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* CharClone: He wears a mask, he is TheAce in combat, he is associated with red, he has a complicated relationship with the other villains, and he is a rival of sorts to the Traveler (at least, according to him).
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* CharClone: {{Expy}}: He wears a mask, he is TheAce in combat, he is associated with red, he has a complicated relationship with the other villains, and he is a rival of sorts to the Traveler (at least, according to him).him). Does Char Aznable from ''Franchise/{{Gundam}}'' come to mind?
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* ShownTheirWork: As [[https://youtu.be/l8YXe7EkmoU?t=854 mentioned]] in the v2.0 Special Program, Tartaglia's melee stance incorporates elements of swordplay with the [[https://en.wikipedia.org/wiki/Shashka shashka]], a single-bladed, single-handed, guardless backsword associated with the [[https://en.wikipedia.org/wiki/Cossacks Cossack peoples]] of southern Russia and Ukraine designed for pure offense with little in the way of defense, used for dealing powerful, hard-to-dodge blows and [[JustForPun changing the tide]] of the battle in a couple of swift, sudden strikes, all of which aligns with Tartaglia's melee stance being at its most efficient when used sparingly.
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* ShownTheirWork: As [[https://youtu.be/l8YXe7EkmoU?t=854 mentioned]] in the v2.0 Special Program, Tartaglia's melee stance incorporates elements of swordplay with the [[https://en.wikipedia.org/wiki/Shashka shashka]], a single-bladed, single-handed, guardless backsword associated with the [[https://en.wikipedia.org/wiki/Cossacks Cossack peoples]] of southern Russia and Ukraine designed for pure offense with little in the way of defense, used for dealing powerful, hard-to-dodge blows and [[JustForPun [[{{Pun}} changing the tide]] of the battle in a couple of swift, sudden strikes, all of which aligns with Tartaglia's melee stance being at its most efficient when used sparingly.
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[[Characters/GenshinImpactMondstadt Mondstadt]] ([[Characters/GenshinImpactKnightsOfFavonius Knights of Favonius]] | [[Characters/GenshinImpactFourWinds Four Winds]] | [[Characters/GenshinImpactFischl Fischl]] | [[Characters/GenshinImpactMondstadtHistorical Historical]])\\
to:
[[Characters/GenshinImpactMondstadt Mondstadt]] ([[Characters/GenshinImpactKnightsOfFavonius Knights of Favonius]] | [[Characters/GenshinImpactFourWinds Four Winds]] | [[Characters/GenshinImpactFischl Fischl]] | [[Characters/GenshinImpactMondstadtHistorical Historical]])\\
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[[Characters/GenshinImpactSumeru Sumeru]] ([[Characters/GenshinImpactAkademiya Akademiya]] | [[Characters/GenshinImpactAlhaitham Alhaitham]] | [[Characters/GenshinImpactCyno Cyno]] | [[Characters/GenshinImpactKaveh Kaveh]] | [[Characters/GenshinImpactEremites Eremites]] | [[Characters/GenshinImpactSumeruHistorical Historical]])\\
to:
[[Characters/GenshinImpactSumeru Sumeru]] ([[Characters/GenshinImpactAkademiya Akademiya]] | [[Characters/GenshinImpactAlhaitham Alhaitham]] | [[Characters/GenshinImpactCyno Cyno]] | [[Characters/GenshinImpactKaveh Kaveh]] | [[Characters/GenshinImpactEremites Eremites]] | [[Characters/GenshinImpactSumeruHistorical Historical]])\\
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Snezhnaya ([[Characters/GenshinImpactFatui Fatui]] | [[Characters/GenshinImpactHarbingers Harbingers]] | [[Characters/GenshinImpactTartaglia Tartaglia]])\\
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Snezhnaya ([[Characters/GenshinImpactFatui Fatui]] | [[Characters/GenshinImpactHarbingers Harbingers]] | [[Characters/GenshinImpactTartaglia Tartaglia]])\\Harbingers]])\\
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[[Sandbox/GenshinImpactAnemo Anemo]] ([[Characters/GenshinImpactWanderer The Wanderer]]) | [[Sandbox/GenshinImpactCryo Cryo]] | [[Sandbox/GenshinImpactDendro Dendro]] ([[Characters/GenshinImpactNahida Nahida]]) | [[Sandbox/GenshinImpactElectro Electro]] ([[Characters/GenshinImpactRaidenShogun Raiden Shogun]]) | [[Sandbox/GenshinImpactGeo Geo]] ([[Characters/GenshinImpactZhongli Zhongli]]) | '''Hydro''' | Pyro\\
to:
[[Sandbox/GenshinImpactAnemo Anemo]] ([[Characters/GenshinImpactWanderer The Wanderer]]) | [[Sandbox/GenshinImpactCryo Cryo]] | [[Sandbox/GenshinImpactDendro Dendro]] ([[Characters/GenshinImpactNahida Nahida]]) | [[Sandbox/GenshinImpactElectro Electro]] ([[Characters/GenshinImpactRaidenShogun Raiden Shogun]]) | [[Sandbox/GenshinImpactGeo Geo]] ([[Characters/GenshinImpactZhongli Zhongli]]) | '''Hydro''' | Pyro\\[[Sandbox/GenshinImpactPyro Pyro]]\\
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[[/folder]]
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!!Tartaglia, "Childe" / Ajax
!!!'''Voiced by:''' Dong Yu (Chinese), Creator/RyoheiKimura (Japanese), Creator/NamDohHyeong (Korean), Creator/GriffinBurns (English)\\
'''Introduced:''' November 11, 2020 (v1.1, "A New Star Approaches")
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/character_tartaglia_portrait_7.png]]
[[caption-width-right:350:Childe]]
[[caption-width-right:350:[[labelnote:Click here to see his Foul Legacy Transformation]]https://static.tvtropes.org/pmwiki/pub/images/childe_boss_2.png[[/labelnote]]]]
->''"A warrior must always be ready to face any challenge with his blade. The outcome of the battle is irrelevant — what matters is that you learn from the experience."''\\\
'''Rarity:''' 5★\\
'''Birthday:''' July 20\\
'''Element:''' [[MakingASplash Hydro]] (Vision), [[ShockAndAwe Electro]] (Delusion)\\
'''Weapon:''' Bow\\
'''Associated Weapon:''' Polar Star[[note]]Skyward Harp prior to Version 2.2[[/note]]\\
'''Model:''' Tall Male\\
'''Constellation:''' Monoceros Caeli, the Celestial Narwhal\\
'''Specialty Dish:''' A Prize Catch (Calla Lily Seafood Soup)\\
'''Normal Attack:''' Cutting Torrent\\
'''Elemental Skill:''' Foul Legacy: Raging Tide\\
'''Elemental Burst:''' Havoc: Obliteration\\
'''Utility Passive:''' Master of Weaponry (Increases the talent levels of the party's Normal Attacks by one)\\
'''Affiliation:''' Fatui\\\
Eleventh and youngest of the Harbingers. Tartaglia's youthful, friendly façade belies a bloodthirsty man who is not so much concerned with enforcing the Tsaritsa's will as much as satisfying his desire for a good fight, for which he has recently taken an interest in the Traveler.\\
\\
On paper, Tartaglia seems restricted to strategic bowmanship, with his ability to mark enemies with "Riptide" through charged shots, which can be used to trigger either one or both special attacks: ''Riptide Flash'', which deals gradual Hydro damage when hit with fully-charged shots, and/or ''Riptide Burst'', which damage surrounding enemies and also inflict them with Riptide once the marked opponent is defeated. The Riptide mechanic, however, is but the foundation for Tartaglia's greatest asset in combat: the ability to freely switch between ranged and melee modes through his Elemental Skill, ''Foul Legacy: Raging Tide''. In his melee mode, he swaps his bow for a pair of shortswords made of Hydro energy, giving him greater power and agility at the cost of a lengthy cooldown time proportional to its duration; in addition, slashing marked enemies allows his normal attacks to be augmented with ''Riptide Slash'', which also damages surrounding enemies. His Elemental Burst, ''Havoc: Obliteration'', can trigger different, wide-ranging attacks depending on his stance: in ranged mode, he unleashes ''Flash of Havoc'', where he fires an arrow made of Hydro energy that also inflicts enemies with Riptide; in melee mode, ''Light of Obliteration'', where he fuses his swords into a double-ended lance which he swings at surrounding enemies, triggering another wide-ranging attack, ''Riptide Blast'', upon marked enemies.\\
\\
As Tartaglia continues to revel in the thrill of battle, he gains the ability to inflict Riptide with his normal and charged attacks in melee mode whenever they score critical hits, in addition to the marks seeing an extended duration. Once he has fully sated his bloodlust, ''Foul Legacy: Raging Tide'' sees a reduced cooldown time; Tartaglia regains some Energy whenever enemies marked with Riptide are defeated; his melee stance can trigger either ''Riptide Slash'' on marked enemies or ''Riptide Flash'' otherwise; and the melee form of ''Havoc: Obliteration'' resets the cooldown time of ''Foul Legacy: Raging Tide''.\\
\\
Tartaglia can only be obtained when the ''Farewell of Snezhnaya'' Character Event Wish is active.
----
!!!'''Voiced by:''' Dong Yu (Chinese), Creator/RyoheiKimura (Japanese), Creator/NamDohHyeong (Korean), Creator/GriffinBurns (English)\\
'''Introduced:''' November 11, 2020 (v1.1, "A New Star Approaches")
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/character_tartaglia_portrait_7.png]]
[[caption-width-right:350:Childe]]
[[caption-width-right:350:[[labelnote:Click here to see his Foul Legacy Transformation]]https://static.tvtropes.org/pmwiki/pub/images/childe_boss_2.png[[/labelnote]]]]
->''"A warrior must always be ready to face any challenge with his blade. The outcome of the battle is irrelevant — what matters is that you learn from the experience."''\\\
'''Rarity:''' 5★\\
'''Birthday:''' July 20\\
'''Element:''' [[MakingASplash Hydro]] (Vision), [[ShockAndAwe Electro]] (Delusion)\\
'''Weapon:''' Bow\\
'''Associated Weapon:''' Polar Star[[note]]Skyward Harp prior to Version 2.2[[/note]]\\
'''Model:''' Tall Male\\
'''Constellation:''' Monoceros Caeli, the Celestial Narwhal\\
'''Specialty Dish:''' A Prize Catch (Calla Lily Seafood Soup)\\
'''Normal Attack:''' Cutting Torrent\\
'''Elemental Skill:''' Foul Legacy: Raging Tide\\
'''Elemental Burst:''' Havoc: Obliteration\\
'''Utility Passive:''' Master of Weaponry (Increases the talent levels of the party's Normal Attacks by one)\\
'''Affiliation:''' Fatui\\\
Eleventh and youngest of the Harbingers. Tartaglia's youthful, friendly façade belies a bloodthirsty man who is not so much concerned with enforcing the Tsaritsa's will as much as satisfying his desire for a good fight, for which he has recently taken an interest in the Traveler.\\
\\
On paper, Tartaglia seems restricted to strategic bowmanship, with his ability to mark enemies with "Riptide" through charged shots, which can be used to trigger either one or both special attacks: ''Riptide Flash'', which deals gradual Hydro damage when hit with fully-charged shots, and/or ''Riptide Burst'', which damage surrounding enemies and also inflict them with Riptide once the marked opponent is defeated. The Riptide mechanic, however, is but the foundation for Tartaglia's greatest asset in combat: the ability to freely switch between ranged and melee modes through his Elemental Skill, ''Foul Legacy: Raging Tide''. In his melee mode, he swaps his bow for a pair of shortswords made of Hydro energy, giving him greater power and agility at the cost of a lengthy cooldown time proportional to its duration; in addition, slashing marked enemies allows his normal attacks to be augmented with ''Riptide Slash'', which also damages surrounding enemies. His Elemental Burst, ''Havoc: Obliteration'', can trigger different, wide-ranging attacks depending on his stance: in ranged mode, he unleashes ''Flash of Havoc'', where he fires an arrow made of Hydro energy that also inflicts enemies with Riptide; in melee mode, ''Light of Obliteration'', where he fuses his swords into a double-ended lance which he swings at surrounding enemies, triggering another wide-ranging attack, ''Riptide Blast'', upon marked enemies.\\
\\
As Tartaglia continues to revel in the thrill of battle, he gains the ability to inflict Riptide with his normal and charged attacks in melee mode whenever they score critical hits, in addition to the marks seeing an extended duration. Once he has fully sated his bloodlust, ''Foul Legacy: Raging Tide'' sees a reduced cooldown time; Tartaglia regains some Energy whenever enemies marked with Riptide are defeated; his melee stance can trigger either ''Riptide Slash'' on marked enemies or ''Riptide Flash'' otherwise; and the melee form of ''Havoc: Obliteration'' resets the cooldown time of ''Foul Legacy: Raging Tide''.\\
\\
Tartaglia can only be obtained when the ''Farewell of Snezhnaya'' Character Event Wish is active.
----
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* CutscenePowerToTheMax: Regardless of how well the player does against his Foul Legacy Transformation, the protagonist is just barely holding him off in the cutscene following. In the cutscenes, he demonstrates that he can transform into a trail of water which he uses to escape after freeing Osial. He also thrashes three Ruin Guards using this power in a time that's flat-out impossible in-game.
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* CutscenePowerToTheMax: CutscenePowerToTheMax:
** Regardless of how well the player does against his Foul Legacy Transformation, the protagonist is just barely holding him off in the cutscene following. Much later, he also thrashes three Ruin Guards on his own with this power in a very short time frame that's difficult (if not impossible) to replicate in-game.
** In the cutscenes, he demonstrates that he can transform into a trail of water which he uses to escape after freeingOsial. He also thrashes three Ruin Guards using this power in a time that's flat-out impossible in-game.Osial.
** Regardless of how well the player does against his Foul Legacy Transformation, the protagonist is just barely holding him off in the cutscene following. Much later, he also thrashes three Ruin Guards on his own with this power in a very short time frame that's difficult (if not impossible) to replicate in-game.
** In the cutscenes, he demonstrates that he can transform into a trail of water which he uses to escape after freeing
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** He is ''disgusted'' by how the Court of Fontaine is run, and gives the Chief Justice a short TheReasonYouSuckSpeech before activating his Delusion.
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[[/folder]]
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* SimpleButAwesome: Hydro ties with Anemo for being the best element in Genshin Impact due to the sheer amount of powerful reactions they can initiate once the target is ''wet''.
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* SimpleButAwesome: SimpleYetAwesome: Hydro ties with Anemo for being the best element in Genshin Impact due to the sheer amount of powerful reactions they can initiate with the other six once the target is ''wet''.
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[[WMG:[[center: [- ''VideoGame/GenshinImpact'' '''([[Characters/GenshinImpact Main Character Index]])'''\\
[[Characters/GenshinImpactTravelerAndPaimon The Traveler (and Paimon)]]\\
'''''Playable Characters'''''\\
[[Sandbox/GenshinImpactAnemo Anemo]] ([[Characters/GenshinImpactWanderer The Wanderer]]) | [[Sandbox/GenshinImpactCryo Cryo]] | [[Sandbox/GenshinImpactDendro Dendro]] ([[Characters/GenshinImpactNahida Nahida]]) | [[Sandbox/GenshinImpactElectro Electro]] ([[Characters/GenshinImpactRaidenShogun Raiden Shogun]]) | [[Sandbox/GenshinImpactGeo Geo]] ([[Characters/GenshinImpactZhongli Zhongli]]) | '''Hydro''' | Pyro\\
'''''The Nations of Teyvat'''''\\
[[Characters/GenshinImpactMondstadt Mondstadt]] ([[Characters/GenshinImpactKnightsOfFavonius Knights of Favonius]] | [[Characters/GenshinImpactFourWinds Four Winds]] | [[Characters/GenshinImpactFischl Fischl]] | [[Characters/GenshinImpactMondstadtHistorical Historical]])\\
[[Characters/GenshinImpactLiyue Liyue]] ([[Characters/GenshinImpactQixing Qixing]] | [[Characters/GenshinImpactAdepti Adepti]] | [[Characters/GenshinImpactLiyueHistorical Historical]])\\
[[Characters/GenshinImpactInazuma Inazuma]] ([[Characters/GenshinImpactTriCommission Tri-Commission]] | [[Characters/GenshinImpactWatatsumi Watatsumi]] | [[Characters/GenshinImpactAratakiGang Arataki Gang]] | [[Characters/GenshinImpactInazumaHistorical Historical]])\\
[[Characters/GenshinImpactSumeru Sumeru]] ([[Characters/GenshinImpactAkademiya Akademiya]] | [[Characters/GenshinImpactAlhaitham Alhaitham]] | [[Characters/GenshinImpactCyno Cyno]] | [[Characters/GenshinImpactKaveh Kaveh]] | [[Characters/GenshinImpactEremites Eremites]] | [[Characters/GenshinImpactSumeruHistorical Historical]])\\
[[Characters/GenshinImpactFontaine Fontaine]]\\
Snezhnaya ([[Characters/GenshinImpactFatui Fatui]] | [[Characters/GenshinImpactHarbingers Harbingers]] | [[Characters/GenshinImpactTartaglia Tartaglia]])\\
''Transnational Organizations:'' [[Characters/GenshinImpactAdventurersGuild Adventurers' Guild]] | [[Characters/GenshinImpactHexenzirkel Hexenzirkel]] | [[Characters/GenshinImpactTreasureHoarders Treasure Hoarders]]\\
'''''Gods'''''\\
[[Characters/GenshinImpactArchons Archons]] | [[Characters/GenshinImpactCelestia Celestia]] | [[Characters/GenshinImpactOtherGods Others]]\\
'''''Others'''''\\
[[Characters/GenshinImpactKhaenriah Khaenri'ah]] ([[Characters/GenshinImpactAbyssOrder Abyss Order]]) | [[Characters/GenshinImpactPrehistoricalCharacters Prehistorical]] | [[Characters/GenshinImpactHilichurls Hilichurls]] | [[Characters/GenshinImpactMonsters Monsters]]\\
]] -]]]
! Hydro
[[foldercontrol]]
->'''Archon''': Focalors\\
'''Elemental Reactions:''' Bloom, Crystalize, Electro-Charged, Freeze, Swirl, Vaporize\\
'''Gnosis:''' Unknown\\
'''Strong Against:''' Pyro\\
'''Weak Against:''' Electro, Dendro\\\
----
[[folder:In General]]
%%* ElementalMotifs: Justice
* MakingASplash: Hydro enables control over the element of Water in Teyvat.
