The UltimateBlacksmith sends you out to hunt monsters because he wants to forge you something good but needs rare materials [[RandomlyDrops randomly dropped]] from enemies located around the world. And when you bring them back he forges you... a shield? What about the InfinityPlusOneSword? [[PowerUpLetDown You wanted a sword]]! In the [[BonusLevelOfHell Bonus Dungeon of Hell]], you just beat the {{That One|Boss}} {{SNK|Boss}} BonusBoss and open the chest behind it to find... a suit of Diamond armor, what the hell? Well you put so much work into finding it, may as well equip it. So you go into the menu and highlight this new item and... oh. ''Oh!''

I'm sorry, did you just say the armor is [[Advertising/TheManYourManCouldSmellLike made of diamonds]] or [[MadeOfWin WIN]]!?

You just won the Armor of Invincibility, the best defensive item in the game, bar none, with stats far surpassing the other equipment pieces you can expect to find, and may offer protection from StandardStatusEffects and ElementalPowers. DemonicSpiders don't even dent it, and even the {{Boss Battle}}s have become {{Curb Stomp Battle}}s with it on. This is the shield to go in your other hand while you grasp the InfinityPlusOneSword in the other. As with the Infinity Plus One Sword, the only real drawback is that you'll be required to sink hours into finding the Armor of Invincibility, maybe even doing ThatOneSidequest. May just be a BraggingRightsReward. Or, if you plan to face the BonusBoss, it may be a requirement to avoid getting killed in one hit.

Contrast ArmorIsUseless.

* Shardplate in ''Literature/TheStormlightArchive''. Not only can it take absurd amounts of physical damage and mend itself by consuming {{Mana}}, it is also one of only two things that can block a [[SoulCuttingBlade Shardblade]], with the other being a different Shardblade. In addition, it makes its wearer immune to Surgebindings and Voidbringer special powers, such as stormform's ability to throw lightning.
* Thanks to having an extremely powerful spirit called an Akari dwelling inside it, the Devil's Armor from ''The Lukien Series'' by John Marco makes the wearer impossible to kill. Not only is the armor impossible to breach, it also greatly strengthens the wearer to the point where a charging cavalryman's lance shatters on the breastplate and the wearer doesn't even flinch.

* ''Series/KamenRiderWizard'''s SuperMode is Infinity Style - a suit themed around diamonds and completely impervious to attacks by any Phantoms save for [[BigBad Wiseman]] himself. Comes with FlashStep capability, too.

[[AC:Tabletop Games]]
* ''MagicTheGathering'' has a few equipments and effects that grant invincibility to the equipped creature. The most fitting one is [[ Darksteel Plate]], an indestructible suit of armor which makes the creature wearing it equally indestructible. There are ways around this effect (Exile and Sacrifice), but most standard removal spells won't make a dent in the armor nor the creature.
** There's also the pricier and legendary [[ Shield of Kaldra]]. The only advantage it has over the Plate is that it's part of a set of items and also makes other items of its set indestructible.

