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* WeaponsOfMassDestruction: Apparently, Cloak-Bots are equipped with a SelfDestructMechanism designed to level ''half an entire city'' as a last resort.

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->''"Don't you think it's time to say goodbye to those childhood friends of yours, son?"''
-->— '''King Aldrich''', to then-Prince Andrias

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->''"Don't [[caption-width-right:350:''"Don't you think it's time to say goodbye to those childhood friends of yours, son?"''
-->— '''King Aldrich''', to then-Prince Andrias
son?"'']]



[[caption-width-right:350:''"I'm a descendant of a long line of newts who made a sacred vow to care of this land. The trees, the plants, the animals... All are under our care."'']]



* ConflictingLoyalty: [[spoiler: She seems to have been fond of Marcy, and despite dealing with their antics during "The Sleepover to End All Sleepovers" Olivia has no hesitation in helping the Plantars out with Anne's plan to free the city from Sasha and Grime's coup. She's equally surprised and horrified as they when Andrias reveals the truth about his intentions for the Calamity Box, but seeing as he's still her king, she doesn't outright defy him either. During the big fight with his MechaMooks she keeps out of the conflict due to being a noncombatant and doesn't actively support either side. "Turning Point" reveals that she and Yunan decided to just try and [[ScrewThisImOuutaHere leave the room]] at the earliest opportunity, rather than choose between the allies who she just saved Newtopia with and her king, but when Andrias notices them attempting to leave they're given no choice but to [[WithusOrAgainstUs reaffirm their loyalty to him]] despite being conflicted over his overall plans. That is, until she reveals she can't serve him anymore. Her loyalty is ultimately to the land of Amphibia, and she failed that by letting him strip-mine it for resources.]]

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* ConflictingLoyalty: [[spoiler: She [[spoiler:She seems to have been fond of Marcy, and despite dealing with their antics during "The Sleepover to End All Sleepovers" Olivia has no hesitation in helping the Plantars out with Anne's plan to free the city from Sasha and Grime's coup. She's equally surprised and horrified as they when Andrias reveals the truth about his intentions for the Calamity Box, but seeing as he's still her king, she doesn't outright defy him either. During the big fight with his MechaMooks she keeps out of the conflict due to being a noncombatant and doesn't actively support either side. "Turning Point" reveals that she and Yunan decided to just try and [[ScrewThisImOuutaHere leave the room]] at the earliest opportunity, rather than choose between the allies who she just saved Newtopia with and her king, but when Andrias notices them attempting to leave they're given no choice but to [[WithusOrAgainstUs reaffirm their loyalty to him]] despite being conflicted over his overall plans. That is, until she reveals she can't serve him anymore. Her loyalty is ultimately to the land of Amphibia, and she failed that by letting him strip-mine it for resources.]]



* HatesBeingTouched: Lady Olivia doesn’t like being manhandled, er…lady-handled.

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* HatesBeingTouched: Lady Olivia doesn’t like being manhandled, er…lady-handled.er... lady-handled.



* LipstickLesbian: Has quite a bit of subtext with Yunan, as they hold hands several times in Season 3, Yunan outright calls her "m'lady", and [[spoiler: even when mind-controlled, the two fight together, though it’s unclear if they’re actually able to fight with such coordination on their own. In the series finale, they get together]].
* MasculineFeminineGayCouple: [[spoiler:With Yunan after the TimeSkip, and her calling Yunan “Sweetheart” implies that they’re married]].

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* LipstickLesbian: Has quite a bit of subtext with Yunan, as they hold hands several times in Season 3, Yunan outright calls her "m'lady", and [[spoiler: even [[spoiler:even when mind-controlled, the two fight together, though it’s it's unclear if they’re they're actually able to fight with such coordination on their own. In the series finale, they get together]].
* MasculineFeminineGayCouple: [[spoiler:With Yunan after the TimeSkip, and her calling Yunan “Sweetheart” "Sweetheart" implies that they’re married]].they're married.]]






* ChekhovsGunman: In "True Colors", [[spoiler: Joe initially only shows up for the beginning of the episode, like most of his previous appearances, acting as the group's transportation and having little to do with the events that occur inside Newtopia, but his presence is what allows Marcy to save Sprig from his DisneyDeath at Andrias' hands]]. In "Turning Point" (only mere minutes later in-universe), he repeats the act, only this time with [[spoiler: Grime and Sasha, giving them a way out of Andrias' OminousFloatingCastle and avoiding being captured with the rest of the toad army]].

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* ChekhovsGunman: In "True Colors", [[spoiler: Joe [[spoiler:Joe initially only shows up for the beginning of the episode, like most of his previous appearances, acting as the group's transportation and having little to do with the events that occur inside Newtopia, but his presence is what allows Marcy to save Sprig from his DisneyDeath at Andrias' hands]]. In "Turning Point" (only mere minutes later in-universe), he repeats the act, only this time with [[spoiler: Grime [[spoiler:Grime and Sasha, giving them a way out of Andrias' OminousFloatingCastle and avoiding being captured with the rest of the toad army]].









** She also appears in the Season 2 finale when [[spoiler: King Andrias' castle starts floating off Newtopia]].

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** She also appears in the Season 2 finale when [[spoiler: King [[spoiler:King Andrias' castle starts floating off Newtopia]].






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[[caption-width-right:350:"My name is General Yunan, scourge of the Sand Wars, defeater of Ragnar the Wretched, and the youngest newt to ever achieve the rank of general in the great Newtopian Army!"]]

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[[caption-width-right:350:"My [[caption-width-right:350:''"My name is General Yunan, scourge of the Sand Wars, defeater of Ragnar the Wretched, and the youngest newt to ever achieve the rank of general in the great Newtopian Army!"]]Army!"'']]

