment of the sometimes-final boss battle, at which point eight hits will destroy it.
    • Glitch exploitation eventually allowed an inquisitive player to put Robotnik's apparent invincibility to the test. The hovercraft boss model isn't actually invincible, but has its health set to 255. Hitting it 255 times via glitching caused the model to explode like a normal enemy. Of course, Robotnik still reappeared at the next cutscene point right-as-rain.
    • After beating the robotic Sonic in Sonic 2, Robotnik will flee from his control room into the cockpit of the final boss. Despite being the fastest thing alive, you cannot catch up to him; he will magically speed up if you are too close, even if you spin dash at him or even use debug mode to try and fly ahead of him. You'll probably see it a lot, too.
    • The first Sonic the Hedgehog on the Genesis/Mega Drive had you chase Robotnik up a Death Course with rising water (and the fireballs go through the water!) It's hard to get hits on him, and he acts like he's getting hurt, but he just leaves after you finish the death course.
      • It's actually totally possible to 'defeat' Robotnik in the Labyrinth Zone — if you can dodge every trap, aim your rebound from hitting him for minimal fallback, and successfully hit him eight times, all of which is insanely difficult, Robotnik's Eggmobile will begin to explode just as it does in every other boss fight. He will still, however, climb to the top of the shaft and run away. While exploding.
      • Similarly, you can destroy Robotnik's escape pod after the Final Boss battle, although it doesn't affect the ending.
  • In Mega Man 2, you have to run away from the Mecha-Dragon for a short period before you can fight him. The game even broadcasts this point by having his life bar only appear after the chase.
    • Likewise in Mega Man X, you can't damage Vile until he's forced out of his Ride Armor, even though you can jump and blast his exposed upper body with enough firepower to kill him in the actual fight.

    Point and Click Adventure 
  • In Kingdom O' Magic several characters are invulnerable, and not all are important - there are plenty of bit characters with minimal dialogue who are unbeatable. Specifically, all the elves are invulnerable, but none of the ringwraiths. Seeing as they'll actually fight each other if they wander into each other when you're on screen, you can actually eliminate almost all the wraiths simply by having elves whittle down their hitpoints.

    Real Time Strategy 
  • The Big Bad of Age of Mythology always seems to be just out of reach when seen, always appearing on top of cliffs, on the other side of jail doors, across deep chasms, etc, etc. This is even lampshaded. However, if you do manage to attack him, somehow, you'll notice something. His special ability in his bio only says 'regenerates'. And he does. To the point where it takes an entire army to bring him down.
    Arkantos: You always seem to be hiding behind something when you face me, cyclops.
  • Warcraft III:
    • It is a standard feature in the game: both villains and less important units like neutral buildings. However, due to the way heroes work in this game, they can (and do) die a lot- the problem is killing them for good. Thus in one Alliance mission called the Culling, you repeatedly kill the dreadlord Mal'ganis, but the Altar of Darkness that revives him is invulnerable.
    • Shows up twice In-Universe: When the orcs decide to kill the demigod Cenarius, they find that they can't do so (he has Divine armor, which hugely reduces all damage except Chaos). But wouldn't you know it, there's a fountain of demon blood not too far away that puts them back under the Burning Legion's thrall. The second time, the Night Elves try to take out the demon Tichondrius, but he too has divine armor, so Illidan uses a demonic artifact to turn into a demon and kill the dreadlord.
  • Napoleon: Total War:
    • While some of your generals can be killed in battle, certain ones, such as the title character, will instead be listed as wounded whenever they go through death. This protection even extends to taking howitzer shells to the face. They will respawn in a few turns, no matter what.