* ''VideoGame/CastlevaniaCircleOfTheMoon'' has two examples. The first being the "Shinning Armor" which boosts all your stats in addition to its outstanding defense. To get it, you have to beat [[BonusDungeon The Arena]], a gauntlet filled to the brim with DemonicSpiders that you cannot use magic in. Its counterpart, the Dark Armor, boosts defense even more, but actually cuts the rest of your stats. It's also simpler to acquire, being a simple drop (albeit one from a somewhat rare enemy).
* ''VideoGame/ChronoTrigger''. In the DS version's "Lost Sanctuary" side quest, if you find a very rare, hard-to-beat opponent (or steal its item), you can get Lumicite. Give this to a particular NPC and he crafts you armor which grants Lucca (and only Lucca) 100% elemental resistance to ALL elements.
* ''VideoGame/TheElderScrollsIVOblivion'', the player can enchant pieces of clothing with resist damage effects or resist elemental damage effects that resist both damage from the elemental effect and normal damage. One can enchant clothing with chameleon effects which cause partial invisibility. A character can wear gauntlets, boots, greaves, a cuirass, and a helmet or hood as well as a necklace and two rings. Enchanting enough armor or clothing with damage resistances can result in a suit of 85% damage resistant armor. True invincibility can be attained by enchanting enough pieces with chameleon which will make the player [[GameBreaker totally invisible]].
** Or 100% Reflect Damage, which nullifies every attack that is done to you, and reverses it on the attacker. Only way to die now is via magic or [[AnnoyingArrows arrows]]. And you can very easily make a custom enchantment that reflects all magic at the caster. So... all that's left are arrows, which, by the end of the game, ''can't hurt you''. At all.
** ''Skyrim'', has the same enchantment processes, but the developers kind of nerfed the extremity of such armors. There are some things that are close, such as "Legendary" (after enhancing the armor with extremely high level smithing which has to be increased further by using blacksmithing potions and smithing increasing equipment) Dragon Bone equipment that has been enchanted with high level defense increase.
*** Apparently the developers were paying attention to what people did in Oblivion as all damage resistance in Skyrim caps at 85%. For references its about 560-odd points of armor, a number quite easy to get on steel armor (one of the most basic types) with a decent skill in armoring. Its is possible to get about 97% resistance to magic by combining a resist magic and a resist [fire/frost/lightning] enchantment. This however would take up a lot of enchantment slots leaving little to no room for other, arguably more useful enchantments.
*** There are also racial bonuses that can actually stack on enhancements. A Nord has a bonus of 50% resist cold, meaning frost magic damage will be half as effective on you. Then equip armor that has been enchanted with the highest level resist cold and you'll be at the range of being completely invulnerable to cold damage. However, you'll still get smoked by Fire and Lightning element magic and that nasty Giant would just clobber you to the moon in 1-hit.
*** Archers in in Skyrim, however... will kill you just as easily as you level up. It doesn't matter if you are wearing the all-powerful custom armor or block with a shield; it's all the same to the archers (unless you've been increasing your shield proficiency as well or you avoid the arrows completely). Something to be said about your enemies getting stronger as you do...
* ''VideoGame/FinalFantasyIV'', the Adamant Armor has 100 defense, resists almost all status ailments and elemental damage, and gives a big boosts to stats. Finding it requires you to find the Pink Puff randomly in a single room in the final dungeon, win the Pink Tail from it which drops very rarely (combined with the puff's rarity each encounters has less than a 1/10000 chance to get it) and then trade it for the armor.
** The Advance release introduced the Hero's Shield, the spiritual sucessor to the Paladin's Shield (see below) which is won from a BonusBoss in the BonusDungeon, while the the DS release introduced a whole subset of this called Onion Equipment. Like the Adamant Armor you need to collect tails randomly dropped from enemies.
* ''VideoGame/FinalFantasyVI'' has the Paladin Shield, which has 59 defense and magic defense, boosts evade and magic evade by 40%, and nullifies or absorbs all elemental damage. Not only that, but it is also the only item in the game aside from the Ragnarok magicite that teaches you the [[GameBreaker Ultima]] spell. To get it though you need to [[LevelGrinding fight 256 battles]] equipped with the [[MagikarpPower Cursed Shield]], which has terrible stats and inflicts ''all'' status ailments on the wearer.
** With a defense rating of 128, the Snow Muffler gets you more than halfway to the max possible defense rating, and with a decent helmet and shield most attacks will only do 1 damage to you.
* ''VideoGame/FinalFantasyVII'' gives us the Ziedrich, which has 100 defense, halves all elemental and physical damage, boosts your stats and can only be stolen from three bosses (well, technically, the [[GoldfishPoopGang same boss]] three different times), one of which can be missed entirely. The catch is that it has no materia slots, making it of somewhat dubious value.