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The human girl who ended up in Newtopia. [[Characters/AmphibiaMarcyWu She has her own page.]]

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The human girl who ended up in Newtopia. [[Characters/AmphibiaMarcyWu She has her own page.]]page]].



[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/tumblr_6bb4ba1230a432ed5885842954d81918_f56fb88f_1280.png]]
[[caption-width-right:350:"My name is General Yunan, scourge of the Sand Wars, defeater of Ragnar the Wretched, and the youngest newt to ever achieve the rank of general in the great Newtopian Army!"]]

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[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/tumblr_6bb4ba1230a432ed5885842954d81918_f56fb88f_1280.png]]
org/pmwiki/pub/images/general_yunan.png]]
[[caption-width-right:350:"My name is General Yunan, scourge of the Sand Wars, defeater of Ragnar the Wretched, and the youngest newt to ever achieve the rank of general in the great Newtopian Army!"]]



* MasculineFeminineGayCouple: [[spoiler:With Lady Olivia after the TimeSkip]].

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* MasculineFeminineGayCouple: [[spoiler:With Lady Olivia after the TimeSkip]].TimeSkip.]]



[[folder:Lady Olivia]][[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/c032f1a7_02a6_423a_b38b_0083f482e32a.png]]

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[[folder:Lady Olivia]][[quoteright:350:https://static.Olivia]]
[[quoteright:350:https://static.
tvtropes.org/pmwiki/pub/images/c032f1a7_02a6_423a_b38b_0083f482e32a.org/pmwiki/pub/images/lady_olivia.png]]
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-->'''Voiced by:''' Creator/KeithDavid

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-->'''Voiced ->'''Voiced by:''' Creator/KeithDavid



-->'''Voiced by:''' Creator/HaleyTju (as Darcy), William Houston (as Aldrich)

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-->'''Voiced ->'''Voiced by:''' Creator/HaleyTju (as Darcy), William Houston (as Aldrich)



[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/king_aldrich_s3_e14.png]]

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[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/king_aldrich_s3_e14.org/pmwiki/pub/images/king_aldrich.png]]

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* HatesBeingTouched: Lady Olivia doesn’t like being manhandled, er…lady-handled.



* HumbleGoal: [[spoiler:It’s evident she wants to have a quieter life, rather than take the throne of Amphibia after Andrias’ abdication. By the epilogue, Olivia was already planning for her retirement]].



* LipstickLesbian: Has quite a bit of subtext with Yunan, as they hold hands several times in Season 3, Yunan outright calls her "m'lady", and [[spoiler: even when mind-controlled, the two fight together. In the series finale, they get together]].
* MasculineFeminineGayCouple: [[spoiler:With Yunan after the TimeSkip]].

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* LipstickLesbian: Has quite a bit of subtext with Yunan, as they hold hands several times in Season 3, Yunan outright calls her "m'lady", and [[spoiler: even when mind-controlled, the two fight together.together, though it’s unclear if they’re actually able to fight with such coordination on their own. In the series finale, they get together]].
* MasculineFeminineGayCouple: [[spoiler:With Yunan after the TimeSkip]].TimeSkip, and her calling Yunan “Sweetheart” implies that they’re married]].
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* {{Bookends}}: Her first and final appearances feature her overly long introduction with her list of titles.
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* AintTooProudToBeg: As the three girls are beating the crap out of the Core's minions, Aldrich pathetically begs his son to save him, suddenly big on wanting him by his side when all he's done is deride Andrias for weakness. Andrias has none of it and tells him to suck it.
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* EvilSoundsDeep: His voice is quite deep and he is absolutely ruthless and tyrannical.

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The Core has its own character page now


[[caption-width-right:350:[[labelnote:Click here to see Darcy]]https://static.tvtropes.org/pmwiki/pub/images/darcyrender.png [softreturn] ''"(giggles) That... was pathetic. And you call yourself a king?"''[[/labelnote]]]]
[[caption-width-right:350:[[labelnote:Click here to see the Core's moon form]]https://static.tvtropes.org/pmwiki/pub/images/mooncore.png[[/labelnote]]]]