* SimpleButAwesome: Hydro ties with Anemo for being the best element in Genshin Impact due to the sheer amount of powerful reactions they can initiate once the target is ''wet''.
[[/folder]]
!! Mondstadt
[[folder:Barbara]]
[[/folder]]
[[folder:Mona Megistus]]
[[/folder]]
!! Liyue
[[folder:Xingqiu]]
[[/folder]]
[[folder:Yelan]]
[[/folder]]
!! Inazuma
[[folder:Kamisato Ayato]]
[[/folder]]
[[folder:Sangonomiya Kokomi]]
[[/folder]]
!! Sumeru
[[folder:Candace]]
[[/folder]]
[[folder:Nilou]]
[[/folder]]
!! Snezhaya
[[folder:Tartaglia]]
* AboveGoodAndEvil: Tartaglia states that things like "good" and "evil" mean very little to him, and he has no real care for duty or allegiance, either. For him, the most important thing in the world is the rush of battle.
* TheAce: Despite his youth, characters consider him an absolute menace on the battlefield due to his skills, and as a Harbinger he naturally commands a great deal of respect within the Fatui.
* ActuallyPrettyFunny: Tartaglia laughs his heart out when he heard that the Traveler, Paimon, and Zhongli fell for the whole "Cocogoat" request of Qiqi. Even after that scene is over, he admits that it has been a long time since he laughed like that.
* AffablyEvil: While he works for the Fatui and their interests, he is a pleasant person otherwise. He sees no problem whatsoever with hanging out with and in multiple ways helping the Traveler and Zhongli while performing his orders to find the Geo Gnosis. Similarly, in his first boss fight where he believes the Traveler has stolen the Gnosis, he notes he is not going to kill them. Afterwards, he genuinely considers himself and the Traveler to be friends. Though it also becomes clear he has a very BloodKnight view of true friendship, and he continues following through on his orders and [[spoiler:summons a fallen god to threaten Liyue in an attempt to draw Morax out]], despite his distaste for it.
* AnimalMotifs: The narwhal, as his constellation, refers to one, and in the battle against him he can [[SummonMagic summon a huge narwhal water elemental]] to attack you.
* AntiVillain: Yes, he is a BloodKnight and one of the Harbingers, but he's also very friendly towards the Traveler and Zhongli, and displays [[EvenEvilHasLovedOnes a love for his family]]. It's even implied by Teucer that if he had a chance, he'd pull a HeelFaceTurn and join the Traveler instead.
* ArcNumber: Eleven. He's the eleventh of the Harbingers, he was released on November 11 (which can be abbreviated as 11/11), and his rerun banner was the eleventh character wish banner overall.
* AwesomeButTemporary: His biggest NecessaryDrawback is that he can't stay in his melee stance for too long, or he will be stuck with his bow that deals relatively low damage for as long as 45 seconds.
* TheBabyOfTheBunch: He's the youngest and newest of the Harbingers but is also one of the most dangerous.
* BadassCape:
** In his [[OneWingedAngel Foul Legacy Transformation]], he gains a cape made out of Electro particles which looks like the mantle of a starry sky.
** His default outfit includes a half-cape that looks like a mix between this and ScarfOfAsskicking.
* BeneathTheMask: Under his mask of a cheerful, confident guy, he is a thinly veiled WolfInSheepsClothing that has a keen sense of bloodlust, working with the Fatui for the thrill of fighting strong opponents.
* BenevolentBoss: He's noted to be cordial and fair with his subordinates, and even during a mock battle with recruits, he makes sure to not go too far. This is in contrast with {{Bad Boss}}es like Scaramouche and Signora, who will verbally abuse and even kill their underlings at the drop of a hat.
* BifurcatedWeapon: In his melee stance, Tartaglia summons a pair of Hydro-enchanted blades, which he can combine into a double-ended spear for ''Light of Obliteration''. Though they look like [[ElementalWeapon weapons]] [[ShapingYourAttacks made entirely out of water]], they are noted to be physical weapons, as he can throw it as a spear and it remains intact for a prolonged amount of time separate from him, and one of the drops from his weekly boss fight is the "Shard of Foul Legacy", which is explicitly noted to be a broken shard of the weapon Childe uses.
* BigBrotherInstinct: Fiercely protective of his younger siblings, to the point that he used his Foul Legacy Transformation even while still injured, just so he could keep Teucer both safe and happy at once.
* BigDamnHeroes: He saves the Traveler and Paimon from the Millelith following Rex Lapis's apparent death. This helps him gain their trust for his plans, even if not by much.
* BilingualBonus: In the Japanese trailer for "Letter to Snezhnaya", he says "Dear Sister" in Russian.
* BloodKnight:
** At his core, he just wants to fight, grow stronger, and then fight even greater fights. It is telling he only starts to truly consider you a friend and comrade after you have a no-holds-barred duel with him. And that his later weekly boss fights have him commenting on how happy he is to have a chance to cut loose with you again.
** His character story tells that, after that unexpected encounter when he was fourteen that changed him, he became a dangerous, ill-tempered troublemaker who stirred up strife wherever he went. His father had to put him into the Fatui to tame him, but he managed to beat multiple well-trained troopers despite his youth. Pulcinella saw his immense potential, and eventually, he worked up the ranks until he became a Harbinger himself.
--->"Good and evil, right and wrong, duty and destiny... are these things really so important? Are they really more appealing than the euphoria of battle and close combat?"
* BlueAndOrangeMorality: Tartaglia is a BloodKnight to such an insane degree that his desire to seek out challenging battles can override any sense of duty he might have. He at one point admits that he considers himself AboveGoodAndEvil, and that seeking out strong opponents to grow stronger himself is what he mainly lives for. He later states directly that he doesn't care about morality, allegiance or duty, all of that takes a back seat to battle.
* BowAndSwordInAccord: His main weapons are bows, but his Elemental Skill has him summon [[DualWielding a pair of short Hydro swords]]. This gives him alternative melee moves with Hydro effects, allowing him to fight in close combat, unlike other archers.
* BowsAndErrors: Justified. When he said he's terrible at the bow, he means it. His stance is very stiff and hunched over, he doesn't pull on the bowstring all the way, and he doesn't even hold the bow properly. Not to mention him ending his combo by outright ''throwing'' an arrow. Compared to the other archers, his form is extremely sloppy, making it a wonder he could even strike his targets at all.
* BreadEggsMilkSquick: He explains his goal is to get stronger, and he will do whatever it takes to achieve that, using Visions, Delusions or even heretical teachings from the Abyss.
* BringIt: One of his Elemental Skill quotes has him say "Bring it on!" when the skill is activated from a standstill. Ironically, he says this when switching from his stronger melee stance to his weaker ranged stance, instead of the other way around.
* TheBrute: Tartaglia is valued by the other Harbingers moreso for his raw power than his tactical prowess. [[spoiler:He was sent to Liyue to cause as much chaos as possible and make him summon Osial so La Signora can convince Zhongli to surrender his gnosis as part of their contract, and was never intended to succeed with his own plan]].
* BunnyEarsLawyer: His overly-cheerful attitude towards battle and philosophy on it comes across as strange to just about everyone he meets, his dislike of scheming makes him something of an outlier among the Fatui, and he even [[spoiler:''slacks off on a mission'' just so he can see what the Traveler will do]]. That said, he's crazy powerful to the point that Paimon outright calls him the strongest on the team (a team which includes [[TheHero the Traveler]]) during the "Labyrinth Warrior" event.
* CastFromHitpoints: His Foul Legacy Transformation puts a tremendous strain on his body. The fight in the Golden House ends when he just cannot sustain it any longer and using it again in the Dottore's Ruin Guard laboratory while still recovering, even just for 10 seconds, takes so much out of him that he would be helpless to stop the Traveler if they wanted to kill him at that point.
* CharClone: He wears a mask, he is TheAce in combat, he is associated with red, he has a complicated relationship with the other villains, and he is a rival of sorts to the Traveler (at least, according to him).
* ChildSoldier: According to his character story, he has been on the battlefield since he was fourteen, and the text implies that he was already an expert in weapons, so he may have trained since he was younger.
* CloudcuckoolandersMinder: Acts as this to an extent to Zhongli, especially when the topic is about money.
* CoolBigBro: He brings back various miscellaneous items like defeated Ruin Guards for his younger siblings to use as toys, and once caught an enormous aquatic creature for them to eat. And from what is seen in his story, it's not an act either: he's genuinely happy to see Teucer in Liyue before doing a DoubleTake and asking him how he even got there from Snezhnaya, goes to a great deal of trouble just to keep Teucer happy (and [[LockedOutOfTheLoop in the dark about the shady nature of his work]]), and unleashes his Foul Legacy Transformation when on the verge of being overwhelmed by Ruin Guards even though he's still recovering from the last time he used it, just so he'd have time to clean them up and place them in innocuous-seeming positions around the room without Teucer having to see him destroying "Mr Cyclops".
* CooldownManipulation: Tartaglia's sixth Constellation upgrade, ''Havoc: Annihilation'', resets the cooldown time of ''Foul Legacy: Raging Tide'' once he returns to ranged mode after unleashing ''Light of Obliteration''.
* CoolMask: He has a menacing-looking red mask that he normally wears to the side of his head. When he activates his Delusion power, he wears the mask properly, and in his Foul Legacy Transformation, his mask grows to cover his whole face and is topped with a single shining circle at the center.
* ComicallyMissingThePoint: In the web series, in an effort to get Tartaglia to understand why people are getting angry, Lumine asks him to imagine if someone agreed to fight him and then stood him up. He responded with confusion, saying that he won't be lying down before a fight.
* CordonBleughChef: His special version of Calla Lily Seafood Soup, 'A Prize Catch' is described as 'looks like a trapped beast floundering in an ocean of blood, its death throes an inaudible scream.' But he explains it's just something he fished, plus some products from his homeland. [[MysteryMeat Whatever they are]].
* CulturedBadass: In-between his work as a Fatui Harbinger and search for stronger opponents, he attends public performances and sometimes gets on stage himself.
* CuteAndPsycho: He presents as a friendly, open man who is easy on the eyes, but this hides an AxCrazy BloodKnight side to him that comes out whenever he is about to do battle.
* CutscenePowerToTheMax: Regardless of how well the player does against his Foul Legacy Transformation, the protagonist is just barely holding him off in the cutscene following. In the cutscenes, he demonstrates that he can transform into a trail of water which he uses to escape after freeing Osial. He also thrashes three Ruin Guards using this power in a time that's flat-out impossible in-game.
* DangerousForbiddenTechnique: His [[OneWingedAngel "Foul Legacy Transformation,"]] using a Delusion in tandem with his Vision (alongside a power that is "not from this world"), takes quite a toll on his body. He is reluctant to use it again for days after his battle with you, and when he must activate it to finish off a large group of ruin guards, he cannot fight at all, only managing to limp away when you take pity on him instead of taking the opportunity to kill him.
* DarkAndTroubledPast: When he was fourteen, Ajax accidentally fell into [[EldritchLocation the Abyss]] and was trapped there for three months surrounded by otherworldly beasts and monsters who could have easily killed him. Under the tutelage of Skirk, a swordswoman within the Abyss, he learned to fight tooth and nail and even use the Abyss's power for his own purposes to survive, and grew a violent streak as a result.
* DeadlyLunge: In his boss battle's second phase, one of his attacks is him rushing towards your character multiple times with his electrified polearm.
* DeathFromAbove: The ranged form of ''Havoc: Obliteration'' has him fire a water arrow upward, which then falls and deals high damage in an area, as well as marking any enemy hit with Riptide. In his boss fight, he can do a series of the same move, and later, he can cover the entire arena with his arrows' blasts.
* {{Determinator}}: In the Domain, Child constantly fights numerous monsters without end, yet only comments that he enjoys it and there's not so much as a scratch on him. He later explains he can survive it all due to his time in the Abyss, and states his goal is to always get stronger, through his determination and will power always improving forever, while those who want an end will find it.
* DifficultButAwesome: With his StanceSystem and Riptide debuff, Tartaglia is among the most technically demanding characters in the game. His primary form of damage-dealing comes from changing to his melee stance, whose power boost and constant Hydro application are offset with a cooldown time that grows in proportion to the duration of the stance (to a maximum of ''45 seconds'' unless he manually switches back to ranged mode). This can be a severe problem since he will be stuck with his (admittedly) mediocre archery longer than he'd want, limited to charged shots until ''Foul Legacy: Raging Tide'' is ready again. In addition, he has two variants of ''Havoc: Obliteration'', with the ranged form applying Riptide to all enemies in range and the melee form dealing strong burst damage (with additional damage on enemies marked with Riptide), forcing the player to choose which one to use. Once you master these, however, Tartaglia will be capable of easily drowning his enemies in a storm of arrows and blades.
* DoesThisRemindYouOfAnything:
** Before your weekly boss battles with him, he will say the following quote, which is dripping with AccidentalInnuendo:
--->"This opportunity is quite hard to come by. Well then. Amuse me. Surrender is a valid option. I promise I'll be gentle."
** The Chinese and Japanese versions are even more explicit.
--->"This opportunity is pretty hard to come by, so please let me indulge. Surrender is still an option, I will treat you extremely gently as the defeated enemy general under my control."
* DoubleWeapon: Certain moves in his melee stances has him combine his swords into a polearm with blades in each end. In his Foul Legacy Transformation, he wields a more ornate version of said weapon.
* DoWellButNotPerfect: [[spoiler: Ultimately the reason he was kept in the dark about the deal between the Geo and Cryo Archons. According to the terms, the Tsaritsa needed Tartaglia to fail, but Zhongli still needed a credible threat with which he could judge Liyue's readiness. Not being informed about the deal meant that Tartaglia would put all his effort into trying to take the Geo Archon's Gnosis. He's understandably pissed when he learns that he was never intended to succeed.]]
* DubNameChange: "Childe" is derived from "Gongzì" in Chinese and "Koushi" in Japanese, both of which refer to a child of a rich family. The French subtitles are a strange case, as they only refer to him as "Tartaglia" and never so much as mention his other name.
* DubPersonalityChange:
** The largest departures from his canon Chinese characterization are in the Japanese and Korean dubs, the former in which he is the most light-hearted and playful of all his depictions while in the latter, he goes the exact ''opposite'' direction and is by far the most serious. To compare, let us take how he reacts to Zhongli tricking him. In the former, he simply laughs it off and looks forward to fighting Zhongli one day, while in the latter he is ''very'' displeased. In English, he is at the very least mildly annoyed, while in Chinese he is a bit more upset but not as much as in Korean.
** {{Downplayed}}, but his first greeting in English to the female Traveler is a cocky and borderline flirty "Hey girlie, hold still," while his equivalent in other languages merely says "Miss, careful, don't move."
* DubPronunciationChange: The English dub pronounces his title with the "g" sound ("tar-tog-lya"), but in the original Italian it's supposed to be silent ("tar-tah-lya"). The other languages get the pronunciation right.
