Dukedom of Gaien

Island nation and historical rival of Kooluk
Flag of the Dukedom of Gaien. The text reads "Morality & Prospdrity (sic)" in southern script.

The Dukedom of Gaien (ガイエン公国, Gaien Kōkoku) is a nation that forms part of the plot and back story for Suikoden IV and is mentioned in Suikoden Tactics.


The Dukedom of Gaien was a huge island country located in the south-west Island Nations. A great power in the region, it was bordered to the east by the Kuknasi Sea and to the north by the Rassina Sea.

Gaien was officially a monarchy but around the time of the Island Liberation War, the power of regional governing lords had increased. Governance tended to be left to the discretion of these lords and Gaien functioned almost as a republic while the monarch reigned in name only.

Gaien's primary industry was the production of carpets and clothing as well as ship manufacturing and repair. Farming was rarer and the country tended to rely on food imports.

The country had a long history and especially notable was its many repeated conflicts with the north-eastern Kooluk Empire. Middleport was originally a Gaien territory and there was much bitterness from the nation over its past occupation by Kooluk.

A series of defeats to the Kooluk Empire would mark the beginning of a decline for Gaien's eastern forces. Around the time of the Island Liberation War, the number of regional lords who were loyal only to their own profit and self-preservation rather than to their nation was not inconsiderable.

The Gaien colony of Razril was once home to the Knights of Gaien. Due to the changing times within Gaien itself, when Razril was captured during the Island Liberation War, Gaien chose not to send any relief to try and liberate the occupied island, apparently out of a desire not to further aggravate tensions with Kooluk.

That colony would become independent following the Island Liberation War, becoming a member of the new Island Nations Federation.


  1. Genso Suikoden Genso Shinsho Vol.16 (ISBN 4-7753-0289-2), page 29
  2. Genso Suikoden IV Prelude (ISBN 4-86155-016-5)
  3. Genso Suikoden IV Official Guide Complete Edition (ISBN 4-86155-022-X), page 10
  4. Rhapsodia Final Archive (ISBN 4-8402-3284-9), page 58
  5. Genso Suikoden Kiwami Encyclopedia, pages 401-2, 509
Suikoden IV
Characters - Enemies - Locations - Runes
108 Stars (Battle) Hero IVAkaghiAldoAmeriaAxelBartholomewChampoCharlemagneChiepooDarioEugeneFlareFredericaGauGretchenHelgaHelmutHerveyIzakJeaneJeremyJewelKarlKatarinaKateKenethKikaKonradLino En KuldesLo FongLo HakLo SengMaxineMillayMitsubaMizukiNalkulOrnanPabloPaulaRachelReinholdRitaSelmaSchtolteheim Reinbach IIIShiramineSigurdSnowe VingerhutTalTedTravisTrishtanUgetsuVikiWarlockWendel
108 Stars (Support) AdrienneAgnesBangBasilBrecCarrieCedricChadliDeborahDesmondElenor SilverbergEmaEtienneFunghiGarethGaryGunterHarutoIgorJangoKeenKevinLilanLilenLilinLilonLiloonLouiseMaoManuMickyNabokovNalleoNaoNatalyNicoNoahOlegOskarPamPecolaPerraultPhilRakgiRamadaReneRikieSetsuTaisukeTanyaTovYu
Other characters BrandeauColtonCray's sonElven ElderFog Ship GuideGlen CottGovernorGraham CrayLeknaatNa-Nal Island ChiefQueen of ObelRakgi's fatherRominaSchtolteheim Reinbach IITroyVincent Vingerhut
Dukedom of GaienIsland NationsKooluk Empire
Island Nations Deserted IslandDonut IslandEl-Eal FortressFog ShipHermitage IslandIluya IslandLime Shelf IslandKingdom of Obel (Obel Royal PalaceRuins of Obel) • MiddleportMordo IslandMountain Mass IslandNa-Nal Island (Elven SettlementGreat Elven Tree) • Nay Island (Nay-Kobold SettlementStonecutter's Field) • Nest of PiratesRazril
Events Island Liberation War (First EngagementPirate BrandeauRetributionPirate DarioDefending ObelFormer FriendRegaining RazrilBattle Once MoreFor Obel's FreedomMysterious FleetFinal Engagement) • Man-Hunting Incident
Races ElfHumanMermaidNay-Kobold
True Runes Rune of Life and DeathRune of Punishment
Terms Allied ForcesCray Trading CompanyElven RemedyHeadquarters ShipIsland Nations FederationKnights of GaienOrark Maritime TradeRune Cannon
Suikoden Tactics
Party characters Andarc BergmanBlue MercenaryBrandeauBuskCoopCorseliaEdgarKyrilLalacleMercenary LeaderOrnelaPeckRed MercenaryRogetSenecaSimeonWalterYellow Mercenary
Suikoden IV party characters Hero IVAkaghiAmeriaAxelCarrieCedricChampoCharlemagneDarioEmaEugeneFlareFredericaGaryGretchenHerveyJeaneJeremyJewelKarlKatarinaKateKenethKikaLino En KuldesMaxineMillayMitsubaMizukiNalkulNalleoNoahPabloPaulaRachelReinholdReneRitaSelmaSchtolteheim Reinbach IIISigurdSnowe VingerhutTalTrishtanWendelYu
Non-player characters AdrienneHeinzIskasJuliusMartinMirandaNohlRalphSchtolteheim Reinbach IISetsuSteeleYohn
Island Nations FederationKooluk Empire
Island Nations Federation Deserted IslandHermitage IslandIluya IslandKingdom of Obel (Obel Royal PalaceRuins of Obel) • MiddleportNa-Nal IslandNay IslandNest of PiratesRazril
Kooluk Empire Caleron Laboratory (Caleron) • Canal Town MersetoCollanbal RuinsEl-Eal FortressFrontier Town HarunaImperial City of GraskaMido ShallowsSecret Patriarchal FacilitySmall Border VillageTerana PlainsXasta Grassland
Terms Dukedom of GaienElvesEvil EyeHumansImperial FactionIsland Liberation WarIsland NationsIsland Nations FederationKooluk EmpireMan-Hunting IncidentNay-KoboldsPatriarchal FactionRune CannonScarlet Moon Empire