* ThirteenIsUnlucky: It has 13 eyes (10 when using Marcy's body) and it's the overall GreaterScopeVillain. And it is quite possibly the deadliest foe the heroes will have to face.
* AbusivePrecursors: An entire HiveMind of them, as they're a collection of all of Newtopia's previous rulers, and as the series goes on, it becomes clear they could care less about their descendants; not only do they show complete disinterest in the damage they cause to the Amphibians, but they treat King Andrias, the latest king and their most trustworthy servant, like a tool to be used and discarded.
* AchillesPowerCord: The Core is often attached to at least one cable. These cables when connected to the castle allow it to control and oversee its minions. But once it had been severed, they lose all the power they once had and are trapped inside of the helmet that allowed them to puppet Marcy.
* TheAgeless: Their mechanical body has stayed the same for millenia, not even getting rusty across the time Andrias was a young boy until he became an adult.
* AlmightyIdiot: In their huge robot form, the only thing The Core can do is slightly move and emit a horrible screech. Then it takes over Marcy's body...
* AmbiguousDisorder: During its brief appearance in "Froggy Little Christmas", it's shown using Marcy's icosahedron as a stimming toy, the initial shot even focusing on the hand holding the die. Given that Marcy herself seems (or, given the poor girl's current fate, seemed) to be autistic, this suggests that possessing her has caused it to take on those traits. "The Core & The King" confirms that indwelling Marcy's body has caused The Core to [[TheMindIsAPlaythingOfTheBody exhibit a lot of her personality traits, likes and mannerisms]], to the point that it basically comes across as still Marcy inside, but filtered through the Core's evil intentions. It tends to [[VillainousBreakdown lose composure]] when its plans have gone awry, and it goes into a complete meltdown when it realizes Sasha has cut its AchillesPowerCord and it's about to lose control of Marcy's body.
* AmbitionIsEvil: They wish to foil the prophecy about the calamity stones in order to keep using them to continue their conquest of the multiverse forever.
* AndIMustScream: {{Implied}}. The Core using Marcy's body as its host is a prime example of this, as while it is in control of her movements and memories, the real Marcy is trapped "in a little room" inside her own mind with no way out. "All In" shows Marcy is trapped in a LotusEaterMachine while the Core is controlling her.
* AncientEvil: They were around back when Andrias was still young, millenia ago, and are even older than ''that'' given they've assimilated the minds of most, if not all, of Newtopia's former rulers up to that point.
* AnimalMotif: Cephalopods, specifically octopi. The Core has a spherical body (or rather ''head'') with six to eight [[CombatTentacles tentacles]] protruding from it and huge eyes. Then it's revealed that the thing is not a singular consciousness but a collective of genius-level minds preserved in a cybernetic shell, not unlike how a single octopus is essentially a MindHive whose tentacles think and act semi-independently.
* {{Archenemy}}: While initially completely unknown to the girls, once they take over Marcy's body, The Core becomes a VIP on their hitlist; Marcy due to it taking over her body, and Anne and Sasha as a consequence of that action.
* ArtEvolution: In "Olivia & Yunan" and "Froggy Little Christmas", the eyes of Darcy's helmet closely resembled the Core's original body. In "The Core & The King" onwards, the eyes are now rhombus-shaped a darker red and the main three eyes have pupils.
* TheAssimilator: It assimilates the mind of whoever is currently ruling Newtopia to add it to its hive mind as they hand the throne to the next generation. They eventually decide to add ''Marcy'' into said hive in order to further throw a wrench at the prophecy.
* AssimilationBackfire: Taking over Marcy's body and becoming Darcy did allow The Core to become more mobile than before and actually speak for once, but they traded what was possibly a NighInvulnerable metallic body for Marcy's weak, nerdy one, not to mention that the tube connected to them becomes ''much'' easier to slice since Marcy's much smaller than their previous form.
* AssholeVictim: They're utterly wiped out by Anne using the three calamity stones' powers at once, but given they not only gaslit Andrias and used Marcy's body for their plans for conquest, but ruled Newtopia with an iron fist from the shadows in untold millenia, hardly any tears were shed.
* AuthorityEqualsAsskicking: You would think that inhabiting a frail, nerdy body with an extremely obvious weak spot would make them an easy target, right? Wrong. Just like Andrias, they are a surprisingly good fighter, as they were able to hold their own against Sasha and Grime. It even has various tricks at its disposal that it can us such as a energy scythe, combat tentacles, and even illusions.
* BadBoss: Slightly implied, it forced Andrias to use his somewhat genuine friend Marcy as its vessel, and later on in "Froggy Little Christmas" it calls him a pathetic excuse of a king when he throws a hissy fit following his latest plan failing to kill Anne. It’s not helped by the fact that one of those minds is his ''father''. In "All In", it outright tells Andrias he can forgets about joining his father and his ancestors should he fails to capture Anne.
* BigBad: The Core decides to officially take charge in the latter half of Season 3, directly leading the invasion, with Andrias as the muscle. And since the Core was the one who came up with the invasion plans, manipulated, groomed and gaslit Andrias into the person he is nowadays and is ultimately the biggest threat, it was the true main antagonist of the series all along but only now has it had the chance to truly be at the forefront of the villainy.
* BrainUploading: The Core is a collection of highly intelligent minds (implicitly actually just the minds of a long line of death-fearing despots) uploaded into a mechanical vessel in order to preserve them for some great ambition. Once it has Marcy in its clutches, it then transfers its entire collection into the poor girl.
* BreakingSpeech: A favored tactic of its, especially using Marcy's memories to [[WhatTheHellHero call Anne and Sasha out on their toxic behavior]] and telling them every dark thought Marcy ever had about them. During its final duel with Sasha, it tries to knock her off her game, though at that point Sasha has gone through enough CharacterDevelopment and is too hyperfocused on saving Marcy that she can {{No Sell}} it completely.
* BringIt: Is all too eager to battle Sasha and Grime.
-->'''Darcy:''' Let's rumble, girlfriend.