* DullEyesOfUnhappiness: [[https://static.tvtropes.org/pmwiki/pub/images/e65cbc8c_c224_4899_a9cd_76f986f32235.png His eyes lack a shine to them]], in contrast to the other characters, to illustrate his [[BloodKnight general disinterest with most things other than fighting]] and ZenSurvivor TrainingFromHell backstory. One of the few times that they actually ''do'' get a shine in them is when he's talking about his siblings.
* ElementalEyeColours: His eyes are a deep blue, as befitting his Hydro vision.
* EvenEvilHasLovedOnes: He loves his family and goes to extreme lengths not only to protect but also to avoid becoming a BrokenPedestal to his youngest brother Teucer. Indeed, he places his family above his own life, as shown by the fact that he was willing to use his CastFromHitPoints move while in danger of dying from it just to keep his youngest brother from seeing his true nature.
* EveryoneHasStandards: As much of a morally dubious BloodKnight as he is, Tartaglia never approves of being cruel for its own sake, and takes loyalty very seriously.
** He has no love for his fellow Harbingers, particularly La Signora and especially Arlecchino: the former, as he implicitly opposed her habit of executing her recruits just to show off her power, but especially after learning that [[spoiler:she made a fool of him by ordering him to unseal Osial in an an attempt to draw Morax out and steal his Geo Gnosis, even as she merely had Morax/Zhongli negotiate away the Gnosis]]; the latter, due to her habit of betraying others, even suspecting that she may one day turn on the Tsaritsa were she to gain someting from it.
** He expresses regret at [[spoiler:summoning Osial]] because he doesn't like putting weak people in danger.
** For all of his BloodKnight tendencies, he is against picking a fight in the middle of a funeral, which is notable when you remember that the funeral is for that of [[spoiler:the aforementioned La Signora]].
* EvilCostumeSwitch: His outfit while using his Delusion and his Foul Legacy Transformation has a darker color palette than his largely gray and white standard attire.
* EvilCounterpart: To Thoma. Both are visually similar young men who meet the Traveler right after they arrive in a new region and serve as a friendly guide providing aid through their connection to a larger organization. However, Tartaglia's friendliness was a mask to hide his bloodthirsty side and works with the Fatui to undermine Liyue, whereas Thoma is a genuinely friendly man who works with the Yashiro Commission for the betterment of Inazuma. Both men also share a FireWaterJuxtaposition, with Tartaglia being the Water to Thoma's Fire.
* ExposedToTheElements: Averted. During the "A Winter Night's Lazzo" trailer, unlike some of his fellow Harbingers, Tartaglia is dressed appropriately for the bone-chilling cold of Snezhnaya under his cloak, with a thick scarf and heavy clothes.
* FalseFriend: Downplayed for both his friendship with the Traveler and Zhongli. While he was using both to further goals of the Fatui, he makes it clear that he has no personal issues with either of them and still considers the Traveler [[FriendlyEnemy a friend after everything]]. In Zhongli’s case, he sees him as a WorthyOpponent at the end and both characters' dialogues about each other say that they either still spend time together or plan to further down the line.
* FashionableAsymmetry: His shirt is slightly open on his right side, his ScarfOfAsskicking hangs off his left shoulder, he wears a single pauldron on his left shoulder, and he wears one earring on his left ear.
* FieryRedhead: He has orange hair and is brash and spirited, particularly during a good fight.
* {{Foreshadowing}}: [[spoiler:The monstrous transformation he undergoes when drawing on the power of the Abyss is a big hint as to the circumstances of [[WasOnceAMan the Abyss Order]]]].
* {{Forgiveness}}: While never outright ''stated'', it does run in the background of his relationship with the Traveler. The Traveler can initially chose dialogue options expressing hostility after [[spoiler:Tartaglia sics Osial on Liyue to lure out Rex Lapis out]], and even without them is justifiably wary. However, his Story Quest sees them [[DefrostingIceQueen gradually warming up to him]], searching for him after he uses Foul Legacy to protect Teucer, and telling him to "go in peace." During the "Labyrinth Warriors" event, the Traveler is worried for him when he got trapped in the Mystic Onmyou Chamber. Finally, when talking to him in the Serenitea Pot, the Traveler expresses excitement at going on a trip with him. This is particularly noticeable in contrast with the Traveler's almost murderous attitude towards the other Fatui Harbingers, Signora and Scaramouche.
* FriendToAllChildren: It's shown in several events that he's great with kids, probably due to his big brother nature.
** Xinyan quickly latches onto him as a "big brother" in the "Labyrinth Warrior" event.
** In the "Stone Harbor" event, one of his random encounters is with a little girl who wants to know if fairy tales are real; if the Traveler allows him to handle it, his words to her leave her glowing with joy.
** In the "Outside the Canvas, Inside the Lens" event, he rescued a child from a camp of monsters they were about to walk into, which caused him to strike up a friendship with the similarly good-with-kids Yoimiya and her group.
* FriendlyEnemy:
** Despite being a part of a villainous organization, his bloodlust, and the fact that he was using the Traveler all along to further the goals of the Fatui, Tartaglia doesn't appear to have anything against the Traveler personally and still considers them a friend after they defeat him, to the point Teucer can identify them solely from a letter he wrote back to them that described the Traveler solely in friendly terms. He admits it might be one-sided on his end, but dialogue options allow them to return the sentiment; other things like the "Labyrinth Warriors" event and the Serenitea Pot indicate they eventually do. Also, if he joins the Traveler's party by pulling for him during his Event Wish banner and their Friendship Level is high enough, he will even give the Traveler some info about the rest of the Harbingers.
** Also with Zhongli, in that their voice lines imply that they still spend time together despite everything.
* FromNobodyToNightmare: He was originally a normal, shy boy who simply wanted to go on an adventure until he fell into the Abyss and spent three months fighting for his life. He emerged a very different person, having developed a sheer bloodlust. His father sent him to the Fatui in hopes of taming this new side of him, which only had the opposite effect to the point that he quickly rose up its ranks and became a Harbinger.
* GameplayAndStorySegregation:
** You can pull him from the gacha and bring him along on your travels even before completing the main Liyue storyline in Chapter 1 Act 3 of the Archon Quests, where he is explicitly still your enemy acting on the orders of the Fatui to find Morax's gnosis, to the point where you must have a BossFight with him over it. You can also bring the playable Tartaglia into the Tartaglia BossFight, making there be two Tartaglias with no explanation.
** Fatui enemies in the overworld will attack him on sight just like any other party member, and you need their insignias to ascend him, encouraging you to beat them up with him. If you somehow manage to aggro enemies from a different faction, [[GangUpOnTheHuman the Fatui will ignore them in favor of attacking you.]]
* GeniusBruiser: Lest one mistake him for just a bloodthirsty brute, remember that Tartaglia did carry out a plot to steal the Geo Gnosis that would have succeeded had [[spoiler:his own side not set him up to fail]]. He also makes very accurate inferences about Shiki Taishou and correctly analyzes the situation outside the Mystic Onmyou Chamber, based on a few sentences from the Traveler and Xinyan, in the "Labyrinth Warrior" event.
* GigglingVillain: During his boss battle, he [[https://www.youtube.com/watch?v=0QQa0tYsftE laughs cheerfully]] as he tosses attack after attack at you, matching [[BloodKnight his]] [[CuteAndPsycho personality]]. This is especially prominent in the Japanese dub, resulting in [[https://www.youtube.com/watch?v=6hcGcYYbDcE compilations being made of his giggles]].
* GivenNameReveal: His third character story reveals his real name to be Ajax.
* GlassCannon:
** Out of all the weekly bosses, Childe has the lowest overall HP, and can easily be taken down in all three of his phases. The reverse also applies, as he hits ''extremely'' hard and fast all while heavily staggering your characters and can easily kill your party in a few hits if you can't dodge his attacks.
** Downplayed as a playable character; he is still a powerful hard-hitting Hydro DPS fighter, but his bare HP and Defense stats are on par with those of melee characters than that of an archer.
* GoKartingWithBowser:
** Being a Fatuus won't stop him from joining you on your travels if you pull him. He even has a line where he muses that his fellow Harbingers must know of his 'dealings' with you and that he would love to see the looks on their faces.
** Taken almost to the extreme with you being able to invite him over to your Serenitea Pot (aka your ''house''). If you do, he brings up a bunch of other ideas for casual events (fishing, drinking, and sparring) for the pair of you to do.
** As of version 3.7, Tartaglia becomes a new addition to the pool of character cards in Genius Invocation [=TCG=], which also means he can come over to The Cat's Tail to participate in friendly card games.
* GoneHorriblyWrong: After three months stranded in the Abyss as a fourteen-year-old, Ajax emerged a battle-hungry troublemaker. Not knowing what to do, his father sent him to the Fatui, hoping they could discipline him. Instead, this merely allowed him to express his violent urges on the battlefield, embracing his bloodlust such that he quickly rose up its ranks until he became one of the eleven highest-ranking officers of the Fatui, answering to no one but the Cryo Archon herself.
* GuideDangIt: His boss fight has a unique hidden mechanic where he counterattacks when hit with Hydro in the first phase, Electro in the second, or both in the third. This is difficult to notice when fighting him since the counterattacks are no different from his normal attacks, so you will not notice it unless you fight him multiple times with teams of different elements. Simply avoiding those trigger elements makes the fight significantly quicker and easier.
* HatedByAll: By the end of the Liyue Archon Quest, [[spoiler:Tartaglia role in the Osial crisis has made him a pariah, to the point that the Snezhnayan diplomatic corps would have gladly left him to the Qixing's mercy as a peace offering but for his lofty position as Harbinger]].
* HeelFaceTurn:
** According to Teucer, there's a part of Tartaglia that ''wants'' to leave the Fatui. He genuinely likes the Traveler, doesn't get along with the rest of the Harbingers, and just wants to go wherever he'll get into the most fights, all of which gives him plenty motivation to do so. However, he has too much respect for the Tsaritsa to just turn his back on her on a whim.
** During he "Labyrinth Warriors" event, he shirks off his mission to deal with [[spoiler:Scaramouche apparently going rogue with the Electro Gnosis in tow]], instead opting to continue observing the Traveler, as well as find more excuses to fight some more.
* HiddenDepths:
** For all his bloodlust, Tartaglia is genuinely devoted to his family, to the point where he willingly bore the strain of his Foul Legacy Transformation once again even while still recovering from his last usage just so Teucer would not have to watch him destroy his beloved "Mr. Cyclops." When the Traveler finds him in the aftermath, Tartaglia, clearly exhausted and in massive pain, muses about how easily one can break childhood dreams, and asserts that he needs to protect them at any cost.
** One of his hobbies? ''Fishing'', as in sitting still for long periods of time and waiting for a catch. It's not the sort of activity one would expect a BloodKnight like him to enjoy, but he considers it a good form of meditation. He also states that he believes the patience and decisiveness required for fishing to be quite similar to what is required for combat.
** Both the "Stone Harbor" event and his Story dialogue reveal that he frequently attends public performances, and sometimes even gets on the stage himself. It's also implied the type of these performances are dancing of some sort, as Paimon mentions he's skilled at that.
** Despite being easily strung along by La Signora and Zhongli, Tartaglia is actually good at deduction, quickly figuring out the state of things outside the Mystic Onmyou Chamber are putting pressure on the Traveler, which has them on edge.
* HouseHusband: Well, house ''brother'' in this case, but the story says that he is good at cooking and cleaning, due to having three younger siblings.
* HumanWeapon: Reconstructed. Tartaglia sees nothing wrong with being used as a weapon, and when Shiki Taishou believes he is a discarded weapon, the Harbinger tells about how he fell through the Abyss and used it to become stronger. He calls himself a weapon and says his goal isn't victory, but improvement, and that he will forever fight and continue to strengthen himself as one while those who wish for an end will find one.
* IAmNotLeftHanded: ''Foul Legacy: Raging Tide'' allows him to switch from his bow to dual swords, which he is more proficient in. And in his boss fight, he reveals that he has more powers at his disposal than just a Hydro Vision, thanks to his Delusion and apparent knowledge of Abyss sorcery.
* IHaveManyNames: Has three, with the third one revealed [[RelationshipValues when his friendship with the player raises high enough]]. "Tartaglia" is his title as a Harbinger; "Childe" is an alias he used throughout the Liyue Archon Quest; and "Ajax" is his birth name.
* IronicName: Tartaglia means "stutterer" in Italian, and he has quite the way with words. However, his name is a reference to a stock character from CommediaDellArte who does stutter, but whose role and personality in the story would change from play to play depending on what the writers needed, like how the game's Tartaglia can swap from bow to melee to fill different niches, and also wore a mask.
* KlingonPromotion: A voiceline from Zhongli implies that Tartaglia has advanced through the Fatui by killing his rivals, and when his position is threatened after the events of the Liyue Archon Quest, he will be violently dealing with those who are aiming for his seat among the Harbingers.
* LateArrivalSpoiler: It is possible to pull Tartaglia before reaching the Liyue Archon Quest and thus have his nature as a Harbinger spoiled by his character profile.
* LegFocus: The cutscene leading up to his boss fight's third phase has the camera pan up his legs and rear after Tartaglia resorts to his Foul Legacy transformation.
* {{Leitmotif}}: He receives one in his debut trailer, A Letter to Snezhnaya, titled "[[https://www.youtube.com/watch?v=AXjnVSZozYI Letter from Ajax]]".
* ALighterShadeOfBlack: He's willing to do some horrible things because of his addiction to battle, but it also makes him a more straightforward antagonist; since he's constantly on the search for a good fight, his thinking often centers around getting an epic showdown or two, especially when he has a WorthyOpponent in his sights. Picking on the weak [[NobleDemon is normally beneath him]], and he's genuinely apologetic when he had to when he [[spoiler:unsealed Osial, threatening to destroy Liyue Harbor in an attempt to draw Morax out of hiding]]. Contrast with the cruelty of La Signora and Scaramouche, [[spoiler:where the their plots in Inazuma destroyed the lives and livelihoods of many, unleashed disasters that rendered two whole islands nearly uninhabitable, and plunged the country into a bloody civil war that they took further advantage of by supplying the Resistance with life-stealing Delusions]]. And then there's the terrifying sociopathy of Dottore, [[spoiler:who pandered to the Akademiya's desperation over the passing of Rukkhadevata, the previous Dendro Archon, and their disdain for her less-academically-inclined successor Kusanali, to encourage them into turning Scaramouche into their new God of Wisdom, even as he sees all this as little more than an experiment to observe, to say nothing of how he drove Scaramouche insane centuries ago by murdering his loved ones and then lying to him that they betrayed him]].
* LockedOutOfTheLoop: Suffice to say, his fellow Harbingers don't seem to be forthcoming with important details about his missions.
** He is completely unaware of [[spoiler:Zhongli and Signora's backroom deals, where the former will have to give up his Gnosis. He is annoyed about being an UnwittingPawn for their plan when the dust settles]].
** Likewise, [[spoiler:he is dispatched to Inazuma with orders to hunt down Scaramouche and retrieve the stolen Electro Gnosis. Both were already in Fatui custody in Sumeru, being experimented on by Dottore as part of his project to create a manmade god. Whether Dottore was acting alone or with the knowledge of Pierro and the Tsarista is unknown, but either way Tartaglia's mission to Inazuma was a wild-goose chase that ended as soon as Dottore declared his experiment a failure]].
* MakingASplash: Has a Hydro vision. Unlike other characters, it is not the only trick up his sleeve (at least in-story).
* ManaDrain: His second Constellation upgrade, ''Foul Legacy: Understream'', restores 4 Energy for Tartaglia whenever enemies afflicted with Riptide are defeated.
* ManipulativeBastard: He spends the Liyue Archon Quest deceiving the Traveler into aiding him and using them to earn the trust and connections he, as a Harbinger, never could. In addition to dropping hints that the Qixing might be behind Rex Lapis's death, he also has the Traveler followed and eavesdropped on to learn where the Qixing had hidden the Exuvia.
* MarkedToDie:
** As a playable character, Tartaglia's fighting style revolves around inflicting Riptide marks, either through charged shots, ''Riptide Burst'', or ''Flash of Havoc'', which last ten seconds and trigger different attacks that deal wide-ranging Hydro damage: ''Riptide Flash'' with fully-charged shots, which periodically deals damage (with at least 0.7-second intervals); ''Riptide Burst'' should the marked enemy fall, which triggers an explosion that also inflicts Riptide on surrounding enemies; ''Riptide Slash'' when attacked by Tartaglia in melee mode (with at least 1.5-second intervals); or ''Riptide Blast'' through ''Light of Obliteration'', which clears the mark in exchange for heightened damage. Both his ascension passives also prioritize in enhancing Riptide--that for his first, ''Never Ending'', extends its duration to eighteen seconds, while that for his fourth, ''Sword of Torrents'', allows him to inflict Riptide whenever his normal or charged attacks in melee mode score critical hits.
