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'''Alignment:''' ChaoticEvil\\

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'''Alignment:''' ChaoticEvil\\ChaoticEvil (Vortigern) / LawfulGood (Oberon)\\
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The king of the fairies debuts as the first Pretender, offering his allies a level of power beyond their wildest dreams... and the last dreams they'll ever have. He carries two unique passive skills; the first is A Midsummer Night's Dream EX, granting him immunity to all mental debuffs and Curse debuffs while his second passive Anti-Human Order D increases the party's debuff success rate by 10% against all enemies save for Foreigners, but also throws a huge middle finger to Merlin by reducing his buff success rate by 20% if the two are in the same party. His first skill, Curtain of the Night EX, charges the party's NP gauge by 20% and also buffs their NP damage. His second skill, Morning Lark EX, greatly charges a selected ally's NP gauge and generates critical stars, but inflicts a delayed and unremovable debuff that decreases their NP gauge by 20% at the end of their turn. His third skill, End of the Dream EX, greatly boosts a selected ally's Buster performance, and massively amplifies any existing NP damage buffs they have, but inflicts a delayed and unremovable debuff that completely and permanently shuts them down at the end of their turn, removing all of their buffs, inflicting the Eternal Sleep debuff, and forces them to be targeted by the enemy. His Noble Phantasm, "'''Wry Rhyme Goodfellow - A Tale of a Dream Held Over the Distance'''"[[labelnote:note]]Ascension 1 and 2[[/labelnote]]/"'''Lie Like Vortigern - Eye of a Dream that Falls to the Distance'''"[[labelnote:note]]Ascension 3 only[[/labelnote]], is an [=AoE=] Buster attack that removes the enemies' offensive buffs before dealing greatly increased damage to Lawful enemies in particular. However, any enemy that survives will be put to sleep and be granted an Invincibility buff, preventing them from attacking or being attacked.\\\

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The king of the fairies debuts as the first Pretender, offering his allies a level of power beyond their wildest dreams... and the last dreams they'll ever have. He carries two unique passive skills; the first is A Midsummer Night's Dream EX, granting him immunity to all mental debuffs and Curse debuffs while his second passive Anti-Human Order D increases the party's debuff success rate by 10% against all enemies save for Foreigners, but also throws a huge middle finger to Merlin by reducing his buff success rate by 20% if the two are in the same party. His first skill, Curtain of the Night EX, charges the party's NP gauge by 20% and also buffs their NP damage. His second skill, Morning Lark EX, greatly charges a selected ally's NP gauge and generates critical stars, but inflicts a delayed and unremovable debuff that decreases their NP gauge by 20% at the end of their turn. His third skill, End of the Dream EX, greatly boosts a selected ally's Buster performance, and massively amplifies any existing NP damage buffs they have, but inflicts a delayed and unremovable debuff that completely and permanently shuts them down at the end of their turn, removing all of their buffs, inflicting the Eternal Sleep debuff, and forces them to be targeted by the enemy. His Noble Phantasm, "'''Wry "Wry Rhyme Goodfellow - A Tale of a Dream Held Over the Distance'''"[[labelnote:note]]Ascension Distance"[[labelnote:note]]Ascension 1 and 2[[/labelnote]]/"'''Lie 2[[/labelnote]]/"Lie Like Vortigern - Eye of a Dream that Falls to the Distance'''"[[labelnote:note]]Ascension Distance"[[labelnote:note]]Ascension 3 only[[/labelnote]], is an [=AoE=] Buster attack that removes the enemies' offensive buffs before dealing greatly increased damage to Lawful enemies in particular. However, any enemy that survives will be put to sleep and be granted an Invincibility buff, preventing them from attacking or being attacked.\\\
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The king of the fairies debuts as the first Pretender, offering his allies a level of power beyond their wildest dreams... and the last dreams they'll ever have. He carries two unique passive skills; the first is A Midsummer Night's Dream EX, granting him immunity to all mental debuffs and Curse debuffs while his second passive Anti-Human Order D increases the party's debuff success rate by 10% against all enemies save for Foreigners, but also throws a huge middle finger to Merlin by reducing his buff success rate by 20% if the two are in the same party. His first skill, Curtain of the Night EX, charges the party's NP gauge by 20% and also buffs their NP damage. His second skill, Morning Lark EX, greatly charges a selected ally's NP gauge and generates critical stars, but inflicts a delayed and unremovable debuff that decreases their NP gauge by 20% at the end of their turn. His third skill, End of the Dream EX, greatly boosts a selected ally's Buster performance, and massively amplifies any existing NP damage buffs they have, but inflicts a delayed and unremovable debuff that completely and permanently shuts them down at the end of their turn, removing all of their buffs, inflicting the Eternal Sleep debuff, and forces them to be targeted by the enemy. His Noble Phantasm, "'''Wry Rhyme Goodfellow: A Tale of a Dream Held Over the Distance'''"[[labelnote:note]]Ascension 1 and 2[[/labelnote]]/"'''Lie Like Vortigern: Eye of a Dream that Falls to the Distance'''"[[labelnote:note]]Ascension 3 only[[/labelnote]], is an [=AoE=] Buster attack that removes the enemies' offensive buffs before dealing greatly increased damage to Lawful enemies in particular. However, any enemy that survives will be put to sleep and be granted an Invincibility buff, preventing them from attacking or being attacked.\\\

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The king of the fairies debuts as the first Pretender, offering his allies a level of power beyond their wildest dreams... and the last dreams they'll ever have. He carries two unique passive skills; the first is A Midsummer Night's Dream EX, granting him immunity to all mental debuffs and Curse debuffs while his second passive Anti-Human Order D increases the party's debuff success rate by 10% against all enemies save for Foreigners, but also throws a huge middle finger to Merlin by reducing his buff success rate by 20% if the two are in the same party. His first skill, Curtain of the Night EX, charges the party's NP gauge by 20% and also buffs their NP damage. His second skill, Morning Lark EX, greatly charges a selected ally's NP gauge and generates critical stars, but inflicts a delayed and unremovable debuff that decreases their NP gauge by 20% at the end of their turn. His third skill, End of the Dream EX, greatly boosts a selected ally's Buster performance, and massively amplifies any existing NP damage buffs they have, but inflicts a delayed and unremovable debuff that completely and permanently shuts them down at the end of their turn, removing all of their buffs, inflicting the Eternal Sleep debuff, and forces them to be targeted by the enemy. His Noble Phantasm, "'''Wry Rhyme Goodfellow: Goodfellow - A Tale of a Dream Held Over the Distance'''"[[labelnote:note]]Ascension 1 and 2[[/labelnote]]/"'''Lie Like Vortigern: Vortigern - Eye of a Dream that Falls to the Distance'''"[[labelnote:note]]Ascension 3 only[[/labelnote]], is an [=AoE=] Buster attack that removes the enemies' offensive buffs before dealing greatly increased damage to Lawful enemies in particular. However, any enemy that survives will be put to sleep and be granted an Invincibility buff, preventing them from attacking or being attacked.\\\
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The king of the fairies debuts as the first Pretender, offering his allies a level of power beyond their wildest dreams... and the last dreams they'll ever have. He carries two unique passive skills; the first is A Midsummer Night's Dream EX, granting him immunity to all mental debuffs and Curse debuffs while his second passive Anti-Human Order D increases the party's debuff success rate by 10% against all enemies save for Foreigners, but also throws a huge middle finger to Merlin by reducing his buff success rate by 20% if the two are in the same party. His first skill, Curtain of the Night EX, charges the party's NP gauge by 20% and also buffs their NP damage. His second skill, Morning Lark EX, greatly charges a selected ally's NP gauge and generates critical stars, but inflicts a delayed and unremovable debuff that decreases their NP gauge by 20% at the end of their turn. His third skill, End of the Dream EX, greatly boosts a selected ally's Buster performance, and massively amplifies any existing NP damage buffs they have, but inflicts a delayed and unremovable debuff that completely and permanently shuts them down at the end of their turn, removing all of their buffs, inflicting the Eternal Sleep debuff, and forces them to be targeted by the enemy. His Noble Phantasm, Wry Rhyme Goodfellow/Lie Like Vortigern, is an [=AoE=] Buster attack that removes the enemies' offensive buffs before dealing greatly increased damage to Lawful enemies in particular. However, any enemy that survives will be put to sleep and be granted an Invincibility buff, preventing them from attacking or being attacked.\\\

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The king of the fairies debuts as the first Pretender, offering his allies a level of power beyond their wildest dreams... and the last dreams they'll ever have. He carries two unique passive skills; the first is A Midsummer Night's Dream EX, granting him immunity to all mental debuffs and Curse debuffs while his second passive Anti-Human Order D increases the party's debuff success rate by 10% against all enemies save for Foreigners, but also throws a huge middle finger to Merlin by reducing his buff success rate by 20% if the two are in the same party. His first skill, Curtain of the Night EX, charges the party's NP gauge by 20% and also buffs their NP damage. His second skill, Morning Lark EX, greatly charges a selected ally's NP gauge and generates critical stars, but inflicts a delayed and unremovable debuff that decreases their NP gauge by 20% at the end of their turn. His third skill, End of the Dream EX, greatly boosts a selected ally's Buster performance, and massively amplifies any existing NP damage buffs they have, but inflicts a delayed and unremovable debuff that completely and permanently shuts them down at the end of their turn, removing all of their buffs, inflicting the Eternal Sleep debuff, and forces them to be targeted by the enemy. His Noble Phantasm, Wry "'''Wry Rhyme Goodfellow/Lie Goodfellow: A Tale of a Dream Held Over the Distance'''"[[labelnote:note]]Ascension 1 and 2[[/labelnote]]/"'''Lie Like Vortigern, Vortigern: Eye of a Dream that Falls to the Distance'''"[[labelnote:note]]Ascension 3 only[[/labelnote]], is an [=AoE=] Buster attack that removes the enemies' offensive buffs before dealing greatly increased damage to Lawful enemies in particular. However, any enemy that survives will be put to sleep and be granted an Invincibility buff, preventing them from attacking or being attacked.\\\
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Reorganizing per discussion with Queen Draco's release.


''Unplayable and Arcade Exclusive:'' [[Characters/FateGrandOrderUnplayable Unplayable]] ([[Characters/FateGrandOrderBeasts Beasts]] | [[Characters/FateGrandOrderBeastI Beast I]]) | [[Characters/FateGrandOrderArcadeExclusive Arcade Exclusive]]\\
''Other Notable Characters:'' [[Characters/FateGrandOrderChaldeaSecurityOrganization Chaldea Security Organization]] ([[Characters/FateGrandOrderProtagonist Protagonist]] | [[Characters/FateGrandOrderMashKyrielight Mash Kyrielight]]) | [[Characters/FateGrandOrderVillains Villains]] ([[Characters/FateGrandOrderObserverOnTimelessTempleVillains Observer on Timeless Temple Villains]] | [[Characters/FateGrandOrderEpicOfRemnantVillains Epic of Remnant Villains]] | [[Characters/FateGrandOrderCosmosInTheLostbeltVillains Cosmos in the Lostbelt Villains]] ([[Characters/FateGrandOrderCrypters Crypters]] | [[Characters/FateGrandOrderForeignGodAndForces Foreign God and Forces]] | [[Characters/FateGrandOrderLostbeltKings Lostbelt Kings]]) | [[Characters/FateGrandOrderEventVillains Event Villains]] | [[Characters/FateGrandOrderInterludeVillains Interlude Villains]]) | [[Characters/FateGrandOrderOtherCharacters Other Characters]] ]]-]]]

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''Unplayable and Arcade Exclusive:'' [[Characters/FateGrandOrderUnplayable Unplayable]] ([[Characters/FateGrandOrderBeasts Beasts]] | [[Characters/FateGrandOrderBeastI Beast I]]) | [[Characters/FateGrandOrderArcadeExclusive Arcade Exclusive]]\\
''Other Notable Characters:'' [[Characters/FateGrandOrderChaldeaSecurityOrganization Chaldea Security Organization]] ([[Characters/FateGrandOrderProtagonist Protagonist]] | [[Characters/FateGrandOrderMashKyrielight Mash Kyrielight]]) | [[Characters/FateGrandOrderVillains Villains]] ([[Characters/FateGrandOrderObserverOnTimelessTempleVillains ([[Characters/FateGrandOrderBeasts Beasts]] | [[Characters/FateGrandOrderBeastI Beast I]] | [[Characters/FateGrandOrderObserverOnTimelessTempleVillains Observer on Timeless Temple Villains]] | [[Characters/FateGrandOrderEpicOfRemnantVillains Epic of Remnant Villains]] | [[Characters/FateGrandOrderCosmosInTheLostbeltVillains Cosmos in the Lostbelt Villains]] ([[Characters/FateGrandOrderCrypters Crypters]] | [[Characters/FateGrandOrderForeignGodAndForces Foreign God and Forces]] | [[Characters/FateGrandOrderLostbeltKings Lostbelt Kings]]) | [[Characters/FateGrandOrderEventVillains Event Villains]] | [[Characters/FateGrandOrderInterludeVillains Interlude Villains]]) | [[Characters/FateGrandOrderOtherCharacters Other Characters]] ]]-]]]
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''Extra Classes:'' [[Characters/FateGrandOrderRulers Rulers]] | [[Characters/FateGrandOrderAvengers Avengers]] | [[Characters/FateGrandOrderMoonCancers Moon Cancers]] | [[Characters/FateGrandOrderAlterEgos Alter Egos]] | [[Characters/FateGrandOrderForeigners Foreigners]] | [[Characters/FateGrandOrderPretenders Pretenders]] ('''Oberon''')\\

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''Extra Classes:'' ''[[Characters/FateGrandOrderExtra Extra Classes]]:'' [[Characters/FateGrandOrderRulers Rulers]] | [[Characters/FateGrandOrderAvengers Avengers]] | [[Characters/FateGrandOrderMoonCancers Moon Cancers]] | [[Characters/FateGrandOrderAlterEgos Alter Egos]] | [[Characters/FateGrandOrderForeigners Foreigners]] | [[Characters/FateGrandOrderPretenders Pretenders]] ('''Oberon''')\\
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Making it consistent with how episodic title formatting is handled by the official localization


* BigBadFriend: During several forced choice sections in ''Avalon le Fae'' with him, the player can choose dialogues which imply that they trust him. While he eventually genuinely cared for both the protagonist and Altria Caster, he still went out of his way to destroy Fairy Britain and then the Proper Human History.

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* BigBadFriend: During several forced choice sections in ''Avalon "Avalon le Fae'' Fae" with him, the player can choose dialogues which imply dialogue that implies they trust him. While he eventually genuinely cared for both the protagonist and Altria Caster, he still went out of his way to destroy Fairy Faerie Britain and then the Proper Human History.
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* BigBadFriend: During several forced choice sections in ''Avalon le Fae'' with him, the player can choose dialogues which imply that they trust him. While he eventually genuinely cared for both the protagonist and Altria Caster, he still went out of his way to destroy Fairy Britain and then the Proper Human History.
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* DudeLooksLikeALady: His appearace in the second ''Cosmmos in the Lostbelt'' opening made many mistake him for a woman.