* TheChainOfHarm: With the implication that it holds the minds of all of Amphibia's past rulers, it's possible to interpret that the monarchy has been a succession of grooming the monarchs to act as figureheads for their rule before uploading them to their collective.
* CheatedDeathDiedAnyway: The Core's entire ''existence'' is supposed to allow the greatest minds and rulers of Newtopia to exist beyond death and rule forever, but once Anne uses all of the calamity stones' powers at once, they get destroyed for good.
* ControlFreak: Self-admits to being one in "All In"; they want everything to go exactly as they want, and once they see even the ''slightest'' of deviation, they try to put things back in order. "The Hardest Thing" makes it even more notable by having them grow ''beyond pissed'' when their plans are completely derailed.
* CoolHelmet: As Darcy, its helmet has mechanical branches that look similar to its tentacles from their original form. The helmet also has a ''very'' long wire that stretches far. Once it's severed from Marcy's head and the Core (as Darcy) is seemingly vanquished, it secretly takes the time to escape by having the helmet grow spider legs and scuttle off to plan a counterattack while the heroes are distracted. It even has ''rocket thrusters'', which is revealed in "The Hardest Thing".
* CombatTentacles: Mechanical tentacles which it uses to maneuver and grapple its victims. They're part of their body in their huge robot form, and become telekinetically manipulated by it in their Darcy form.
* CrazyPrepared: During the peak of Amphibia civilization, it finished a project on the moon to enable it to crash the moon into Amphibia’s surface and steal the stones as a last resort if it could not keep control over Amphibia’s people.
* CuttingTheKnot: When they met Marcy for the first time, they told Andrias to kill her before she could become a thorn on their side. However, Andrias convinced them to spare her for another purpose...
* DemonicPossession: After Marcy is recaptured by Andrias, following Yunan and Olivia's failed rescue attempt; it proceeds to upload itself into Marcy's body, taking it over to continue their plans.
* DigitalAbomination: While it is physically a robot, that part is only a shell. The real Core is actually the combined intellects of the various rulers of Amphibia preserved in {{Cyberspace}}. It demonstrates this when it transferred from a robotic body to one that was mostly organic.
* DirtyCoward: As expected of a being made from the minds of a bunch of old tyrants scared of their impending mortality. The Core practically begs Andrias to help and is absolutely terrified as Anne obliterates it. We had even seen this fear of death in the episode before; when Sasha cut its connection, it thinks she slashed its chest, and all that [[SmugSnake smugness]] is replaced with panic.
* TheDreaded: The Core is one of the (if not ''the'') most feared entities in Amphibia, even the toads are wary of it despite their usual lack of fear towards the dangerous wildlife.
* EvilCannotComprehendGood: They seem unable to ''get'' what makes people tick on an emotional level, which plays a not-insignificant role in its defeat. They especially seem unable to get that the three girls have undergone CharacterDevelopment, like Sasha moving past her ControlFreak tendencies.
* EvilCounterpart: As the main villain, it serves as an antithesis to the heroes, and especially Anne.
** Whereas Anne, Sasha and Marcy fear change, but eventually embrace it, the Core was so fearful of death (a type of change it couldn't control) that it turned itself into a TranshumanAbomination. Marcy explains that the Core, above all else, fears ''irrelevancy'', so scared of being small and forgettable that it turned itself into a god, a sharp contrast to Anne, who was offered a chance at godhood, but turned it down in favor of becoming a perfectly average human on Earth.
** Adding to the above, it should also be noted that the Core is so stuck in their ways that they would not even consider any other way of life for Amphibia other than be as conquerors, plundering and committing genocide across the worlds of the multiverse, even though with the Calamity Box they could easily have found new sources of power, new resources, and better living conditions for the Amphibians, with plenty to spare for sharing with other peoples they meet across time and space and creating a {{Utopia}} for everyone.
** And to get their way, the Core manipulates, grooms and gaslights everyone for centuries and has everything that goes against its idea destroyed through their plots and pawns. And when it can't get their way, it throws a petulent tantrum like a PsychopathicManchild or EntitledBastard and tries to [[OmnicidalManiac wipe the board out of sheer spite]] rather than accept defeat or change.
* EvilGenius: It is quite literally made up of evil geniuses, and it chose Marcy as its host specifically ''because'' she's the "genius" of the three girls.
* EvilHasABadSenseOfHumor: Darcy makes a very dark joke about saying Grime being disarmed.
* EvilIsBigger: As shown in the page image, Andrias, who is a literal giant compared to everybody else in the show's proportions, is ''dwarfed'' by this thing, at least in its initial mechanical body. Their later forms zigzag however; their form as Darcy is an inversion, given Marcy's tiny stature compared to King Andries, but their planetoid form ''dwarfs their other bigger form by a mile''.
* EvilOldFolks: Turns out to be an entire HiveMind of elderly scholars who attempted to escape death. Beneath their attempts at appearing like an all-knowing machine, they're ultimately a megalomaniacal entity seeking complete domination over Amphibia.
* {{Expy}}: Its sinister DemonicPossession of Marcy using a mask-like helmet, the PsychopathicManchild thought process as a result, EldritchAbomination vibes, ''extremely'' {{Sadist}}ic tendencies and association with a [[ColonyDrop falling]] WeirdMoon brings to mind a mechanical [[VideoGame/TheLegendOfZeldaMajorasMask Majora's Mask]].
* ExtraEyes: It has ''at least'' nine eyes.
* EyeMotifs: The Core's most prominent feature has to be its eyes. Not only is it because of their sinister shape and color, but also because each eye represents a single mind in its collective. Additionally, it has eyes all over the place from the walls of the castle to the ends of its tendrils. It even has one in Andrias's crown which allows it to communicate with him. Its eye also serves as the insignia of the Leviathan army. Being shaped like a diamond, with two black rhombuses on either side giving it the illusion that it is a crown.
* FatalFlaw: Its sadism and arrogance. It ends up getting its connection severed by Sasha because it was too busy delighting in tormenting its victims, twice during the same battle rather than focusing on neutralizing them thoroughly when it has the chance.