** As a boss, Tartaglia's easy-to-avoid attacks apply Riptide on hit and he only uses strong and difficult-to-avoid attacks when the player is marked by Riptide. To remove the Riptide, the player needs to walk to the border of the arena, which temporarily inflicts Pyro.
* MechanicallyUnusualFighter: Tartaglia is the first character whose field passive is directly combat-related, and as of v3.4, the only one restricted to that (at least Kokomi has a second field passive that is non-combat-related).
* MirrorCharacter: To Scaramouche/Wanderer, the other playable male Harbinger.
** Despite being a BloodKnight, Tartaglia is [[AffablyEvil genuinely friendly]] towards the Traveler, speaking highly of them on several occasions. Scaramouche, on the other hand, is very vitriolic, even after his HazyFeelTurn.
** Tartaglia has the decency to at least feel bad about innocents getting hurt in his plan to lure out Morax, while Scaramouche displays a LackOfEmpathy for humanity in general.
** Tartaglia is a BenevolentBoss to his subordinates, whereas Scaramouche is [[BadBoss the opposite]].
** Tartaglia has an UndyingLoyalty to the Tsaritsa, while Scaramouche is a WildCard with no real allegiance to anyone other than himself (even having joined the Fatui [[ItAmusedMe out of amusement]]).
** Tartaglia has a family back home who he loves dearly, while Scaramouche is angry at Ei for seemingly abandoning him.
** As of v3.4, Tartaglia is still a Harbinger, while Scaramouche has deserted them.
* MoralityPet: His family, particularly his little brother Teucer. Tartaglia does his best to [[LockedOutOfTheLoop keep Teucer out of learning the shadier nature of his work]] by passing himself up as a toy salesman. When Teucer visits him during his Story Quest, Childe often must moderate his behavior so Teucer does not see him do anything unsavory.
* MultiMeleeMaster: His melee stance shows he is very proficient with knives and polearms.
* MySpeciesDothProtestTooMuch: According to his entry in the Collected Miscellany, he is the only Harbinger to relish a head-on fight. According to his character story, this tendency leads the other Harbingers to [[ReassignedToAntarctica put him in missions far away from Snezhnaya]] to avoid fallout.
* MythicalMotifs: Two of them, associated with Myth/ClassicalMythology:
** His real name is Ajax, named after Ajax the Great, who also had a brother named Teucer.
** His elemental powers are Water and Electricity, both of which are associated with Poseidon, who was the god of storms. One of his attacks as a boss involves a giant whale made of water coming out.
* NecessaryDrawback: Tartaglia's Elemental Talents have some of the highest damage multipliers in the game, and Riptide allows him to wipe out hordes of enemies singhlehandedly. However, he's saddled with a massive cooldown as drawback to ensure he won't be a game-breaker. It's telling that unlike other characters, ''none'' of his Constellations directly upgrade his damage, but plenty that affect said cooldown.
* NeverMyFault:
** During his Story Quest, if the Traveler expresses anger towards him over the events of the Liyue Archon Quest, Tartaglia brushes them off, saying that [[spoiler:he was just a pawn in those events]]. This ignores that, while he was [[spoiler:kept in the dark about Zhongli and Signora's deal]], he had already put into process his plan to manipulate the Traveler and [[spoiler:unleash Osial]] without objection. In particular, he had been planning to [[spoiler:free Osial long before any deception occurred, as he had already been producing copies of the Sigil of Permission before Rex Lapis' supposed death]].
** In a separate case of DubPersonalityChange, the line is more understandable in Chinese, where he says that both the Traveler and himself were pawns in the greater scheme of things, and as he would rather leave the actual battle to the ones actually playing the game, he hoped it wouldn't affect them being friendly still.
* NiceMeanAndInBetween: The In-Between of the three bosses-turned-playable-characters. He's not vitriolic and contemptuous of others like Scaramouche/Wanderer, but he's ''far'' too much of a BloodKnight to be as nice as Ei.
* NiceJobFixingItVillain: Getting the Traveler to set the Qixing and the adepti against one another means that all the needed players are already on the scene [[spoiler:when Osial breaks free, which gives Liyue the best shot possible at defeating the ancient god and passing its Archon's final test]].
* NobleDemon: Despite his [[BlueAndOrangeMorality bizarre morality]], Tartaglia has several streaks of integrity that make him stand out from the rest of the Fatui. He never breaks his word, doesn't like endangering innocents or the weak, strongly believes in protecting the innocence of children, and makes it clear to the Traveler that he respects them too much to attack them while their guard is down. This trait is also carried in his boss battle, he won't start attacking unless the player starts moving.
* NotInThisForYourRevolution: He does not care much for the Tsaritsa's plans, and mostly respects her for her strength and the fact she gives him ample chances to fight (though he does admit he admires her as a person, describing her as a gentle soul who had to harden herself). In a bit of GameplayAndStoryIntegration, his lines make it clear the Traveler could get him to betray the Fatui with the promise of more duels together and the fights the Traveler gets into over their journey through Teyvat.
-->"I'm not someone who cares for allegiance and affiliation. Good and evil, right and wrong, duty and destiny... are these things really so important? Are they really more appealing than the euphoria of battle and close combat?"
* OddFriendship:
** With Zhongli. Promotional material treats them as a pair, and they are very friendly toward each other despite their differing personalities. Tartaglia tends to [[CloudcuckoolandersMinder keep Zhongli's spendthrift tendencies in check]] if he is not outright supplying him with Mora, while Zhongli is aware of but otherwise tolerant of Tartaglia's bloodlust, despite knowing that Tartaglia kills those who oppose him. It's implied that even after TheReveal that [[spoiler:Zhongli is Rex Lapis and had been manipulating Tartaglia the whole time]], they are still on friendly terms and occasionally go out for drinks.
** During the "Labyrinth Warriors" event, he develops one with Xinyan.
** Apparently he's ''still'' hanging around Inazuma as of v3.4, as the player can find him playing a game with Yoimiya and her friends, [[TheComicallySerious though he doesn't realize that it's one.]]
* OhCrap: His happiness at seeing his younger brother Teucer again in Liyue very quickly changes to the horror that he came there from Snezhnaya, especially when ending up separated from him in Dottore's Ruin Guard laboratory.
* OneManArmy: He spends days in the Domain in the "Labyrinth Warrior" event all by himself, fighting hordes of enemies, and not only survives but ''thrives''. When Xinyan exclaims he looks like he's been in a war, he just laughs and says he lost track of how many battles he's had.
* OneWingedAngel: Has the "Foul Legacy Transformation," which incorporates the powers of both his Vision and his Delusion, allowing him to use both his Hydro and Electro powers in tandem. He does not have the constitution to use it for too long though.
* PetTheDog:
** Despite his faults, he genuinely seems to care about his siblings Anthon, Teucer and Tonia.
** He does his best to cheer up Shiki Taishou when he has a crisis upon realizing he may have been discarded by his master. Childe even reveals his DarkAndTroubledPast to him (something, it should be noted, he never speaks of), explaining they [[NotSoDifferentRemark aren't so different]] as weapons.
* PowerFloats: During his Foul Legacy mode, he floats above the ground. On the third phase of his boss battle, he even slowly descends from the destroyed ceiling to the arena.
* PowerMakesYourVoiceDeep: His Foul Legacy Transformation heavily distorts his voice.
* PowerStereotypeFlip: Tartaglia is a BloodKnight obsessed with fighting, who has to be specifically ordered not to employ violence as his first course of action, having little interest for subtler approaches and plotting. However, as a playable unit, he only uses his Hydro Vision, allowing him to manipulate water to fight.
* PromotedToPlayable: Started as a non-playable Liyue main story character before becoming summonable as a unit in the Wish system. For obvious reasons, his playable version is nowhere near as powerful as his boss fight.
* PsychopathicManchild: Very Downplayed. Tartaglia has a cheerful, childlike personality that is actually genuine but is also a BloodKnight who is obsessed with battle.
* PunchClockVillain: The Liyue Archon Quest gradually reveals that Tartaglia is with the Fatui merely to satisfy his urge to battle, which evolved from having been originally sent there by his father in an attempt to discipline him after he developed a bloodthirsty streak after three months in the Abyss as a youth. Similarly, he considers quitting the Fatui and joining the Traveler in their journey not so much out of any moral objection as much as excitement over the prospect of getting into more fights.
* RedemptionDemotion: He's ''far'' more powerful as a boss than as a playable character, and he doesn't use the same amount of skills or transformations he's shown to be capable of, though this is justified to a degree as if he had the same abilities as a playable unit as he does like a boss, he would be far too game-breaking as a unit. The InUniverse explanation is that his Foul Legacy Transformation hurts him to use for long. Just using the form for ten seconds while not at his peak during his story quest left him drained and defenseless to the point that the Traveler can point out that they can kill him right there and then.
* RedOniBlueOni: The combative, headstrong Red to Zhongli's calm and collected Blue.
* ReligiousAndMythologicalThemeNaming: His real name, Ajax, comes from the famed hero and warrior Ajax the Greater from ''Literature/TheIliad''. His little brother, Teucer, also takes his name after Ajax's half-brother. Similarly, Ajax the Greater is known for wielding spears, and one of Tartaglia's strongest moves involves attacking with a Hydro-enchanted double-ended spear.
* SequentialBoss: He has three phases when you fight him in the Golden House; he sticks to his Hydro Vision in the first, then switches to his Electro Delusion in the second, and then turns into his Foul Legacy transformation in the third. Each transition also fully restores his health.
* SeriousBusiness: Believes the arts of war and ''cooking'' are not that different, and challenges you to... try the meal he'll make for you.
* ShellShockedVeteran: Not in regards to however many battles he's been in--those are all good fun to him--but to his TrainingFromHell in the Abyss. He has DullEyesOfUnhappiness because of it and his character story goes so far as to say it's ''something he never talks about''.
* ShipTease: With the traveler.
** Beyond his [[DoesThisRemindYouOfAnything suggestive]] weekly boss dialogue, his personal quest reveals that he's written home about the Traveler so much and in such glowing terms, his little brother recognizes and trusts them on sight.
** On several occasions, he mentions wanting to introduce the Traveler to the rest of his family and give them an extended tour of his homeland. The Traveler accepts, at first claiming because they promised Teucer, but when Childe starts making plans in the Serenitea Pot, their dialogue is legitimately excited.
* ShockAndAwe: His fight in the Golden House reveals that in addition to his Hydro Vision he also has an Electro Delusion, which he switches to in the second stage of his Boss Fight.
* ShownTheirWork: As [[https://youtu.be/l8YXe7EkmoU?t=854 mentioned]] in the v2.0 Special Program, Tartaglia's melee stance incorporates elements of swordplay with the [[https://en.wikipedia.org/wiki/Shashka shashka]], a single-bladed, single-handed, guardless backsword associated with the [[https://en.wikipedia.org/wiki/Cossacks Cossack peoples]] of southern Russia and Ukraine designed for pure offense with little in the way of defense, used for dealing powerful, hard-to-dodge blows and [[JustForPun changing the tide]] of the battle in a couple of swift, sudden strikes, all of which aligns with Tartaglia's melee stance being at its most efficient when used sparingly.
* SituationalDamageAttack: His fourth Constellation upgrade, ''Abyssal Mayhem: Hydrospout'', allows his melee stance to either inflict ''Riptide Slash'' on enemies marked with Riptide or ''Riptide Flash'' otherwise (with at least four-second intervals).
* SkewedPriorities: Tartaglia puts more importance in preserving Teucer's innocence more than keeping themselves out of dangerous situations. Not only does he allow his brother into a Ruin Guard research facility, [[spoiler:but he uses his [[DangerousForbiddenTechnique Foul Legacy Transformation]] so that he can defeat a bunch of Ruin Guards before Teucer sees him, even though he was still recovering from the last time he used it, which puts his life completely at the Traveler's mercy]].
* SlidingScaleOfGameplayAndStoryIntegration:
** Tartaglia's younger brother Teucer will tell the Traveler that had were his brother had his way, he would have quit his job and join the Traveler on their journey, explaining what exactly happened if you recruited the playable version of him. He will also still express a BloodKnight desire to duel with you, explaining his weekly BossFight which can be unlocked after the Liyue Archon Quest. [[GameplayAndStorySegregation This will not explain why he is on your team if you pulled him before completing the Liyue storyline though]].
** Tartaglia doesn't seem to be lying when he claims that the bow is his worst weapon. Aside from his ranged stance's lower damage output compared to his melee stance, [[https://youtu.be/0iU3E82tAvI?t=553 a side-by-side comparison]] of him and other archers' normal attack combo shows that, where the others demonstrate graceful, practiced movements and precise footwork, his are stiff and clumsy to the point of comedy, and he ends his by outright throwing an arrow. Even Kujou Sara, who has the most straightforward archery style, at least has better control.
** Using Foul Legacy puts a strain on his body. Gameplay-wise, this translates to the cooldown time of ''Foul Legacy: Raging Tide'' increasing in proportion to the duration of his melee stance.
** Being a BloodKnight, Tartaglia would love a good fight even with his fellow Fatui. Perhaps unsurprisingly, among his ascension materials are Fatui Insignias. And he's also one of the few characters whose utility passive is directly combat-related (increase your whole party's Normal Attack level).
* SnipeHunt: His mission to [[spoiler:track down Scaramouche and reclaim the Electro Gnosis]] was [[AllForNothing pointless from the start]], since [[spoiler:Dottore had custody of both and was using them for a grand experiment in Sumeru]]. Whether or not he was deliberately sent on a wild goose chase is unclear, but either way it ended up being a waste of time. For his part, Tartaglia didn't mind it because at least he was able to do some sightseeing, went adventuring with the Traveler, made new friends, and collected gifts for his siblings.
* SpiritedCompetitor: He doesn't care about whether he wins or loses a battle--what really matters to him is the self-improvement and breaking of his own limitations. He's thrilled to discover the Traveler is a WorthyOpponent for that reason and takes his defeat in the Golden House with good cheer.
* StanceSystem: ''Foul Legacy: Raging Tide'' allows Tartaglia to switch from the ranged stance to the melee one, where for thirty seconds he enjoys enhanced damage potency and a Hydro effect that cannot be overridden with infusions, in addition to the ability to trigger the wide-ranging ''Riptide Slash'' upon enemies marked with Riptide, albeit at the expense of a lengthy cooldown time proportional to its duration (at a rate of 1.5 seconds of cooldown per one second of the stance, to a maximum of 45 seconds unless he manually switches back to ranged mode). ''Havoc: Obliteration'' also has different wide-ranging attacks depending on his stance: ''Flash of Havoc'' in his ranged mode, which applies Riptide on enemies struck, and ''Light of Obliteration'' in his melee mode, which additionally triggers ''Riptide Blast'' on marked enemies. His first Constellation upgrade, ''Foul Legacy: Tide Withholder'', reduces its cooldown time by 20%, hence reducing the maximum cooldown time to 36 seconds, and his sixth, ''Havoc: Annihilation'', resets the cooldown time once he returns to ranged mode after using ''Light of Annihilation''.
* SummonMagic: One of his attacks as a boss is to summon a Hydro narwhal to divebomb the Traveler. Much like his shortswords, it might look like [[ShapingYourAttacks Childe simply shapes his water into a narwhal]] but one of the materials acquired after his storyline boss fight is a broken piece of this narwhal's horn, meaning the narwhal is an actual living entity Childe summons rather than something he creates with his Vision.
* TeethClenchedTeamwork:
** He does not like Signora. [[spoiler:He mocks her for running from a fight with such a worthy opponent as the Traveler, and is so furious at being a pawn in her backroom deals with Zhongli that he refuses to share a boat with her even though he knows there's considerably less he can hope to do in Liyue with his ruined reputation]].
** He doesn't seem to get along well with the other Harbingers, having only bad things to say about the majority of them, disparaging their motives or finding them just plain creepy. The feeling seems mutual, such as Tartaglia wondering why Sandrone always looks like she wants to kill him.
* TeleportSpam: In his boss fight, he {{Flash Step}}s around the arena a lot.
* ThisIsGonnaSuck: Near the end of his Story Quest, both he and the Traveler took out several Ruin Guards in under a minute, before more show up. He gives an awkward smile before activating his [[DangerousForbiddenTechnique Foul Legacy Transformation]] to take them out, despite knowing it's going to take a massive toll on his body.
* TokenEvilTeammate: As of Version 3.4, Tartaglia remains the only Fatui-aligned playable character, since Scaramouche has deserted them when becoming playable.
* TokenGoodTeammate: That said, compared to his fellow Harbingers like Signora, Scaramouche, or Dottore, all of whom care nothing about others and place no importance on other people's lives, Tartaglia is genuinely AffablyEvil, has some redeeming traits like his love for his family, is vaguely suggested by Teucer to want to pull a HeelFaceTurn, and has the decency to feel slightly bad about the innocent lives that will be caught in his plan to summon Osial. This doesn't stop him from lying or manipulating others or endangering innocent lives as part of his job, of course, but it puts him above his fellow Harbingers.