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'''First appearance:''' ''Fate/Grand Order'' (Oberon), ''Garden of Avalon'' (Vortigern)\\

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'''First appearance:''' ''Fate/Grand Order'' (Oberon), ''Garden of Avalon'' ''Literature/GardenOfAvalon'' (Vortigern)\\



** His final fate after his defeat by Chaldea and Altria Avalon: he's weakened enough that he ends up falling off the Storm Border into the endless tunnels that makes up the Hollow Worm. The keyword being ''endless''; Oberon will never, '''EVER''', hit the bottom. He is unable to escape from it either. Despite the sheer horror of it all, Oberon himself is okay with his predicament, since he DID fulfill his purpose of destroying Faerie Britain in the end. He's only saddened when he realizes that he won't be able to see PHH for himself, noting that its sky is actually rather beautiful.

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** His final fate after his defeat by Chaldea and Altria Avalon: he's weakened enough that he ends up falling off the Storm Border into the endless tunnels that makes up the Hollow Worm. The keyword being ''endless''; Oberon will never, '''EVER''', hit the bottom. He is unable to escape from it either. Despite the sheer horror of it all, Oberon himself is okay with his predicament, since he DID fulfill his purpose of destroying Faerie Britain in the end. end, and he views living to be so miserable that whether he's inside the Insect or not makes no difference to him. He's only saddened when he realizes that he won't be able by being unable to see destroy PHH for himself, the sake of his Titania, noting that its sky is actually rather beautiful.



* ButForMeItWasTuesday: Why did Oberon have the Fang Clan wipe out the Wing Clan, leaving Muryan as its sole survivor? As he chillingly tells Muryan after running her through with his fist:
---> ''"I really didn't have a reason. I was just having a bad day"''.



* ConfusionFu: According to the ''Storm Border'''s analysis of his Spirit Origin as Oberon, his class constantly changes by the second which is [[GameplayAndStoryIntegration reflected each time he's used as story support]] in Lostbelt 6, including Caster, Archer, and Rider. His class reveal settles this by revealing that he's actually ''none'' of them (including his default 'Ruler' class) and is a completely new class, Pretender.

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* ConfusionFu: According to the ''Storm Border'''s analysis of his Spirit Origin as Oberon, his class Class constantly changes by the second which is [[GameplayAndStoryIntegration reflected each time he's used as story support]] in Lostbelt 6, including Caster, Archer, and Rider. His class reveal settles this by revealing that he's actually ''none'' of them (including his default 'Ruler' class) and is a completely new class, Pretender.



* EvilIsPetty: Why did Oberon have the Fang Clan wipe out the Wing Clan, leaving Muryan as its sole survivor? As he chillingly tells Muryan after running her through with his fist:
---> ''"I really didn't have a reason. I was just having a bad day"''.



* HumanoidAbomination: His Servant form as Oberon looks ordinary on the surface, but the ''Storm Border'''s analysis reveals just how strange he really is. His Spirit Origin is in a state of constantly fluctuation, doesn't belong to Proper Human History, and is neither human nor faerie nor any sort of life-form previously encountered though Saber Altria Alter firmly identifies him as draconic in nature. As Da Vinci puts it, "he's an invisible man who's there and not there at the same time," just like how Vortigern of Proper Human History was "a hole in the world". It's also implied that he's nothing more than a terminal housing the mind of the Insect of the Abyss, and both of them are two halves of the same being.

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* HumanoidAbomination: His Servant form as Oberon looks ordinary on the surface, but the ''Storm Border'''s analysis reveals just how strange he really is. His Spirit Origin is in a state of constantly constant fluctuation, doesn't belong to Proper Human History, and is neither human nor faerie nor any sort of life-form previously encountered though Saber Altria Alter firmly identifies him as draconic in nature. As Da Vinci puts it, "he's an invisible man who's there and not there at the same time," just like how Vortigern of Proper Human History was "a hole in the world". It's also implied that he's nothing more than a terminal housing the mind of the Insect of the Abyss, and both of them are two halves of the same being.



** Lostbelt No. 7 both proves and disapproves his belief that the audience doesn't care about the stories. [[spoiler:Chaldea always remembered the Lostbelts they destroyed and tell the Deinos about their journeys complete with philosophical debates. However, there ''are'' people who want the Lostbelts gone now that they've served their purpose: Marisbury and CHALDEAS, who created the Lostbelts so they could be destroyed for the sake of their plan.]]

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** Lostbelt No. 7 both proves and disapproves disproves his belief that the audience doesn't care about the stories. [[spoiler:Chaldea always remembered the Lostbelts they destroyed and tell the Deinos about their journeys complete with philosophical debates. However, there ''are'' people who want the Lostbelts gone now that they've served their purpose: Marisbury and CHALDEAS, who created the Lostbelts so they could be destroyed for the sake of their plan.]]
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''Three Knight Classes:'' [[Characters/FateGrandOrderSabers Sabers]] ([[Characters/FateGrandOrderSabersAToF A-F]] | [[Characters/FateGrandOrderSabersGToM G-M]] | [[Characters/FateGrandOrderSabersNToZ N-Z]]) | [[Characters/FateGrandOrderArchers Archers]] ([[Characters/FateGrandOrderArchersAToC A-C]] | [[Characters/FateGrandOrderArchersDToM D-M]] | [[Characters/FateGrandOrderArchersNToZ N-Z]]) | [[Characters/FateGrandOrderLancers Lancers]] ([[Characters/FateGrandOrderLancersAToF A-F]] | [[Characters/FateGrandOrderLancersGToM G-M]] | [[Characters/FateGrandOrderLancersNToZ N-Z]])\\

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''Three Knight Classes:'' [[Characters/FateGrandOrderSabers Sabers]] ([[Characters/FateGrandOrderSabersAToF A-F]] | [[Characters/FateGrandOrderSabersGToM G-M]] | [[Characters/FateGrandOrderSabersNToZ N-Z]]) [[Characters/FateGrandOrderSabersNToR N-R]] | [[Characters/FateGrandOrderSabersSToZ S-Z]]) | [[Characters/FateGrandOrderArchers Archers]] ([[Characters/FateGrandOrderArchersAToC A-C]] | [[Characters/FateGrandOrderArchersDToM D-M]] | [[Characters/FateGrandOrderArchersNToZ N-Z]]) | [[Characters/FateGrandOrderLancers Lancers]] ([[Characters/FateGrandOrderLancersAToF A-F]] | [[Characters/FateGrandOrderLancersGToM G-M]] | [[Characters/FateGrandOrderLancersNToZ N-Z]])\\

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All that was described above are all but lies when it comes to this Oberon. He is not a Servant from Proper Human History, but a doomsday device, created by the Lostbelt Britain consumed by Sefar, to destroy Faerie Britain out of disgust for its inhabitants. As the will of the isle personified, he naturally is named Vortigern, a name shared with the uncle of King Arthur, the first incarnated will of Britain and personification of the white dragon who tried to reject the incoming Age of Man in Proper Human History. He was first born 1,000 years ago as the King of Moss when he tried to bring an end to the land of fairies in the Great Calamity, but was slain after a decades-long war. He was reborn during the present day in the Autumn Forest of Wales, where the outsider fairies claimed him as their king, making him "Oberon".\\\

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All that was described above are all but lies when it comes to this Oberon. He is not a Servant from Proper Human History, but a doomsday device, created by the Lostbelt Britain consumed by Sefar, to destroy Faerie Britain out of disgust for its inhabitants. As the will of the isle personified, he naturally is named Vortigern, a name shared with the uncle of King Arthur, the first incarnated will of Britain and personification of the white dragon who tried to reject the incoming Age of Man in Proper Human History. He was first born 1,000 years ago as the King of Moss when he tried to bring an end to the land of fairies in the Great Calamity, but was slain after a decades-long war. He was reborn during the present day in the Autumn Forest of Wales, where the outsider fairies claimed him as their king, making him "Oberon". For the next 16 years he orchestrated Morgan's downfall and Cernunnos's destruction so he could unseal his true body and become the final Great Calamity, the Insect of the Abyss, and destroy the cursed island as he was born to do.\\\



* DramaticallyMissingThePoint: Oberon believes that the stories matter more than the audience, but Nursery Rhyme, who herself is one of those stories and the most qualified to judge his beliefs, responds that stories exist primarily for the audience's sake. His lack of response implies deep down he knows she's right but he's just too bitter and hateful to change his mind.



* {{Irony}}: In Proper Human History Vortigern was the embodiment of Britain's will who wanted a world dominated by Mystery and fought to keep the Age of Man from happening. In the Lostbelt, Oberon Vortigern seeks to destroy Faerie Britain, which is exactly the kind of world the other Vortigern wanted.

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* {{Irony}}: {{Irony}}:
**
In Proper Human History Vortigern was the embodiment of Britain's will who wanted a world dominated by Mystery and fought to keep the Age of Man from happening. In the Lostbelt, Oberon Vortigern seeks to destroy Faerie Britain, which is exactly the kind of world the other Vortigern wanted.wanted.
** Lostbelt No. 7 both proves and disapproves his belief that the audience doesn't care about the stories. [[spoiler:Chaldea always remembered the Lostbelts they destroyed and tell the Deinos about their journeys complete with philosophical debates. However, there ''are'' people who want the Lostbelts gone now that they've served their purpose: Marisbury and CHALDEAS, who created the Lostbelts so they could be destroyed for the sake of their plan.]]
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[[caption-width-right:350:[[labelnote:April Fool's]]\\
https://static.tvtropes.org/pmwiki/pub/images/april_fools_oberon.PNG[[/labelnote]]]]
[[caption-width-right:350:[[labelnote:April Fool's Fate/Grail League]]\\
https://static.tvtropes.org/pmwiki/pub/images/april_fools_fate_grail_league_oberon.png[[/labelnote]]]]
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* TrademarkFavouriteFood: Honeydew melons, as revealed in one of his My Room lines. Like everything else about him, it's not clear whether he actually likes it, since Altria Caster in her materials comment towards him accuses him of constantly ordering them simply to piss off everyone in the cafeteria by claiming that they're "rare and expensive".

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* TrademarkFavouriteFood: Honeydew melons, as revealed in one of his My Room lines. Like everything else about him, it's not clear whether he actually likes it, since Altria Caster in her materials comment towards him accuses him of constantly ordering them simply to piss off pester everyone in the cafeteria by claiming that they're "rare else about their rarity and expensive".value.
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Editing for consistency.


All that was described above are all but lies when it comes to this Oberon. He is not a Servant from Proper Human History, but a doomsday device, created by the Lostbelt Britain consumed by Sefar, to destroy Faerie Britain out of disgust for its inhabitants. As the will of the isle personified, he naturally is named Vortigern, a name shared with the uncle of King Arthur, the first incarnated will of Britain and personification of the white dragon who tried to reject the incoming Age of Man in Proper Human History. He was first born 1,000 years ago as the King of Mors when he tried to bring an end to the land of fairies in the Great Calamity, but was slain after a decades-long war. He was reborn during the present day in the Autumn Forest of Wales, where the outsider fairies claimed him as their king, making him "Oberon".\\\

to:

All that was described above are all but lies when it comes to this Oberon. He is not a Servant from Proper Human History, but a doomsday device, created by the Lostbelt Britain consumed by Sefar, to destroy Faerie Britain out of disgust for its inhabitants. As the will of the isle personified, he naturally is named Vortigern, a name shared with the uncle of King Arthur, the first incarnated will of Britain and personification of the white dragon who tried to reject the incoming Age of Man in Proper Human History. He was first born 1,000 years ago as the King of Mors Moss when he tried to bring an end to the land of fairies in the Great Calamity, but was slain after a decades-long war. He was reborn during the present day in the Autumn Forest of Wales, where the outsider fairies claimed him as their king, making him "Oberon".\\\



* ArchEnemy: Much like how Proper Human History Vortigern considers Altria as his greatest obstacle in preserving the Age of Gods and killing the humans of Britain, this Vortigern regards Morgan, who tries to preserve Faerie Britain against the wishes of the island itself, as his enemy, especially during his time as King of the Mors. Likewise, Morgan also sees him as a personal threat, and expresses her displeasure to him in a voice line. That being said, see ItsPersonal below.

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* ArchEnemy: Much like how Proper Human History Vortigern considers Altria as his greatest obstacle in preserving the Age of Gods and killing the humans of Britain, this Vortigern regards Morgan, who tries to preserve Faerie Britain against the wishes of the island itself, as his enemy, especially during his time as King of the Mors.Moss. Likewise, Morgan also sees him as a personal threat, and expresses her displeasure to him in a voice line. That being said, see ItsPersonal below.



** After the Welsh forest is burnt down, he takes off by himself after one of the surviving enemy commanders. The commander is attacked by a dark corruptive substance that he finds familiarity with by citing the Mors Wars and that it's something Morgan would be familiar with before being consumed by it. As it turns out, Vortigern was summoned once before into the Lostbelt as the Great Calamity of 1000 AD, the King of the Mors that attempted to destroy Faerie Britain with an army of such monsters in the same-named wars.

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** After the Welsh forest is burnt down, he takes off by himself after one of the surviving enemy commanders. The commander is attacked by a dark corruptive substance that he finds familiarity with by citing the Mors Moss Wars and that it's something Morgan would be familiar with before being consumed by it. As it turns out, Vortigern was summoned once before into the Lostbelt as the Great Calamity of 1000 AD, the King of the Mors Moss that attempted to destroy Faerie Britain with an army of such monsters in the same-named wars.



* HeinzHybrid: Goredolf states Proper Human History Vortigern is a Fae embodiment of Britain's will (specifically to preserve its Mysteries and destroy its humans); he is also human in flesh and blood who then transforms into a dragon at the end of his life. ''This'' Vortigern is also an incarnation of Britain's will (specifically to destroy the Faeries and their sins), a dragon and a Faerie at once; but it's unclear if he has been a Faerie since the moment he is summoned into Faerie Britain as the Great Calamity King of the Mors, or if he only becomes one after he is resummoned in Servant format.

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* HeinzHybrid: Goredolf states Proper Human History Vortigern is a Fae embodiment of Britain's will (specifically to preserve its Mysteries and destroy its humans); he is also human in flesh and blood who then transforms into a dragon at the end of his life. ''This'' Vortigern is also an incarnation of Britain's will (specifically to destroy the Faeries and their sins), a dragon and a Faerie at once; but it's unclear if he has been a Faerie since the moment he is summoned into Faerie Britain as the Great Calamity King of the Mors, Moss, or if he only becomes one after he is resummoned in Servant format.



