[[quoteright:330:[[Creator/MarvelComics http://static.tvtropes.org/pmwiki/pub/images/Screen_shot_2011-01-05_at_10_57_13_PM_2059.jpg]]]]

A SupervillainLair (or a Hero's Headquarters) At Sea! Isolated from any inference of those pesky heroes, our resident baddies can concoct their schemes of world domination in peace. At least until the third act.

Bonus points if the island, or part of it, is shaped like a skull. Extra points for [[VolcanoLair having an active volcano form part of the base]], despite the [[ConvectionSchmonvection obvious problems with heat]] keeping such things from being practical in real life.

A SubTrope of IslandOfMystery.

Often equipped with a DenOfIniquity. See also ElaborateUndergroundBase, UnderwaterBase.

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!!Examples:

[[foldercontrol]]

[[folder: Anime and Manga ]]
* ''{{Cyborg009}}'': An IslandBase showed up in the first episode of the anime. It was used by two {{Mad Scientist}}s like their MadScientistLaboratory.
* ''Anime/MazingerZ''. BigBad and MadScientist Dr. Hell had two {{Island Base}}s: Bardos, an ancient Greek island full of underground mazes and labyrinths where he found an army of HumongousMecha: and Hell Island, an island near from the Japanese coast where he moved later in the series. It was a barren, rocky islet. A low mountain rose in the center, and several giant faces had been carved on its slopes. TheDragon Baron Ashura also had an IslandBase doubled like a CoolShip: the submarine fortress Salude.
* ''GreatMazinger'': Marquis Janus' HomeBase was at once a CoolShip (it was mobile and could swim or dive underwater), an IslandBase (it was shaped like an island) and a VolcanoLair (an artificial volcano had been built in the center).
* Mewtwo from ''Anime/PokemonTheFirstMovie''. To add to the sinister atmosphere, it was built on the wreckage of the lab - where he was created - that he blew up a few months earlier.
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[[folder: Comic Books ]]
%% The following {{Zero Context Example}}s have been commented out and copied to Discussion. Please don't add them back to the page unless you add enough information to explain how they're an example of the trope.
%% * ComicBook/{{Blackhawk}} Island.
%% * The Triskileon in ''TheUltimates''.
* WonderWoman and her race of Amazons live in a secret island.
* Oolong Island served as a think tank for a number of [[MadScientist Mad Scientists]] in the DCUniverse. It is now where the Comicbook/DoomPatrol are based.
* Monster Isle is the base of operations of the Mole Man in ''Comicbook/FantasticFour''
* The ''Comicbook/TeenTitans''' Titan's Tower is on an island.
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[[folder: Fan Works]]
* FanFic/DungeonKeeperAmi features several- all of which score bonus points for covering the active volcano, skull-shaped cave, and so on. Just not all at the same time. Zarekos' Islands were riddled with lava-filled fissures, due to the tremendous dark energy contamination, which Ami inherited from him, following his deafeat. Ami, [[GuileHero naturally]] repurposed them for use as geothermal plants. Later, the battle of Dreadfog Island takes place on an island in a large swamp- and the island sports a skull-shaped cave incorporated into the fortifications.
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[[folder: Film ]]
%% The following {{Zero Context Example}}s have been commented out and copied to Discussion. Please don't add them back to the page unless you add enough information to explain how they're an example of the trope.
%% * [[StealthPun Nomanisan]] in ''TheIncredibles''.
* Most notable examples are with ''Film/JamesBond'' villains.
** Film/DrNo's Base was on Crab Key, albeit more of an ElaborateUndergroundBase.
** ''Film/YouOnlyLiveTwice''. Blofeld's rocket base is under an extinct volcano on the Japanese island of Matsu.
** Blofeld held headquarters on an oil rig in ''Film/DiamondsAreForever'', technically an island.
** Kananga's island of San Monique in ''Film/LiveAndLetDie'', but it isn't really isolated: it has a tourist trade. Too bad - poppy fields, voodoo totems with guns, Baron Samedi, and a SharkPool.
** Francisco Scaramanga's private island is probably the best example of the trope in ''Film/TheManWithTheGoldenGun''.
** Stromberg's Atlantis base in ''Film/TheSpyWhoLovedMe'' was a giant floating platform.
** Silva's island in ''Film/{{Skyfall}}'' [[GhostTown used to be inhabited]], until he faked a chemical leak, causing the inhabitants to evacuate.
* Dr. Totenkopf's island base in ''Film/SkyCaptainAndTheWorldOfTomorrow'' (2004), complete with robots, [[spoiler:prehistoric animals and a space ship]].
* Galaxy Island in ''Film/OurManFlint''. Brainwashed women, a WeatherControlMachine and an anti-American eagle.
* Captain Nemo's island headquarters in the Disney version of ''Film/TwentyThousandLeaguesUnderTheSea''. Volcanic crater, submarine docking facilities and SelfDestructMechanism.
* ''Film/{{Yellowbeard}}''. El Nebuloso's island, with a castle full of murderous monks.
* The Nazi-controlled island in ''Film/RaidersOfTheLostArk''. Submarine docks, and an area where you can perform Jewish rituals. Watch out for [[YourHeadASplode exploding heads]].
* Baron von Frankenstein's island in ''WesternAnimation/MadMonsterParty''. He has a castle where he performs bizarre experiments.
* ''Film/UndercoverBrother''. The Man (head of a white racist organization) has his secret fortress built on an island.
* In the ''Film/AustinPowers'' series, Dr. Evil once held operations inside a volcano shaped like his head which was key geographical icon on a Caribbean island.
* ''Film/SpyKids 2'' had an island with a hidden base inside the volcano, and gengineered monsters running around.
* ''Film/JurassicPark''. The title amusement park is built on an island.
* ''Film/BlackDynamite'' faces foes on both Kung-Fu Island and Slave Island.
[[/folder]]