* TooSpicyForYogSothoth: Despite being a BloodKnight whose abilities make him a borderline HumanoidAbomination, he finds Columbina unsettling enough that [[OOCIsSeriousBusiness he refuses to fight her]].
* TrainingFromHell: As a fourteen-year-old, Ajax got lost in a snow-covered forest before falling into a hole implied to lead to an Abyssal Domain. There he met a mysterious swordswoman named Skirk, who taught him how to fight and survive, as well as harness the Abyss' power. To him, it lasted for three months, but for his family who found him, [[YearInsideHourOutside it only happened for three days]]. This experience is something he would never tell anyone and said to "mark the end of his youth."
* UltimateJobSecurity: In the aftermath of the Osial crisis, the Snezhnayan diplomatic corps were ready to throw Tartaglia to the wolves, and would have gladly done so but for his position as a Harbinger granting him diplomatic immunity for the time being.
* TheUnfettered: In his eyes, if it helps him to grow stronger and allows him to fight stronger enemies, it's good, no matter what it is or where it comes from.
-->"If it makes me stronger, I'll take it. Vision? Great. [[CastFromHitPoints Delusion?]] Don't mind if I do. [[TheDarkArts Heretical teachings from the Abyss?]] Sign me up."
* UnfortunateNames: While his English alias, "Childe," is an archaic word that refers to a young noble (and thus an accurate translation of the Chinese), the fact that it's pronounced exactly like "child" makes it rather difficult to take him seriously. When you meet him for the first time, Paimon even {{lampshades}} the implications of it.
-->'''Paimon:''' Childe? What, so we're supposed to dote on you?
* UnusuallyUninterestingSight: As of version 3.7, if he appears in The Cat's Tail to play [=TCG=], none of the people inside seem to be freaked out over the presence of a dreaded Fatui Harbinger in public.
* UnwittingPawn: For both Zhongli and Signora, [[spoiler:who made a contract behind his back. Zhongli not only got Tartaglia to pay for Rex Lapis's expensive funeral but fooled him into thinking he was dead, and his Gnosis was ripe for the taking]]. Signora on her end manipulated him into [[spoiler:only aiding her plot to obtain the Gnosis from Zhongli through a contract]].
* UsedToBeASweetKid: He's described as having grown up a normal, even ''shy'', boy. Then he fell into the Abyss, and whatever he experienced down there made him emerge as a BloodKnight.
* VagueAge: Played with. He is one of the few characters that has his official description give him an age range that he could be around as it says he is a teenager, but it does not specify his exact age. Appearance-wise, he looks like a young adolescent, but he could potentially be younger. [[note]]This only applies to the English translation, as the Chinese and Japanese versions of his bio say that he's a "Youth" ("Qīngnián/Seinen"), using a word that denotes a person in their late teens or early twenties.[[/note]] His talk about drinking (alcohol) in the "An Organization Known as Wangsheng" story confirms that he must be over 18. The localization team quietly corrected his bio in v1.2, changing it from "teenager" to "young adult."
* VillainousBreakdown: During his duel with the Traveler in the Golden House, Tartaglia loses his cool [[spoiler:when he tries to extract the Geo Gnosis from what was supposedly Rex Lapis's corpse and finds it absent]]. He accuses the Traveler of having filced it beforehand despite their insistence otherwise and goes OneWingedAngel to make them pay, though he calms down after being defeated and rationalizes that they have not, as well as intuiting that [[spoiler:Morax may have faked his death]].
* VillainsOutShopping: A particularly literal example happens during the "Outside the Canvas, Inside the Lens: Greenery Chapter" event, where he's found in Chinju Forest hanging out with Yoimiya after finishing some "business," as he calls it. During their last conversation he's actively wondering whether he has the Mora to cover everything Yoimiya suggests as souvenirs for his younger siblings.
* WakeUpCallBoss: Being a boss just after a player ranks up into a new World Level, Tartaglia is problematic for unprepared players as he is a boss who likes to teleport behind and unleash devastating combos to anyone who is not privy to his attack patterns. His second phase is especially tricky to manage, as his Electro Delusion's specialty is a flurry of dashes and slashes, at a point in the game where all enemies have a slow and predictable attack pattern, Tartaglia forces players to be quick with spotting his tells while running around the arena avoiding his combos.
* WarriorPoet: While a battle-loving BloodKnight through and through, Tartaglia can be surprisingly eloquent at times, both in philosophy and imagery.
-->"A warrior must always be ready to face any challenge with his blade. The outcome of the battle is irrelevant--what matters is what you learn from the experience."
-->"The skeletal-white snowscape devours life without leaving any trace. It is the invisible enemy we fight against each day."
* WeCanRuleTogether: Brings up that the pair of you would be absolutely unstoppable if you decided to join him in world domination in one of his Serenitea Pot conversations, then asks if you're up for it.
* WildCard: Tartaglia doesn't really care about allegiances or things like "good" and "evil," even stating that morality itself is second to battle in his mind. Despite fulfilling his orders in Liyue, he shirks his mission to [[spoiler:retrieve the Electro Gnosis after Scaramouche apparently went rogue]], telling the Traveler he's holding out to see what they will do. However, he explains his goal is only to seek out battle, and that having plans unrelated to the Fatui isn’t unique to him, as the other Harbingers certainly have their own agendas.
* WillfullyWeak: He claims that he uses a bow because he is the ''worst'' at it, and he wants to practice with it. He never uses his Electro Delusion as a playable character, either.
* WolfInSheepsClothing: He seems friendly and open at first glance, but he has a bloodthirsty side. According to his official description, under his cheerful and confident appearance lies a deadly swordsman. You can see the "other side" of himself in his pre-release character trailers and eventually within the game itself.
* TheWorfEffect: Non-combat version. The Traveler defeats him at the conclusion of the Liyue Archon Quest, one of the dreaded Harbingers, touted as having both authority and power beyond mortals, and who can even stand up against Archons. Then it's revealed that the Harbingers are ranked by power, and you realize he's the ''weakest'' of the Harbingers.
* WorfHadTheFlu: His Foul Legacy Transformation puts a severe strain on his body, allowing the Traveler to prevail against him just by stalling long enough for him to grow too exhausted to sustain it. He also needs to rest for a good while after using it. During his Story Quest, he collapses against a wall after barely a minute using it. Despite this, Paimon asserts that Tartaglia is ''still'' stronger than the Traveler, even after [[spoiler:they defeated La Signora]], suggesting that this stamina issue is the only reason he lost the first time.
* WorldsStrongestMan: His goal is to become this, and he will do absolutely anything to gain more power to achieve it. His quotes about "conquering the world" similarly refer to defeating the strongest the world has to offer, rather than ruling over Teyvat.
-->"I was born to fight, and as long as I draw breath, there will be no end to my purpose. My limits vanish behind the horizon with every step that I take.
* WorthyOpponent: Joined the Harbingers partly to find a good fight. He does find one in the Traveler, and even after the fight in the Golden House expresses eagerness to go at it again sometime."
* WouldHitAGirl: He won't hesitate to hit either Traveler (Aether or Lumine).
* WrongContextMagic: A power that is "not of this world" fuels his Foul Legacy Transformation, specifically the "land of endless darkness" (the Abyss) that he once treaded in back when he was younger.
[[/folder]]
[[Characters/GenshinImpactTravelerAndPaimon The Traveler (and Paimon)]]\\
'''''Playable Characters'''''\\
[[Sandbox/GenshinImpactAnemo Anemo]] ([[Characters/GenshinImpactWanderer The Wanderer]]) | [[Sandbox/GenshinImpactCryo Cryo]] | [[Sandbox/GenshinImpactDendro Dendro]] ([[Characters/GenshinImpactNahida Nahida]]) | [[Sandbox/GenshinImpactElectro Electro]] ([[Characters/GenshinImpactRaidenShogun Raiden Shogun]]) | [[Sandbox/GenshinImpactGeo Geo]] ([[Characters/GenshinImpactZhongli Zhongli]]) | '''Hydro''' | Pyro\\
'''''The Nations of Teyvat'''''\\
[[Characters/GenshinImpactMondstadt Mondstadt]] ([[Characters/GenshinImpactKnightsOfFavonius Knights of Favonius]] | [[Characters/GenshinImpactFourWinds Four Winds]] | [[Characters/GenshinImpactFischl Fischl]] | [[Characters/GenshinImpactMondstadtHistorical Historical]])\\
[[Characters/GenshinImpactLiyue Liyue]] ([[Characters/GenshinImpactQixing Qixing]] | [[Characters/GenshinImpactAdepti Adepti]] | [[Characters/GenshinImpactLiyueHistorical Historical]])\\
[[Characters/GenshinImpactInazuma Inazuma]] ([[Characters/GenshinImpactTriCommission Tri-Commission]] | [[Characters/GenshinImpactWatatsumi Watatsumi]] | [[Characters/GenshinImpactAratakiGang Arataki Gang]] | [[Characters/GenshinImpactInazumaHistorical Historical]])\\
[[Characters/GenshinImpactSumeru Sumeru]] ([[Characters/GenshinImpactAkademiya Akademiya]] | [[Characters/GenshinImpactAlhaitham Alhaitham]] | [[Characters/GenshinImpactCyno Cyno]] | [[Characters/GenshinImpactKaveh Kaveh]] | [[Characters/GenshinImpactEremites Eremites]] | [[Characters/GenshinImpactSumeruHistorical Historical]])\\
[[Characters/GenshinImpactFontaine Fontaine]]\\
Snezhnaya ([[Characters/GenshinImpactFatui Fatui]] | [[Characters/GenshinImpactHarbingers Harbingers]] | [[Characters/GenshinImpactTartaglia Tartaglia]])\\
''Transnational Organizations:'' [[Characters/GenshinImpactAdventurersGuild Adventurers' Guild]] | [[Characters/GenshinImpactHexenzirkel Hexenzirkel]] | [[Characters/GenshinImpactTreasureHoarders Treasure Hoarders]]\\
'''''Gods'''''\\
[[Characters/GenshinImpactArchons Archons]] | [[Characters/GenshinImpactCelestia Celestia]] | [[Characters/GenshinImpactOtherGods Others]]\\
'''''Others'''''\\
[[Characters/GenshinImpactKhaenriah Khaenri'ah]] ([[Characters/GenshinImpactAbyssOrder Abyss Order]]) | [[Characters/GenshinImpactPrehistoricalCharacters Prehistorical]] | [[Characters/GenshinImpactHilichurls Hilichurls]] | [[Characters/GenshinImpactMonsters Monsters]]\\
]] -]]]
! Hydro
[[foldercontrol]]
->'''Archon''': Focalors\\
'''Elemental Reactions:''' Bloom, Crystalize, Electro-Charged, Freeze, Swirl, Vaporize\\
'''Gnosis:''' Unknown\\
'''Strong Against:''' Pyro\\
'''Weak Against:''' Electro, Dendro\\\
----
[[folder:In General]]
%%* ElementalMotifs: Justice
* MakingASplash: Hydro enables control over the element of Water in Teyvat.
* SimpleButAwesome: Hydro ties with Anemo for being the best element in Genshin Impact due to the sheer amount of powerful reactions they can initiate once the target is ''wet''.
[[/folder]]
!! Mondstadt
[[folder:Barbara]]
[[/folder]]
[[folder:Mona Megistus]]
[[/folder]]
!! Liyue
[[folder:Xingqiu]]
[[/folder]]
[[folder:Yelan]]
[[/folder]]
!! Inazuma
[[folder:Kamisato Ayato]]
[[/folder]]
[[folder:Sangonomiya Kokomi]]
[[/folder]]
!! Sumeru
[[folder:Candace]]
[[/folder]]
[[folder:Nilou]]
[[/folder]]
!! Snezhaya
[[folder:Tartaglia]]
* AboveGoodAndEvil: Tartaglia states that things like "good" and "evil" mean very little to him, and he has no real care for duty or allegiance, either. For him, the most important thing in the world is the rush of battle.
* TheAce: Despite his youth, characters consider him an absolute menace on the battlefield due to his skills, and as a Harbinger he naturally commands a great deal of respect within the Fatui.
* ActuallyPrettyFunny: Tartaglia laughs his heart out when he heard that the Traveler, Paimon, and Zhongli fell for the whole "Cocogoat" request of Qiqi. Even after that scene is over, he admits that it has been a long time since he laughed like that.
* AffablyEvil: While he works for the Fatui and their interests, he is a pleasant person otherwise. He sees no problem whatsoever with hanging out with and in multiple ways helping the Traveler and Zhongli while performing his orders to find the Geo Gnosis. Similarly, in his first boss fight where he believes the Traveler has stolen the Gnosis, he notes he is not going to kill them. Afterwards, he genuinely considers himself and the Traveler to be friends. Though it also becomes clear he has a very BloodKnight view of true friendship, and he continues following through on his orders and [[spoiler:summons a fallen god to threaten Liyue in an attempt to draw Morax out]], despite his distaste for it.
* AnimalMotifs: The narwhal, as his constellation, refers to one, and in the battle against him he can [[SummonMagic summon a huge narwhal water elemental]] to attack you.
* AntiVillain: Yes, he is a BloodKnight and one of the Harbingers, but he's also very friendly towards the Traveler and Zhongli, and displays [[EvenEvilHasLovedOnes a love for his family]]. It's even implied by Teucer that if he had a chance, he'd pull a HeelFaceTurn and join the Traveler instead.
* ArcNumber: Eleven. He's the eleventh of the Harbingers, he was released on November 11 (which can be abbreviated as 11/11), and his rerun banner was the eleventh character wish banner overall.
* AwesomeButTemporary: His biggest NecessaryDrawback is that he can't stay in his melee stance for too long, or he will be stuck with his bow that deals relatively low damage for as long as 45 seconds.
* TheBabyOfTheBunch: He's the youngest and newest of the Harbingers but is also one of the most dangerous.
* BadassCape:
** In his [[OneWingedAngel Foul Legacy Transformation]], he gains a cape made out of Electro particles which looks like the mantle of a starry sky.
** His default outfit includes a half-cape that looks like a mix between this and ScarfOfAsskicking.
* BeneathTheMask: Under his mask of a cheerful, confident guy, he is a thinly veiled WolfInSheepsClothing that has a keen sense of bloodlust, working with the Fatui for the thrill of fighting strong opponents.
* BenevolentBoss: He's noted to be cordial and fair with his subordinates, and even during a mock battle with recruits, he makes sure to not go too far. This is in contrast with {{Bad Boss}}es like Scaramouche and Signora, who will verbally abuse and even kill their underlings at the drop of a hat.
* BifurcatedWeapon: In his melee stance, Tartaglia summons a pair of Hydro-enchanted blades, which he can combine into a double-ended spear for ''Light of Obliteration''. Though they look like [[ElementalWeapon weapons]] [[ShapingYourAttacks made entirely out of water]], they are noted to be physical weapons, as he can throw it as a spear and it remains intact for a prolonged amount of time separate from him, and one of the drops from his weekly boss fight is the "Shard of Foul Legacy", which is explicitly noted to be a broken shard of the weapon Childe uses.
* BigBrotherInstinct: Fiercely protective of his younger siblings, to the point that he used his Foul Legacy Transformation even while still injured, just so he could keep Teucer both safe and happy at once.
* BigDamnHeroes: He saves the Traveler and Paimon from the Millelith following Rex Lapis's apparent death. This helps him gain their trust for his plans, even if not by much.
* BilingualBonus: In the Japanese trailer for "Letter to Snezhnaya", he says "Dear Sister" in Russian.
* BloodKnight:
** At his core, he just wants to fight, grow stronger, and then fight even greater fights. It is telling he only starts to truly consider you a friend and comrade after you have a no-holds-barred duel with him. And that his later weekly boss fights have him commenting on how happy he is to have a chance to cut loose with you again.
** His character story tells that, after that unexpected encounter when he was fourteen that changed him, he became a dangerous, ill-tempered troublemaker who stirred up strife wherever he went. His father had to put him into the Fatui to tame him, but he managed to beat multiple well-trained troopers despite his youth. Pulcinella saw his immense potential, and eventually, he worked up the ranks until he became a Harbinger himself.
--->"Good and evil, right and wrong, duty and destiny... are these things really so important? Are they really more appealing than the euphoria of battle and close combat?"
* BlueAndOrangeMorality: Tartaglia is a BloodKnight to such an insane degree that his desire to seek out challenging battles can override any sense of duty he might have. He at one point admits that he considers himself AboveGoodAndEvil, and that seeking out strong opponents to grow stronger himself is what he mainly lives for. He later states directly that he doesn't care about morality, allegiance or duty, all of that takes a back seat to battle.