* ItsPersonal: Zigzagged regarding his relationship with Morgan. Ever since his first incarnation as King of the Mors, Vortigern did everything he could to kill her and undo everything she had ever done by destroying Faerie Britain, and there is no denying he has a degree of hatred toward her, which is mutual on Morgan's part. However, upon his Third Ascension, he claims the reason he didn't watch Morgan's death in the Lostbelt is because he acknowledges he was only born as a response to Morgan's actions in preserving Faerie Britain, and he doesn't hate "the picture book she drew" - as in, he doesn't hate the story she has created.

to:

* ItsPersonal: Zigzagged regarding his relationship with Morgan. Ever since his first incarnation as King of the Mors, Moss, Vortigern did everything he could to kill her and undo everything she had ever done by destroying Faerie Britain, and there is no denying he has a degree of hatred toward her, which is mutual on Morgan's part. However, upon his Third Ascension, he claims the reason he didn't watch Morgan's death in the Lostbelt is because he acknowledges he was only born as a response to Morgan's actions in preserving Faerie Britain, and he doesn't hate "the picture book she drew" - as in, he doesn't hate the story she has created.



** His profile notes he has been incarnated three times, with his first life as the King of Mors and his third and current life as Oberon. Nothing is spoken about his second incarnation.

to:

** His profile notes he has been incarnated three times, with his first life as the King of Mors Moss and his third and current life as Oberon. Nothing is spoken about his second incarnation.



* PersonOfMassDestruction: Twofold. When first summoned into the Lostbelt as King of the Mors, Vortigern was able to corrupt an untold amount of Faeries into Mors, enough to be considered a Great Calamity, and fought Morgan’s forces in a war with them. Then once Cernunnos is defeated and he realizes his nature as Insect of the Abyss, he takes this up a couple notches by being able to suck in everything (up to and including the ''entire planet'') into the pit Cernunnos was sleeping in.

to:

* PersonOfMassDestruction: Twofold. When first summoned into the Lostbelt as King of the Mors, Moss, Vortigern was able to corrupt an untold amount of Faeries into Mors, Moss, enough to be considered a Great Calamity, and fought Morgan’s forces in a war with them. Then once Cernunnos is defeated and he realizes his nature as Insect of the Abyss, he takes this up a couple notches by being able to suck in everything (up to and including the ''entire planet'') into the pit Cernunnos was sleeping in.



* PurposeDrivenImmortality: As long as Morgan tries to save the land, Britain will keep fighting back and incarnating its will to destroy it. He's already died once before as the King of Mors to Woodwose, but was revived as Oberon.

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* PurposeDrivenImmortality: As long as Morgan tries to save the land, Britain will keep fighting back and incarnating its will to destroy it. He's already died once before as the King of Mors Moss to Woodwose, but was revived as Oberon.



* ShapingYourAttacks: Several of his projectiles decay into a suspiciously dark-looking mud-like substance after they connect with the target. It's foreshadowing how he was the King of the Mors by having a more refined version of their sludge attacks.

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* ShapingYourAttacks: Several of his projectiles decay into a suspiciously dark-looking mud-like substance after they connect with the target. It's foreshadowing how he was the King of the Mors Moss by having a more refined version of their sludge attacks.



* TwoAliasesOneCharacter: This man first materialized into Faerie Britain as Vortigern, started the Great Calamity of 1000 AD as the King of the Mors, was reincarnated in a Servant format modeled after Oberon, pretended to be "Merlin" in order to teach Altria Caster magic, is identified by Melusine as the White Dragon of Britain, and finally became the last of the Great Calamities as the Insect of the Abyss. So in total he has ''[[ExaggeratedTrope six different aliases]]'' as just one character. He's actually pretty proud of having a ton of names and titles to go by.

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* TwoAliasesOneCharacter: This man first materialized into Faerie Britain as Vortigern, started the Great Calamity of 1000 AD as the King of the Mors, Moss, was reincarnated in a Servant format modeled after Oberon, pretended to be "Merlin" in order to teach Altria Caster magic, is identified by Melusine as the White Dragon of Britain, and finally became the last of the Great Calamities as the Insect of the Abyss. So in total he has ''[[ExaggeratedTrope six different aliases]]'' as just one character. He's actually pretty proud of having a ton of names and titles to go by.
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* OmnicidalManiac: A step up actually from Proper Human History Vortigern in the ''Garden of Avalon'' novel, who sought simply to [[KillEmAll wipe out mankind]] to ensure a world dominated by Mystery; in the time Vortigern spent undermining the Lostbelt, seeking to destroy it so he could escape, he decided to elevate his goal to simply annihilating '''''ALL''''' of Proper Human History, which includes the world.

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* OmnicidalManiac: A step up actually from Proper Human History Vortigern in the ''Garden of Avalon'' novel, who sought simply to [[KillEmAll wipe out mankind]] mankind to ensure a world dominated by Mystery; in the time Vortigern spent undermining the Lostbelt, seeking to destroy it so he could escape, he decided to elevate his goal to simply annihilating '''''ALL''''' of Proper Human History, which includes the world.
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The king of the fairies debuts as the first Pretender, offering Buster Servants a level of power beyond their wildest dreams... and the last dreams they'll ever have. He carries two unique passive skills; the first is A Midsummer Night's Dream EX, granting him immunity to all mental debuffs and Curse debuffs while his second passive Anti-Human Order D increases the party's debuff success rate by 10% against all enemies save for Foreigners, but also throws a huge middle finger to Merlin by reducing his buff success rate by 20% if the two are in the same party. His first skill, Curtain of the Night EX, charges the party's NP gauge by 20% and also buffs their NP damage. His second skill, Morning Lark EX, greatly charges a selected ally's NP gauge and generates critical stars, but inflicts a delayed and unremovable debuff that decreases their NP gauge by 20% at the end of their turn. His third skill, End of the Dream EX, greatly boosts a selected ally's Buster performance, and massively amplifies any existing NP damage buffs they have, but inflicts a delayed and unremovable debuff that completely and permanently shuts them down at the end of their turn, removing all of their buffs, inflicting the Eternal Sleep debuff, and forces them to be targeted by the enemy. His Noble Phantasm, Wry Rhyme Goodfellow/Lie Like Vortigern, is an [=AoE=] Buster attack that removes the enemies' offensive buffs before dealing greatly increased damage to Lawful enemies in particular. However, any enemy that survives will be put to sleep and be granted an Invincibility buff, preventing them from attacking or being attacked.\\\

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The king of the fairies debuts as the first Pretender, offering Buster Servants his allies a level of power beyond their wildest dreams... and the last dreams they'll ever have. He carries two unique passive skills; the first is A Midsummer Night's Dream EX, granting him immunity to all mental debuffs and Curse debuffs while his second passive Anti-Human Order D increases the party's debuff success rate by 10% against all enemies save for Foreigners, but also throws a huge middle finger to Merlin by reducing his buff success rate by 20% if the two are in the same party. His first skill, Curtain of the Night EX, charges the party's NP gauge by 20% and also buffs their NP damage. His second skill, Morning Lark EX, greatly charges a selected ally's NP gauge and generates critical stars, but inflicts a delayed and unremovable debuff that decreases their NP gauge by 20% at the end of their turn. His third skill, End of the Dream EX, greatly boosts a selected ally's Buster performance, and massively amplifies any existing NP damage buffs they have, but inflicts a delayed and unremovable debuff that completely and permanently shuts them down at the end of their turn, removing all of their buffs, inflicting the Eternal Sleep debuff, and forces them to be targeted by the enemy. His Noble Phantasm, Wry Rhyme Goodfellow/Lie Like Vortigern, is an [=AoE=] Buster attack that removes the enemies' offensive buffs before dealing greatly increased damage to Lawful enemies in particular. However, any enemy that survives will be put to sleep and be granted an Invincibility buff, preventing them from attacking or being attacked.\\\
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The king of the fairies debuts as the first Pretender, offering Buster Servants a level of support beyond their wildest dreams... and their last. He carries two unique passive skills; the first is A Midsummer Night's Dream EX, granting him immunity to all mental debuffs and Curse debuffs while his second passive Anti-Human Order D increases the party's debuff success rate by 10% against all enemies save for Foreigners, but also throws a huge middle finger to Merlin by reducing his buff success rate by 20% if the two are in the same party. His first skill, Curtain of the Night EX, charges the party's NP gauge by 20% and also buffs their NP damage. His second skill, Morning Lark EX, greatly charges a selected ally's NP gauge and generates critical stars, but inflicts a delayed and unremovable debuff that decreases their NP gauge by 20% at the end of their turn. His third skill, End of the Dream EX, greatly boosts a selected ally's Buster performance, and massively amplifies any existing NP damage buffs they have, but inflicts a delayed and unremovable debuff that completely and permanently shuts them down at the end of their turn, removing all of their buffs, inflicting the Eternal Sleep debuff, and forces them to be targeted by the enemy. His Noble Phantasm, Wry Rhyme Goodfellow/Lie Like Vortigern, is an [=AoE=] Buster attack that removes the enemies' offensive buffs before dealing greatly increased damage to Lawful enemies in particular. However, any enemy that survives will be put to sleep and be granted an Invincibility buff, preventing them from attacking or being attacked.\\\

to:

The king of the fairies debuts as the first Pretender, offering Buster Servants a level of support power beyond their wildest dreams... and their last.the last dreams they'll ever have. He carries two unique passive skills; the first is A Midsummer Night's Dream EX, granting him immunity to all mental debuffs and Curse debuffs while his second passive Anti-Human Order D increases the party's debuff success rate by 10% against all enemies save for Foreigners, but also throws a huge middle finger to Merlin by reducing his buff success rate by 20% if the two are in the same party. His first skill, Curtain of the Night EX, charges the party's NP gauge by 20% and also buffs their NP damage. His second skill, Morning Lark EX, greatly charges a selected ally's NP gauge and generates critical stars, but inflicts a delayed and unremovable debuff that decreases their NP gauge by 20% at the end of their turn. His third skill, End of the Dream EX, greatly boosts a selected ally's Buster performance, and massively amplifies any existing NP damage buffs they have, but inflicts a delayed and unremovable debuff that completely and permanently shuts them down at the end of their turn, removing all of their buffs, inflicting the Eternal Sleep debuff, and forces them to be targeted by the enemy. His Noble Phantasm, Wry Rhyme Goodfellow/Lie Like Vortigern, is an [=AoE=] Buster attack that removes the enemies' offensive buffs before dealing greatly increased damage to Lawful enemies in particular. However, any enemy that survives will be put to sleep and be granted an Invincibility buff, preventing them from attacking or being attacked.\\\
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* ConMan: Oberon has a reputation in Fairy Britain for borrowing money and not returning it. He brought millions in counterfeit money to an auction. This behavior led to his reputation as the King of Debts in Chaldea, in which the Queen of Sheba reveals in her interlude that he owes money to Beni-enma, Vlad III, Europa, Ishtar, Miss Crane, Nightingale, Kama, Meuneire and Karna. Shakespeare on the other hand faked the [=IOU=] just to screw with him.

to:

* ConMan: Oberon has a reputation in Fairy Britain for borrowing money and not returning it. He brought millions in counterfeit money to an auction. This behavior led to his reputation as the King of Debts in Chaldea, in which the Queen of Sheba reveals in her interlude that he owes money to Beni-enma, Vlad III, Europa, Ishtar, Miss Crane, Nightingale, Kama, Meuneire Meuniere and Karna. Shakespeare on the other hand faked the [=IOU=] just to screw with him.
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* SuddenSoundtrackStop: Upon finishing his Ascension Quest to unlock his third and final Ascensions , all music completely stops and the usual victory fanfare for a completed battle will not play. Nor will any background music play for the first time he is Ascended into his Oberon Vortigern form. Nasu stated this was deliberate on his blog.

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* SuddenSoundtrackStop: Upon finishing his Ascension Quest to unlock his third and final Ascensions , Ascensions, all music completely stops and the usual victory fanfare for a completed battle will not play. Nor will any background music play for the first time he is Ascended into his Oberon Vortigern form.form (or his final stage if the player has also levelled him to max). Nasu stated this was deliberate on his blog.
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* SuddenSoundtrackStop: Upon finishing his Ascension Quest to unlock his third and final Ascensions , all music completely stops and the usual victory fanfare for a completed battle will not play. Nor will any background music play for the first time he is Ascended into his Oberon Vortigern form. Nasu stated this was deliberate on his blog.
Is there an issue? Send a MessageReason:
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The king of the fairies debuts as the first Pretender, offering Buster Servants a level of support beyond their wildest dreams... and their last. He carries two unique passive skills; the first is A Midsummer Night's Dream EX, granting him immunity to all mental debuffs and Curse debuffs while his second passive Anti-Human Order D increases the party's debuff success rate by 10% against all enemies save for Foreigners, but also throws a huge middle finger to Merlin by reducing his buff success rate by 20% if the two are put together. His first skill, Curtain of the Night EX, charges the party's NP gauge by 20% and also buffs their NP damage. His second skill, Morning Lark EX, greatly charges a selected ally's NP gauge and generates critical stars, but inflicts a delayed and unremovable debuff that decreases their NP gauge by 20% at the end of their turn. His third skill, End of the Dream EX, greatly boosts a selected ally's Buster performance, and massively amplifies any existing NP damage buffs they have, but inflicts a delayed and unremovable debuff that completely and permanently shuts them down at the end of their turn, removing all of their buffs, inflicting the Eternal Sleep debuff, and forces them to be targeted by the enemy. His Noble Phantasm, Wry Rhyme Goodfellow/Lie Like Vortigern, is an [=AoE=] Buster attack that removes the enemies' offensive buffs before dealing greatly increased damage to Lawful enemies in particular. However, any enemy that survives will be put to sleep and be granted an Invincibility buff, preventing them from attacking or being attacked.\\\

to:

The king of the fairies debuts as the first Pretender, offering Buster Servants a level of support beyond their wildest dreams... and their last. He carries two unique passive skills; the first is A Midsummer Night's Dream EX, granting him immunity to all mental debuffs and Curse debuffs while his second passive Anti-Human Order D increases the party's debuff success rate by 10% against all enemies save for Foreigners, but also throws a huge middle finger to Merlin by reducing his buff success rate by 20% if the two are put together.in the same party. His first skill, Curtain of the Night EX, charges the party's NP gauge by 20% and also buffs their NP damage. His second skill, Morning Lark EX, greatly charges a selected ally's NP gauge and generates critical stars, but inflicts a delayed and unremovable debuff that decreases their NP gauge by 20% at the end of their turn. His third skill, End of the Dream EX, greatly boosts a selected ally's Buster performance, and massively amplifies any existing NP damage buffs they have, but inflicts a delayed and unremovable debuff that completely and permanently shuts them down at the end of their turn, removing all of their buffs, inflicting the Eternal Sleep debuff, and forces them to be targeted by the enemy. His Noble Phantasm, Wry Rhyme Goodfellow/Lie Like Vortigern, is an [=AoE=] Buster attack that removes the enemies' offensive buffs before dealing greatly increased damage to Lawful enemies in particular. However, any enemy that survives will be put to sleep and be granted an Invincibility buff, preventing them from attacking or being attacked.\\\
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* SitcomArchNemesis: While all Pretenders have some sort of antagonistic relationship with Casters, Oberon specifically has this with Shakespeare; as heard in his My Room line, Oberon attempted to poison Shakespeare by writing a heartfelt letter but laced the wax seal and the writing ink with poison (or so he claims). Shakespeare returns the favor in The Queen of Sheba's second interlude by faking his [=IOU=] and allowed her to take his flesh, clothes, hair and wings with a ''Theatre/TheMerchantofVenice'' reference, much to Oberon's chagrin.

to:

* SitcomArchNemesis: While all Pretenders have some sort of antagonistic relationship with Casters, Oberon specifically has this with Shakespeare; as heard in his My Room line, Oberon attempted to poison Shakespeare by writing a heartfelt letter but laced the wax seal and the writing ink with poison (or so he claims). Shakespeare returns the favor in The Queen of Sheba's second interlude by faking his [=IOU=] and allowed her to take his flesh, clothes, hair and wings with a ''Theatre/TheMerchantofVenice'' ''Theatre/TheMerchantOfVenice'' reference, much to Oberon's chagrin.
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* SitcomArchNemesis: While all Pretenders have some sort of antagonistic relationship with Casters, Oberon specifically has this with Shakespeare; as heard in his My Room line, Oberon attempted to poison Shakespeare by writing a heartfelt letter but laced the wax seal and the writing ink with poison (or so he claims). Shakespeare returns the favor in The Queen of Sheba's second interlude by faking his [=IOU=] and allowed her to take his flesh, clothes, hair and wings with a ''Literature/TheMerchantofVenice'' reference, much to Oberon's chagrin.

to:

* SitcomArchNemesis: While all Pretenders have some sort of antagonistic relationship with Casters, Oberon specifically has this with Shakespeare; as heard in his My Room line, Oberon attempted to poison Shakespeare by writing a heartfelt letter but laced the wax seal and the writing ink with poison (or so he claims). Shakespeare returns the favor in The Queen of Sheba's second interlude by faking his [=IOU=] and allowed her to take his flesh, clothes, hair and wings with a ''Literature/TheMerchantofVenice'' ''Theatre/TheMerchantofVenice'' reference, much to Oberon's chagrin.

