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Medium portrait kostas fe16.png
Kostas' portrait from Three Houses.




Starting class


Voiced by
What is this nonsense?! All I was told was to kill as many noble pipsqueaks as possible! No one said anything about the Knights of damned Seiros being on our trail!
— Kostas, to the Flame Emperor.

Kostas (Japanese: コスタス Kostas) is a character appearing in Fire Emblem: Three Houses. He is the leader of a pack of bandits, hired by the Flame Emperor.

Fire Emblem: Three Houses


At the beginning of Three Houses, Kostas ambushes Edelgard, Dimitri, and Claude at dawn, intent on killing them. Jeralt and his child Byleth arrive just in time to aid them in defeating Kostas and his band of thieves. After the battle, Kostas attempts to kill Edelgard, but Byleth protects her from the attack, putting them on the verge of death. Just before the attack can connect, a mysterious power allows Byleth to rewind time to the moment before the attack, allowing Byleth to counter Kostas' blow and save Edelgard. Kostas and his remaining henchmen retreat when the Knights of Seiros arrive to apprehend them.

Later at the Red Canyon ruins, Kostas objects to the deal being given to him by his employer, the Flame Emperor, since having to battle the Knights of Seros was not part of it. The Emperor calls Kostas worthless for worrying about the Knights of Seiros and chides him for underestimating them and departs to find Kostas' replacements before he can argue further.

Kostas battles Byleth and their class when they reach the canyon under Rhea's orders and is slain.



Normal Hard Maddening

Small portrait kostas fe16.png
Level 3
Movement 5
Crest --
Max HP 28 Luck 5
Strength 10 Defense 6
Magic 5 Resistance 1
Dexterity 7 Charm 6
Speed 7
Inventory Abilities
Iron AxeThis item is dropped upon this unit's defeat. --
Combat arts Spells Battalion
-- -- --
Skill Levels
Swords Lances Axes Bows Brawling Reason Faith Authority Heavy Armor Riding Flying Ma
E E E E E E E E -- -- -- FE16ClassMasteryEmpty.png

Chapter 2

Normal Hard Maddening

Small portrait kostas fe16.png
Level 4
Movement -
Crest --
Max HP 30 Luck 8
Strength 11 Defense 7
Magic 6 Resistance 2
Dexterity 13 Charm 7+1
Speed 13
Inventory Abilities
Iron Axe Steal
Axe Prowess Lv 3
Combat arts Spells Battalion
-- -- Iron King's Thieves Lv. 3
Skill Levels
Swords Lances Axes Bows Brawling Reason Faith Authority Heavy Armor Riding Flying Ma
C E E E E E E E -- -- -- FE16ClassMasteryEmpty.png

Personality and character

While Kostas has little screentime to develop his personality, he consistently acts in a violent manner with a notable disregard for the nobility. He is easily flustered when the situation turns against him, but is also defiant enough to go down swinging when confronted by the Knights of Seiros.


Battle quotes

I'm gonna kill you where you stand...
— Kostas in the Prologue
Kostas: What the?! Aren't you Jeralt the Blade Breaker? What's a renowned mercenary like you doing here?
Jeralt: I'm the one who should be complaining. I'm caught up in the mess you started!

— Kostas in the Prologue against Jeralt
Hey, you with the blank stare! Outta my way!
— Kostas in the Prologue against Byleth
Sending these brats instead of the knights means they've underestimated me! Big mistake!
— Kostas in Chapter 2
Y-you're... It can't be! The mercenary from before? So what, now you're pals with the knights? I'll kill you and your pesky brats!
— Kostas in Chapter 2 against Byleth
Kostas: Spoiled little noble! Just die like a good little rich kid!
Edelgard: Do you really think being born a commoner gives you the right to kill? Despicable.

— Kostas in Chapter 2 against Edelgard.
Kostas: Spoiled little noble! Just die like a good little rich kid!
Dimitri: Unfortunately for you, I will not oblige. You will regret all that you have done.

— Kostas in Chapter 2 against Dimitri.
Kostas: Spoiled little noble! Just die like a good little rich kid!
Claude: Being noble has nothing to do with who you are as a person or how hard your life is. Your logic is illogical!

— Kostas in Chapter 2 against Claude.