** There's also the Mystile. While it doesn't gives the highest defense, it has huge evasion bonuses and 3 pairs of materia slots. You can only find it in 2 chests, but there's a GoodBadBug that allows you to get a third.
* Due to the fact that all equipment in ''VideoGame/CrisisCore'' is accessories but often possess the names of common ''Franchise/FinalFantasy'' armor (including the Ziedrich mentioned above), the high-tiered accessories are either this or {{Infinity Plus One Sword}}s: most of the best ones give you all positive status effects in the game, massively boost your stats, absorb all elemental damage, and [[DoomedByCanon if the plot didn't have anything to say about it]], would easily make Zack the most powerful being in the Videogame/FinalFantasyVII universe by the virtue of his stats alone.
* ''VideoGame/FinalFantasyIX'' has the Tin Armor, which can only be acquired by defeating a BonusBoss and having him synthesize it from two items, one of which is incredibly common and the other of which can only be acquired by doing a lengthy sidequest.
* The Armor of Invincibility in ''VideoGame/FinalFantasyXII'' is exclusive to the Japanese-exclusive re-release, the Gendarme. It boosts evade and magic evade by 90 and resists all forms of elemental damage.
* ''VideoGame/FinalFantasyTacticsA2'' has the Peytral, a heavy armor that provides one more point of defense for every time you use a randomly available "Opportunity" action (even before you get it). At its lowest it's already one of the best, but at its max it provides more than twice as much as the next highest.
* Nearly all ''Franchise/FinalFantasy'' games have a helmet or accessory called the Ribbon. While it usually doesn't have the best defense bonuses, in almost all games it makes you immune to most or all StandardStatusEffects, usually including instant death. In the few games it doesn't, it cuts elemental damage significantly. Usually that makes it the single best accessory or helmet in the game. In games where its use is [[GenderRestrictedGear gender-restricted to females]], [[YouHaveResearchedBreathing there is usually an expensive, top-tier ability for males to learn that will allow them crossdress and to wear it too]].
* In most given ''KingdomHearts'' games, odds are that the Ribbon will be the best equipment available. It usually has the best defensive boost of any armor and also gives resistance to all elemental damage.
* In the ''VideoGame/{{Fallout}}'' series, odds are that the Armor of Invincibility is some kind of [[PoweredArmor Power Armor]], though the exact make and model vary from game to game.
** The original game has the hardened power armor. The second game has the advanced power armor [=MkII=]
** The Winterized T-51b armor from ''VideoGame/{{Fallout 3}}'''s Operation: Anchorage DLC not only has the second highest DR in the game, but has astronomically high condition HP and will not significantly degrade over the course of gameplay, apparently due to the developers [[GoodBadBugs accidentally]] putting the simulation version in the armory instead of a normal degradable version. Next in line is the Enclave Hellfire Armor from ''Broken Steel'', which has the same DR as the base game's T-51b, but unlike that, can be fully repaired with other suits of its kind, and has a strength bonus along with increased fire resistance.
** The Gannon Family Tesla Armor in ''VideoGame/FalloutNewVegas'', obtainable from Arcade Gannon at the end of his companion quest, is the only Medium-weight PowerArmor in the game, which means significantly less speed penalty than the normal power armors, which are classified as Heavy.
*** From the ''Dead Money'' DLC, the Reinforced Sierra Madre Armor has the highest DT of all Light armors, only one point less than the Medium-weight Reinforced Mk II Combat Armor, which is the strongest non-DLC non-power armor.
* ''VideoGame/SuperMarioRPG'' has the Lazy Shell, the best armor in the game bar none. It ''does'' do terrible things to the wearer's non-defensive stats, but put it on [[WhiteMagicianGirl Princess Toadstool]], who has no real place doing anything but healing anyway, and it becomes basically impossible to lose a fight.
** There is also an accessory version in the [[ScarfOfAsskicking Rare Scarf]], which boosts both defensive stats. Combine the two, and [[StoneWall damage isn't going to be much of a concern]]. All you'll ever need to look out for is [[StandardStatusEffects Silence]] and [[BalefulPolymorph Mushroom]], since everything else is swept away by [[TheMedic her healing]] anyways.
* Franchise/{{Pokemon}} has the infamous "Curselax" set in its Gameboy Colour and Gameboy Advance releases, which lowers your speed (which Snorlax doesn't care about in the first place) tremendously, but improves Snorlax's mediocre defense, which only aids his phenomenal special defense. It doesn't hurt that it raises its attack too, making it something of a {{gamebreaker}} in those generations.
** Many moves raise defenses, including Cosmic Power, Quiver Dance and Bulk Up to name a few. The stand-out for pure defense though is Cotton Guard, which grants +3 stages of increase to defense, when the max increase is +6 stages of increase. Each stage raises defense by 50%, and stacks additively, meaning you'll have quadrupled your defense after two uses of the move.
* ''VideoGame/StarOceanTheSecondStory'' has the Bloody Armor, which has seemingly low stats and constantly drains your health at an astounding rate, but wearing it makes you immune to any and all damage and keeping up with the constant HP drain isn't that much of an issue with an assigned healer.
* The Fusion Helmet in ShadowComplex. You're required to scour the map for all the passkeys, but if you get it, you take little damage from most attacks. Better yet, if you are completely still or moving VERY slowly, you gain a forcefield, making you pretty much completely immune to every attack in the game.