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The king of the fairies debuts as the first Pretender, offering Buster Servants a level of support beyond their wildest dreams... and their last. He carries the unique passive skill A Midsummer Night's Dream EX, granting him immunity to all mental debuffs and Curse debuffs. His first skill, Curtain of the Night EX, charges the party's NP gauge by 20% and also buffs their NP damage. His second skill, Morning Lark EX, greatly charges a selected ally's NP gauge and generates critical stars, but inflicts a delayed and unremovable debuff that decreases their NP gauge by 20% at the end of their turn. His third skill, End of the Dream EX, greatly boosts a selected ally's Buster performance, and massively amplifies any existing NP damage buffs they have, but inflicts a delayed and unremovable debuff that completely and permanently shuts them down at the end of their turn, removing all of their buffs, inflicting the Eternal Sleep debuff, and forces them to be targeted by the enemy. His Noble Phantasm, Wry Rhyme Goodfellow/Lie Like Vortigern, is an [=AoE=] Buster attack that removes the enemies' offensive buffs before dealing greatly increased damage to Lawful enemies in particular. However, any enemy that survives will be put to sleep and be granted an Invincibility buff, preventing them from attacking or being attacked.\\\

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The king of the fairies debuts as the first Pretender, offering Buster Servants a level of support beyond their wildest dreams... and their last. He carries the two unique passive skill skills; the first is A Midsummer Night's Dream EX, granting him immunity to all mental debuffs and Curse debuffs.debuffs while his second passive Anti-Human Order D increases the party's debuff success rate by 10% against all enemies save for Foreigners, but also throws a huge middle finger to Merlin by reducing his buff success rate by 20% if the two are put together. His first skill, Curtain of the Night EX, charges the party's NP gauge by 20% and also buffs their NP damage. His second skill, Morning Lark EX, greatly charges a selected ally's NP gauge and generates critical stars, but inflicts a delayed and unremovable debuff that decreases their NP gauge by 20% at the end of their turn. His third skill, End of the Dream EX, greatly boosts a selected ally's Buster performance, and massively amplifies any existing NP damage buffs they have, but inflicts a delayed and unremovable debuff that completely and permanently shuts them down at the end of their turn, removing all of their buffs, inflicting the Eternal Sleep debuff, and forces them to be targeted by the enemy. His Noble Phantasm, Wry Rhyme Goodfellow/Lie Like Vortigern, is an [=AoE=] Buster attack that removes the enemies' offensive buffs before dealing greatly increased damage to Lawful enemies in particular. However, any enemy that survives will be put to sleep and be granted an Invincibility buff, preventing them from attacking or being attacked.\\\


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* SitcomArchNemesis: While all Pretenders have some sort of antagonistic relationship with Casters, Oberon specifically has this with Shakespeare; as heard in his My Room line, Oberon attempted to poison Shakespeare by writing a heartfelt letter but laced the wax seal and the writing ink with poison (or so he claims). Shakespeare returns the favor in The Queen of Sheba's second interlude by faking his [=IOU=] and allowed her to take his flesh, clothes, hair and wings with a ''Literature/TheMerchantofVenice'' reference, much to Oberon's chagrin.
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-->''"...What's this? Why did it turn out like this…? Ah, right. Until Human Order is stabilized, lies will come through as lies, or something like that? *sigh*… Alright, I give up. You're that kind of human. My name's Oberon. Since you called me, I'll give you a hand. Although from the bottom of my heart, it feels awful."''

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-->''"...->''"...What's this? Why did it turn out like this…? Ah, right. Until Human Order is stabilized, lies will come through as lies, or something like that? *sigh*… Alright, I give up. You're that kind of human. My name's Oberon. Since you called me, I'll give you a hand. Although from the bottom of my heart, it feels awful."''

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-->'''--Summon line before clearing Avalon le Fae'''

-->''"...What's this? Why did it turn out like this…? Ah, right. Until Human Order is stabilized, lies will come through as lies, or something like that? *sigh*… Alright, I give up. You're that kind of human. My name's Oberon. Since you called me, I'll give you a hand. Although from the bottom of my heart, it feels awful."''
-->'''--Summon line after clearing Avalon le Fae'''
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** The Queen of Sheba's 2nd Interlude reveals that the moment he came into Chaldea, he quickly became the King of Debts, owing money to Beni-enma, Vlad III, Europa, Ishtar, Miss Crane, Nightingale, Kama, Meuniere and Karna. We don't know how he managed to get them to lend him money (especially the likes of Ishtar, Kama and Meuniere), but unlike fellow debtor Izou, we never got to know what he did with his money.

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** The Queen of Sheba's 2nd Interlude reveals that the moment he came into Chaldea, he quickly became the King of Debts, owing money to Beni-enma, Vlad III, Europa, Ishtar, Miss Crane, Nightingale, Kama, Meuniere and Karna. We While we don't know how he managed to get them to lend him money (especially the likes of Ishtar, Kama and Meuniere), but unlike fellow debtor Izou, Izo we never got to know what he did with his money.money either.

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[[caption-width-right:350:[[labelnote: "Robin Goodfellow"]]\\
https://static.tvtropes.org/pmwiki/pub/images/smolberon_9.png[[/labelnote]]]]



* AscendedMeme: His SleepModeSize is both a CallBack to the April Fools' Day card art of Queen Medb (who has a connection to fairies) and the classic meme of [[https://imgur.com/a/tx7yy putting other Servants in her comfy looking cloak.]]

to:

* AscendedMeme: His SleepModeSize SuperDeformed version is both a CallBack to the April Fools' Day card art of Queen Medb (who has a connection to fairies) and the classic meme of [[https://imgur.com/a/tx7yy putting other Servants in her comfy looking cloak.]]



* TheDitz: By his own admission, he becomes less intelligent when in his SleepModeSize. A frustrated Da Vinci agrees with this.

to:

* TheDitz: By his own admission, he becomes less intelligent when in his SleepModeSize.SuperDeformed self. A frustrated Da Vinci agrees with this.



* NoodleIncident: His profile notes he has been incarnated three times, with his first life as the King of Mors and his third and current life as Oberon. Nothing is spoken about his second incarnation.

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* NoodleIncident: NoodleIncident:
**
His profile notes he has been incarnated three times, with his first life as the King of Mors and his third and current life as Oberon. Nothing is spoken about his second incarnation.incarnation.
** The Queen of Sheba's 2nd Interlude reveals that the moment he came into Chaldea, he quickly became the King of Debts, owing money to Beni-enma, Vlad III, Europa, Ishtar, Miss Crane, Nightingale, Kama, Meuniere and Karna. We don't know how he managed to get them to lend him money (especially the likes of Ishtar, Kama and Meuniere), but unlike fellow debtor Izou, we never got to know what he did with his money.



* SleepModeSize: He can shrink down to the size of a moth, represented in his art as a chibi version. He calls this his "Robin Goodfellow" form. His Extra Attack animation shows that he can still fight while in this form. While he uses this form to fly fast enough to cover the entirety of Faerie Britain in 2 days, it also turns him into a slight airhead.


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* SuperDeformed: He can shrink down to the size of a moth, represented in his art as a chibi version. He calls this his "Robin Goodfellow" form. His Extra Attack animation shows that he can still fight while in this form. While he uses this form to fly fast enough to cover the entirety of Faerie Britain in 2 days, it also turns him into a slight airhead.
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[[WMG:[[center: [- ''VideoGame/FateGrandOrder'' '''[[Characters/FateGrandOrder Main Characters Index]]'''\\
''Three Knight Classes:'' [[Characters/FateGrandOrderSabers Sabers]] ([[Characters/FateGrandOrderSabersAToF A-F]] | [[Characters/FateGrandOrderSabersGToM G-M]] | [[Characters/FateGrandOrderSabersNToZ N-Z]]) | [[Characters/FateGrandOrderArchers Archers]] ([[Characters/FateGrandOrderArchersAToC A-C]] | [[Characters/FateGrandOrderArchersDToM D-M]] | [[Characters/FateGrandOrderArchersNToZ N-Z]]) | [[Characters/FateGrandOrderLancers Lancers]] ([[Characters/FateGrandOrderLancersAToF A-F]] | [[Characters/FateGrandOrderLancersGToM G-M]] | [[Characters/FateGrandOrderLancersNToZ N-Z]])\\
''Four Cavalry Classes:'' [[Characters/FateGrandOrderRiders Riders]] ([[Characters/FateGrandOrderRidersAToF A-F]] | [[Characters/FateGrandOrderRidersGToM G-M]] | [[Characters/FateGrandOrderRidersNToZ N-Z]]) | [[Characters/FateGrandOrderCasters Casters]] ([[Characters/FateGrandOrderCastersAToF A-F]] | [[Characters/FateGrandOrderCastersGToM G-M]] | [[Characters/FateGrandOrderMerlin Merlin]] | [[Characters/FateGrandOrderCastersNToZ N-Z]]) | [[Characters/FateGrandOrderAssassins Assassins]] ([[Characters/FateGrandOrderAssassinsAToF A-F]] | [[Characters/FateGrandOrderAssassinsGToM G-M]] | [[Characters/FateGrandOrderAssassinsNToZ N-Z]]) | [[Characters/FateGrandOrderBerserkers Berserkers]] ([[Characters/FateGrandOrderBerserkersAToF A-F]] | [[Characters/FateGrandOrderBerserkersGToM G-M]] | [[Characters/FateGrandOrderMorgan Morgan]] | [[Characters/FateGrandOrderBerserkersNToZ N-Z]])\\
''Extra Classes:'' [[Characters/FateGrandOrderRulers Rulers]] | [[Characters/FateGrandOrderAvengers Avengers]] | [[Characters/FateGrandOrderMoonCancers Moon Cancers]] | [[Characters/FateGrandOrderAlterEgos Alter Egos]] | [[Characters/FateGrandOrderForeigners Foreigners]] | [[Characters/FateGrandOrderPretenders Pretenders]] ('''Oberon''')\\
''Unplayable and Arcade Exclusive:'' [[Characters/FateGrandOrderUnplayable Unplayable]] ([[Characters/FateGrandOrderBeasts Beasts]] | [[Characters/FateGrandOrderBeastI Beast I]]) | [[Characters/FateGrandOrderArcadeExclusive Arcade Exclusive]]\\
''Other Notable Characters:'' [[Characters/FateGrandOrderChaldeaSecurityOrganization Chaldea Security Organization]] ([[Characters/FateGrandOrderProtagonist Protagonist]] | [[Characters/FateGrandOrderMashKyrielight Mash Kyrielight]]) | [[Characters/FateGrandOrderVillains Villains]] ([[Characters/FateGrandOrderObserverOnTimelessTempleVillains Observer on Timeless Temple Villains]] | [[Characters/FateGrandOrderEpicOfRemnantVillains Epic of Remnant Villains]] | [[Characters/FateGrandOrderCosmosInTheLostbeltVillains Cosmos in the Lostbelt Villains]] ([[Characters/FateGrandOrderCrypters Crypters]] | [[Characters/FateGrandOrderForeignGodAndForces Foreign God and Forces]] | [[Characters/FateGrandOrderLostbeltKings Lostbelt Kings]]) | [[Characters/FateGrandOrderEventVillains Event Villains]] | [[Characters/FateGrandOrderInterludeVillains Interlude Villains]]) | [[Characters/FateGrandOrderOtherCharacters Other Characters]] ]]-]]]

!!Due to the nature of this servant, this page has been marked as Administrivia/SpoilersOff.

!!Oberon Vortigern
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/2800100a1.png]]
[[caption-width-right:350:The Faerie King of the Abyss]]
[[caption-width-right:350:[[labelnote:Second Ascension]]\\
https://static.tvtropes.org/pmwiki/pub/images/2800100a2.png[[/labelnote]]]]
[[caption-width-right:350:[[labelnote:Third Ascension]]\\
https://static.tvtropes.org/pmwiki/pub/images/2800100b1.png[[/labelnote]]]]
[[caption-width-right:350:[[labelnote:Final Ascension]]\\
https://static.tvtropes.org/pmwiki/pub/images/s316_stage4_full.png[[/labelnote]]]]
[[caption-width-right:350:[[labelnote:The Hollow Worm]]\\
https://static.tvtropes.org/pmwiki/pub/images/back124300_1344_626.png[[/labelnote]]]]
->'''Rarity:''' SSR (5*)\\
'''ID:''' No. 316\\
'''Command Cards:''' QQABB; (B)\\
'''Alignment:''' ChaoticEvil\\
'''Attribute:''' Earth\\
'''Origin:''' Literature (''Theatre/AMidsummerNightsDream''), England (Myth/ArthurianLegend)\\
'''First appearance:''' ''Fate/Grand Order'' (Oberon), ''Garden of Avalon'' (Vortigern)\\
'''Illustrated by''': Chica Umino\\
'''Voiced by:''' Creator/ToshiyukiToyonaga

->''"Hey there, so this is Chaldea, then? I've heard about it but it really gives you the chills once you're here in person! Oops, introductions, introductions. I am Oberon. Oberon, the Fairy King. As you can see, I'm just playing at being king. But I'm quite good at breaking the ice. I'll do what little I can to be of use to you... I'll be in your care, then?"''

