[[quoteright:350:http://static.tvtropes.org/pmwiki/pub/images/lt/hellsing.jpg]]
[[caption-width-right:350:Clockwise from top: Seras Victoria, Integra Hellsing and Alucard.]]

->''In the name of God, impure souls of the living dead shall be banished into eternal damnation. Amen.''

Led by [[TheWomanWearingTheQueenlyMask Integra Hellsing]], the secret Hellsing Organization's mission is to protect Britain, its Queen, and the Anglican Church from supernatural threats, mainly vampires. As the series begins, one such vampire is ravaging the English village of Cheddar, turning its inhabitants into “ghouls”. To deal with this threat, Integra sends Hellsing’s most powerful operative, Alucard.

Alucard confronts the vampire as he is about to murder the last survivor of the police forces, Seras Victoria. In order to kill the vampire he shoots through Seras, mortally wounding her. He offers her the chance to become a vampire herself, and she accepts. Alongside Integra, Alucard, and [[RedShirt Hellsing’s human operatives]], Seras discovers and fights a new kind of mass-produced undead, called [= FREAKs =].

The TV series is told mainly from [[AudienceSurrogate Seras’ perspective]] as she adjusts to life as a vampire in the employ of Hellsing, while attempting with the other characters to unravel the mystery of the artificial vampires and the FREAK chips. The first half of the series is more or less faithful to the original manga; however, themes such as what it means to be “human” and character development are explored more in-depth. The latter half of the TV series is where it diverges wildly from its source material, due to it [[OvertookTheManga overtaking the manga]].

'''For the original manga and OVA, see ''Manga/{{Hellsing}}''.''' The TV series has its own [[Characters/HellsingAnime characters page]].