* FauxAffablyEvil: While [[GrandTheftMe possessing]] Marcy, as it shares a lot of [[{{Cloudcuckoolander}} her]] particular [[DitzyGenius personality traits]] and [[TheKlutz general demeanor]]. All this does is make it ''immensely'' creepier.
* FinalBoss: The Core serves as the final obstacle for Anne and the Plantars to take on.
* AFormYouAreComfortableWith: When mentally communing with Andrias (and later Marcy), it usually takes the form of its thirteen eyes in a black void. When needing a personal touch, however, it uses an image of its most recent assimilee, Andrias' father Aldrich. This image still has the Core's thirteen eyes, making it extremely unsettling, but it can hide them behind its massive eyebrows.
* GodEmperor: The true ruler of Amphibia, and murals imply it was worshiped like some sort of deity. Aldrich and his forebears implicitly treated the Core's will as akin to a living god's, and the position of 'King' of Amphibia is revealed to be little more than [[DragonInChief a false premise]] to hide the fact that The Core is, and always has been, ruling ''through'' them, with the previous kings eventually [[YouWillBeAssimilated becoming part]] of the ''true'' ruler of Amphibia only upon their passing.
* AGodAmI: When fighting the girls in "The Hardest Thing", it claims to be a god.
* GrandTheftMe: The Core uploads itself into Marcy to have a living host in order to progress its plans, though it was apparently created in the first place precisely to avoid its individual minds' natural death.
* GreaterScopeVillain: While its identity and own plans were unknown at first, we did know that Andrias is helping it with some revenge scheme once the temples are unlocked to stop some mysterious prophecy from being fulfilled. By the end of Season 2, whilst Andrias' villainy has been made apparent to the heroes, [[DramaticIrony none of them are aware that there's an even bigger threat behind Andrias]], with the closest they've come to find out is its eyes present in the mural depicting Andrias' plans, which Sasha clearly doesn't understand what they actually are. In Season 3, it finally does personally meet Marcy, when it takes her over that is. Later on, it's made clear that for all his threats, Andrias is a small fry next to the Core and given its comments, finds him quite pathetic to boot even with all the atrocities he's made signaling the Core as the true overall villain of the series.
* HateSink: Beyond the LaughablyEvil tendencies, it cements itself as this, just after Andrias displayed enough redeeming qualities to make him ineligible for the trope. Not only is it an amalgamation of genocidal imperialists that [[FreudianExcuse made Andrias who he is today]], it shows itself to be a sadistic and smug monster, forcing Andrias to fight when he has a guilt-induced breakdown, cutting off Grime's arm and quipping about it, and slicing Sasha's back. When Sasha cuts its cord, it initially thinks she cut its chest, replacing the arrogant composure with undignified fear, but then regaining that smugness (though not for long) when it thinks she missed. When it's defeated, it then hijacks Amphibia's mechanical moon and intends to [[ColonyDrop use it to destroy the planet]] purely out of [[TakingYouWithMe spite]].
* HiddenAgendaVillain: While we know that its primary goal is subverting a prophecy regarding the three girls, Season 3 shows that it still has plans for Marcy, starting with taking over her body to regain an organic form for itself though it's still unknown what the exact end purpose of this action is meant to lead to.
* ImmortalityImmorality: How immoral you ask? How about enslaving and then brutally experimenting on an entire race of peaceful PlantPeople in order to learn the secret to their healing powers in order to advance their medicine and extend their own lives. Then there's of course taking over the body of an innocent 13-year-old girl without so much as batting an eye(s), something that even ''Andrias'' himself showed hesitation to do. Mother Olm's prophecy outright calls it an "unnatural thing that does not sleep and will not die".
* ImmortalRuler: ''This'' thing is the true ruler of Newtopia, if not all of Amphibia, and they exist as an ageless, mechanical monstrosity that assimilates whichever figurehead into their hive once their service comes to an end.
* ImmortalitySeeker: A successful case of this. Thanks to their technological advancement, the discovery of the [[EnergyBeings Shadowfishes]], and the enslavement of the [[PlantPeople Moss]] [[NatureSpirit People]], Andrias' ancestors were able to develop the necessary knowledge to transcend death through merging their disembodied minds with the Core as their new vessel. In an interesting twist to this, the collective willingly forsakes their immortal and much more durable vessel in favor of Marcy's very mortal form in order to forward its plans. Possibly because they need one of greater mobility.
* {{Irony}}: Whilst the Core is the bigger threat and more dangerous villain than even [[TheHeavy Andrias]], there are several points throughout the climatic episodes that make it clear that despite their overall position of superiorly over him, and the fact that it constantly mocks him for his emotional attachments out of an implied perception that Andrias is an InadequateInheritor of the position of '[[TheDragon King]]', the Core would not be as nearly an effective villain without Andrias' aid.
** Upon first meeting Marcy, once they were alone the Core ordered Andrias to [[MurderIsTheBestSolution immediately kill her]] to avert the Olm prophecy, disregarding her age in favour of the threat she might pose. Not only was Andrias' suggestion of befriending Marcy and her friends and tricking them into de-powering themselves and charging the Calamity Box a far more [[PragmaticVillainy pragmatic and effective solution]], causing multiple problems for the girls and nearly allowing their complete victory if not for Anne's LifesavingMisfortune, when Darcy later has Anne at her mercy and intends to ''actually'' kill her themselves this time, Anne points out that their [[BlackBox lack of understanding]] about the calamity gems and their powers mean that they can't guarantee that killing her won't [[CessationOfExistence erase the energy]] they hope to restore to the Box, [[CantKillYouStillNeedYou a point that Darcy eventually concedes]]. If the Core had had its way from the start it's very likely that it could have sabotaged itself and its eventual plans by killing Marcy outright.