The king of the fairies in medieval and Renaissance European literature, most famous today for his role in William Shakespeare's ''Theatre/AMidsummerNightsDream''. According to Oberon, his wife in Shakespeare's play, Titania, is a purely fictional creation of Shakespeare's.\\\

All that was described above are all but lies when it comes to this Oberon. He is not a Servant from Proper Human History, but a doomsday device, created by the Lostbelt Britain consumed by Sefar, to destroy Faerie Britain out of disgust for its inhabitants. As the will of the isle personified, he naturally is named Vortigern, a name shared with the uncle of King Arthur, the first incarnated will of Britain and personification of the white dragon who tried to reject the incoming Age of Man in Proper Human History. He was first born 1,000 years ago as the King of Mors when he tried to bring an end to the land of fairies in the Great Calamity, but was slain after a decades-long war. He was reborn during the present day in the Autumn Forest of Wales, where the outsider fairies claimed him as their king, making him "Oberon".\\\

The king of the fairies debuts as the first Pretender, offering Buster Servants a level of support beyond their wildest dreams... and their last. He carries the unique passive skill A Midsummer Night's Dream EX, granting him immunity to all mental debuffs and Curse debuffs. His first skill, Curtain of the Night EX, charges the party's NP gauge by 20% and also buffs their NP damage. His second skill, Morning Lark EX, greatly charges a selected ally's NP gauge and generates critical stars, but inflicts a delayed and unremovable debuff that decreases their NP gauge by 20% at the end of their turn. His third skill, End of the Dream EX, greatly boosts a selected ally's Buster performance, and massively amplifies any existing NP damage buffs they have, but inflicts a delayed and unremovable debuff that completely and permanently shuts them down at the end of their turn, removing all of their buffs, inflicting the Eternal Sleep debuff, and forces them to be targeted by the enemy. His Noble Phantasm, Wry Rhyme Goodfellow/Lie Like Vortigern, is an [=AoE=] Buster attack that removes the enemies' offensive buffs before dealing greatly increased damage to Lawful enemies in particular. However, any enemy that survives will be put to sleep and be granted an Invincibility buff, preventing them from attacking or being attacked.\\\

He debuts in "Lostbelt No. 6: Fairy Round Table Domain, Avalon le Fae", serving as an ally for the first 2 parts and eventually the true antagonist and FinalBoss in the Collapse Arc as he is the one behind the threat of the planet collapsing that forced Chaldea to enter the Lostbelt. His playable version was eventually released as a Limited Servant during the Lostbelt 6 Conclusion Campaign, getting the honor of being the 1st Pretender in the game and the franchise as a whole in the process.
----
[[foldercontrol]]

[[folder:A-G]]
* AffablyEvil: Despite [[BlueAndOrangeMorality his oddities as Oberon]] and the sheer [[OmnicidalManiac horrific brutality]] of him as Vortigern, he sincerely remains polite all the way up to and including his demise towards Chaldea and [[GracefulLoser even wishes them luck]] when he's finally beaten by them, making him miles more genuine than [[UngratefulBastard the significant majority of the fairies]] of the Lostbelt.
* AlternateSelf: Played with. This "Vortigern" and Vortigern of Proper Human History are both technically embodiments of their Britain's will who take monstrous forms relating to dragons and darkness, but this "Vortigern" as a person is not related to Altria or Morgan like the Proper Human History version was. However...
* AmbiguousSituation: ...The story never spells out exactly if the Vortigern summoned in the Lostbelt is truly a "Vortigern" unrelated to his Proper Human History self. Though it is stated multiple times he is a Servant born of Faerie Britain and not Proper Human History, there has been so much wire-crossing between the alternating histories in Faerie Britain due to Morgan's meddling that it's entirely possible PHH Vortigern got caught in the mess and altered like Kadoc's version of Anastasia, not helped by the Welsh Faeries potentially altering him a ''second'' time into being Oberon. While the possibility definitely exists, it's never explicitly stated, and given [[CompulsiveLiar Oberon]] [[ConsummateLiar Vortigern's nature]] the ambiguity is likely intentional.
* AndIMustScream: When Oberon was first born, he was in such a weak state that he couldn't even close his eyes and sleep. For several months, he lied there unable to do more than stare at the insect faeries gathered around him, stewing in his own hatred.
** His final fate after his defeat by Chaldea and Altria Avalon: he's weakened enough that he ends up falling off the Storm Border into the endless tunnels that makes up the Hollow Worm. The keyword being ''endless''; Oberon will never, '''EVER''', hit the bottom. He is unable to escape from it either. Despite the sheer horror of it all, Oberon himself is okay with his predicament, since he DID fulfill his purpose of destroying Faerie Britain in the end. He's only saddened when he realizes that he won't be able to see PHH for himself, noting that its sky is actually rather beautiful.
* AnimalMotifs:
** Moths. He has moth wings, a moth companion named Blanca, and sometimes puts on a cap with moth antennae accessories.
** When his true self is revealed, the motif swaps over to dragonflies as a play on how he's both an insect fairy and draconic as Oberon Vortigern. He has dragonfly wings, and transforms into a massive dragonfly for his Noble Phantasm.
** In a bit of a carryover from his Proper Human History counterpart, Dragons, in a roundabout way. His Human History self is the incarnation of White Dragon of Britain, destined to destroy human civilization on it. This Lostbelt incarnation has ''dragon''fly wings, and Lie Like Vortigern transforms him into a huge worm... or in other words, a huge ''wyrm''.
* AnthropomorphicPersonification: Both Vortigerns were born as a method for Britain to self-destruct, but if Proper Human History Vortigern was Britain's will to die gloriously in the Age of Gods rather than fading in the Age of Man, then Oberon Vortigern was Lostbelt Britain's desire to punish the faeries living on Faerie Britain for their sins and how they betrayed Cernunnos to build it. Vortigern says he would never have been born to destroy the land if Morgan hadn't tried so hard to save it against her given purpose.
* ArchEnemy: Much like how Proper Human History Vortigern considers Altria as his greatest obstacle in preserving the Age of Gods and killing the humans of Britain, this Vortigern regards Morgan, who tries to preserve Faerie Britain against the wishes of the island itself, as his enemy, especially during his time as King of the Mors. Likewise, Morgan also sees him as a personal threat, and expresses her displeasure to him in a voice line. That being said, see ItsPersonal below.
* ArcVillain: Ultimately the real antagonist behind the sixth Lostbelt, as he was secretly behind agitating the MeleeATrois between the factions in hopes of destroying the Lostbelt so he could escape to destroy Proper Human History itself. Indeed, it's neither Morgan nor Cernunnos but rather Vortigern that is the true nature of the collapse Sion detected, with the SHEBA lens predicting that he will emerge victorious, suck up Faerie Britain into the Hollow Worm, break free of the British Lostbelt, and then repeat the process with the rest of the planet.
* AscendedMeme: His SleepModeSize is both a CallBack to the April Fools' Day card art of Queen Medb (who has a connection to fairies) and the classic meme of [[https://imgur.com/a/tx7yy putting other Servants in her comfy looking cloak.]]
* AttackItsWeakPoint: Despite the Hollow Worm’s enormous size and destructive potential, it requires Vortigern to direct its movements and actually suck in things through its mouth into its BottomlessPit insides. Ergo, if he is neutralized, then the Worm will stop moving and cease to be a threat.
* TheBadGuyWins: In the absolute MeleeATrois of different villains that is the Faerie Britain Lostbelt, Oberon Vortigern's purpose of wiping it out ends up trumping all of the other villains, with the Hollow Worm being seen tearing the island to pieces. The only reason he really "lost" is because his plans included destroying Proper Human History as well. To be more precise, his "Vortigern" half's desire to wipe out the British Lostbelt succeeds, but his "Oberon" half's desire to wipe out the Proper Human History fails. One of his Third Ascension My Room lines has him gleefully rub this fact in the faces of the Lostbelt Kings.
-->''The Lostbelt Kings? Of course I respect them! After all, each and every one of them yielded to Chaldea, did they not? Humans are amazing! Just as I expected of the kings...ah, but don't lump me in with that bunch, okay? Those guys are miserable losers. I, on the other hand, am a winner who has fulfilled his purpose.''
* BadassCape:
** In his second ascension, his cape is made from his own wings. It briefly transforms back into his wings upon using his second skill.
** [[https://youtu.be/GdWk9uNEQEg?t=392 As can be seen in his NP]] for his third ascension, his cloak appears to be made from butterfly wings. Or to be more appropriate, ''ripped off fairy wings''. It'd be incredibly fitting considering his role.
* BattleThemeMusic: [[https://youtu.be/xrM-KutDyTM Finale: Fairy Domain Round Table - O. Vortigern]] plays when you, Mash and Altria Caster have to fight him. Parts of it also plays when he uses his second NP 'Lie Like Vortigern'.
* BeautyIsBad: The fairies mistake Vortigern for Oberon due to how pretty he is, but by the end of the Lostbelt it's revealed he's the last and most destructive Great Calamity, the Insect of the Abyss.
* BecomingTheMask:
** Downplayed. After recovering his identity, Vortigern settles into continuing the guise of Oberon to deceive Chaldea and achieve his ends, but he ''does'' still like them. Not enough to avoid killing them, however.
** He also feels this way to Altria Caster. He only approached her because she was the Child of Prophecy destined to overthrow Morgan and taught her Magecraft to speed his plans up, but he becomes fond of her in his own way by the end of it all.
* BigCreepyCrawlies: When he's acting as Oberon, he usually sticks to butterflies, moths, and other "cute" and relatively normal-sized insects. When the gig is up, however, Vortigern pulls out all the stops and starts summoning all kinds of bugs, including things like beetles, wasps, giant centipedes, and a pillbug the size of a small car. And of course there's the Hollow Worm itself, an "insect" big enough to shatter an entire country with its movements and wingbeats.
* {{Bishonen}}: Despite being unrelated to the Pendragons unlike his AlternateSelf, this Vortigern still has natural good looks. This is actually what caused the Welsh fairies to accidentally brainwash him, as he was so pretty that they were convinced he had to be a prince of some sort, thrusting the identity of Oberon on him.
* BossSubtitles: The final battle against him introduces him as '''Insect of the Abyss''': '''OBERON'''.
* BottomlessPit: His Hollow Worm is the concept of falling endlessly into the pit Cernunnos was sleeping in, the true nature of the last Great Calamity, the Insect of the Abyss. In practice it acts like a mobile black hole that sucks up everything into it, and it can be seen sucking up the shattered remnants of Faerie Britain on the chapter map once it's summoned; the battle against Oberon Vortigern takes place inside the Worm itself as Chaldea falls inside it even as they're still fighting. Its power is such that it can suck up the entire planet, this being the collapse predicted by Sion which Chaldea is trying to prevent. Holmes analyzes being inside the Hollow Worm is in some ways even worse than inside a real black hole, since there is literally no way to escape from the inside - Chaldea only escapes because Melusine was able to force open a path from the outside.
* ButForMeItWasTuesday: Why did Oberon have the Fang Clan wipe out the Wing Clan, leaving Muryan as its sole survivor? As he chillingly tells Muryan after running her through with his fist:
---> ''"I really didn't have a reason. I was just having a bad day"''.
* ColorMotif: Oberon initially presents himself with warm and light colors in his attacks, Noble Phantasm, and outfits, indicating a friendly nature as an ally to the party, but he switches over to black and cold blue when he becomes antagonistic.
* CombatPragmatist: Will kill his enemies in their sleep for an easy victory.
* CompositeCharacter: His character combines the mythical fairy king Oberon from William Shakespeare's ''A Midsummer's Night's Dream'' and Vortigern from the Arthurian Myths.
** The Oberon aspect of him is treated as fictional in-universe (as written by "William Shakespeare") but it serves as the basis for the false identity that was forced on him at his birth by the fairies that mistook him for a prince after his birth. Addtionally, there was a play named ''Vortigern and Rowena'' that was initially promoted as a lost Shakespearan play but ultimately revealed to be a hoax, allowing a basis for the two characters to be combined.
%%** His identity as Vortigern serves as another bridge, as the legend connects him to Merlin and Arthurian Legend. In said legend, Vortigern intends to sacrifice a young Merlin (Called "Myrddin Emrys") to build his fortress but is instead given a prophecy of the future of Britain and the coming of Arthur instead. After being instructed to build his fortress elsewhere, Vortigern spares his life and follows the young boys advice, which would eventually lead to his death at the hands of Uther and Ambrosius who attacked him out of revenge for his murder of their brother, the former king, thus ensuring the prophecy of the future of Britain would be fulfilled. While this myth isn't fully told in the ''Fate/Grand Order'' proper, it serves as a meta way to explain Vortigern's hatred of Merlin.
%%Besides the obvious with Oberon; Vortigern on his own is actually a multitude of ideas brought together: first there's his namesake, Gwrtheyrn[[note]]the proper Welsh name for Vortigern[[/note]], an enigmatic tyrant who invited the Saxons into Britain who historically was considered an ancestor to Uther. Then, the basis of his actual character is heavily rooted in Aurelius Ambrosius, an originally separate, much earlier figure that eventually evolved into Uther's actual brother as traditional Arthurian legend grew — which also establishes the reason why Vortigern, like Morgan was later revealed to be, was an incarnation of Britain itself as his original legend predates the modern understanding of Arthurian myth. Subsequently, Aurelius is also considered to be the prototypical founder and holder of the "Pendragon" name which Uther would later appropriate for himself after the elder Aurelius had passed away, establishing [[IntergenerationalRivalry legitimacy]] as to why he becomes Altria's ultimate ArchEnemy in the series over the classical examples of opponents faced by King Arthur such as Mordred or Morgan le Fay. Finally, he also has a literary connection to Merlin himself as well, as some of the earlier myths (such as the tale of Vortigern and the Dragons that becomes the symbolic conflict between Vortigern and Altria in ''Garden of Avalon'') are actually [[SadlyMythtaken originally attributed to Aurelius]] as the young prophet described in the story brought forth to be sacrificed in the aforementioned tale rather than Merlin, among other connections that made Aurelius a wise, noble mentor figure before he was later replaced with Merlin.