* BowAndSwordInAccord: His main weapons are bows, but his Elemental Skill has him summon [[DualWielding a pair of short Hydro swords]]. This gives him alternative melee moves with Hydro effects, allowing him to fight in close combat, unlike other archers.
* BowsAndErrors: Justified. When he said he's terrible at the bow, he means it. His stance is very stiff and hunched over, he doesn't pull on the bowstring all the way, and he doesn't even hold the bow properly. Not to mention him ending his combo by outright ''throwing'' an arrow. Compared to the other archers, his form is extremely sloppy, making it a wonder he could even strike his targets at all.
* BreadEggsMilkSquick: He explains his goal is to get stronger, and he will do whatever it takes to achieve that, using Visions, Delusions or even heretical teachings from the Abyss.
* BringIt: One of his Elemental Skill quotes has him say "Bring it on!" when the skill is activated from a standstill. Ironically, he says this when switching from his stronger melee stance to his weaker ranged stance, instead of the other way around.
* TheBrute: Tartaglia is valued by the other Harbingers moreso for his raw power than his tactical prowess. [[spoiler:He was sent to Liyue to cause as much chaos as possible and make him summon Osial so La Signora can convince Zhongli to surrender his gnosis as part of their contract, and was never intended to succeed with his own plan]].
* BunnyEarsLawyer: His overly-cheerful attitude towards battle and philosophy on it comes across as strange to just about everyone he meets, his dislike of scheming makes him something of an outlier among the Fatui, and he even [[spoiler:''slacks off on a mission'' just so he can see what the Traveler will do]]. That said, he's crazy powerful to the point that Paimon outright calls him the strongest on the team (a team which includes [[TheHero the Traveler]]) during the "Labyrinth Warrior" event.
* CastFromHitpoints: His Foul Legacy Transformation puts a tremendous strain on his body. The fight in the Golden House ends when he just cannot sustain it any longer and using it again in the Dottore's Ruin Guard laboratory while still recovering, even just for 10 seconds, takes so much out of him that he would be helpless to stop the Traveler if they wanted to kill him at that point.
* CharClone: He wears a mask, he is TheAce in combat, he is associated with red, he has a complicated relationship with the other villains, and he is a rival of sorts to the Traveler (at least, according to him).
* ChildSoldier: According to his character story, he has been on the battlefield since he was fourteen, and the text implies that he was already an expert in weapons, so he may have trained since he was younger.
* CloudcuckoolandersMinder: Acts as this to an extent to Zhongli, especially when the topic is about money.
* CoolBigBro: He brings back various miscellaneous items like defeated Ruin Guards for his younger siblings to use as toys, and once caught an enormous aquatic creature for them to eat. And from what is seen in his story, it's not an act either: he's genuinely happy to see Teucer in Liyue before doing a DoubleTake and asking him how he even got there from Snezhnaya, goes to a great deal of trouble just to keep Teucer happy (and [[LockedOutOfTheLoop in the dark about the shady nature of his work]]), and unleashes his Foul Legacy Transformation when on the verge of being overwhelmed by Ruin Guards even though he's still recovering from the last time he used it, just so he'd have time to clean them up and place them in innocuous-seeming positions around the room without Teucer having to see him destroying "Mr Cyclops".
* CooldownManipulation: Tartaglia's sixth Constellation upgrade, ''Havoc: Annihilation'', resets the cooldown time of ''Foul Legacy: Raging Tide'' once he returns to ranged mode after unleashing ''Light of Obliteration''.
* CoolMask: He has a menacing-looking red mask that he normally wears to the side of his head. When he activates his Delusion power, he wears the mask properly, and in his Foul Legacy Transformation, his mask grows to cover his whole face and is topped with a single shining circle at the center.
* ComicallyMissingThePoint: In the web series, in an effort to get Tartaglia to understand why people are getting angry, Lumine asks him to imagine if someone agreed to fight him and then stood him up. He responded with confusion, saying that he won't be lying down before a fight.
* CordonBleughChef: His special version of Calla Lily Seafood Soup, 'A Prize Catch' is described as 'looks like a trapped beast floundering in an ocean of blood, its death throes an inaudible scream.' But he explains it's just something he fished, plus some products from his homeland. [[MysteryMeat Whatever they are]].
* CulturedBadass: In-between his work as a Fatui Harbinger and search for stronger opponents, he attends public performances and sometimes gets on stage himself.
* CuteAndPsycho: He presents as a friendly, open man who is easy on the eyes, but this hides an AxCrazy BloodKnight side to him that comes out whenever he is about to do battle.
* CutscenePowerToTheMax: Regardless of how well the player does against his Foul Legacy Transformation, the protagonist is just barely holding him off in the cutscene following. In the cutscenes, he demonstrates that he can transform into a trail of water which he uses to escape after freeing Osial. He also thrashes three Ruin Guards using this power in a time that's flat-out impossible in-game.
* DangerousForbiddenTechnique: His [[OneWingedAngel "Foul Legacy Transformation,"]] using a Delusion in tandem with his Vision (alongside a power that is "not from this world"), takes quite a toll on his body. He is reluctant to use it again for days after his battle with you, and when he must activate it to finish off a large group of ruin guards, he cannot fight at all, only managing to limp away when you take pity on him instead of taking the opportunity to kill him.
* DarkAndTroubledPast: When he was fourteen, Ajax accidentally fell into [[EldritchLocation the Abyss]] and was trapped there for three months surrounded by otherworldly beasts and monsters who could have easily killed him. Under the tutelage of Skirk, a swordswoman within the Abyss, he learned to fight tooth and nail and even use the Abyss's power for his own purposes to survive, and grew a violent streak as a result.
* DeadlyLunge: In his boss battle's second phase, one of his attacks is him rushing towards your character multiple times with his electrified polearm.
* DeathFromAbove: The ranged form of ''Havoc: Obliteration'' has him fire a water arrow upward, which then falls and deals high damage in an area, as well as marking any enemy hit with Riptide. In his boss fight, he can do a series of the same move, and later, he can cover the entire arena with his arrows' blasts.
* {{Determinator}}: In the Domain, Child constantly fights numerous monsters without end, yet only comments that he enjoys it and there's not so much as a scratch on him. He later explains he can survive it all due to his time in the Abyss, and states his goal is to always get stronger, through his determination and will power always improving forever, while those who want an end will find it.
* DifficultButAwesome: With his StanceSystem and Riptide debuff, Tartaglia is among the most technically demanding characters in the game. His primary form of damage-dealing comes from changing to his melee stance, whose power boost and constant Hydro application are offset with a cooldown time that grows in proportion to the duration of the stance (to a maximum of ''45 seconds'' unless he manually switches back to ranged mode). This can be a severe problem since he will be stuck with his (admittedly) mediocre archery longer than he'd want, limited to charged shots until ''Foul Legacy: Raging Tide'' is ready again. In addition, he has two variants of ''Havoc: Obliteration'', with the ranged form applying Riptide to all enemies in range and the melee form dealing strong burst damage (with additional damage on enemies marked with Riptide), forcing the player to choose which one to use. Once you master these, however, Tartaglia will be capable of easily drowning his enemies in a storm of arrows and blades.
* DoesThisRemindYouOfAnything:
** Before your weekly boss battles with him, he will say the following quote, which is dripping with AccidentalInnuendo:
--->"This opportunity is quite hard to come by. Well then. Amuse me. Surrender is a valid option. I promise I'll be gentle."
** The Chinese and Japanese versions are even more explicit.
--->"This opportunity is pretty hard to come by, so please let me indulge. Surrender is still an option, I will treat you extremely gently as the defeated enemy general under my control."
* DoubleWeapon: Certain moves in his melee stances has him combine his swords into a polearm with blades in each end. In his Foul Legacy Transformation, he wields a more ornate version of said weapon.
* DoWellButNotPerfect: [[spoiler: Ultimately the reason he was kept in the dark about the deal between the Geo and Cryo Archons. According to the terms, the Tsaritsa needed Tartaglia to fail, but Zhongli still needed a credible threat with which he could judge Liyue's readiness. Not being informed about the deal meant that Tartaglia would put all his effort into trying to take the Geo Archon's Gnosis. He's understandably pissed when he learns that he was never intended to succeed.]]
* DubNameChange: "Childe" is derived from "Gongzì" in Chinese and "Koushi" in Japanese, both of which refer to a child of a rich family. The French subtitles are a strange case, as they only refer to him as "Tartaglia" and never so much as mention his other name.
* DubPersonalityChange:
** The largest departures from his canon Chinese characterization are in the Japanese and Korean dubs, the former in which he is the most light-hearted and playful of all his depictions while in the latter, he goes the exact ''opposite'' direction and is by far the most serious. To compare, let us take how he reacts to Zhongli tricking him. In the former, he simply laughs it off and looks forward to fighting Zhongli one day, while in the latter he is ''very'' displeased. In English, he is at the very least mildly annoyed, while in Chinese he is a bit more upset but not as much as in Korean.
** {{Downplayed}}, but his first greeting in English to the female Traveler is a cocky and borderline flirty "Hey girlie, hold still," while his equivalent in other languages merely says "Miss, careful, don't move."
* DubPronunciationChange: The English dub pronounces his title with the "g" sound ("tar-tog-lya"), but in the original Italian it's supposed to be silent ("tar-tah-lya"). The other languages get the pronunciation right.
* DullEyesOfUnhappiness: [[https://static.tvtropes.org/pmwiki/pub/images/e65cbc8c_c224_4899_a9cd_76f986f32235.png His eyes lack a shine to them]], in contrast to the other characters, to illustrate his [[BloodKnight general disinterest with most things other than fighting]] and ZenSurvivor TrainingFromHell backstory. One of the few times that they actually ''do'' get a shine in them is when he's talking about his siblings.
* ElementalEyeColours: His eyes are a deep blue, as befitting his Hydro vision.
* EvenEvilHasLovedOnes: He loves his family and goes to extreme lengths not only to protect but also to avoid becoming a BrokenPedestal to his youngest brother Teucer. Indeed, he places his family above his own life, as shown by the fact that he was willing to use his CastFromHitPoints move while in danger of dying from it just to keep his youngest brother from seeing his true nature.
* EveryoneHasStandards: As much of a morally dubious BloodKnight as he is, Tartaglia never approves of being cruel for its own sake, and takes loyalty very seriously.
** He has no love for his fellow Harbingers, particularly La Signora and especially Arlecchino: the former, as he implicitly opposed her habit of executing her recruits just to show off her power, but especially after learning that [[spoiler:she made a fool of him by ordering him to unseal Osial in an an attempt to draw Morax out and steal his Geo Gnosis, even as she merely had Morax/Zhongli negotiate away the Gnosis]]; the latter, due to her habit of betraying others, even suspecting that she may one day turn on the Tsaritsa were she to gain someting from it.
** He expresses regret at [[spoiler:summoning Osial]] because he doesn't like putting weak people in danger.
** For all of his BloodKnight tendencies, he is against picking a fight in the middle of a funeral, which is notable when you remember that the funeral is for that of [[spoiler:the aforementioned La Signora]].
* EvilCostumeSwitch: His outfit while using his Delusion and his Foul Legacy Transformation has a darker color palette than his largely gray and white standard attire.
* EvilCounterpart: To Thoma. Both are visually similar young men who meet the Traveler right after they arrive in a new region and serve as a friendly guide providing aid through their connection to a larger organization. However, Tartaglia's friendliness was a mask to hide his bloodthirsty side and works with the Fatui to undermine Liyue, whereas Thoma is a genuinely friendly man who works with the Yashiro Commission for the betterment of Inazuma. Both men also share a FireWaterJuxtaposition, with Tartaglia being the Water to Thoma's Fire.
* ExposedToTheElements: Averted. During the "A Winter Night's Lazzo" trailer, unlike some of his fellow Harbingers, Tartaglia is dressed appropriately for the bone-chilling cold of Snezhnaya under his cloak, with a thick scarf and heavy clothes.
* FalseFriend: Downplayed for both his friendship with the Traveler and Zhongli. While he was using both to further goals of the Fatui, he makes it clear that he has no personal issues with either of them and still considers the Traveler [[FriendlyEnemy a friend after everything]]. In Zhongli’s case, he sees him as a WorthyOpponent at the end and both characters' dialogues about each other say that they either still spend time together or plan to further down the line.
* FashionableAsymmetry: His shirt is slightly open on his right side, his ScarfOfAsskicking hangs off his left shoulder, he wears a single pauldron on his left shoulder, and he wears one earring on his left ear.
* FieryRedhead: He has orange hair and is brash and spirited, particularly during a good fight.
* {{Foreshadowing}}: [[spoiler:The monstrous transformation he undergoes when drawing on the power of the Abyss is a big hint as to the circumstances of [[WasOnceAMan the Abyss Order]]]].
* {{Forgiveness}}: While never outright ''stated'', it does run in the background of his relationship with the Traveler. The Traveler can initially chose dialogue options expressing hostility after [[spoiler:Tartaglia sics Osial on Liyue to lure out Rex Lapis out]], and even without them is justifiably wary. However, his Story Quest sees them [[DefrostingIceQueen gradually warming up to him]], searching for him after he uses Foul Legacy to protect Teucer, and telling him to "go in peace." During the "Labyrinth Warriors" event, the Traveler is worried for him when he got trapped in the Mystic Onmyou Chamber. Finally, when talking to him in the Serenitea Pot, the Traveler expresses excitement at going on a trip with him. This is particularly noticeable in contrast with the Traveler's almost murderous attitude towards the other Fatui Harbingers, Signora and Scaramouche.
* FriendToAllChildren: It's shown in several events that he's great with kids, probably due to his big brother nature.
** Xinyan quickly latches onto him as a "big brother" in the "Labyrinth Warrior" event.
** In the "Stone Harbor" event, one of his random encounters is with a little girl who wants to know if fairy tales are real; if the Traveler allows him to handle it, his words to her leave her glowing with joy.
** In the "Outside the Canvas, Inside the Lens" event, he rescued a child from a camp of monsters they were about to walk into, which caused him to strike up a friendship with the similarly good-with-kids Yoimiya and her group.
* FriendlyEnemy:
** Despite being a part of a villainous organization, his bloodlust, and the fact that he was using the Traveler all along to further the goals of the Fatui, Tartaglia doesn't appear to have anything against the Traveler personally and still considers them a friend after they defeat him, to the point Teucer can identify them solely from a letter he wrote back to them that described the Traveler solely in friendly terms. He admits it might be one-sided on his end, but dialogue options allow them to return the sentiment; other things like the "Labyrinth Warriors" event and the Serenitea Pot indicate they eventually do. Also, if he joins the Traveler's party by pulling for him during his Event Wish banner and their Friendship Level is high enough, he will even give the Traveler some info about the rest of the Harbingers.
** Also with Zhongli, in that their voice lines imply that they still spend time together despite everything.
* FromNobodyToNightmare: He was originally a normal, shy boy who simply wanted to go on an adventure until he fell into the Abyss and spent three months fighting for his life. He emerged a very different person, having developed a sheer bloodlust. His father sent him to the Fatui in hopes of taming this new side of him, which only had the opposite effect to the point that he quickly rose up its ranks and became a Harbinger.
* GameplayAndStorySegregation:
** You can pull him from the gacha and bring him along on your travels even before completing the main Liyue storyline in Chapter 1 Act 3 of the Archon Quests, where he is explicitly still your enemy acting on the orders of the Fatui to find Morax's gnosis, to the point where you must have a BossFight with him over it. You can also bring the playable Tartaglia into the Tartaglia BossFight, making there be two Tartaglias with no explanation.
** Fatui enemies in the overworld will attack him on sight just like any other party member, and you need their insignias to ascend him, encouraging you to beat them up with him. If you somehow manage to aggro enemies from a different faction, [[GangUpOnTheHuman the Fatui will ignore them in favor of attacking you.]]
* GeniusBruiser: Lest one mistake him for just a bloodthirsty brute, remember that Tartaglia did carry out a plot to steal the Geo Gnosis that would have succeeded had [[spoiler:his own side not set him up to fail]]. He also makes very accurate inferences about Shiki Taishou and correctly analyzes the situation outside the Mystic Onmyou Chamber, based on a few sentences from the Traveler and Xinyan, in the "Labyrinth Warrior" event.
* GigglingVillain: During his boss battle, he [[https://www.youtube.com/watch?v=0QQa0tYsftE laughs cheerfully]] as he tosses attack after attack at you, matching [[BloodKnight his]] [[CuteAndPsycho personality]]. This is especially prominent in the Japanese dub, resulting in [[https://www.youtube.com/watch?v=6hcGcYYbDcE compilations being made of his giggles]].
* GivenNameReveal: His third character story reveals his real name to be Ajax.