[[folder: Literature ]]
%% The following {{Zero Context Example}}s have been commented out and copied to Discussion. Please don't add them back to the page unless you add enough information to explain how they're an example of the trope.
%% * ''Literature/JurassicPark''
* Most of ''Billy & Howard'' and ''{{Duumvirate}}'' take place on one of these.
* "Lincoln Island" is the headquarters of Captain Nemo and the harbor of the Nautilus in ''Literature/TheMysteriousIsland''.
* In ''Literature/TheIslandOfDoctorMoreau'' by H.G. Wells, the eponymous island, where Dr. Mpreau performs his experiments with human mutation.
* In ''Literature/The39Clues'' universe: the Ekaterinas had a island base inside the Bermuda Triangle.
** [[spoiler: The Madrigals]] have Easter Island as a base.
** There's also the [[spoiler: Cahill ancestral home]] and [[spoiler: the Gauntlet]], on an island off the coast of Ireland.
* In ''Literature/SoonIWillBeInvincible'', Dr. Impossible used the same island base for 14 years before the heroes finally cracked it. At the climax of the novel, he returns to construct his new DoomsdayDevice in the ruins.
* ''Literature/TheMostDangerousGame''. General Zaroff has Ship-Trap Island, where he passes the time hunting humans.
* In ''Literature/WarriorCats'', [=RiverClan=] makes camp on an island. That is until they are forced to move out of the Old Forest and travel to the lake, where they get a new, not-really-islandy camp. But they make up for it in ''Dark River'' when they [[spoiler:take over the Gathering Island due to their current camp being unavailable to them.]]
* ''Literature/{{Swellhead}}''. The protagonists are sent to investigate strange events on the long-deserted and distant island of Skerra, somewhere on the ill-defined border between Britain and Island which for historical reasons even has a monarchy (not that she's ever set foot on the island before now) and is therefore an independent nation. Turns out an ElaborateUndergroundBase has been discovered on Skerra, despite the sheer impossibility of constructing one without vast resources and public knowledge. One which, as they delve further into it, looks increasingly like a classic SupervillainLair...
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[[folder: Live Action TV ]]
%% The following {{Zero Context Example}}s have been commented out and copied to Discussion. Please don't add them back to the page unless you add enough information to explain how they're an example of the trope.
%% * ''{{Lost}}''.
%% * Heroic Example: Tracy Island in ''Series/{{Thunderbirds}}''.
* The island of MadScientist Dr. Boris Balinkoff in the ''Series/GilligansIsland'' episode "The Friendly Physician". He has a castle where he performs experiments on the castaways.
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[[folder:Pinball]]
* In ''[[VideoGame/ProPinballFantasticJourney Pro Pinball: Fantastic Journey]]'', the evil General Yagov operates out of an Island Base as he threatens to [[DetonationMoon destroy the Moon.]]
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[[folder: Tabletop Games ]]
* ''TabletopGame/{{Champions}}'' adventure ''The Island of Doctor Destroyer''. The title island Destruga holds the secret base of Doctor Destroyer, from which he plans to launch the Hypnoray satellite and MindControl the entire world.
* ''TabletopGame/{{GURPS}} Illuminati''. One potential location for the Illuminati main base is on a private secret island that has been erased from the world's maps. It could even be in the Bermuda Triangle - the reason so many ships and planes have disappeared there is because they got too close to the Illuminati base and saw something they weren't supposed to see.
* ''TabletopGame/HollowEarthExpedition''. If a character has the Resource of Refuge 5 they have a secret island base with everything they could want.