Death quotes

I should have never listened to that idiot... What a mistake...
— Kostas in Chapter 2

Other appearances


Etymology and other languages

Names, etymology and in other regions
Language Name Definition, etymology and notes
English Kostas A diminutive form of the Greek name Constantine, meaning "steadfast".
Japanese コスタス Kostas



Project Characters.png This article is part of Project Characters, a project focused in writing articles for every character present in the Fire Emblem series.
Fire Emblem: Three Houses
Playable characters Black Eagles BernadettaCasparDorotheaEdelgardFerdinandHubertLinhardtPetra
Blue Lions AnnetteAsheDedueDimitriFelixIngridMercedesSylvain
Golden Deer ClaudeHildaIgnatzLeonieLorenzLysitheaMarianneRaphael
Other AloisBylethCatherineCyrilFlaynGilbertHannemanManuelaSetethShamir
Non-playable characters AnnaDuke AegirFlecheIonius IXJeraltJeritzaJudithLadislavaLambertLord ArundelNaderRandolphRheaRodrigueSeirosSothisTomas
Bosses AcheronBlaiddydCatherineCharonChilonClaudeCorneliaDaphnelDeath KnightDimitriDominicEdelgardFlame EmperorFerdinandFraldariusGautierGloucesterGonerilGwendalHubertJudithKostasKronyaLadislavaLamineLonatoLord ArundelLorenzMetodeyMiklanMysonNaderNemesisPallardóRandolphRheaRieganRodrigueSolonThalesThe Immaculate OneThe ImmovableThe Wind CallerWandering Beast
Personal weapons and regalia Aegis ShieldAreadbharAxe of UkonvasaraAymrBlutgangCaduceus StaffCirce StaffCrusherFailnaughtFreikugelLance of RuinLúinOchain ShieldRafail GemScythe of SarielSeiros ShieldSpear of AssalSword of BegaltaSword of MoraltaSword of SeirosSword of the CreatorTathlum BowThe InexhaustibleThunderbrandThyrsus
Chapters Part I Prologue: An Inevitable Encounter • 1: Three Houses • 2: Familiar Scenery • 3: Mutiny in the Mist • 4: The Goddess's Rite of Rebirth • 5: Tower of Black Winds • 6: Rumors of a Reaper • 7: Field of the Eagle and Lion • 8: The Flame in the Darkness • 9: The Cause of Sorrow • 10: Where the Goddess Dwells • 11: Throne of Knowledge • 12: To War Black Eagles, if Byleth sides against EdelgardBlue LionsGolden Deer / Outset of a Power StruggleBlack Eagles, if Byleth sides with Edelgard
Part II Silver Snow
Silver Snow
13: Reunion at Dawn • 14: A King Without a Kingdom • 15: Valley of Torment • 16: The Rose-Colored River • 17: The Impregnable Fortress • 18: The Chaos of War • 19: Conclusion of the Crossing Roads • 20: The City Without Light • 21: Following a Dream
Crimson Flower
Crimson Flower
13: Beyond Escape • 14: The Master Tactician • 15: Tempest of Swords and Shields • 16: Lady of Deceit • 17: Field of Revenge • 18: To the End of a Dream
Azure Moon
Azure Moon
13: Reunion at Dawn • 14: The Delusional Prince • 15: Valley of Torment • 16: The Rose-Colored River • 17: Blood of the Eagle and Lion • 18: The King's Triumphant Return • 19: The Golden Deer's Plea • 20: The Impregnable Fortress • 21: Our Chosen Paths • 22: Oath of the Dagger
Verdant Wind
Verdant Wind
13: Reunion at Dawn • 14: The Alliance Leader's Ambitions • 15: Valley of Torment • 16: The Rose-Colored River • 17: Blood of the Eagle and Lion • 18: The Golden Scheme • 19: The Chaos of War • 20: Conclusion of the Crossing Roads • 21: The City Without Light • 22: Fódlan's New Dawn
Paralogues Part I An Ocean ViewDeath TollDividing the WorldFalling Short of HeavenThe ForgottenLand of the Golden DeerOil and WaterRumored NuptialsSword and Shield of SeirosTales of the Red CanyonTrue ChivalryWar for the Weak
Part II Darkness Beneath the EarthEternal GuardianThe Face BeneathForeign Land and SkyForgotten HeroInsurmountableLegend of the LakeRetributionThe Silver MaidenThe Sleeping Sand LegendWeathervanes of Fódlan
Locations FódlanAdrestiaFaerghusGarreg Mach MonasteryLeicesterAlmyraBrigidDagdaSreng
Groups, objects and concepts 10 ElitesBlack EaglesBlue LionsChurch of Seiros (Knights of Seiros) • Crests (Crest Stone) • Divine PulseGolden DeerMonstersThose who slither in the dark
Related topics Music LibraryName chartPre-release informationUnused content