* GlassCannon:
** Out of all the weekly bosses, Childe has the lowest overall HP, and can easily be taken down in all three of his phases. The reverse also applies, as he hits ''extremely'' hard and fast all while heavily staggering your characters and can easily kill your party in a few hits if you can't dodge his attacks.
** Downplayed as a playable character; he is still a powerful hard-hitting Hydro DPS fighter, but his bare HP and Defense stats are on par with those of melee characters than that of an archer.
* GoKartingWithBowser:
** Being a Fatuus won't stop him from joining you on your travels if you pull him. He even has a line where he muses that his fellow Harbingers must know of his 'dealings' with you and that he would love to see the looks on their faces.
** Taken almost to the extreme with you being able to invite him over to your Serenitea Pot (aka your ''house''). If you do, he brings up a bunch of other ideas for casual events (fishing, drinking, and sparring) for the pair of you to do.
** As of version 3.7, Tartaglia becomes a new addition to the pool of character cards in Genius Invocation [=TCG=], which also means he can come over to The Cat's Tail to participate in friendly card games.
* GoneHorriblyWrong: After three months stranded in the Abyss as a fourteen-year-old, Ajax emerged a battle-hungry troublemaker. Not knowing what to do, his father sent him to the Fatui, hoping they could discipline him. Instead, this merely allowed him to express his violent urges on the battlefield, embracing his bloodlust such that he quickly rose up its ranks until he became one of the eleven highest-ranking officers of the Fatui, answering to no one but the Cryo Archon herself.
* GuideDangIt: His boss fight has a unique hidden mechanic where he counterattacks when hit with Hydro in the first phase, Electro in the second, or both in the third. This is difficult to notice when fighting him since the counterattacks are no different from his normal attacks, so you will not notice it unless you fight him multiple times with teams of different elements. Simply avoiding those trigger elements makes the fight significantly quicker and easier.
* HatedByAll: By the end of the Liyue Archon Quest, [[spoiler:Tartaglia role in the Osial crisis has made him a pariah, to the point that the Snezhnayan diplomatic corps would have gladly left him to the Qixing's mercy as a peace offering but for his lofty position as Harbinger]].
* HeelFaceTurn:
** According to Teucer, there's a part of Tartaglia that ''wants'' to leave the Fatui. He genuinely likes the Traveler, doesn't get along with the rest of the Harbingers, and just wants to go wherever he'll get into the most fights, all of which gives him plenty motivation to do so. However, he has too much respect for the Tsaritsa to just turn his back on her on a whim.
** During he "Labyrinth Warriors" event, he shirks off his mission to deal with [[spoiler:Scaramouche apparently going rogue with the Electro Gnosis in tow]], instead opting to continue observing the Traveler, as well as find more excuses to fight some more.
* HiddenDepths:
** For all his bloodlust, Tartaglia is genuinely devoted to his family, to the point where he willingly bore the strain of his Foul Legacy Transformation once again even while still recovering from his last usage just so Teucer would not have to watch him destroy his beloved "Mr. Cyclops." When the Traveler finds him in the aftermath, Tartaglia, clearly exhausted and in massive pain, muses about how easily one can break childhood dreams, and asserts that he needs to protect them at any cost.
** One of his hobbies? ''Fishing'', as in sitting still for long periods of time and waiting for a catch. It's not the sort of activity one would expect a BloodKnight like him to enjoy, but he considers it a good form of meditation. He also states that he believes the patience and decisiveness required for fishing to be quite similar to what is required for combat.
** Both the "Stone Harbor" event and his Story dialogue reveal that he frequently attends public performances, and sometimes even gets on the stage himself. It's also implied the type of these performances are dancing of some sort, as Paimon mentions he's skilled at that.
** Despite being easily strung along by La Signora and Zhongli, Tartaglia is actually good at deduction, quickly figuring out the state of things outside the Mystic Onmyou Chamber are putting pressure on the Traveler, which has them on edge.
* HouseHusband: Well, house ''brother'' in this case, but the story says that he is good at cooking and cleaning, due to having three younger siblings.
* HumanWeapon: Reconstructed. Tartaglia sees nothing wrong with being used as a weapon, and when Shiki Taishou believes he is a discarded weapon, the Harbinger tells about how he fell through the Abyss and used it to become stronger. He calls himself a weapon and says his goal isn't victory, but improvement, and that he will forever fight and continue to strengthen himself as one while those who wish for an end will find one.
* IAmNotLeftHanded: ''Foul Legacy: Raging Tide'' allows him to switch from his bow to dual swords, which he is more proficient in. And in his boss fight, he reveals that he has more powers at his disposal than just a Hydro Vision, thanks to his Delusion and apparent knowledge of Abyss sorcery.
* IHaveManyNames: Has three, with the third one revealed [[RelationshipValues when his friendship with the player raises high enough]]. "Tartaglia" is his title as a Harbinger; "Childe" is an alias he used throughout the Liyue Archon Quest; and "Ajax" is his birth name.
* IronicName: Tartaglia means "stutterer" in Italian, and he has quite the way with words. However, his name is a reference to a stock character from CommediaDellArte who does stutter, but whose role and personality in the story would change from play to play depending on what the writers needed, like how the game's Tartaglia can swap from bow to melee to fill different niches, and also wore a mask.
* KlingonPromotion: A voiceline from Zhongli implies that Tartaglia has advanced through the Fatui by killing his rivals, and when his position is threatened after the events of the Liyue Archon Quest, he will be violently dealing with those who are aiming for his seat among the Harbingers.
* LateArrivalSpoiler: It is possible to pull Tartaglia before reaching the Liyue Archon Quest and thus have his nature as a Harbinger spoiled by his character profile.
* LegFocus: The cutscene leading up to his boss fight's third phase has the camera pan up his legs and rear after Tartaglia resorts to his Foul Legacy transformation.
* {{Leitmotif}}: He receives one in his debut trailer, A Letter to Snezhnaya, titled "[[https://www.youtube.com/watch?v=AXjnVSZozYI Letter from Ajax]]".
* ALighterShadeOfBlack: He's willing to do some horrible things because of his addiction to battle, but it also makes him a more straightforward antagonist; since he's constantly on the search for a good fight, his thinking often centers around getting an epic showdown or two, especially when he has a WorthyOpponent in his sights. Picking on the weak [[NobleDemon is normally beneath him]], and he's genuinely apologetic when he had to when he [[spoiler:unsealed Osial, threatening to destroy Liyue Harbor in an attempt to draw Morax out of hiding]]. Contrast with the cruelty of La Signora and Scaramouche, [[spoiler:where the their plots in Inazuma destroyed the lives and livelihoods of many, unleashed disasters that rendered two whole islands nearly uninhabitable, and plunged the country into a bloody civil war that they took further advantage of by supplying the Resistance with life-stealing Delusions]]. And then there's the terrifying sociopathy of Dottore, [[spoiler:who pandered to the Akademiya's desperation over the passing of Rukkhadevata, the previous Dendro Archon, and their disdain for her less-academically-inclined successor Kusanali, to encourage them into turning Scaramouche into their new God of Wisdom, even as he sees all this as little more than an experiment to observe, to say nothing of how he drove Scaramouche insane centuries ago by murdering his loved ones and then lying to him that they betrayed him]].
* LockedOutOfTheLoop: Suffice to say, his fellow Harbingers don't seem to be forthcoming with important details about his missions.
** He is completely unaware of [[spoiler:Zhongli and Signora's backroom deals, where the former will have to give up his Gnosis. He is annoyed about being an UnwittingPawn for their plan when the dust settles]].
** Likewise, [[spoiler:he is dispatched to Inazuma with orders to hunt down Scaramouche and retrieve the stolen Electro Gnosis. Both were already in Fatui custody in Sumeru, being experimented on by Dottore as part of his project to create a manmade god. Whether Dottore was acting alone or with the knowledge of Pierro and the Tsarista is unknown, but either way Tartaglia's mission to Inazuma was a wild-goose chase that ended as soon as Dottore declared his experiment a failure]].
* MakingASplash: Has a Hydro vision. Unlike other characters, it is not the only trick up his sleeve (at least in-story).
* ManaDrain: His second Constellation upgrade, ''Foul Legacy: Understream'', restores 4 Energy for Tartaglia whenever enemies afflicted with Riptide are defeated.
* ManipulativeBastard: He spends the Liyue Archon Quest deceiving the Traveler into aiding him and using them to earn the trust and connections he, as a Harbinger, never could. In addition to dropping hints that the Qixing might be behind Rex Lapis's death, he also has the Traveler followed and eavesdropped on to learn where the Qixing had hidden the Exuvia.
* MarkedToDie:
** As a playable character, Tartaglia's fighting style revolves around inflicting Riptide marks, either through charged shots, ''Riptide Burst'', or ''Flash of Havoc'', which last ten seconds and trigger different attacks that deal wide-ranging Hydro damage: ''Riptide Flash'' with fully-charged shots, which periodically deals damage (with at least 0.7-second intervals); ''Riptide Burst'' should the marked enemy fall, which triggers an explosion that also inflicts Riptide on surrounding enemies; ''Riptide Slash'' when attacked by Tartaglia in melee mode (with at least 1.5-second intervals); or ''Riptide Blast'' through ''Light of Obliteration'', which clears the mark in exchange for heightened damage. Both his ascension passives also prioritize in enhancing Riptide--that for his first, ''Never Ending'', extends its duration to eighteen seconds, while that for his fourth, ''Sword of Torrents'', allows him to inflict Riptide whenever his normal or charged attacks in melee mode score critical hits.
** As a boss, Tartaglia's easy-to-avoid attacks apply Riptide on hit and he only uses strong and difficult-to-avoid attacks when the player is marked by Riptide. To remove the Riptide, the player needs to walk to the border of the arena, which temporarily inflicts Pyro.
* MechanicallyUnusualFighter: Tartaglia is the first character whose field passive is directly combat-related, and as of v3.4, the only one restricted to that (at least Kokomi has a second field passive that is non-combat-related).
* MirrorCharacter: To Scaramouche/Wanderer, the other playable male Harbinger.
** Despite being a BloodKnight, Tartaglia is [[AffablyEvil genuinely friendly]] towards the Traveler, speaking highly of them on several occasions. Scaramouche, on the other hand, is very vitriolic, even after his HazyFeelTurn.
** Tartaglia has the decency to at least feel bad about innocents getting hurt in his plan to lure out Morax, while Scaramouche displays a LackOfEmpathy for humanity in general.
** Tartaglia is a BenevolentBoss to his subordinates, whereas Scaramouche is [[BadBoss the opposite]].
** Tartaglia has an UndyingLoyalty to the Tsaritsa, while Scaramouche is a WildCard with no real allegiance to anyone other than himself (even having joined the Fatui [[ItAmusedMe out of amusement]]).
** Tartaglia has a family back home who he loves dearly, while Scaramouche is angry at Ei for seemingly abandoning him.
** As of v3.4, Tartaglia is still a Harbinger, while Scaramouche has deserted them.
* MoralityPet: His family, particularly his little brother Teucer. Tartaglia does his best to [[LockedOutOfTheLoop keep Teucer out of learning the shadier nature of his work]] by passing himself up as a toy salesman. When Teucer visits him during his Story Quest, Childe often must moderate his behavior so Teucer does not see him do anything unsavory.
* MultiMeleeMaster: His melee stance shows he is very proficient with knives and polearms.
* MySpeciesDothProtestTooMuch: According to his entry in the Collected Miscellany, he is the only Harbinger to relish a head-on fight. According to his character story, this tendency leads the other Harbingers to [[ReassignedToAntarctica put him in missions far away from Snezhnaya]] to avoid fallout.
* MythicalMotifs: Two of them, associated with Myth/ClassicalMythology:
** His real name is Ajax, named after Ajax the Great, who also had a brother named Teucer.
** His elemental powers are Water and Electricity, both of which are associated with Poseidon, who was the god of storms. One of his attacks as a boss involves a giant whale made of water coming out.
* NecessaryDrawback: Tartaglia's Elemental Talents have some of the highest damage multipliers in the game, and Riptide allows him to wipe out hordes of enemies singhlehandedly. However, he's saddled with a massive cooldown as drawback to ensure he won't be a game-breaker. It's telling that unlike other characters, ''none'' of his Constellations directly upgrade his damage, but plenty that affect said cooldown.
* NeverMyFault:
** During his Story Quest, if the Traveler expresses anger towards him over the events of the Liyue Archon Quest, Tartaglia brushes them off, saying that [[spoiler:he was just a pawn in those events]]. This ignores that, while he was [[spoiler:kept in the dark about Zhongli and Signora's deal]], he had already put into process his plan to manipulate the Traveler and [[spoiler:unleash Osial]] without objection. In particular, he had been planning to [[spoiler:free Osial long before any deception occurred, as he had already been producing copies of the Sigil of Permission before Rex Lapis' supposed death]].
** In a separate case of DubPersonalityChange, the line is more understandable in Chinese, where he says that both the Traveler and himself were pawns in the greater scheme of things, and as he would rather leave the actual battle to the ones actually playing the game, he hoped it wouldn't affect them being friendly still.
* NiceMeanAndInBetween: The In-Between of the three bosses-turned-playable-characters. He's not vitriolic and contemptuous of others like Scaramouche/Wanderer, but he's ''far'' too much of a BloodKnight to be as nice as Ei.
* NiceJobFixingItVillain: Getting the Traveler to set the Qixing and the adepti against one another means that all the needed players are already on the scene [[spoiler:when Osial breaks free, which gives Liyue the best shot possible at defeating the ancient god and passing its Archon's final test]].
* NobleDemon: Despite his [[BlueAndOrangeMorality bizarre morality]], Tartaglia has several streaks of integrity that make him stand out from the rest of the Fatui. He never breaks his word, doesn't like endangering innocents or the weak, strongly believes in protecting the innocence of children, and makes it clear to the Traveler that he respects them too much to attack them while their guard is down. This trait is also carried in his boss battle, he won't start attacking unless the player starts moving.
* NotInThisForYourRevolution: He does not care much for the Tsaritsa's plans, and mostly respects her for her strength and the fact she gives him ample chances to fight (though he does admit he admires her as a person, describing her as a gentle soul who had to harden herself). In a bit of GameplayAndStoryIntegration, his lines make it clear the Traveler could get him to betray the Fatui with the promise of more duels together and the fights the Traveler gets into over their journey through Teyvat.
-->"I'm not someone who cares for allegiance and affiliation. Good and evil, right and wrong, duty and destiny... are these things really so important? Are they really more appealing than the euphoria of battle and close combat?"
* OddFriendship:
** With Zhongli. Promotional material treats them as a pair, and they are very friendly toward each other despite their differing personalities. Tartaglia tends to [[CloudcuckoolandersMinder keep Zhongli's spendthrift tendencies in check]] if he is not outright supplying him with Mora, while Zhongli is aware of but otherwise tolerant of Tartaglia's bloodlust, despite knowing that Tartaglia kills those who oppose him. It's implied that even after TheReveal that [[spoiler:Zhongli is Rex Lapis and had been manipulating Tartaglia the whole time]], they are still on friendly terms and occasionally go out for drinks.
** During the "Labyrinth Warriors" event, he develops one with Xinyan.
** Apparently he's ''still'' hanging around Inazuma as of v3.4, as the player can find him playing a game with Yoimiya and her friends, [[TheComicallySerious though he doesn't realize that it's one.]]
* OhCrap: His happiness at seeing his younger brother Teucer again in Liyue very quickly changes to the horror that he came there from Snezhnaya, especially when ending up separated from him in Dottore's Ruin Guard laboratory.
* OneManArmy: He spends days in the Domain in the "Labyrinth Warrior" event all by himself, fighting hordes of enemies, and not only survives but ''thrives''. When Xinyan exclaims he looks like he's been in a war, he just laughs and says he lost track of how many battles he's had.
* OneWingedAngel: Has the "Foul Legacy Transformation," which incorporates the powers of both his Vision and his Delusion, allowing him to use both his Hydro and Electro powers in tandem. He does not have the constitution to use it for too long though.
* PetTheDog:
** Despite his faults, he genuinely seems to care about his siblings Anthon, Teucer and Tonia.
** He does his best to cheer up Shiki Taishou when he has a crisis upon realizing he may have been discarded by his master. Childe even reveals his DarkAndTroubledPast to him (something, it should be noted, he never speaks of), explaining they [[NotSoDifferentRemark aren't so different]] as weapons.
* PowerFloats: During his Foul Legacy mode, he floats above the ground. On the third phase of his boss battle, he even slowly descends from the destroyed ceiling to the arena.
* PowerMakesYourVoiceDeep: His Foul Legacy Transformation heavily distorts his voice.
* PowerStereotypeFlip: Tartaglia is a BloodKnight obsessed with fighting, who has to be specifically ordered not to employ violence as his first course of action, having little interest for subtler approaches and plotting. However, as a playable unit, he only uses his Hydro Vision, allowing him to manipulate water to fight.