  • Done to the point of reducing Sagi to a borderline Failure Hero in Baten Kaitos Origins, where you will fight a lot of Machina Armas and lose to every single one of them. It's not until much later, when an event in the story grants you a power that actually lets you damage the indomitable metal buggers, that you get to come back and reduce them to scrap.
  • In Diablo II, when you go to defeat Baal, he just sits there and summons a few rounds of minions at you, while being completely invincible until the "real" battle with him begins in the next room.
    • Similarly, in the first Diablo, when you finally meet the Archbishop, he stands there and speechifies at you for a good while. Neither side can attack while he's talking, but you can run out of the room, which is recommended as he's accompanied by a number of minions and it's easier to kill him if you've lured them out piecemeal first.
  • In Deus Ex: Human Revolution, when you meet Taggart at the convention centre, no matter how much you may want to kill him, he can't die, even if you unload a full heavy rifle clip into him. He later loses this in Panchaea, when you can kill him if you want.
  • The Elder Scrolls
    • Averted early in the series through Morrowind. The games follow an Anyone Can Die philosophy which, while fitting for an open world game, can easily lead to broken quests (including the main quest). Morrowind, at least, alerts the player when the death of a necessary character has made the game Unwinnable.
    • Starting with Oblivion, the series shifted to marking plot important characters as "Essential". Essential NPCs cannot be killed, only temporarily knocked out, giving them this form of invulnerability. (And in some cases, even after the NPC has played their part, the Essential tag isn't removed, leaving them permanently essential.) This can be abused by the player, such as keeping an Essential follower around by not completing their related quest. The follower will fight alongside the player indefinitely, with the worst that thing that can happen to them being temporarily knocked out.
    • Skyrim offers another means to exploit Essential characters. During the very first main quest mission, "Unbound", you get the option of gaining one of two characters as a follower for the mission's duration. Neither can die, and neither will turn hostile if you attack them. Thus, they can be exploited to train your weapons skills right in the beginning of the game.
    • Skyrim's Dawnguard DLC provides an especially outrageous example with Lord Harkon. You have every reason to kill this madman, but can't until you acquire Auriel's Bow. The bow is not required: in fact, you can give the bow to Harkon, and then kill him anyway.
  • Indie tabletop RPG Fight Item Run has the boss introduce themselves and intentions on the first encounter, and if combat occurs during this exposition, no rolls are required. In the next sentence, it states the full boss's HP is the Boss's health after any damage taken during exposition.
  • In Gothic Gomez cannot be killed until Chapter 4. Same applies to Dragons in Gothic 2 and Xardas, though the latter's death depends on the path the player chooses in Gothic 3.
  • Dubhe, the first major boss of Devil Survivor 2, is the weakest of the daily bosses by any storyline measure — but since it's the first one you fight, it starts the battle immune to all elements including Almighty. Attempting to escape triggers a cutscene blocking your path, followed by (if you're not a pirate) a second one severely weakening it.
    • In the first Devil Survivor, there's Beldr, who was infamous for this and likely inspired Dubhe's scenario. Being based on the Nordic god Baldur and his myth, Beldr was immune to all forms of damage, including the otherwise-unblockable Almighty element. Unlike Dubhe, it isn't that a plot-related event makes him lose his invulnerabilty—it's that the plot leads you to obtain the only way to hurt him: by hitting him with Devil's Fuge—mistletoe. A fake mistletoe phone-strap. He also happens to be weak to it, but you were limited to one character being able to hurt him in this manner, making his already tough boss fight into also an Escort Mission for your protagonist.
    • In the Triangulum Arc included in Devil Survivor 2's Updated Re-release, there's Arcturus, who's battle is best summarized as "Beldr 2.0.". It features many of the same things that made Beldr's battle difficult and more, culminating in having you go and recruit a whole character for the purpose of finally having a way to kill the damn thing. Unlike Beldr, whose immunity was stated in the story and reflected in gameplay-immunity but not shown anywhere in his stat screen other than by blocking all elements, Arcturus's ability explicitly states it is immune to normal attacks; "normal" referring to everything but the Dragon Stream or a being of similar nature to Arcturus.
  • Fire Emblem: Thracia 776 gives a handful of characters a hidden skill that functions like Miracle, but with a 100% activation rate—meaning that while they can take damage, they will invariably dodge any attack that would kill them. This ensures their survival in time for important story beats (most notably Eyvel's petrification). Since the game caps hit rates at 99%, and the biggest offender has an absurdly high dodge rate, an unaware player could easily assume that these characters are just incredibly lucky.