* CommonalityConnection: As Oberon, he invites Nursery Rhyme to spend time with him as they're both fictional stories brought to life. However, according to Nasu [[https://forums.nrvnqsr.com/showthread.php/5875-The-BAMBOO-BROOM-DIARY-%28Nasu-and-Takeuchi-blog%29?p=3134011#post3134011 on his blog]], Nursery doesn't feel the same way.
* ConfusionFu: According to the ''Storm Border'''s analysis of his Spirit Origin as Oberon, his class constantly changes by the second which is [[GameplayAndStoryIntegration reflected each time he's used as story support]] in Lostbelt 6, including Caster, Archer, and Rider. His class reveal settles this by revealing that he's actually ''none'' of them (including his default 'Ruler' class) and is a completely new class, Pretender.
* ConMan: Oberon has a reputation in Fairy Britain for borrowing money and not returning it. He brought millions in counterfeit money to an auction. This behavior led to his reputation as the King of Debts in Chaldea, in which the Queen of Sheba reveals in her interlude that he owes money to Beni-enma, Vlad III, Europa, Ishtar, Miss Crane, Nightingale, Kama, Meuneire and Karna. Shakespeare on the other hand faked the [=IOU=] just to screw with him.
** During his (public) Valentine's scene, Oberon decides to take advantage of stories such as ''Huon de Bordeaux'' which depicts him as Caesar's son to get him to give him money in the context of 'child support'. Caesar's [[ThisIsGonnaSuck expression]] indicates his displeasure about it.
* ConsummateLiar: Combined with CompulsiveLiar. Lies are a part of Oberon's very being, something he can't escape; his words and deeds have been labelled in human history as lies regardless of what he does, and as a result a curse has been engraved into his nature since birth that basically states "nothing about you is true, and nothing you say is true", represented by his A Midsummer Night's Dream skill. His identity as Oberon is all a lie created by fairies. His name of Vortigern while closer to the truth is misleading. He either tells quick lies for short purpose or orchestrates events to serve a greater purpose. Even as a playable Servant, his appearance as Oberon seems to be him pretending to be Oberon before his real identity is revealed. It is hard to tell where his lies end and the truth actually begins, with you requiring to doubt him several times across the entire chapter to unlock a special scene where he ''has'' to tell you the truth for calling him out as a liar.
* DeathOrGloryAttack: Casting [[PowerAtAPrice The End Of The Dream EX]] on any Servant (optimally a Buster Servant) is this in a nutshell, since they're trading the chance for a huge damage bonus on their NP for certain death at the hands of any enemy that's left. His own NP is a smaller version of this in that it grants Invulnerability to enemies after dealing damage, meaning that you better hope that the attack actually kills them or you'll end up wasting a turn.
* DidYouJustFlipOffCthulhu: Oberon straight up calls Koyanskaya disgusting during their first meeting.
* DifficultButAwesome: Using Oberon as a support Servant has you asking "Do I want to sacrifice damage for additional NP charge?". Besides the difficulty presented by [[DeathOrGloryAttack End of the Dream]], Morning Lark gives a delayed debuff that drains 20% of the target's NP gauge at the end of the turn, meaning that he has a hard time settling for Quick and Arts looping due to him hindering their NP gauges. However, he is the only Servant in the game who can give out ''70%'' NP charge when needed, unlocking more options for Servants who are just short of a full NP gauge with other supports. The application for Oberon is to be a ''third'' support to cap out any needed NP gauge needs or act as a second attacker so that the main attacker doesn't need to use their Noble Phantasm as many times. Not to mention that his Noble Phantasm applies invincibility to all of the enemies so if for some reason Oberon is unable to finish those enemies off with his NP and you lack a Servant/CE that can Pierce Invincibility within Oberon's party, you have to wait another turn to finish them off.
* TheDitz: By his own admission, he becomes less intelligent when in his SleepModeSize. A frustrated Da Vinci agrees with this.
* DraconicAbomination: A major trait shared by Vortigern of Human History Britain and Vortigern of Faerie Britain is their draconic trait. The former is the personification of the white dragon of Britain, and transforms into a dragon himself; while the latter is considered a dragon due to his connection with the Hollow Worm. However, the Worm is best described as being an ''abstract monstrosity'' the size of Faerie Britain (1,440 km long to be exact), resembling a gigantic maelstrom of insects and curses with giant wings that look more like roots in the vague shape of a cross between a dragon and dragonfly, being the materialization of the bottomless pit Cernunnos was trapped in that tries to suck the world into itself. It gets to the point that he is one of a handful of Servants ''not'' Weak to Enuma Elish.
* DramaticIrony: Oberon spends much of Avalon le Fae soothing the Protagonist's trauma from pruning the other Lostbelts. Oberon is also ''immensely'' resentful of the tales of the Lostbelts being cut short by the Protagonist's pruning of them. If Oberon wasn't cursed to be an embodiment of lies and didn't [[BecomingTheMask come to like]] [[PetTheDog the protagonist]] to an extent, he would '''smash''' the protagonist's TraumaButton to hell and back and then smash it ''again'' for good measure.
* EarlyBirdCameo: First appeared in the second ''Cosmos in the Lostbelt'' opening, framed in shadow and giving a SlasherSmile.
* EnergyAbsorption: Another trait shared by both Proper Human History Vortigern and Faerie Britain Vortigern is their status as a light devourer. Proper History Vortigern can devour light from Excalibur-class holy swords to the point they temporarily become ordinary blades, while Altria Avalon states her holy sword is both a source of nourishment and a poisonous hazard for Oberon Vortigern; its light can feed him, but wounds caused by the blade will impair him.
* EvenEvilHasLovedOnes: As Vortigern, he still cares about the Welsh faeries who took care of him as Oberon. In an optional scene after his boss battle he visits them in a dream even though Barghest already has killed all of them, and chats with none of his usual vitriol.
* EvilCostumeSwitch: Ditches his kingly garbs by his third ascension for a more dark palette.
* EvilSoundsDeep: As Vortigern, Oberon's voice deepens to the point where some of his lines sound like growling.
* FinalBoss: He's the last antagonist and boss faced in the sixth Lostbelt, but only makes his move after Morgan and Cernunnos have been defeated, and must be stopped before he escapes outside the Lostbelt and destroys the entire world. It crosses over into PostFinalBoss territory, as while he's a world-destroying threat like Cernunnos he requires far less effort to defeat both in the narrative and in gameplay, and lasts only a single section before he's defeated.
* {{Foil}}: Both Oberon and Merlin are inhabitants of the "Dream World" who share similar skills - Veil of the Night vs. Dreamlike Charisma, End of a Dream vs Hero Creation. But the thing that greatly contrasts the two is their attitude in regards to stories. Merlin's LackOfEmpathy means he has no real attachment to stories and has no problem carrying out tasks to get the conclusion he wants to see. Oberon on the other hand finds all stories valuable, which includes the stories told in the Lostbelts, and detests Proper Human History for moving on from stories that are already over, no matter how much they changed them. How they grant support also contrasts with each other, as while they're both highly versatile and functional in different teams, Merlin's support is slow but constant, while Oberon offers quick, high damage on Noble Phantasms but high drawbacks if the battle persists after you use those skills. Their Noble Phantasms are also similar in appearance, granting the image of idyllic scenery, but Garden of Avalon offers constant Health, NP and Star Regen, while Wry Rhyme Goodfellow deals high damage, places your foes asleep and makes them invincible for a turn. Finally, their appearances both place them as pretty boys, but Merlin is predominantly white while Oberon's true form, Vortigern, is predominantly black, which is more evident in the "One Night's Dream" Craft Essence.
* ForcedSleep: His Noble Phantasm inflicts Sleep upon his enemies. To prevent them from waking up early, an Invincibility buff is applied to them (explained away by flavor text as putting them in a dream realm), though servants with Invincibility Pierce can damage them at the cost of waking them up. In addition, his third skill induces an unremovable sleep debuff on an ally after giving them a very potent damage buff. He does this to Chaldea in the finale after he swallows the ''Storm Border'' with his Insect of the Abyss. The protagonist is the only one who stays awake thanks to Baobhan Sith earlier usage of Morgan's Garden of Dejection which also puts victims to sleep.
* {{Foreshadowing}}: Oberon has a lot going on which eventually makes sense when he reveals himself:
** During the scene with [[YourHeartsDesire Dracae]], Oberon's desire is responded to by a floating sign in the river that says "Out of magical energy". It's played off for humor in the moment, but given the later revelations of [[OmnicidalManiac his true goal]], it's makes a lot of sense just ''why'' Dracae couldn't create a manifestation of his wants even with the power of a Nightcall at her disposal.
** In the beginning of part 2 of Lostbelt No. 6, Goredolf mentions how Morgan le Fay of Proper Human History was actually the second fairy embodiment of Britain after her uncle Vortigern. Muryan commented earlier that Oberon does not resemble any fairy in the Lostbelt, hinting by fairy standards that he's extremely unusual.
** Muryan realizes right before she dies that the Calamities are the will of Britain itself trying to exterminate the faeries, implying either Morgan or Vortigern is the mastermind. Since Lostbelt Morgan was working to save Faerie Britain from the Calamities, that leaves Vortigern as the only option.
** When he narrates how he first manifested in the Lostbelt, he's seen with the dragonfly wings of his true form rather than the butterfly wings his Oberon identity has.
** In some of his dialogue, Oberon would refer to himself [[ThirdPersonPerson in third person]], particularly when he talks about his appearances in literature, myth and especially his most well-known theatre play. As the story goes on this lessens... as though he's an actor who's merging with his role.
** After Chaldea drive back the Black Dogs in the Welsh Forest, the fairies there cheer in their incomprehensible language. At this point, pay attention to the subtitles in the insect fairies' dialogue. Coupled with their comments about Oberon's thoughts, if it weren't for Chaldea not being able to understand the language of the insect fairies they could have blown Oberon's cover on his true identity.
--> '''Insect Fairies''': ''"Bortegan, Bortegan!" "Oberon will be sad, Oberon will be happy! Can rely on friends!"''
** After the Welsh forest is burnt down, he takes off by himself after one of the surviving enemy commanders. The commander is attacked by a dark corruptive substance that he finds familiarity with by citing the Mors Wars and that it's something Morgan would be familiar with before being consumed by it. As it turns out, Vortigern was summoned once before into the Lostbelt as the Great Calamity of 1000 AD, the King of the Mors that attempted to destroy Faerie Britain with an army of such monsters in the same-named wars.
** Chaldea's first visit to Londinium reveals a mural of Cernunnos and the six fairies called ''Insect of the Abyss'', with what appears to be a dragon skull beneath the pit Cernunnos is standing in. It's initially mistaken as a depiction of Faerie Britain's creation with the dragon skull representing Albion's corpse being used to build Britain's northern half, until Da Vinci reveals it actually depicts a possible ''future'', namely a Calamity that could escape from the Lostbelt and lead to the collapse they're trying to prevent. This mural actually refers to Vortigern, who is associated with dragons, and the skull is the Hollow Worm that is the weaponized concept of falling into the Great Pit Cernunnos was sleeping in.
** PHH Vortigern was described as "a hole in the world." In the British Lostbelt there happens to be the Great Pit, a massive hole in the land itself, which leads to the space of another world. Once Cernunnos is destroyed and the Great Pit unplugged, the Insect of the Abyss emerges which is described as "a hole in the world" as well, with the space being the inside of the Insect where no Heroic Spirit has ever existed.
** The entire story chapter has multiple unskippable dialogue options, most if not all of them having the option to either trust Oberon or cast doubt on him, making it clear that there is ''something'' up with him. In fact, picking enough of the "doubt Oberon" options will unlock special red dialogue options when Oberon Vortigern reveals himself that get automatically selected, leading to an optional scene with you and Oberon a little bit later.
* TheGadfly: Particularly likes to mess with Altria Caster because he can. A fair number of his My Room lines are also general insults towards other Servants.
* GaiasVengeance: As a Great Calamity, Vortigern is one incarnation of Faerie Britain's hatred towards its inhabitants, born as a method for the island to commit suicide by having him destroy it. He has a special status compared to the other Calamities, as Britain goes as far as to incarnate him ''twice'' to fulfill this purpose.
* GiantFlyer: Despite being absolutely colossal with its 1,440 km body length and equally enormous wingspan, the Hollow Worm can actually fly unhindered by gravity.
* GlassCannon: In gameplay, Oberon Vortigern has no kind of defense buffs whatsoever, but his absurd NP Charge and potent damage boost make him very viable for huge damage.
* GracefulLoser: Takes his loss to Chaldea much better than his PHH counterpart did to Altria and wishes them good fortune in their journey ahead.
* GoodWingsEvilWings: As "Oberon", he has colorful moth-like wings, lending to his false image of a benevolent fairy king. As Vortigern, his wings are dragonfly-like, fitting better into his dark attire.
[[/folder]]