* PromotedToPlayable: Started as a non-playable Liyue main story character before becoming summonable as a unit in the Wish system. For obvious reasons, his playable version is nowhere near as powerful as his boss fight.
* PsychopathicManchild: Very Downplayed. Tartaglia has a cheerful, childlike personality that is actually genuine but is also a BloodKnight who is obsessed with battle.
* PunchClockVillain: The Liyue Archon Quest gradually reveals that Tartaglia is with the Fatui merely to satisfy his urge to battle, which evolved from having been originally sent there by his father in an attempt to discipline him after he developed a bloodthirsty streak after three months in the Abyss as a youth. Similarly, he considers quitting the Fatui and joining the Traveler in their journey not so much out of any moral objection as much as excitement over the prospect of getting into more fights.
* RedemptionDemotion: He's ''far'' more powerful as a boss than as a playable character, and he doesn't use the same amount of skills or transformations he's shown to be capable of, though this is justified to a degree as if he had the same abilities as a playable unit as he does like a boss, he would be far too game-breaking as a unit. The InUniverse explanation is that his Foul Legacy Transformation hurts him to use for long. Just using the form for ten seconds while not at his peak during his story quest left him drained and defenseless to the point that the Traveler can point out that they can kill him right there and then.
* RedOniBlueOni: The combative, headstrong Red to Zhongli's calm and collected Blue.
* ReligiousAndMythologicalThemeNaming: His real name, Ajax, comes from the famed hero and warrior Ajax the Greater from ''Literature/TheIliad''. His little brother, Teucer, also takes his name after Ajax's half-brother. Similarly, Ajax the Greater is known for wielding spears, and one of Tartaglia's strongest moves involves attacking with a Hydro-enchanted double-ended spear.
* SequentialBoss: He has three phases when you fight him in the Golden House; he sticks to his Hydro Vision in the first, then switches to his Electro Delusion in the second, and then turns into his Foul Legacy transformation in the third. Each transition also fully restores his health.
* SeriousBusiness: Believes the arts of war and ''cooking'' are not that different, and challenges you to... try the meal he'll make for you.
* ShellShockedVeteran: Not in regards to however many battles he's been in--those are all good fun to him--but to his TrainingFromHell in the Abyss. He has DullEyesOfUnhappiness because of it and his character story goes so far as to say it's ''something he never talks about''.
* ShipTease: With the traveler.
** Beyond his [[DoesThisRemindYouOfAnything suggestive]] weekly boss dialogue, his personal quest reveals that he's written home about the Traveler so much and in such glowing terms, his little brother recognizes and trusts them on sight.
** On several occasions, he mentions wanting to introduce the Traveler to the rest of his family and give them an extended tour of his homeland. The Traveler accepts, at first claiming because they promised Teucer, but when Childe starts making plans in the Serenitea Pot, their dialogue is legitimately excited.
* ShockAndAwe: His fight in the Golden House reveals that in addition to his Hydro Vision he also has an Electro Delusion, which he switches to in the second stage of his Boss Fight.
* ShownTheirWork: As [[https://youtu.be/l8YXe7EkmoU?t=854 mentioned]] in the v2.0 Special Program, Tartaglia's melee stance incorporates elements of swordplay with the [[https://en.wikipedia.org/wiki/Shashka shashka]], a single-bladed, single-handed, guardless backsword associated with the [[https://en.wikipedia.org/wiki/Cossacks Cossack peoples]] of southern Russia and Ukraine designed for pure offense with little in the way of defense, used for dealing powerful, hard-to-dodge blows and [[JustForPun changing the tide]] of the battle in a couple of swift, sudden strikes, all of which aligns with Tartaglia's melee stance being at its most efficient when used sparingly.
* SituationalDamageAttack: His fourth Constellation upgrade, ''Abyssal Mayhem: Hydrospout'', allows his melee stance to either inflict ''Riptide Slash'' on enemies marked with Riptide or ''Riptide Flash'' otherwise (with at least four-second intervals).
* SkewedPriorities: Tartaglia puts more importance in preserving Teucer's innocence more than keeping themselves out of dangerous situations. Not only does he allow his brother into a Ruin Guard research facility, [[spoiler:but he uses his [[DangerousForbiddenTechnique Foul Legacy Transformation]] so that he can defeat a bunch of Ruin Guards before Teucer sees him, even though he was still recovering from the last time he used it, which puts his life completely at the Traveler's mercy]].
* SlidingScaleOfGameplayAndStoryIntegration:
** Tartaglia's younger brother Teucer will tell the Traveler that had were his brother had his way, he would have quit his job and join the Traveler on their journey, explaining what exactly happened if you recruited the playable version of him. He will also still express a BloodKnight desire to duel with you, explaining his weekly BossFight which can be unlocked after the Liyue Archon Quest. [[GameplayAndStorySegregation This will not explain why he is on your team if you pulled him before completing the Liyue storyline though]].
** Tartaglia doesn't seem to be lying when he claims that the bow is his worst weapon. Aside from his ranged stance's lower damage output compared to his melee stance, [[https://youtu.be/0iU3E82tAvI?t=553 a side-by-side comparison]] of him and other archers' normal attack combo shows that, where the others demonstrate graceful, practiced movements and precise footwork, his are stiff and clumsy to the point of comedy, and he ends his by outright throwing an arrow. Even Kujou Sara, who has the most straightforward archery style, at least has better control.
** Using Foul Legacy puts a strain on his body. Gameplay-wise, this translates to the cooldown time of ''Foul Legacy: Raging Tide'' increasing in proportion to the duration of his melee stance.
** Being a BloodKnight, Tartaglia would love a good fight even with his fellow Fatui. Perhaps unsurprisingly, among his ascension materials are Fatui Insignias. And he's also one of the few characters whose utility passive is directly combat-related (increase your whole party's Normal Attack level).
* SnipeHunt: His mission to [[spoiler:track down Scaramouche and reclaim the Electro Gnosis]] was [[AllForNothing pointless from the start]], since [[spoiler:Dottore had custody of both and was using them for a grand experiment in Sumeru]]. Whether or not he was deliberately sent on a wild goose chase is unclear, but either way it ended up being a waste of time. For his part, Tartaglia didn't mind it because at least he was able to do some sightseeing, went adventuring with the Traveler, made new friends, and collected gifts for his siblings.
* SpiritedCompetitor: He doesn't care about whether he wins or loses a battle--what really matters to him is the self-improvement and breaking of his own limitations. He's thrilled to discover the Traveler is a WorthyOpponent for that reason and takes his defeat in the Golden House with good cheer.
* StanceSystem: ''Foul Legacy: Raging Tide'' allows Tartaglia to switch from the ranged stance to the melee one, where for thirty seconds he enjoys enhanced damage potency and a Hydro effect that cannot be overridden with infusions, in addition to the ability to trigger the wide-ranging ''Riptide Slash'' upon enemies marked with Riptide, albeit at the expense of a lengthy cooldown time proportional to its duration (at a rate of 1.5 seconds of cooldown per one second of the stance, to a maximum of 45 seconds unless he manually switches back to ranged mode). ''Havoc: Obliteration'' also has different wide-ranging attacks depending on his stance: ''Flash of Havoc'' in his ranged mode, which applies Riptide on enemies struck, and ''Light of Obliteration'' in his melee mode, which additionally triggers ''Riptide Blast'' on marked enemies. His first Constellation upgrade, ''Foul Legacy: Tide Withholder'', reduces its cooldown time by 20%, hence reducing the maximum cooldown time to 36 seconds, and his sixth, ''Havoc: Annihilation'', resets the cooldown time once he returns to ranged mode after using ''Light of Annihilation''.
* SummonMagic: One of his attacks as a boss is to summon a Hydro narwhal to divebomb the Traveler. Much like his shortswords, it might look like [[ShapingYourAttacks Childe simply shapes his water into a narwhal]] but one of the materials acquired after his storyline boss fight is a broken piece of this narwhal's horn, meaning the narwhal is an actual living entity Childe summons rather than something he creates with his Vision.
* TeethClenchedTeamwork:
** He does not like Signora. [[spoiler:He mocks her for running from a fight with such a worthy opponent as the Traveler, and is so furious at being a pawn in her backroom deals with Zhongli that he refuses to share a boat with her even though he knows there's considerably less he can hope to do in Liyue with his ruined reputation]].
** He doesn't seem to get along well with the other Harbingers, having only bad things to say about the majority of them, disparaging their motives or finding them just plain creepy. The feeling seems mutual, such as Tartaglia wondering why Sandrone always looks like she wants to kill him.
* TeleportSpam: In his boss fight, he {{Flash Step}}s around the arena a lot.
* ThisIsGonnaSuck: Near the end of his Story Quest, both he and the Traveler took out several Ruin Guards in under a minute, before more show up. He gives an awkward smile before activating his [[DangerousForbiddenTechnique Foul Legacy Transformation]] to take them out, despite knowing it's going to take a massive toll on his body.
* TokenEvilTeammate: As of Version 3.4, Tartaglia remains the only Fatui-aligned playable character, since Scaramouche has deserted them when becoming playable.
* TokenGoodTeammate: That said, compared to his fellow Harbingers like Signora, Scaramouche, or Dottore, all of whom care nothing about others and place no importance on other people's lives, Tartaglia is genuinely AffablyEvil, has some redeeming traits like his love for his family, is vaguely suggested by Teucer to want to pull a HeelFaceTurn, and has the decency to feel slightly bad about the innocent lives that will be caught in his plan to summon Osial. This doesn't stop him from lying or manipulating others or endangering innocent lives as part of his job, of course, but it puts him above his fellow Harbingers.
* TooSpicyForYogSothoth: Despite being a BloodKnight whose abilities make him a borderline HumanoidAbomination, he finds Columbina unsettling enough that [[OOCIsSeriousBusiness he refuses to fight her]].
* TrainingFromHell: As a fourteen-year-old, Ajax got lost in a snow-covered forest before falling into a hole implied to lead to an Abyssal Domain. There he met a mysterious swordswoman named Skirk, who taught him how to fight and survive, as well as harness the Abyss' power. To him, it lasted for three months, but for his family who found him, [[YearInsideHourOutside it only happened for three days]]. This experience is something he would never tell anyone and said to "mark the end of his youth."
* UltimateJobSecurity: In the aftermath of the Osial crisis, the Snezhnayan diplomatic corps were ready to throw Tartaglia to the wolves, and would have gladly done so but for his position as a Harbinger granting him diplomatic immunity for the time being.
* TheUnfettered: In his eyes, if it helps him to grow stronger and allows him to fight stronger enemies, it's good, no matter what it is or where it comes from.
-->"If it makes me stronger, I'll take it. Vision? Great. [[CastFromHitPoints Delusion?]] Don't mind if I do. [[TheDarkArts Heretical teachings from the Abyss?]] Sign me up."
* UnfortunateNames: While his English alias, "Childe," is an archaic word that refers to a young noble (and thus an accurate translation of the Chinese), the fact that it's pronounced exactly like "child" makes it rather difficult to take him seriously. When you meet him for the first time, Paimon even {{lampshades}} the implications of it.
-->'''Paimon:''' Childe? What, so we're supposed to dote on you?
* UnusuallyUninterestingSight: As of version 3.7, if he appears in The Cat's Tail to play [=TCG=], none of the people inside seem to be freaked out over the presence of a dreaded Fatui Harbinger in public.
* UnwittingPawn: For both Zhongli and Signora, [[spoiler:who made a contract behind his back. Zhongli not only got Tartaglia to pay for Rex Lapis's expensive funeral but fooled him into thinking he was dead, and his Gnosis was ripe for the taking]]. Signora on her end manipulated him into [[spoiler:only aiding her plot to obtain the Gnosis from Zhongli through a contract]].
* UsedToBeASweetKid: He's described as having grown up a normal, even ''shy'', boy. Then he fell into the Abyss, and whatever he experienced down there made him emerge as a BloodKnight.
* VagueAge: Played with. He is one of the few characters that has his official description give him an age range that he could be around as it says he is a teenager, but it does not specify his exact age. Appearance-wise, he looks like a young adolescent, but he could potentially be younger. [[note]]This only applies to the English translation, as the Chinese and Japanese versions of his bio say that he's a "Youth" ("Qīngnián/Seinen"), using a word that denotes a person in their late teens or early twenties.[[/note]] His talk about drinking (alcohol) in the "An Organization Known as Wangsheng" story confirms that he must be over 18. The localization team quietly corrected his bio in v1.2, changing it from "teenager" to "young adult."
* VillainousBreakdown: During his duel with the Traveler in the Golden House, Tartaglia loses his cool [[spoiler:when he tries to extract the Geo Gnosis from what was supposedly Rex Lapis's corpse and finds it absent]]. He accuses the Traveler of having filced it beforehand despite their insistence otherwise and goes OneWingedAngel to make them pay, though he calms down after being defeated and rationalizes that they have not, as well as intuiting that [[spoiler:Morax may have faked his death]].
* VillainsOutShopping: A particularly literal example happens during the "Outside the Canvas, Inside the Lens: Greenery Chapter" event, where he's found in Chinju Forest hanging out with Yoimiya after finishing some "business," as he calls it. During their last conversation he's actively wondering whether he has the Mora to cover everything Yoimiya suggests as souvenirs for his younger siblings.
* WakeUpCallBoss: Being a boss just after a player ranks up into a new World Level, Tartaglia is problematic for unprepared players as he is a boss who likes to teleport behind and unleash devastating combos to anyone who is not privy to his attack patterns. His second phase is especially tricky to manage, as his Electro Delusion's specialty is a flurry of dashes and slashes, at a point in the game where all enemies have a slow and predictable attack pattern, Tartaglia forces players to be quick with spotting his tells while running around the arena avoiding his combos.
* WarriorPoet: While a battle-loving BloodKnight through and through, Tartaglia can be surprisingly eloquent at times, both in philosophy and imagery.
-->"A warrior must always be ready to face any challenge with his blade. The outcome of the battle is irrelevant--what matters is what you learn from the experience."
-->"The skeletal-white snowscape devours life without leaving any trace. It is the invisible enemy we fight against each day."
* WeCanRuleTogether: Brings up that the pair of you would be absolutely unstoppable if you decided to join him in world domination in one of his Serenitea Pot conversations, then asks if you're up for it.
* WildCard: Tartaglia doesn't really care about allegiances or things like "good" and "evil," even stating that morality itself is second to battle in his mind. Despite fulfilling his orders in Liyue, he shirks his mission to [[spoiler:retrieve the Electro Gnosis after Scaramouche apparently went rogue]], telling the Traveler he's holding out to see what they will do. However, he explains his goal is only to seek out battle, and that having plans unrelated to the Fatui isn’t unique to him, as the other Harbingers certainly have their own agendas.
* WillfullyWeak: He claims that he uses a bow because he is the ''worst'' at it, and he wants to practice with it. He never uses his Electro Delusion as a playable character, either.
* WolfInSheepsClothing: He seems friendly and open at first glance, but he has a bloodthirsty side. According to his official description, under his cheerful and confident appearance lies a deadly swordsman. You can see the "other side" of himself in his pre-release character trailers and eventually within the game itself.
* TheWorfEffect: Non-combat version. The Traveler defeats him at the conclusion of the Liyue Archon Quest, one of the dreaded Harbingers, touted as having both authority and power beyond mortals, and who can even stand up against Archons. Then it's revealed that the Harbingers are ranked by power, and you realize he's the ''weakest'' of the Harbingers.
* WorfHadTheFlu: His Foul Legacy Transformation puts a severe strain on his body, allowing the Traveler to prevail against him just by stalling long enough for him to grow too exhausted to sustain it. He also needs to rest for a good while after using it. During his Story Quest, he collapses against a wall after barely a minute using it. Despite this, Paimon asserts that Tartaglia is ''still'' stronger than the Traveler, even after [[spoiler:they defeated La Signora]], suggesting that this stamina issue is the only reason he lost the first time.
* WorldsStrongestMan: His goal is to become this, and he will do absolutely anything to gain more power to achieve it. His quotes about "conquering the world" similarly refer to defeating the strongest the world has to offer, rather than ruling over Teyvat.
-->"I was born to fight, and as long as I draw breath, there will be no end to my purpose. My limits vanish behind the horizon with every step that I take.
* WorthyOpponent: Joined the Harbingers partly to find a good fight. He does find one in the Traveler, and even after the fight in the Golden House expresses eagerness to go at it again sometime."
* WouldHitAGirl: He won't hesitate to hit either Traveler (Aether or Lumine).
* WrongContextMagic: A power that is "not of this world" fuels his Foul Legacy Transformation, specifically the "land of endless darkness" (the Abyss) that he once treaded in back when he was younger.
[[/folder]]