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[[folder: Video Games ]]
%% The following {{Zero Context Example}}s have been commented out and copied to Discussion. Please don't add them back to the page unless you add enough information to explain how they're an example of the trope.
%% * The ''Franchise/JamesBond'' game ''VideoGame/{{Nightfire}}''.
* ''Videogame/FurFighters'' has the last level set in a ''Film/JamesBond'' parody Island base...just off the coast of your hometown.
* ''Videogame/MegaManBattleNetwork 3'', the WWW has their base on an island, across the Demon Waters.
* ''Videogame/{{Metal Gear Solid}}''
** Shadow Moses Island is indeed an island - something the players (and at one point even Snake) needed to be reminded of.
** VideoGame/MetalGearSolidPeaceWalker's Mother Base can become this with time.
* In ''Videogame/PhantomBrave'', [[MessianicArchetype Marona]] lives on an island all to herself, called Phantom Isle, which she uses as a base. The BigBad, Sulphur, also has [[{{Mordor}} an island of his own]], called the Island of Evil, which [[SealedEvilInACan he is sealed in]].
* Franchise/{{Sonic}}
** Prison Island in ''Videogame/SonicAdventure2'', though that's likely based off the concept of Alcatraz.
** The Veg-O-Fortress in ''VideoGame/SonicSpinball'' plays this straight. Built right on top of a volcanic island in the middle of the ocean. Robotnik even manages to incorporate the magma into the base's power systems.
* In ''Videogame/{{Thief}} II: The Metal Age'', the Cetus Project is run from Markham's Isle, a former pirate base taken over by the Mechanists. As you learn when you go there, the administration of the project is a bit complicated, but Markham's Isle certainly fits the IslandBase and ElaborateUndergroundBase tropes.
* In ''VideoGame/TheCurseOfMonkeyIsland'', [[BaldBlackLeaderGuy King André]] operates out of Skull Island. Subverted in that [[spoiler: Skull Island really looks like a giant duck;s head, prompting Guybrush to complain "It should be called Duck Island!"]]
* ''VideoGame/EvilGenius'' goes for a twofer, having you [[ElaborateUndergroundBase tunnel into the mountain]] on your "Uninhabited Desert Island of Undisclosed Location (tm)". Midway through you're forced to move islands, because if you're going to use [[KillSat satellite-based]] doomsday weapons it's [[CardCarryingVillain obligatory]] to [[Film/YouOnlyLiveTwice launch them out the crater of an extinct volcano]].
* In ''Videogame/KnucklesChaotix'', Dr. Eggman builds his latest SupervillainLair on an island in order to get himself one step closer to several Chaos Emerald-like objects rumored to be hidden there.
* Used and [[LampshadeHanging Lampshaded]] in ''Videogame/KingdomOfLoathing''; after [[ArchEnemy your Nemesis]] pulls a VillainExitStageLeft after your first battle with them, your class leader says they probably have a secret tropical island volcano lair. Sure enough, you eventually find a map to a secret tropical island volcano lair on one of your Nemesis's thugs and have a final showdown [[ConvectionSchmonvection in the heart of the volcano]], first with your Nemesis's [[SequentialBoss normal form]] and then with its [[OneWingedAngel Demonic form]]. {{Troperrific}}!
* ''[[VideoGame/CommandAndConquerRedAlert3 Red Alert 3]]'' features a secret island base. A secret ''Easter Island'' base. In a volcano. With ''cannons in the Heads''. That shoot ''bears''.
* Dr. Nonookie's Nontoonyt Island lair in ''VideoGame/LeisureSuitLarry II''.
* The headquarters of Cipher, [[IDontLikeTheSoundOfThatPlace Citadark Isle]], in ''VideoGame/PokemonXDGaleOfDarkness''. They even have a machine that generates a constant storm around the island to prevent any unwanted visitors.
* The game ''VideoGame/{{Device6}}'' takes place on a seemingly abandoned one of these.
* ''Legend of Hero Tonma'' takes place on one named Untrodden Island.