** The Core is effective at manipulating Andrias into [[TheCorrupter embracing his worst actions]] to become a fitting enforcer of their will, but he's the ''only'' one it's capable of influencing, and even that is mainly due to his centuries-long guilt over having lost the Calamity Box and doomed their once-mighty civilisation to gradual decay. When it tries to get underneath the girls' skin using Marcy's memories of them it fails due to it's [[EvilCannotComprehendGood inability to grasp]] their CharacterDevelopment, with Anne turning their claims that she's 'dumber than a bag of rocks' back on them with [[CantKillYouStillNeedYou a point they can't refute]], and their attempts to break Sasha's resolve over how [[NotSoDifferentRemark similar]] they are as fellow [[ControlFreak manipulators]] only further motivate her to keep fighting back harder because of how [[TheAtoner she's no longer that same person]]. Contrast this with Andrias, who ''did'' manage to effectively manipulate the girls into achieving his goals for him, especially Marcy, who could have sent them all home once they'd completed the third temple, by appealing to her desire to keep having fantastical adventures with her friends.
** When fighting as Darcy, they prove to be surprisingly competent at hand-to-hand combat with a SinisterScythe, but are clearly inferior compared to [[AuthorityEqualsAsskicking Andrias' own combat prows]], needing to use the HomeFieldAdvantage inside the shield generator room several times and relying heavily upon [[CombatPragmatist pragmatism]] to overcome their foes, even going down in [[AchillesPowerCord a single hit]] in the end, compared to Andrias' own fight, which sees him basically ''win'' a VictoryByEndurance despite facing an opponent who can ragdoll him normally. And whilst Andrias tends to go [[NoNonsenseNemesis straight for the killing blow with little wind-up]], Darcy [[{{Sadist}} clearly enjoys prolonging the deaths of their victims]], allowing Anne AnyLastWords before they kill her, which she uses to delay her execution instead, and stopping from finishing off Sasha when they sense Andrias [[HeelRealisation losing the will to fight]] in Anne's battle, attempting to enact a VillainOverride on him to finish off Anne, believing that Sasha is too badly wounded to do anything more than helplessly watch her friend die, which only allows her to recover and put Darcy down.
** In "Froggy Little Christmas", they mock Andrias' VillainousBreakdown over failing to kill Anne again as 'pathetic' and unbecoming of a king, but upon their own defeat and thwarting of the earth invasion, they proceed to do ''the exact same thing'', but on a [[SuicidalCosmicTemperTantrum grander scale]], showing how they're NotSoAboveItAll from their servant, and are even more petty and malicious than he could ever be.
* ItIsDehumanizing: Mother Olm calls it an “Unnatural thing that doesn’t sleep and can’t die”, and even Anne calls it “Thing” at one point, just to further empathize its existence as wrong and abominable.
* ItsAllABoutMe: Beneath its claims to try to preserve Amphibia's way of life and prosperity, it ultimately only cares about itself and its own power and immortality.
* KarmicDeath: Anne uses "Amphibia's greatest treasures,"--that is, the Calamity Gems, which generation after generation it used to invade other worlds across the multiverse--to annihilate it and every evil mind making up its MindHive, forever.
* KickTheSonOfABitch: It doesn't mince its words in the slightest when it criticizes Andrias' un-kingly behavior in "Froggy Little Christmas" after he failed to kill Anne, twisting the verbal knife in, and it's overall implied to be a BadBoss towards him. Considering all of the utterly heinous acts Andrias has committed up to this point, it's easy to feel he deserves every second of it. On the other hand, "The Core & The King" makes it clear that the 1000 years Andrias spent connected to the Core enabled it to ''encourage'' his worst traits to make him more [[BlindObedience mindlessly loyal]] to it and its orders, meaning Darcy is criticizing him for flaws in his attitude that ''they'' enabled in the first place. The fact that Andrias' father is part of the collective also gives [[AbusiveParents another]] [[FreudianExcuse dimension]] to Darcy's critique.
* LackOfEmpathy: More than even Andrias himself. Whereas Andrias is implied to have some genuine guilt over what he's been doing, the Core expresses no such reservations. Darcy's immediate response to catching Andrias staring forlornly at his friendship portrait is to smirk slyly and passive-aggressively mock him over what happened between him and his friends, and Darcy is eagerly looking forward to their invasion of Earth.
* LaughablyEvil: "The Core & The King" reveals it to be this, being the head of a genocidal empire made up of the greatest minds of said empire... while also possessing Marcy which made it inherit some of her quirks, such as choosing a name based off of her favorite video game, stuffing its mouth with red velvet cupcakes, and even falling flat on its face at one point.
* LaserBlade: They have both a laser dagger and a laser scythe, both of which are used against Sasha in their final due. When she gives Sasha large slash across the back, the wound is visibly cauterized.
* LotusEaterMachine: It is revealed that they created one for Marcy while they were busy puppeting her body, first a small room filled with puzzles, then a giant library, then a fantasy world where she can go on adventures with Sasha and Anne. An avatar that looks like Aldrich is in charge of keeping her focused on that instead of her fractured memories.
* MasterComputer: Created by converting the minds of Amphibia's previous rulers and thinkers into data and storing it in one large MindHive.
* MechanicalAbomination: The room it resides in is filled with computers sounds, and you can see giant wires attached to the creature when it opens its glowing eyes. [[SubvertedTrope Though]] it turns out to just be the current vessel of The Core, which is more like a technological MindHive rather than some kind of incomprehensible machine.
* MindHive: Andrias reveals it to be "a collection of Amphibia's greatest minds, preserved for all eternity", and "The Core & The King" reveals that these so-called "great" minds include, and implicitly might in actuality ''exclusively be'', the previous monarchs before Andrias. Once it takes over Marcy's body, Marcy always refers to herself in the plural, given the multiple minds uploaded into it.
* TheMindIsAPlaythingOfTheBody: As "Darcy", they've picked up some of Marcy's personality traits and mannerisms, like her klutzy nature. Even the name is short for "Dark Marcy" and is a reference to one of Marcy's favorite video games.
* MindRape: It used a combination of laser projectors and fog to create projections based on Marcy, Yunan, and Olivia's pasts to torment and distract them when the latter two try to break Marcy out of her HealingVat and escape. Disturbingly, it doesn't seem to be able to draw the images directly from their minds, but instead, created them based on the observations it made [[SinisterSurveillance watching them the entire time they've been in Amphibia]].