[[folder:H-Z]]
* HatesEveryoneEqually: Vortigern says he dislikes "everything." Like everything else about him, it's hard to tell if he's lying or not.
* HeinzHybrid: Goredolf states Proper Human History Vortigern is a Fae embodiment of Britain's will (specifically to preserve its Mysteries and destroy its humans); he is also human in flesh and blood who then transforms into a dragon at the end of his life. ''This'' Vortigern is also an incarnation of Britain's will (specifically to destroy the Faeries and their sins), a dragon and a Faerie at once; but it's unclear if he has been a Faerie since the moment he is summoned into Faerie Britain as the Great Calamity King of the Mors, or if he only becomes one after he is resummoned in Servant format.
* HellIsThatNoise: Occasionally when using his Noble Phantasm as Vortigern, the Hollow Worm may bellow out an incredibly frightening roar as it swallows the enemies whole.
* HellishPupils: It's hard to see in his portraits, but an image of him in Lostbelt No. 6 Section 25 shows he has these as Vortigern. They are also shown in the second ''Cosmos in the Lostbelt'' opening with his reflection in water.
* HoistByHisOwnPetard:
** There's nothing stopping a player from casting [[PowerAtAPrice The End Of The Dream EX]] on Oberon himself (in fact, he outright benefits from both of its effects), turning him into a walking target.
** In his own Valentine's scene, if you choose to see him alone, he wonders how you found him and as you mention "Merlin Magecraft", he sounds annoyed, referring to Altria Caster and denoting "Who taught you that scam magecraft". Given he called himself "Merlin" when telepathically speaking to her and being responsible for teaching her Magecraft, he's naturally taught Altria Caster that magecraft and is annoyed that it's used against him. You can even rub it in his face by offering to show him a hand mirror.
---> '''Oberon Vortigern''': "'Merlin's Magecraft', my ass. Who taught her that scam magecraft?"
** In the story proper, his final defeat has him trapped within his own Insect of the Abyss familiar, unable to escape unless he's saved from the "outside" and even that has a very limited window before the Abyss closes in on itself. By the time Chaldea is able to escape with Albion's help, it's already too late for Oberon and he "falls" forever.
* HumanoidAbomination: His Servant form as Oberon looks ordinary on the surface, but the ''Storm Border'''s analysis reveals just how strange he really is. His Spirit Origin is in a state of constantly fluctuation, doesn't belong to Proper Human History, and is neither human nor faerie nor any sort of life-form previously encountered though Saber Altria Alter firmly identifies him as draconic in nature. As Da Vinci puts it, "he's an invisible man who's there and not there at the same time," just like how Vortigern of Proper Human History was "a hole in the world". It's also implied that he's nothing more than a terminal housing the mind of the Insect of the Abyss, and both of them are two halves of the same being.
* HumansAreTheRealMonsters: Oberon believes that humans, specifically of Proper Human History, have [[SecretlySelfish no place to judge the stories of the Lostbelts and prune them from existence to save their own world]], and he and Vortigern are unified to such a degree that when Oberon's will decides to push Vortigern towards destroying Proper Human History after accomplishing his original goal of destroying the Lostbelt, he doesn't need much convincing to follow through.
* IronicNickname: Melusine calls him the White Dragon of Britain as in Proper Human History. His Insect of the Abyss form is pitch black.
* {{Irony}}: In Proper Human History Vortigern was the embodiment of Britain's will who wanted a world dominated by Mystery and fought to keep the Age of Man from happening. In the Lostbelt, Oberon Vortigern seeks to destroy Faerie Britain, which is exactly the kind of world the other Vortigern wanted.
* ItsPersonal: Zigzagged regarding his relationship with Morgan. Ever since his first incarnation as King of the Mors, Vortigern did everything he could to kill her and undo everything she had ever done by destroying Faerie Britain, and there is no denying he has a degree of hatred toward her, which is mutual on Morgan's part. However, upon his Third Ascension, he claims the reason he didn't watch Morgan's death in the Lostbelt is because he acknowledges he was only born as a response to Morgan's actions in preserving Faerie Britain, and he doesn't hate "the picture book she drew" - as in, he doesn't hate the story she has created.
* JekyllAndHyde: As Oberon, he has an almost infectious amount of cheeriness, if bordering on sarcasm at times. As Vortigern, he becomes utterly pessimistic and blunt, if still affable. It's to the point where he has different My Room lines depending on if he's presenting himself as Oberon or Vortigern; cheery comparisons made as Oberon will do a total 180 as Vortigern and vice-versa, and his opinions on Servants will likewise fluctuate, even having multiple lines for the same Servant.
* KickTheDog: He arrives on ''Storm Border'' on Blanca, who had absorbed enough curses from Cernunnos that she dies right after landing. All that Oberon does is give her a half-hearted thank you and then just kicks her off the ''Storm Border''[[SubvertedTrope …until you read Oberon’s Bond Craft Essence’s text, A Pavane for a Dead Princess]]. Turns out Blanca, the “princess” of the Welsh forest, fell in love with Oberon the moment she saw him. She was aware of his hatred/disgust of everything and everyone in the Faerie Britain, but when she understood “what he truly hated the most” (left ambiguous, but possibly himself who’s implied to not have despised the Welsh fairies completely, despite “hating them” and having to destroy them in the end like everything else), she vowed to flap her wings for him until the last of her days wishing it can bring warmth to his cold limbs someday. The text implies that Oberon was aware of Blanca’s feelings but kept it to himself to the end, [[FridgeLogic which makes sense if you think about his trait as a Pretender; everything he says gets twisted into a lie, so even her love will become tainted if he acknowledges it in any way]]. [[TearJerker Oberon saying “Oh, you’re dead? Well, I don’t really care anyway” likely means the opposite, and him flicking her corpse off ''Storm Border'' before starting the battle is probably coming from his intention to not drag her down to the Abyss along with Chaldea and himself]].
* KickTheSonOfABitch: All his villainous plans aside, when he boasts that he achieved his goal of destroying Faerie Britain, seeing that it's a big {{World Of Jerkass}}es who had squished every one of its sympathetic elements into the ground because of not adhering to their usual awful mentality, it is likely a boast most players wouldn't feel too bad about.
* KnowWhenToFoldEm: Once in his 3rd Ascension Vortigern has no issue mocking most of the Servants from Faerie Britain ''to their faces''... except Melusine/Albion. Vortigern even retreats to avoid meeting and being detected by her, though he still insults her when she is out of earshot. Likely justified, since Melusine has advantage against him in many ways - see LogicalWeakness below.
* KungFuWizard: His real fighting style is much more snappy and aggressive than the more whimsical one he used as Oberon.
* LazyBum: As a playable Servant no longer beholden to his role as Faerie Britain's destroyer, Vortigern comes off as a harmless grump and spends more time lazing about and snacking than doing anything villainous. He's so lazy, he doesn't even ''bother'' cleaning his room, and only goes out 'begrudgingly' when he's needed for work.
* LateArrivalSpoiler: Despite his WalkingSpoiler status which hides his 3rd and Final Ascension apperances for players who have yet to clear Lostbelt 6, the "One Night's Dream" Craft Essence distributed during the Chaldea Boys 2022 event (which requires a simple Fuyuki clear) outright protrays him as Vortigern.
* LivingLieDetector: He has Fairy Eyes which can detect lies.
* {{Leitmotif}}: Once Oberon shows his real self and is fought as the final boss of the Lostbelt 6, it is appropriately titled [[https://youtu.be/xrM-KutDyTM "The End"]]. A snippet of the song also plays whenever he uses his Noble Phantasm in his Third Ascension, transforming into the Insect of the Abyss itself.
* LogicalWeakness: An example where he ends up having a LogicalWeakness be used against him and another where he ends up being this trope to another character
** The Hollow Worm is a titanic mass of curses which function like a mobile BottomlessPit in practice, capable of harmlessly sucking in most forms of attacks and eventually the entire planet given enough time. However, the Hollow Worm requires time to annihilate all the things it devours; sufficiently resilient objects will endure the insides of the Hollow Worm as they fall infinitely until they melt away. While normally there is no way for anything inside the Hollow Worm to escape, individuals with {{Flight}} abilities and sufficient agility can avoid getting sucked in the first place, and powerful enough attacks can inflict temporary damage to the Worm’s body and create an opening within the bottomless pit to the outside - this is how Melusine opens up a path for Chaldea to escape out of the Hollow Worm at the Lostbelt’s finale.
** Oberon Vortigern has a power that makes him the perfect counter to Morgan herself. As a being with control over insects he naturally has the ability to call upon Caterpillars which is one of Morgan’s psychological weaknesses. As such his second incarnation if unleashed without Chaldea would make him the perfect counter to stop and destroy Morgan before finishing his work on the Faerie Lostbelt.
* MagicKnight: Despite his physical stats as a summoned Servant being closer to a SquishyWizard, his overall fighting style is very physical (he fights like a whimsical jester as Oberon, and becomes a lot more brutal and ferocious as Vortigern), enough to engage both Mash and Altria Avalon in melee combat. He is also proficient in a variety of Mystics, both Magecraft and Faerie Mystic, as he can communicate telepathically with someone he doesn't see in person, self-study specific Magecraft and teach them via telepathy, create magical items (A+ Rank Item Construction), and manipulate memories (as he did with Barghest).
* MightyRoar: As the Insect of the Abyss, the wyrm belts out intimidating and frightening '''bellows''' as it swallows up everything into its maw. When Oberon uses his Noble Phantasm in his Third Ascension, this becomes [[RoarBeforeBeating downright terrifying when it roars]] before lunging at its prey and eating them whole.
* MindManipulation: He's heavily implied to be responsible for wiping Barghest of her memories of eating her lover so that she doesn't kill herself earlier than he planned.
* MutuallyExclusivePowerups: He has a passive skill called Anti-Human Order D that increases party debuff chances on non-Foreigners, and makes Merlin's buffs get a 20% chance of not working. Its name is only revealed if the player has cleared Avalon le Fae.
* NakedOnArrival: In his 2nd manifestation in the Lostbelt, he didn't have any clothes or armaments as he was improperly summoned. He's initially presented in flashbacks for when this happened looking relatively normal, sleeping in warm sunlight as the insect fairies marvel at him. Then TheReveal hits and [[OnceMoreWithClarity the same flashback is revisited]], except this time, his body is very sickly with his skin deathly pale and his eyes ominously staring into nothing. The insects are crawling all over him and the background has no trace of sunlight, being a similar shade of green as his eyes.
* NearVillainVictory: Once he becomes the Insect of the Abyss he comes damn near destroying the entire planet before Chaldea stops him. According to Sion he was only ''two minutes'' away from complete victory.
* NeverMyFault: His hatred against Proper Human History stems from the fact that he feels that it's judging the Lostbelts as inadequate. In previous Lostbelts, this would be justified as it was either the wrong actions of a couple of individuals or just plain bad luck that doomed their world, but sadly this isn't the case for the country of the fairies. His very hatred at "being judged" falls into this category because it feeds into the fairies' own mentality of never being able to take criticism; despite the fact that they ''know'' they've done wrong on some level, they have made every wrong choice imaginable and react violently whenever someone brings this up, simply refusing to take any judgement or even complaints from other people. Thus, sadly, his hatred has less to do with Proper Human History judging them, which ironically no one from said history actually does, and more with the fact that their existence is a living reminder of the very same fact that the whole timeline is a mistake, something that Oberon cannot stand and leads to his very complicated feelings towards the protagonist.
* NoSell: A Midsummer Night's Dream EX gives him immunity to Mental Debuffs and Curse. Despite this, he's not immune to his own End of a Dream either, leading to various HoistByHisOwnPetard moments in battle.
* NonActionGuy: Oberon claims he can't fight. He is pretty handy with a sword though. However true that might be of the Heroic Spirit Oberon ''specifically'', however, it's ''definitely'' not true of Vortigern.
* NonStandardCharacterDesign: To stress his otherworldly nature, he has a very distinct look that sets him apart from the already diverse cast of Servants courtesy of [[Manga/HoneyAndClover Chica]] [[Manga/MarchComesInLikeALion Umino.]] Nasu stated on his blog that he specifically asked Umino to stick with her usual style instead of trying to fit ''Grand Order'''s style. He becomes even more otherworldly in a sinister manner with his true form, still drawn in the same style as before. This is especially notable as Umino has entomophobia (fear of bugs), yet did her best to study insect anatomy to give the best result possible.
* NoodleIncident: His profile notes he has been incarnated three times, with his first life as the King of Mors and his third and current life as Oberon. Nothing is spoken about his second incarnation.
* NotQuiteFlight: As detailed under WingsDoNothing, despite his wings Oberon cannot fly, and neither can Vortigern. However, he can abuse his SleepModeSize to shrink into the size of a small moth and then ride one of his insect companions, usually Blanca, to travel at high speeds (130 km per hour, according to his profile), signified by his A Rank Riding skill.
* OlderThanTheyThink: {{Discussed|Trope}} InUniverse. As Tristan explains early into the Lostbelt, while ''A Midsummer Night's Dream'' is Oberon's most famous portrayal in modern days of Proper Human History (and in real life), he has existed in folklore and literature for centuries before then. Caesar's profile also mentions a myth that he slept with a fairy, though it didn't mention if that same myth resulted in him fathering Oberon with her (one of Oberon's older origin stories), something he alludes to in his 'public' Valentine's scene. As Shakespeare and his works don't exist in the Lostbelt, the identity of Oberon forced upon Vortigern by the Welsh faeries ''should'' have been this [[TheFairFolk "Oberon, the Ancient Faerie"]]. Despite this, his role in the story is similar to his role in ''Huon of Bordeaux'', being the guide to the heroes on a seemingly impossible task.
* OmnicidalManiac: A step up actually from Proper Human History Vortigern in the ''Garden of Avalon'' novel, who sought simply to [[KillEmAll wipe out mankind]] to ensure a world dominated by Mystery; in the time Vortigern spent undermining the Lostbelt, seeking to destroy it so he could escape, he decided to elevate his goal to simply annihilating '''''ALL''''' of Proper Human History, which includes the world.
* OmniscientMoralityLicense: Similar to Shakespeare, Oberon will do things because he thinks it fits the narrative. For example, he waited before finding the Protagonist and Altria Caster because he thought it would increase their RelationshipValues. Unlike Shakespeare he's not doing it because [[ItAmusedMe it amuses him]] but because that's how he thinks stories work. Notably, this is mildly implied to be the reason why Oberon didn’t backstab Chaldea when they were fighting against Cernunnos, even though had he decided to go against them at that point Chaldea would likely have lost and Cernunnos would have destroyed the planet (and Proper Human History) for him.
* TheOneGuy: The first male Pretender... and as of writing the only one.
* OneWingedAngel: Another trait shared by both Proper Human History and Lostbelt versions of Vortigern is his habit to grab an external source of power just in time and then transform into a dark DraconicAbomination. Proper Human History Vortigern as a dragon is powerful enough to drain the light of Excalibur and Galatine (Anti-Fortress and Anti-Army Noble Phantasms, respectively) which temporarily reduces them into ordinary swords, then casually releases magical energy vastly above that magnitude to fight Altria and her Round Table Knights. On the other hand, Oberon Vortigern as Insect of the Abyss proves capable of fighting Chaldea and Altria Avalon after her ascension as the materialized concept of Holy Sword user.
* OptionalBoss: Fully ascending him and completing Avalon le Fae will unlock a interlude where you can face a Shadow Servant version of him. This variant carries a few tricks his boss variant never used in Avalon le Fae, such as using End of a Dream EX before activating his Noble Phantasm, and using his Noble Phantasm even as a Shadow Servant, a feat that Shadow Hassan of the Serenity and Shadow Tamano Cat have used during their boss fights within Camelot and Avalon le Fae respectively. The reward is access to both his Third and Final Ascension arts, alongside his respective lines and access to his second NP Lie Like Vortigern.
* OutsideContextProblem: In the clash between Chaldea, the Crypters, the Lostbelt Kings, the Disciples, Koyanskaya, and the Foreign God for ultimate victory, Oberon Vortigern emerges as a dark horse that has the potential to render all of their efforts meaningless, with the sole exception of Zeus and his plan of leaving Earth for good. It wouldn't matter if Chaldea or the Foreign God wins, or if Wodime turned everyone into Olympus into a god, or if Koyanskaya finally became a Beast; they would all fall for eternity in an endless abyss together.
* ParentalSubstitute: Because Altria Caster was essentially alone and unwanted by the Fairies, as "Merlin" Oberon Vortigern essentially raised her in a manner not dissimilar from the real Merlin, but was her sole support entirely, unlike PHH Altria who had friends and family along her path to her Destiny.