* Governor's Island serves as the headquarters of Soviet forces occupying New York in ''VideoGame/FreedomFighters''. Two missions revolve around it, one to infiltrate it and assassinate General Tatarin and the final mission where it is stormed en masse by boat.
* In both ''Rymdjakten'' (''The Space Hunt'') and ''Djuphavsjakten'' (''The Deep Sea Hunt''), the heroes are headquartered on an island solely owned and inhabited by them. They start out rather mundane, with just the home of the person(s) who discovered the central issue of the game and some kind of facility relevant to the game (an observatory in ''Rymdjakten'', a lighthouse in ''Djuphavsjakten''), but by the later portions they include, among other things, training facilities (for astronauts in ''Rymdjakten'', and for divers and dolphins in ''Djuphavsjakten''), construction facilities, laboratories, and in ''Rymdjakten'' two rocket launching pads. In both games, all of this is privately owned.
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[[folder: Web Comics ]]
* During the spy spoof arc of ''Webcomic/DanAndMabsFurryAdventures'', [[MadScientist Dr. Jyrras']] [[SupervillainLair base]] is an island with an [[LampshadeHanging extinct]] [[ChekhovsVolcano volcano]]. Filled with orange pillows to simulate lava. It's supposed to be incredibly secret, but the [[GovernmentAgencyOfFiction agency]] has [[http://www.missmab.com/Comics/Vol_456.php detailed plans]].
* Subverted in ''Webcomic/SluggyFreelance'':
-->'''Dr. Steve''': It was your mistake to trespass on... [DramaticPause]... '''the Isle of Doctor Steve!'''
-->'''Torg''': "Isle"? We're in the woods. I never left the mainland!
-->'''Dr. Steve''': Do you know how expensive islands are these days?
* ''Webcomic/Narbonic'': [[spoiler: The happy ending has this for Helen (and Dave, by extension).]]
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[[folder: Web Original ]]
* [[http://www.villainsource.com/lairs.html Villain Source]] (formerly Villain Supply) has options of either a Skull Island or a subterranean base on a volcano island.
* ''{{KateModern}}'' BigBad Michelle Clore's evil lair is located on (RealLife) Adak Island.
* At the beginning of episodes of the Dr. Steel show, [[DoctorSteel Doctor Steel]]'s secret laboratory is shown to be on an island. Supposedly this island is located in the Pacific, near Hawaii.
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[[folder: Western Animation ]]
%% The following {{Zero Context Example}}s have been commented out and copied to Discussion. Please don't add them back to the page unless you add enough information to explain how they're an example of the trope.
%% * Cobra Island in ''WesternAnimation/GIJoe''.
* Drakken and the Seniors both have island bases in ''WesternAnimation/KimPossible''.
* Science Island is the headquarters for Jarvis Kord in ''WesternAnimation/BatmanTheBraveAndTheBold''.
* The bunny-shaped island known as Bunny Island is the primary setting for ''WesternAnimation/EvilConCarne''.
* ''WesternAnimation/JonnyQuest'' TOS. Dr. Benton Quest's island of Crab Key. It had dock facilities, experimental labs and a hovercraft.
* ''WesternAnimation/PhineasAndFerb''. Doctor Destructocon (Kevin to his friends), one of Dr. Doofenshmirtz's mentors, had a secret-hideout shaped island with the letter "D" carved into it.
* [[SesquipedalianSmith Prometheus Black]] AKA, Meltdown has a underground lab on Dinobot Island in ''WesternAnimation/TransformersAnimated''. [[spoiler: Blackarachnia]] moves into it later in the series. [[AllThereInTheManual Apparently]] it used to belong to the government.
* ''WesternAnimation/TheLegendOfKorra'' has [[http://images.wikia.com/avatar/images/8/8d/Air_Temple_Island_overview.png Air Temple Island]] where Tenzin and his family live.
* ''WesternAnimation/SuperFriends'' episode "Too Hot To Handle". Kobar the Solar-Terrarian villain has his laboratory hidden under a volcano on an island.
[[/folder]]