* MurderIsTheBestSolution: After Andrias meets Marcy, the Core recognizes her as a being from another dimension, and thinks she may be one of the champions mentioned in the prophecy. As such, they want Andrias to kill her to avoid any risk to their plans, however, Andrias rejects the idea and offers an alternative instead.
* MyopicConqueror: Their "conquering" of other worlds is more of a raiding, giving an impression that they're less a MultiversalConqueror and more of a Multiversal ''Pirate'' or ''Bandit''. As far as we see, they have no interest in other worlds beyond the resources and rare specimens they can provide for their own research and furthering their power, strip-mining them bare and moving on to the next in a ViciousCycle.
* NearVillainVictory: They come very close to killing Sasha, at least until they realized Andrias no longer wished to keep fighting.
* NerdInEvilsHelmet: Quite literally, as they are the evil helmet possessing the nerdy Marcy, and after the unnerving impression the Core gave in their first few appearances, "The Core & The King" reveals Darcy has taken in some of Marcy's personality quirks and clumsiness.
* NoNonsenseNemesis: When they first met Marcy and realized she was part of the prophecy foretelling their doom, they told Andrias point blank to kill her on the spot. They drop this trope once they become Darcy.
* NotQuiteDead: Seemingly defeated when Sasha cuts the cord on Darcy's helmet in "All In", but then said helmet later sprouts legs and crawls off.
* NotSoWellIntentionedExtremist: Although in the past it and Aldrich claimed that their MultiversalConqueror actions were merely to preserve the Amphibian way of life, especially since it's implied that Amphibia is a MetalPoorPlanet; planning to ''exterminate humanity'' just to gain easy access to Earth's resources to continue their conquering ways, with the heavy implication that they've done the same thing on other worlds before and kept the full truth from their subjects, along with mistreating the Amphibian citizens in the present as they drain Amphibia dry of its ''own'' resources; proves that they ultimately only care about their own power and immortality. Their actions in "All In" and "The Hardest Thing" reiterate this; not only are they ''very'' clearly [[{{Sadist}} enjoying the pain and destruction that they cause]] during their invasion in the former, but after said invasion is foiled, putting an end to their world-conquering ways for good, and they're trapped in Darcy's helmet, rather than try and change, or hide and plot a comeback, their fear of obsolescence or death means that they try to ''[[ColonyDrop ram Amphibia's moon into the planet]]'' as one final attempt to screw over the heroes.
* OrcusOnHisThrone: For the majority of the series, the Core spends its time hidden beneath the castle, manipulating things from the shadows while Andrias carries out its will. However, this is justified since it has many cables that are attached to the inner chambers of the castle.
* OmnicidalManiac: Its modus operandi during invasions of other worlds, and what it plans to do to Amphibia should it ever lose control.
* PromotionToOpeningTitles: Its eyes can be seen overlooking Marcy's pod in the Season 3 opening's first version and after [[DemonicPossession becoming]] "Darcy" it appears front and center alongside Andrias indicating its promotion to the main antagonist.
* PsychopathicManchild: Possibly even more so than Andrias after possessing Marcy. As a result of absorbing some of Marcy's quirks and using her body, Darcy acts like a goofy teenage girl that just so happens to be a collection of the minds of a brutal empire and wants to exterminate humanity.
* PunnyName: The name "Darcy" is its choice of a combination of "Dark" and "Marcy" as an apparent clever way of calling itself "Dark Marcy" (instead of Andrias suggesting "Mar-Core").
* RedAndBlackAndEvilAllOver: Their initial form is a pitch black machine with over thirteen orange eyes, and when they become Darcy, they put her in an all black outfit with a matching helmet. This becomes more played straight for the final battle, as The Core's orange eyes turn red in sheer rage at their foiled invasion, not to mention their planetoid form being almost entirely red.
* RedEyesTakeWarning: {{Downplayed}}. It has multiple hellishly orange eyes on its spherical body. It gets worse when said eyes are shown on the face-obscuring helm being worn by Marcy, serving as its current vessel.
* RoyalWe: The Core consecutively refers to themselves as "we", which makes sense given they are an amalgam of various different beings. But "The Core & The King" shows the minds within are capable of speaking individually, as Andrias' father does so at the end of the episode.
* {{Sadist}}: Despite the Core's almost purely mechanical and data-based nature before possessing Marcy, the MindHive is still very much capable of feeling emotions, and there are many occasions when they take great pleasure in hurting others.
** The elaborate illusions it crafts against Marcy and Olivia contain details present in their monstrous forms that serve no purpose beyond mocking them for how badly they feel they've failed at protecting what mattered most to them. Olivia's mother turns into a machine-newt hybrid monster belching factory smoke, whose lower half is comprised of polluted earth and ''strewn'' with Amphibian bones, symbolizing how the environmental devastation will kill not only the creatures of Amphibia but the people as well, something that clearly upsets her. The two-headed Anne/Sasha fusion that mocks Marcy for selfishly betraying them and claims her friend wants nothing to do with her anymore has [[FreezeFrameBonus the St James emblem on their chest turn into a heart]] as they do so, symbolizing how much Marcy loved her friendship with the duo and how awful she feels for metaphorically breaking their hearts with her DarkSecret. And whilst not necessary for its plans for Marcy, it has Andrias outline ''exactly'' what's about to happen to her before it begins the conversion process, and keeps itself hidden inside the room for the entirety of Olivia and Yunan's attempted rescue apparently out of [[HopeSpot amusement for their futile efforts]], when it could have physically interfered at any point.
** When Andrias suffers a VillainousBreakdown and throws a childish tantrum over failing to kill Anne again, Darcy mocks him for his 'unkingly' conduct, calling his reaction 'pathetic'. This is despite said emotional outburst being born from the [[PsychopathicManchild same negative traits]] the Core itself explicitly encouraged in Andrias over 1000 years in order to make him a [[BlindObedience more compliant servant]] to it, essentially mocking him for not acting more mature when ''it itself'' encouraged his emotional immaturity as a means of controlling him. The fact that one of the Core's collective minds is Aldrich, Andiras' father and the one he explicitly seeks to impress through the Core, gives another cruel twist to it expressing contempt of him not acting like a proper king would.