* PerceptionFilter: It’s later revealed that throughout your journey through Faerie Britain, Merlin is unaware that Oberon even exists since he cannot even ''see him'', making him think that you've been talking to yourself the entire time. His profile reveals this to be part of his skill, Anti-Human Order (D Rank), which allows him to interfere with phenomena and laws within humanity. Oberon dislikes Merlin in particular, so much to the point he allocated all camouflage abilities given by this skill towards keeping Merlin from seeing him. This ability to conceal himself from observers, even high level Clairvoyance on Merlin’s level, as well as how Chaldea’s sensors pick up his Hollow Worm form as “a hole in reality”, gives him an uncanny similarity with [[EnigmaticMinion the Priestess of the Foreign God]].
* PersonOfMassDestruction: Twofold. When first summoned into the Lostbelt as King of the Mors, Vortigern was able to corrupt an untold amount of Faeries into Mors, enough to be considered a Great Calamity, and fought Morgan’s forces in a war with them. Then once Cernunnos is defeated and he realizes his nature as Insect of the Abyss, he takes this up a couple notches by being able to suck in everything (up to and including the ''entire planet'') into the pit Cernunnos was sleeping in.
* PestController: In his Oberon form, he can summon butterflies when using his skills or to bombard the enemy with their glistening dust. Once his true form is revealed, his arsenal comes to include massive pillbugs that he can kick into the enemy and ravenous dragonflies. He can't order them to be quiet or leave him alone though, and resorts to using bug spray when he wants some peace and quiet.
* PetTheDog:
** He's the one who teaches Altria Caster magic and not Merlin (he merely introduced himself as Merlin, and because it was through telepathy, Altria didn't know his face) because one day Altria mentions she wishes she could make fire as the stable she's staying in is very cold. Despite being actually incapable of using magic, he goes through the pain of learning it in order to teach Altria how to do it, and this goes on for about a year; Altria will mention what she wants to learn, and Oberon Vortigern will learn it for a few days before teaching it back to her. This is why the majority of Altria's magic is rather unique and oddly specific.
** Oberon admits that he wouldn't have answered his Master's summons if he didn't like them. Even in his true persona Vortigern, who hates pretty much everything in existence, he says that his Master is among the few things he actually likes. He tells them to exercise caution when handling the poisoned letter he made for the purpose of killing Shakespeare.
** In his Valentine's scene, Altria Caster notes that even if he gets irritated by the protagonist, if he lets them into his dream world, it means that he'd at least be willing to listen to them. True to form, Oberon Vortigern allows the protagonist into his dreams so that they can hand him his Valentine's gift.
* PowerAtAPrice: His third skill, The End Of The Dream EX, is easily ''the'' biggest example in the game so far. The Power granted to the selected ally is a 50% increase to Buster effectiveness, and ''amplifies'' any NP damage buffs the ally has by up to ''100%,'' (this includes NP damage buffs from Craft Essences like the Black Grail) which can result in bigger damage potential. The Price on the other hand is a ''framed'' Demerit clock debuff (meaning it cannot be removed at all though you can delay the effects if the Guts buff gets triggered the end of the turn), and on the next turn, the ally's buffs are removed ([[BeyondTheImpossible which outright ignores buff removal resistance]]), they take a Taunt debuff, they cannot be switched out or sacrificed, and as the final kicker, they suffer a '''PERMANENT SLEEP DEBUFF''' which will never, ''ever'' go away by any means, even if the ally is attacked. In short, it supercharges the Servant for one turn, then turns them into [[TheLoad complete and utter dead weight]] for the rest of the battle. This makes the skill only useful in the final wave of quests (where the demerit won't matter), as a DeathOrGloryAttack, or for someone like Arash and Habetrot who can kill themselves. Arash in particular has unholy synergy thanks to his NP being an already hard-hitting AOE Buster, making him the perfect recipient.
* PowerLimiter: It's Cernunnos himself. As long as Cernunnos exists Vortigern cannot summon his Hollow Worm, so he goes to the trouble of manipulating both sides so Morgan and Cernunnos can be defeated. Once they're out of the picture, the predicted collapse finally begins after being kept in mystery the whole chapter.
* ThePowerOfHate: Outright exclaims as he reveals himself that he is defined by his ''immense'' hate towards mankind, so much that he spells out that he is capable of being classified as a "[[OmnicidalManiac Threat To Humanity]]", a thing only a handful of enemies (usually Foreigners and those related to them) have been classified as, almost in spite of the fact he cannot be a Beast-class enemy due to the fact that Vortigern is so immensely hateful that [[ThePowerOfLove love]] is normally lost on him completely. [[ZigzaggedTrope That said]], however, due to his {{Brainwashing}} as Oberon he is able to recognize and yearn enough for the idea of Titania, an entirely fictional character that Shakespeare created to be paired with the much more ancient idea of Oberon, that it is able to give Vortigern the faintest idea of love and fight as hard to want to meet Titania as much as he wants to destroy everything.
* PragmaticHero: Even as Oberon, he still had his rough spots. Most notably, he hides info about the full prophecy Altria Caster and Chaldea are trying to fulfil like how Norwich was meant to be destroyed by the Calamity, and makes under-the-table deals with Koyanskaya to advance the fight against Morgan.
* PrecisionFStrike: Sometimes lets slip a profanity or two as Vortigern, before sarcastically apologizing for his 'un-princely' language and asking the player to pretend that they didn't hear that.
* PrinceCharming: Oberon's Bond 3 description calls him a 'perfect prince of light as though coming straight from a fairytale' with good looks and a kind-hearted personality. In fact, he was designed to look as though he came from a picture book without any edits. Once he reveals his true nature as Vortigern, the description changes to 'a [[EvilPrince prince of darkness]]', who still has the good looks but is now a perfect blight as though he's a fairytale villain. It's for this reason that Cinderella Elizabeth tries to court him regardless of which ascension he's in.
* PurposeDrivenImmortality: As long as Morgan tries to save the land, Britain will keep fighting back and incarnating its will to destroy it. He's already died once before as the King of Mors to Woodwose, but was revived as Oberon.
* RageAgainstTheAuthor: Oberon definitely has a problem or two with Shakespeare. His My Room line for him has him writing a heartfelt letter to "his author", only to tell you to deliver the letter to "that bastard" and warning you that the wax seal and the ink he used are filled with poison.
* ReadingsAreOffTheScale: Lie Like Vortigern is an ''Anti-World'' Noble Phantasm with an ''EX'' Rank, like Fujino's Vijñāpti-mātratā, Kama/Mara's Mara Avaruddha, and Arjuna Alter's Mahāpralaya. However, the Range and Maximum Targets are both listed as being '''''Unlimited'''''.
* ReluctantMonster: Downplayed. While Vortigern is filled to the brim with disgust and hate toward the inhabitants of Faerie Britain, some of his words imply he has a degree of unhappiness with his role as its destroyer, without any choice on his part. His Interlude shows he is much more relaxed and content without being shackled to the role forced upon him by Faerie Britain, and his line toward Morgan after his Third Ascension suggests he might not have attempted to destroy Faerie Britain if he had any choice in the matter. Koyanskaya also states that Vortigern is filled with self-loathing unlike herself who takes pride in her evil deeds.
* SecretAIMoves:
** As the FinalBoss of Avalon le Fae, he can use a skill that inflicts Sleep on various party members alongside a timed debuff. For obvious reasons, this skill is not available to the playable Oberon.
** His BonusBoss variant in his interlude has him use End of a Dream EX without having it inflict a timed debuff where it inflicts the Eternal Sleep debuff on anyone he uses it on.
* SecretlySelfish: While Oberon comes off as being the "good personality" of the two, ''he's'' the one who wants to destroy the Proper Human History. As a character who originated from a fictional play, he is spiteful towards humanity and how the world approves of them by culling away the stories that Lostbelts tell. All that Vortigern wants to do is destroy the Faerie Britain, but BrainwashResidue causes him to carry out Oberon's wish to destroy the Proper Human History.
* ShapingYourAttacks: Several of his projectiles decay into a suspiciously dark-looking mud-like substance after they connect with the target. It's foreshadowing how he was the King of the Mors by having a more refined version of their sludge attacks.
* ShownTheirWork: On the first glance, having Vortigern of Arthurian Legend pretending to be the Shakespeare-popularized Oberon might seem to be the most random combination. However, there exists a play named ''[[https://en.wikipedia.org/wiki/Vortigern_and_Rowena Vortigern, an Historical Play]]'' that was believed to have been a genuine Shakespeare play but was shortly after proven to be a Shakespeare hoax and mocked upon the first performance, meaning that "Vortigern" has some history to mimicking Shakespeare's work.
* SigilSpam: The inside of his cloak is covered with the Thistle Royal Badge of Scotland.
* SinisterScythe: He can conjure one, seemingly made out of an insect's leg, in his boss fight. This carries over to the playable version of him.
* SituationalDamageAttack: His Noble Phantasm does additional damage to Lawful servants.
* SleepModeSize: He can shrink down to the size of a moth, represented in his art as a chibi version. He calls this his "Robin Goodfellow" form. His Extra Attack animation shows that he can still fight while in this form. While he uses this form to fly fast enough to cover the entirety of Faerie Britain in 2 days, it also turns him into a slight airhead.
* SpaceTimeEater: The Insect of the Abyss like all black holes warps the fabric of space-time itself, but the Insect goes a step futher by devouring it as well. Holmes notes that space itself is falling towards the Insect's maw, like water draining into a sink.
* SpannerInTheWorks: He completely derails Koyanskaya's plan to become a Beast with ExactWords, the ramifications of which are explored in the next story event "Tunguska Sanctuary". The first time was telling her the location of Albion's corpse while hiding it was now a pile of bones useless for her plans. Her attempt to capture its left hand Melusine as a replacement ended in her sixth tail getting destroyed temporarily. The second was telling her that Cernunnos's curses were a "world-destroying weapon" she could safely absorb for more power. The curses in reality target everything for destruction, and absorbing them cripples her Spirit Origin permanently as they continuously eat away at her on the inside. She also absorbed so much that it forced her transformation ahead of schedule, ultimately denying her the Beast class designation.
* SquishyWizard: His official statistic as a summoned Servant has both his Strength and Endurance at D Rank. That being said, every other stat is highly-ranked to compensate, with Lie Like Vortigern being an ''EX Rank Anti-World Noble Phantasm with Unlimited Targets and Range''.
* StarCrossedLovers: Even though he knows that she's a fictional character and admits it's a pipe dream, he wants to meet Titania, saying that she is the only person who could love the eccentric King Oberon. Even after remembering his true nature, he admits that he still clings to finding his ideal in Titania someday.
* SupportPartyMember: Oberon's skillset is focused on supporting himself, or his allies, especially when it comes to Buster-oriented teams. His first skill Curtain of Night EX increases the party's NP gauge by 20% and gives a 20 to 30% damage increase for 3 turns. His second skill Morning Lark EX increases a single party member's NP gauge by up to 50% and drops 10 to 20 crit stars in exchange for reducing the gauge by 20% a turn later. His third skill, The End Of The Dream EX, confers a unique and very powerful benefit to a party member, but see PowerAtAPrice above for more details about it. Unlike fellow Support servants like Merlin though, he has a damaging [=AoE=] NP that does huge damage (even more vs Lawful Servants) and gives them the Sleep status in exchange for also giving them Invincibility for one turn.
* SuspiciouslySimilarSubstitute: If Cernunnos is a Tiamat analogue, then Oberon Vortigern is Surtr. They are {{Omnicidal Maniac}}s initially overshadowed by the local Lostbelt Kings, hiding under false identities, manipulating both sides in order to unleash their true power, and capable of breaking free of their Lostbelts to threaten the entire planet.
* TakingTheBullet: He does this in the climax of Lostbelt No. 6 Part 2 for the heroes when Morgan's clone attacks them after they've let their guards down. He pretends it killed him so he can make his moves in the background of Part 3.
* TeethClenchedTeamwork: If summoned after completing Avalon le Fae, which means defeating him as its FinalBoss, his summon quote will change to reflect the absurdity of the situation -- that he's now being forced to fight for the very Proper Human History he just tried to destroy. He makes clear from the get-go that he had no intention of "redeeming" himself like other summoned villains and is ''not'' pleased with this turn of events.
-->''...What's going on? Why is this happening...? Oh, I see. So even lies are permitted until the Human Order is restored? Hm... very well, I give up. After all, that's the kind of human you are. My name is Oberon. Now that I've been summoned, I will lend you my power. It truly is an unpleasant feeling though, don't you agree?''
* ThemeMusicPowerUp: His Noble Phantasm theme in 3rd Ascension is a short snippet of his boss theme.
* ThirdPersonPerson: Occasionally, Oberon would refer to himself in third person as though a separate being. Notably, his My Room line about the holy grail has this:
--> ''Oberon loves sparkly and unusual things~ If they belong to someone else, even more.''
* TrademarkFavouriteFood: Honeydew melons, as revealed in one of his My Room lines. Like everything else about him, it's not clear whether he actually likes it, since Altria Caster in her materials comment towards him accuses him of constantly ordering them simply to piss off everyone in the cafeteria by claiming that they're "rare and expensive".
* TrashOfTheTitans: In Oberon's Valentine scene, should you choose to give his gift in private he brings you to his room... and messy doesn't [[ExaggeratedTrope accurately]] describe [[https://twitter.com/carlikun/status/1491372983835045888?s=20&t=GnqovHz_gw_5FK3XO8rZSg the state it's in]].
* TwoAliasesOneCharacter: This man first materialized into Faerie Britain as Vortigern, started the Great Calamity of 1000 AD as the King of the Mors, was reincarnated in a Servant format modeled after Oberon, pretended to be "Merlin" in order to teach Altria Caster magic, is identified by Melusine as the White Dragon of Britain, and finally became the last of the Great Calamities as the Insect of the Abyss. So in total he has ''[[ExaggeratedTrope six different aliases]]'' as just one character. He's actually pretty proud of having a ton of names and titles to go by.
* WalkingSpoiler:
** The third part of Avalon le Fae reveals ''many'' things regarding his true identity, the least of which includes the fact that he's actually in a completely new Servant Class for the game and that he's actually a completely different character under the belief he is Oberon. It's to the point where players who haven't completed Avalon le Fae and his interlude but were able to summon him cannot view his last two ascension arts.
** Additionally, he's the only Servant who requires story completion before receiving his Valentine gift for the same reason as his final ascension arts. If the player hasn't cleared Avalon le Fae before the year's Valentine event, Oberon will be all take and no give until the year the player manages to do so, and even then they need to choose the correct option in order to get it.
* WeaksauceWeakness: He can't fly unassisted, just hitch a ride with one of his insects, and only when he is in SleepModeSize at that. While the majority of Servants can't fly either, his Hollow Worm's power is sucking things into a BottomlessPit; if his Spirit Origin is damaged to the point he cannot shrink, then he is doomed once he falls into his Hollow Worm. This is exactly how he is defeated at the end; while the preceding boss fight against Cernunnos was a dramatic, uphill battle where Chaldea had to fight tooth and nail just to survive, Vortigern's defeat comes off as comically anticlimatic to the point Chaldea don't even bother killing him; Mash and Altria Avalon simply inflict critical damage on his Saint Graph and then shove him off the edge of the ''Storm Border'' before gravity does the rest.
* WingsDoNothing: Both Oberon's and Vortigern's wings are essentially nothing more than decorations as he is unable to fly in either form. He playfully laments this after his defeat, falling for eternity in his own Hollow Worm.
* WorthlessTreasureTwist: Oberon's Valentine scene is unique as while it doesn't have any "actual" Bad Ends, it has multiple dead ends where you won't get a Return Gift from him. When you finally figured out the right route to get the proper ending, he leaves you with a brilliantly crafted box containing... Void's Dust, the most common bronze material in the game. Possible symbolism and the quality of the box aside, your reaction to the gift itself shows that you don't really appreciate Oberon's sense of humor.
* YouDontLookLikeYou: Understandable in this case, as "Vortigern" is the name for an avatar of Britain's will, and the forms that agent takes in Proper Human History and Faerie Britain are very different. PHH Vortigern, from how he's described in the ''Garden of Avalon'' novel, comes off as an enormous TinTyrant akin to [[Literature/TheLordOfTheRings Sauron]] (which partially forms the basis of Saber Altria Alter) who eventually transforms into a literal DraconicAbomination against Altria. When he is finally defeated, he withers into the form of an old, human man. Faerie Britain's Vortigern is a very different entity with a very different approach, secretly working to engineer Britain's destruction through a MeleeATrois.
* YoungerThanTheyLook: As far as his Oberon incarnation is concerned, he manifested around 1999, meaning that he is simply 18-years old.
* YouRemindMeOfX: His Oberon personality is, as Altria Caster puts it, "Merlin-esque." Becomes a ''major'' case of {{Irony}} since Vortigern himself ''hates'' Merlin with a burning passion, but then becomes {{foreshadowing}} with TheReveal that ''he'' was the one who taught Altria Caster, not Merlin, and just used Merlin's name.
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