'''Basic Trope''': Monsters and other villains tend not to be hurt by firearms.
* '''Straight''': Bullets fired at the monster are shrugged off.
* '''Exaggerated''': The monster shrugs off not only bullets, but also grenades, artillery shells, and tactical nuclear weapons.
* '''Downplayed''': Only special bullets are effective against them.
* '''Justified''':
** The monster is incorporeal, so of course guns can't hurt it.
** Alternatively, it has a million hit points.
** Or: Its a huge monster with thick skin. The bullets barely penetrate, and, even if they did, the scale is just so massive that a normal-sized bullet can't do any real damage.
** They're just that [[SuperToughness tough]].
* '''Inverted''':
** [[KineticWeaponsAreJustBetter Projectile guns harm the monster]], [[RockBeatsLaser while more futuristic weapons such as lasers and particle beams do not.]]
** Assailing the monster in melee or [[NukeEm bigger]] [[WaveMotionGun weapons]] does not work. Small arms, though? Just peachy.
* '''Subverted''':
** All the research the heroes can do suggests that guns are useless, but that turns out to be misinformation put out by the OmniscientCouncilOfVagueness to make the monsters seem more scary.
** The bullets actually ''tickle'', and with [[MoreDakka enough firepower]], the army is able to tickle the monster into submission.
** TheHero and TheLancer are not able to destroy it. However TheBigGuy comes in backed by a bunch of [[GiantMook Giant Mooks]], all wielding {{BFG}}s. The Monster drops quickly.
** They had bullet proof vests on.
* '''Double Subverted''': Turns out the OmniscientCouncilOfVagueness goofed-- the monsters ''really are'' ImmuneToBullets.
* '''Parodied''':
** Just because the monster can't be killed by gunfire, doesn't make the bullets hurt any less.
** Alternately, the monster is ''exclusively'' immune to bullets.
* '''Zig Zagged''': Whether or not bullets work changes with each MonsterOfTheWeek.
* '''Averted''': The monster can be harmed by gunfire.
* '''Enforced''': "The MoralGuardians won't let us use anything that looks like a real gun on a kids' show, so we'll make all our villains immune to gunfire as an excuse for giving our heroes lasers."
* '''Lampshaded''': The hero unloads his pistol into the monster to no effect, shrugs, and says, "Why do I even bother?"
* '''Invoked''':
** The MadScientist realizes that his enemies' first reaction will be to shoot the monster he's creating, so he ''makes'' it ImmuneToBullets.
** Alternately, gun companies make their guns less powerful so as to make the bullets penetrate shallower or not at all.
* '''Exploited''':
** A company that makes laser weapons, markets them to the army by saying "The monsters may be bullet proof, but this is not a bullet".
** Seeing as bullets don't work, the group relies upon adhesive foam and tazers to get the job done.
** [[SuicidalOverconfidence The monsters don't bother dodging because of their immunity]], which leaves open to other kind of offensives.
* '''Defied''':
** "This is the most powerful gun in the world. ''Nothing'' is immune to this baby."
** Alternately, a scientist makes his monster possible to kill with bullets because a killing machine was not his intention (or because he's worried about his killing machine turning on him).
* '''Discussed''': "You know how the monsters in all those disaster movies are always immune to bullets? That's not entirely inaccurate..."
* '''Conversed''': "Geez, why do those guys in disaster movies always shoot at the giant monster? It never works!"
* '''Deconstructed''':
** The uselessness of bullets leads to an increasing reliance on heavy weaponry by the monster hunters, which in turn breeds monsters who are even tougher, creating an escalating cycle of violence and lots of collateral damage.
** Casualties and quitting among law-enforces and soldier skyrocket because their weapons are useless against the monsters, leading to even more depression and fear.
* '''Reconstructed''':
** The monster is only one of several antagonists, the rest of whom are not bulletproof, making that monster a special threat.
** Another option is that the monster gets stronger, but the heroes are adaptable and intelligent, leading to a LensmanArmsRace.
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%% Optional items, added after Conversed, at your discretion:
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%%* '''Implied''': ???
%%* '''Plotted A Good Waste''': ???
%%* '''Played For Laughs''': ???
%%* '''Played For Drama''': ???