  • In Fallout 3, "essential" characters can only be killed when the quest allows or requires it. You can blow up Sarah Lyons with a barrage of mini-nukes and send her ragdoll hurtling into the next town over, and she'll get right back up in under ten seconds, often not even remaining hostile.
  • Fallout: New Vegas has far fewer characters marked as "essential", with the only exceptions being companions (who lose their immortality on Hardcore Mode) and children. The only character to be gifted with true immortality is Yes-Man, who has an in-story justification; he's a robot, and can therefore just download himself into a new body whenever one gets destroyed. He won't even begrudge you for blowing him up, meaning that a Yes-Man ending is at least possible regardless of how many people you've killed or pissed off.
  • Monster Hunter 3 (Tri): You can encounter the flagship monster of the game, the Lagiacrus, during a mission in the first tier of the game in which most missions consist of gathering materials. Naturally, at this point in the game, even if you have all the best armour and weapons you can have at your level, the Lagiacrus is more than capable of taking you out in one or two hits, plus it can't actually die no matter how much you attack it, making retreat the only option. You eventually face it in a Heroic Rematch in the fifth tier of offline missions, but even when you replay this mission with the best armour and weapons in the game it's impossible to actually kill the Lagiacrus in the time alotted to complete the mission; you can get it to limp, but that's close as you'll get.
  • In Fable, the "hero" and Karma Houdini Reaver cannot be killed, much to the chagrin of many players who felt his actions were at least as bad as the actual villain half the time. The fact that his character was voiced by Stephen Fry gives you some indication that the writers wanted him to stick around despite his obvious evilness. Being forced into being his ally (Fable II) and having him as your advisor (Fable III) just makes things worse. Granted, he's a funny character from the player's point of view, but in a roleplaying sense there is little justification for your character not wanting to kill him, especially given all the times he's tried to kill your character.
  • The Geneforge series has Sage Taygen in game 5. Once he gets down to one third of his health he whips out an item that causes a high-power terror effect in all your Mons and allies, forcing them to flee and letting him escape to his fortress. Or rather, that is the theory. Due to how the Terror effect works and the pathing AI in the game, it's fairly easy for the terrified mooks to block all the exits from the room the fight occurs in, meaning that Taygen just stands there trying to find the path out while you and whatever allies you cured of the terror pound on him. But matter how much damage you do to him he cannot lose his last hit-point, so you have to let him leave in a playable case of Cutscene Incompetence.
  • Notably in Lufia II: Rise of the Sinistrals you actually can defeat the normally unbeatable Gades if you Level Grind like a fiend and bring enough curative items, but he just wails you with a bolt of lightning during the following cutscene and the game acts as if he trounced you anyways from then on out. At least you get to keep his sword, a brutal Disk One Nuke with amazing stats and a deadly IP attack.
  • In Mass Effect 3, Dr. Eva during the Priority: Mars mission. At the end of the mission while you chase after her you can shoot at her but never inflict enough damage to kill her before she gets too far ahead and you lose. Irritatingly, this will not be removed by Vanguard Chargenote , meaning there can be a chase scene with an average distance of 1 meter between the two of you but the story will pretend she was far ahead. One cutscene later, however, you get to "kill" her in slow-mo.
    • Kai Leng has this in every scene you meet him save for the final fight. He also induces Cutscene Incompetence on everyone in the vicinity, so not only can you not hurt him when you do have control of Shepard and his/her squadmates, everyone also forgets how to use their powers and weapons whenever you don't.
  • In Miitopia, no matter how many times your party encounter the Dark Lord, you won't get to properly inflict any damage to him until the obligatory Boss Battle in his castle at Karkaton.
  • Same deal with Gothic's spiritual successor Risen, in which several characters not only can't die, but can't even have their health bars dropped to zero to make them unconscious. This can be a bit of a problem, as the simplest and easiest way to get experience, money, and items is to knock out everybody you encounter at least once only to sometimes find that you've picked a fight with the wrong guy and are now up against a foe you can't actually harm.
  • Batlin in Ultima VII: The Black Gate is invulnerable since he's a badly concealed Dragon to the Big Bad, and they presumably wanted to avoid the option to end the game half an hour in. Lord British is of course always invulnerable to everything except certain glitches and loopholes.
    • This is actually in-universe invulnerability rather than normal plot armor. If you acquire and cast the spell Armageddon, it will kill everyone in Brittania. Except for you, Lord British... and Batlin, who will congratulate you on your monumental dick move if you go back and talk to him.