[[folder: Real Life ]]
* [[http://www.sealandgov.org/ Principality of Sealand]]: A small former UK military installation used by various groups for a number of different purposes -- from pirate radio station to server room. Declared an independent sovereign state at one point by the owners, which is taken seriously by absolutely nobody.
* World War 2 involved a lot of these, which include:
** The Hawaiian Islands, specifically Oahu and Pearl Harbor
** Fort Drum (AKA the concrete battleship) in Manila Bay
** Corregidor
** The Channel Islands
** Betio
** Malta (its refusal to surrender to the Axis was a constant pain for Italian and German efforts to keep their forces in North Africa supplied)
** Singapore (WinstonChurchill called its loss to the Japanese in just one week the worst disaster in British history)
** Iwo Jima
** Iceland
** Heligoland
** Possibly Japan and Britain on a large scale (see also below)
* During the ColdWar, several U.S. allies acted like these as they hosted US military personnel; most notable were (and still are) the UK and Japan as they are actual islands, as well as Iceland (which didn't and still doesn't have a military when it joined UsefulNotes/{{NATO}}) and Taiwan (prior to the establishing of diplomatic ties between the US and China in 1979). Islands need not be purely geographical, either - Alexander Haig, Secretary of State under UsefulNotes/RonaldReagan, called Israel the US's largest unsinkable aircraft carrier in the Middle East.
* [[http://en.wikipedia.org/wiki/Chagos_Archipelago Chagos Archipelago]]
** It houses a massive US military base at Diego Garcia. It was used for reconnaissance in the 1973 Arab-Israeli war and saw wartime use in the first Gulf War. After 9/11 it was key to the wars in Afghanistan and Iraq. It may house nuclear weapons and may be a "black site" for detaining prisoners. It is more secretive than Guantanamo Bay - which is probably why most people have never heard of it.
** In a true supervillain fashion, forty years ago, its people, the Chagossians, were [[DoomedHometown unceremoniously removed from their homeland]] by a joint operation of the United Kingdom and the United States, and [[YouCantGoHomeAgain essentially left beached in Mauritius as human detritus.]] This was detailed in David Vine's book ''Island of Shame: the Secret History of the US Military Base on Diego Garcia''.
* Not exactly at sea, but during UsefulNotes/TheAmericanRevolution, Francis 'Swamp Fox' Marion had a base on an island in the middle of the South Carolina swamps. It's depicted in the Disney series from the '60s as Snow Island.
* [[http://en.wikipedia.org/wiki/Haulbowline Haulbowline]], which started as a British army base, then became a naval base. Today, the island is home to the Irish Navy.
* [[http://en.wikipedia.org/wiki/Mobile_offshore_base Mobile offshore bases]] are a proposed idea of combining this trope with BaseOnWheels (we suppose it'd then be a Base On Hulls) so as to be able to extend force projection far beyond one's own shores (i.e., the US's) while still remaining in international waters and thus avoid a lot of political problems associated with (American) bases and personnel stationed overseas (e.g., Saudi Arabia, Okinawa).
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