----
!! This {{anime}} contains examples of:
* AdaptedOut: Pip Bernadotte and the Wild Geese from the original manga. A mercenary group very similar to the Wild Geese shows up in the later episodes, but they don't get nearly the screentime or importance the Wild Geese did in the manga.
* AdaptationExpansion: The series added in more CharacterDevelopment in the first six episodes, especially for Seras.
* AlasPoorYorick: Seras carrying Alucard’s head, twice.
* AltumVidetur
* AscendedExtra: Ferguson presumably dies as a RedShirt in the Valentine brothers’ attack in the manga, but he survives it in the TV series and acts as a father-figure to Seras.
* AsTheGoodBookSays: Alexander Anderson, naturally.
* [[spoiler:AteHisGun: In a flashback, Alexander is shown attempting this during his first encounter with Alucard. Obviously, either it didn't work or he stopped himself.]]
* [[spoiler:TheBadGuyWins: By the end of the series, the surviving heroes are imprisoned as traitors, the conspirators have won and Hellsing's been disbanded. But the final scene reveals that Alucard is still loose and loyal to Integra, leaving open the possibility of Hellsing taking on the British government.]]
* BatmanColdOpen
* BatmanGambit: Hellsing's plan to lure out Incognito to the Tower of London.
* BigBad: Incognito
* BigDamnHeroes: Seras has most of them.
* BloodlessCarnage: Most vampires and ghouls of the first arc turn to "ashes" when they die. The series gets bloodier towards the end though.
* BodyHorror: The sequence where an SAS member is turned into a monster.
** Any scene which features Alucard's powers being used, or Incognito in general. Bonus points for both at once.
* BookEnds: The confrontation with the Vicar vampire takes place in a church. The last episode features Incognito and Alucard finishing their battle in a cathedral near the Tower of London.
* BoundAndGagged: Integra, in a strange dream sequence brought on by Alucard.
* CarBomb: How [[spoiler:Harry]] dies.
* {{Literature/Carmilla}}: [[spoiler:Bubbancy]]
* CharacterDevelopment: Lots more, compared to the manga.
* CheekyMouth: Only a few instances, fortunately.
* ChiakiKonaka
* ChristianityIsCatholic: Averted, the Hellsing Organization is Anglican, and it does get into turf wars with the Catholic Iscariot Organization.
* ChurchShootout: In the first episode, Alucard confronts the vampire priest in a church.
* CombatSadomasochist: Incognito.
* CrucifiedHeroShot: [[spoiler:Ferguson]].
* DarkSkinnedBlond: Integra and Anderson.
* DemotedToExtra: Anderson and Maxwell.
* DisposableWoman: Played with in the first episode. A fat, lecherous executive is groping a prostitute. Alucard shows up and calls out the vampire. [[spoiler:It's the woman.]]
* DistressedDamsel: Integra spends much more time in life-threatening danger than her manga and OVA counterparts.
* DramaticShattering: Anderson's glasses.
* DullSurprise: In the English dub of the [[Anime/{{Hellsing}} anime]], Integra sounds rather bored instead of furious upon discovering that the Valentine brothers had invaded Hellsing Manor.
* FanDisservice: Integra gets partially undressed once, but it's creepy/squicky [[IHaveYouNowMyPretty considering the circumstances]].
* {{Fanservice}}: The fetish club scene from "Brotherhood".
* FingerPokeOfDoom: Luke dispatches a RedShirt this way.
* FisticuffsBoss: Seras VS the last SAS squadmember.
* FreakOut: Seras when seeing that Hellsing's human personnel had been turned into ghouls.
* FullFrontalAssault: Incognito.
* GeckoEnding: Due to the original anime being produced 7 years before the manga reached its conclusion, their respective endings are radically different.
* GodzillaThreshold: Integra orders Alucard to enter his Level 1 form once Incognito [[spoiler:''summons a god'' to destroy London]].
* [[GoodScarsEvilScars Good Scars]]: Ferguson
* GunPorn: There's a lot of pistol close-ups.
* AHouseDivided: Honestly, at least half the bodycount on the good guys' side is caused by each other. [[JurisdictionFriction Police]], [[LetsYouAndHimFight special forces]], [[InterServiceRivalry the army]], [[WeAREStrugglingTogether various paramilitary groups]], [[AHouseDivided everybody]] treats them as anywhere from [[WeHaveReserves expendable]] through [[KillEmAll collateral damage]] all the way to mandatory targets.
* IHateYouVampireDad: Seras has her moments.
* IHaveYouNowMyPretty: Integra's last encounter with [[spoiler:Bubbancy]] brings this trope to mind...
* ImaHumanitarian: [[spoiler:Incognito]] eats [[spoiler:Helena]] alive. Alucard also counts, especially when he kills [[spoiler:Luke Valentine]].
* ImpaledWithExtremePrejudice: [[spoiler:Incognito’s fate.]]