  • You cannot kill Stephen Tyler in Revolution X. Aim right at him and fire those CD's to your heart's content, and he just ducks and looks stupid.
  • Variation of this in Time Crisis 4 when you're facing Jack Mathers (the second boss). At the start of each life bar, he'll mix it up with William Rush, during which he doesn't attack you at all. It's actually possible (and in fact pretty easy) to do the equivalent of a whole life bar's worth of damage in this time. However, you can only take off the green portion of the bar, about two thirds. The remainder doesn't turn green until he starts attacking you. Obviously this was done so all the action and dialogue between Mathers and Rush would be completed (and so there'd actually be some challenge to this battle, of course). This is true of the other bosses, but Mathers is the most blatant example. This also happened in Crisis Zone, and previous Time Crisis games, but that was just so the bosses would live long enough to use all their attacks.
  • In the Atari Star Wars arcade game, Darth Vader's fighter is indestructible, though it can be shot for points.
  • In Star Wars: Rebel Assault, during the Battle of the Death Star, Rookie One (you), Ru Murleen, and another pilot are teamed up as Expies for Luke, Wedge and Biggs. If, for some reason, the third guy is killed before you make your attack run, Ru declares that your run won't work and the scene resets. (The Biggs Expy needs to be alive to be shot down later.)

  • Ace Combat examples:
    • While Captain Hamilton's MiG 1.44 can be "shot down" in the penultimate mission "Aces" of Ace Combat 5: The Unsung War in the sense that the player will receive credit for the "kill," he doesn't actually go down, as he has to tail and attack your flight throughout the climactic tunnel chase. (Since this is from behind, he's unattackable and can only be fought before destroying of the enemy ground targets and triggering the tunnel opening.)
    • In Ace Combat 04: Shattered Skies, the Yellow Squadron are invincible until the Stonehenge mission. If you hit them in various missions (like the titular mission 8, Shattered Skies), they will comment, asking "who was it that shot me?" They only exit the battle, but you can't ever shoot them down until the mission at Stonehenge.
    • In Ace Combat: Joint Assault Varcolac Squadron have the same deal; you won't actually kill any of them until the final mission.
  • From Wing Commander II onwards, instead of dying, as in the first game and its addons, your wingmen can always eject... unless the plot requires that they die.

    Third Person Shooter 
  • In Syphon Filter, for no apparent reason (no full body armor here), Rhoemer is immune to bullets, even headshots and explosions, and can only be killed with gas grenades. Perhaps this is to prevent you from killing him too soon.
    • Similarly, with the fully-armored Anton Girdeux, the back of his head is unarmored, but you can't hit him there either. That would be too easy.

    Turn-Based Strategy 
  • Yggdra Union very often has this, and in multiple versions to boot. The most common one is by merely preventing a character's morale from hitting zero until the objective is to defeat them. This generally only applies to important characters, so Butt-Monkey Izanagi or the character's supporting forces can still be forced to retreat. The second is providing a full morale restore at the start of each of the enemy's turn. This also applies to their supporting forces, meaning you'll need to hit hard and make the best of your Unions if you want to defeat them. But even then, the boss still has the morale protection. On the bright side, you can still get a total of 119 attack points for your cards out of them.

    Wide Open Sandbox 
  • The Grand Theft Auto games feature this constantly. You're often supposed to chase down somebody, but their cars will be completely impervious to your bullets. You can't kill them until you reach a cutscene and the story says its okay.
    • A specific example of this is the last "Revenge" mission of Grand Theft Auto IV: when chasing down Pegorino on-foot, players can try firing a rocket launcher into his getaway boat before he gets into it. Instead of it exploding like all vehicles do under normal circumstances, it just triggers the in-game event of him getting in and speeding away.
    • Grand Theft Auto: San Andreas has the "OG Loc" mission, where you can shoot at Freddy while chasing him by motorcycle, but you can't actually kill him until after the chase.
    • Another example in Grand Theft Auto IV was when an enemy needed to be chased through a warehouse to to the rooftop where the player needs to shoot down the helicopter that comes to pick him up. At several points the enemy NPC got stuck on parts of the scenery long enough that several clips worth of ammunition could be emptied into him with no effect whatsoever.
    • Averted at one point in San Andreas, an assassination mission can be made significantly easier by shooting out the tires of the target's getaway car before the mission begins.
    • GTA IV is particularly egregious as there are more than a dozen missions where the target vehicle is invincible until it passes a certain point in the map, at which point it abruptly becomes vulnerable and you need to blast it to bits to finish the mission. The annoying thing is that the game never indicates (i.e. with text or a cutscene) when the vehicle has suddenly become vulnerable, leaving you to simply shoot at it intermittently during the chase until it actually starts taking damage.
    • At least with the games running on the GTA 3 engine some dedicated players have turned this into their advantage by figuring out methods to gain use of the bullet/flame/explosion/collision-proof cars. Some common aspects are that otherwise indestructible cars are still vulnerable to being run over by a tank, and pushing the charred wreck into a garage will restore it once the door closes. The garage will also unlock the doors of the car, and vehicles like these are usually locked to prevent player use.
    • Grand Theft Auto: Vice City averts this in the final mission- you can actually shoot Lance before he makes his way up the stairway.
  • Scarface: The World Is Yours: When you finally fight Gaspar in the final mission, he can take any number of shots as you chase after him until you finally corner him in a certain room.

  • Mocked on 30 Rock. When Jack tried to kill off the Generalisso, a villain character on a telenovela his girlfriend's grandmother watches, the actor refuses to play along. While the actress who was supposed to kill him fires a prop gun with blanks, the Generalissimo simply laughs "You missed!" over and over.
  • Stand-up comedian Hannibal Buress discusses the trope here, talking about how he likes to play Grand Theft Auto and go on dates with women in the game:
    I bought an outfit, I thought the video game girl would like it... I pick her up she's like "Your shirt is ugly! Your pants suck, and your shoes are awful!" So I got out of the car, and I shot her in the face... But you can't kill that girl because she's part of the storyline, so when you shoot her in the face she just goes "You being weird!" and she runs away. I'm being weird? I feel like you're being weird because I just shot you in the face and you didn't die. You treated it like it was annoying like I farted or something. I'm not judging, I just feel like you should have been more forthcoming about your immortality is all I'm saying.
  • Monster of the Week has this as a gameplay mechanic. Every monster has a single Weakness, and unless you find out the weakness and use it, you cannot kill the monster. You can drop them to 0 HP, but they will always somehow survive unless you make use of the weakness when you do so.