* The Body Armor in ''VideoGame/VampireTheMasqueradeBloodlines''. It is only obtainable in the endgame sequence, and even then [[GuideDangIt only at one point in-between missions with no prior clue to your opportunity to get it]]. The actual acquiring is quite simple though, as you only need to talk to your ghoul to get it. If you do get the body armor, you'll be pleasantly surprised to find it gives 4 damage soak to bashing and lethal, render you nearly immune to most melee weapons or small arms fire the game will throw at you. However, it does nothing for the aggravated damage dealt by many of the enemies you'll meet in melee during the endgame, which is to say most of them from that point onward.
** As a note, a fan-made post release patch, in addition to covering a host of bugfixes and other minor gameplay tweaks, allows such armor to be purchased from a vendor later in the endgame if the player missed it the first time. However, it will cost a lot of money.
* ''VideoGame/{{Minecraft}}'' has armor crafted from diamonds. However, you'll need a ''lot'' of diamonds; even basic boots will take four diamonds to make, let alone breastplates or pants.
** The 1.0 release had a bug where damage reduction from armour was applied twice, making a player wearing a full suit of diamond practically invincible. This greatly impacted on the strategies employed during the first reddit "race for wool" tournament as obtaining diamond armour or denying it to the other team would often decide the match.
** ''Industrial Craft 2'' (which is also part of ''Tekkit'') features Quantum armor. By spending the time to get several lapis power gems that require diamonds, iridium plating that requires an immense power source for a matter generator and Nano armor requiring carbon fiber and power gems, you can get a full set of armor that allows you to run extremely fast, jump really high, your hunger never goes down and damage is negated to the point that you can ''swim in lava'' as long as the power source lasts. It's easy to charge as well if you have several HV Solar Arrays connected to a MK-3 Charging Bench.
* ''VideoGame/DragonAgeOrigins'': The Shimmering Shield buff grants a frankly preposterous armor bonus of 15 (a full set of top-tier massive armor gives 32), ''maxes out '''all''''' elemental resistances, and gives gigantic bonuses to mental and physical resistance checks. It's Shimmering Shield that makes ''mages'' the best tanks in the whole game.
* ''VideoGame/TheLegendOfZeldaSkywardSword'' has the Hylian shield, which is protected from both fire and electric attacks, and is the only shield in the game that won't break if it takes too much damage.
** ''[[VideoGame/TheLegendOfZeldaTheWindWaker Wind Waker]]'' also had a set of magic armor that rendered Link invincible, at the cost of constantly draining his magic for as long as it was active. Magic Armor (this time an actually item you change into instead of a magic covering put over you) is also in ''[[VideoGame/TheLegendOfZeldaTwilightPrincess Twilight Princess]]'', this time draining Rupees (both over time and with damage taken) because the game didn't have a magic meter.
* All three of the ''Franchise/AssassinsCreed'' games starring Ezio Auditore features a set of special armour that gives you the highest HP rating in the game and is also completely unbreakable. In ''VideoGame/AssassinsCreedII'' and ''VideoGame/AssassinsCreedBrotherhood'', getting the Armours of Altair and Brutus took most of the game, but in ''VideoGame/AssassinsCreedRevelations'', it's possible to gain one of TWO such suits by the second memory sequence, making it a veritable DiscOneNuke.
* ''VideoGame/TheLegendOfDragoon'' had Legend Armor and Legend Casque which reduced physical and magical damage respectively to roughly 1/5th of what it would normally do on top of giving you 50% chance to dodge said damage. The catch? Each cost 10,000 gold, and every enemy that wasn't a MetalSlime or a boss dropped 30-50+ gold at best.
* Adamantine armor in ''VideoGame/DwarfFortress'' can be this way, enhanced greatly by being masterwork quality or the even better artifact quality (which multiply the chance of deflecting attacks by double and triple, respectively). The material property-based damage logic can make it a little more complicated, though: adamantine is unbreakable, but adamantine clothe provides little protection from blunt attacks. Even rigid adamantine armor isn't very good against blunt damage and terrible against blunt projectile's because of its low density. And for some reason, whips basically ignore ''every'' armor almost entirely.
* Full steel plate armour in ''VideoGame/MountAndBlade'' is the most expensive item in the game by a considerable margin. [[GameBreaker However]], it ''completely negates'' all damage made by handheld weapons and even the really heavy crossbows and warhammers used by expensive mercenary troops struggle to penetrate it. TruthInTelevision, European plate armour really ''was'' that effective.

* In ''Webcomic/EightBitTheater'', obtaining the Armor Of Invincibility was Fighter's original goal. He did obtain the ''Armoire'' of Invincibility, which proved equally invincible (except the cork bottom) but significantly less useful.
** [[spoiler:[[BookEnds Also his final goal as the comic ends.]]]]

* The Apex Armor from ''WesternAnimation/TransformersPrime''. Able to repel everything from swords, laser fire, and even point blank explosives. And of all the bots it could go to, it winds up in [[spoiler: Starscream's]] clutches. It's only real drawback is its lack of built in weaponry which, given the [[SuperStrength greatly enhanced strength]] it provides the wearer, is a minor concern.
* The Two-Ton Tunic from ''XiaolinShowdown''. Wearing it pretty much makes you invincible, as attacks don't go through and it's weight makes you stand your ground without even trying. On the flip side, you won't be moving anytime soon.
* In ''WesternAnimation/GaltarAndTheGoldenLance'', the Sacred Shield that [[BigBad Tormack]] stole from Princess Goleeta's family is capable of blocking anything, even the Golden Lance's energy beams.