* InvincibleHero: To a degree, Alucard is this. He's not completely invincible but being beheaded was only an inconvenience.
** The Abridged series gives an excellent nod to this trope when Alucard and Integra talk on the phone. "Oh what are you going to do, call that guy that can stop me? What was his name? Michael [=McDoesn=]'tExist?"
* KilledToUpholdTheMasquerade: [[spoiler:Kim]]
* KissOfTheVampire: In "Brotherhood", the victims are shown to have [[DoesThisRemindYouOfAnything very...suggestive]] [[LooksLikeSheIsEnjoyingIt expressions]].
* LesbianVampire: [[spoiler:Bubbancy]]
* LighterAndSofter: Partly due to the anime's departure from the original storyline, Alucard’s sadism is toned down and his [[MoralityPet relationships with Integra and Seras]] are emphasized.
* LiminalBeing: Schrödinger both exists and doesn't.
* LimitedWardrobe: Actually averted in the case of Seras. When she's not in her [[IconicOutfit blue uniform]], she has a variety of civilian clothes. Played straight with everyone else, though.
* UsefulNotes/TheLondonUnderground: In "Duel".
* MakesJustAsMuchSenseInContext: How Incognito dodges a gunshot in Episode 13.
* MasochismTango: Integra and Alucard. Their dynamics (and characterizations) changed from BodyguardCrush in the Manga to MasochismTango in the TV series.
* TheMasquerade: Keeping supernatural activities secret is emphasized in the TV series.
* MauveShirt: Ferguson.
* MurderDotCom: In "Innocent as a Human".
* MyGodWhatHaveIDone: [[spoiler:Walter]], after he is hypnotized into nearly killing Seras.
* NinjaPirateZombieRobot: Holy KnightsTemplar {{Dracula}} with GunsAkimbo!
** Incognito takes it further: African Black Magic [[LooksLikeOrlok Nosferatu]].
** Vampire Nazis.
* NoSwastikas: Avoids the issue entirely by excluding the later Millennium arc, but this is due to production timing rather than censorship (but the shape of the circuitry in the FREAK chips in the series is pretty suggestive).
* NotQuiteDead: Alucard pulls this off twice.
** Incognito does this as well, also twice, and both after being shot by a gun that should have killed him.
* NowThatsUsingYourTeeth: Anderson briefly wields a bayonet with his teeth.
** Alucard also uses his teeth to cock his gun once.
* OffWithHisHead
* OldSoldier: Ferguson.
* OminousLatinChanting: Part of the soundtrack.
* OneWingedAngel: Alucard’s Level 1, his most powerful state (in the anime only).
* OutGambitted: [[spoiler:Integra's BatmanGambit technically succeeds, but Incognito outmaneuvers her.]]
* OvertookTheManga
* RealSongThemeTune: "Shine", the ending theme of the television series. Performed by Music/MrBig.
* ReasonableAuthorityFigure: Integra, Ferguson.
* ShoutOut: Possibly to the ''Wilmarth Foundation'' in the CthulhuMythos, which may have influenced the portrayal of the ''Hellsing Organization''. [[ChiakiKonaka The show's writer]] is known for being a fan of the Mythos, and often adds Lovecraftian themes or references to his works.
** TakeThat, too - The dub of Episode Four of the anime references The Sun, a British tabloid, when a newscaster is being chewed out over a broadcast of Hellsing operatives.
** When Alucard confronts Anderson in episode 7 he calls him Music/JudasPriest.
* SnuffFilm: In "Innocent As a Human".
* SparedByTheAdaptation: In more ways than one - [[spoiler:Walter]] not only survives thanks to the series quickly [[OvertookTheManga overtaking the manga's storyline]], [[spoiler:he also never has a FaceHeelTurn]].
* StagesOfMonsterGrief: Seras goes through most of them.
* StateSec: The paramilitary aspects of the Hellsing Organization is played up more in the Anime. Here, the RedShirtArmy actually goes around and take out vampires.
* SupportingProtagonist: Seras becomes this as well as an AudienceSurrogate in this series. She's actually quite a bit more well-rounded than in either the manga or the OVA, surprisingly.
* TimeBomb: One of the many dangers Hellsing's RedShirtArmy faces.
* UndeadChild: Helena.
* {{UST}}: There seems to be even more of it between Alucard and Integra in the anime. Emphasis on "sexual".
** OfficialCouple, if you take into account [[WordOfGod Studio Gonzo's statements and interviews.]]
* VampiresOwnNightClubs: The Valentine brothers.
* WhatTheHellAreYou: Said to Alucard a couple of times. [[spoiler:Just before his death, Incogneto gets an answer, as Alucard's half-shadowed face reveals the mustachioed face of Vlad Ţepeș.]]
* WholeEpisodeFlashback: Episode 10 depicts Integra and Alucard's first encounter.
* WolfMan: The SAS squadmembers, once turned into monsters, gain the ability to transform into these.
* YouMonster:
-->'''Alexander Anderson''': You monster.
-->'''Alucard''': I get that a lot.
----->