** When Darcy sees Andrias shooting a pained glance at the portrait of him, Leif and Barrel together in his childhood, it snidely mock him that it's not the only one that needs to let go of old memories, explicitly {{Gaslighting}} him for his still-painful regret over the implosion of his childhood friendships and how that's still distracting him from his duties as the Core's loyal servant. Its smug grin on Darcy's face explicitly shows it knows this hurts Andrias and it takes amusement in his emotional turmoil, aware that he's too devoted to it now to do anything but loyally serve it and [[VirtueIsWeakness finding twisted fun]] in how he's still hurting after all those years. When Andrias [[LetThePastBurn burns the portrait]] to help re-commit himself towards serving the Core, it adopts a smug SlasherSmile over his actions and briefly lets Aldrich's personality surface from the collective in order to tell Andrias how he's ''[[DamnedByFaintPraise almost]]'' proud of him for doing so, explicitly withholding the approval of his actions that [[WellDoneSonGuy Andrias so craves]] from the Core even as he acts in line with its wishes.
** Whilst it admits that inhabiting Marcy's body caused the Core to start [[TheMindIsAPlaythingOfTheBody exhibiting some of her quirks and mannerisms]], it's implied that it's also deliberately emulating Marcy at times to mock Andrias for his [[MyGodWhatHaveIDone suppressed guilt]] over making her into the Core's vessel, at one point making it clear to him that Marcy's still around, but [[AndIMustScream trapped inside her own mind]] because of what he did.
** In "The Beginning of the End" when Darcy reveals themself before Anne and Sasha, they mock both the girl's failure to stop it as well as their claims that they're still friends with Marcy despite her stranding them in Amphibia, pointing out that from browsing Marcy's memories, it can tell they weren't the most supportive friends to her back on earth, even though neither was actively malicious towards her, pointing out that they ignored or overlooked Marcy's needs and interests and treated her as 'the friend that was just there' which fuelled her poorly thought-out decision to use the Calamity Box. Having more or less already won at that point, it has no logical reason to taunt the girls with their past failings like that beyond it's sadistic pleasure at their regret. It even specifically taunts Anne's intelligence, calling her 'dumber than a bag of rocks' because Anne had previously admitted to Marcy her insecurities with being 'the dumb one' of their trio and it wanted to rub that into her face. It clearly relishes [[HopeCrusher broadcasting the strike team's failure]] to disperse the resistance and when they decide to kill Anne to retrieve the Calamity Gem energy powering her, they're clearly enjoying the chance to gut her with a laser knife. They even allow Anne the opportunity for AnyLastWords before they start cutting into her, clearly not intending to honour any pleas for mercy regardless, just to enjoy the moment more, and whilst Anne manages to successfully reason that they [[CantKillYouStillNeedYou can't afford to kill her just yet]], they're displeased that they've been forced to delay her demise and make it clear that they ''will'' finish the job later.
-->'''Darcy:''' You only bought enough time to watch your planet fall. We look forward to [[TheyWouldCutYouUp dissecting you]]. [[ColdBloodedTorture Alive]].
** This ends up being a major component of its downfall in "All In", it allows itself to be distracted by tormenting its victims, ultimately allowing Sasha to cut the cable on Darcy's helmet.
* SinisterScythe: Darcy wields one with an energy blade in battle against Sasha and Grime.
-->'''Darcy:''' [[BringIt Let's rumble, girlfriend.]]
* SinisterSurveillance: The Core turns out to be capable of communicating directly with Andrias through a device hidden in his CoolCrown, allowing it to warn him when Yunan and Olivia attempt to rescue Marcy. Disturbingly, since it doesn't seem to scan their minds to create the projections it used to MindRape and distract them, it seems like the Core has somehow always been doing this to the inhabitants of Newtopia, even able to bring up Yunan's childhood TraumaButton to distract her.
* SlasherSmile: Well, not it exactly, but rather Marcy, once it assumes direct control of her body.
* TheSociopath: While it wasn't clear if it was even sentient in its giant robot form, once it takes over Marcy and becomes Darcy, they become a textbook example of this trope. [[FauxAffablyEvil Any niceness they display is nothing more than a calculated act]], [[BadBoss they treat even their most trustworthy subordinates as expendable tools]], [[LackOfEmpathy could care less about any lasting damage they do with their actions]], [[ManipulativeBastard gaslits and manipulates everybody they meet in order to get what they want]], [[HopeCrusher sadistically destroy any chance of joy the other characters could have with a big smile]], [[SoreLoser and completely lose their shit once their plan has actually been foiled]].
* SoreLoser: Sasha sums it up as one, since, when it's plans to conquer Earth are thwarted, the Core decides to ram Amphibia's moon into the planet to wipe out all life rather than face obsolescence or destruction.
* SuddenlyVoiced: It speaks after possessing Marcy in "Olivia & Yunan". Prior to then, it appears it could only communicate to Andrias telepathically through the device hidden in his CoolCrown, and its machine form could only produce a horrific screech.
* TermsOfEndangerment: It uses affectionate terms Marcy liked when referring to Sasha and Anne, such as "Girls" and "Girlfriend". It comes across as incredibly creepy and unsettling.
* TranshumanAbomination: That bizarre mechanical body is the shell for the minds of the intelligentsia from Amphibia's lost civilization, including the previous monarchs before Andrias. "The Core & The King" indicates that it's more or less standard practice for the monarchs of Amphibia to have their minds uploaded into the Core when they die, '''if''' they've proven themselves faithful and capable servants during their life.
* TheUnfettered: Did you just lose your chokehold over Amphibia? Destroy it and take the stones to start all over.
* VileVillainSaccharineShow: Its introduction served to subtly indicate things were going to get really bad in the show. Sure enough, its first direct interaction with the heroes ends with it puppeteering Marcy's body after she's been revived and modified into a suitable vessel for it, directly tying it to one of the most [[ImpaledWithExtremePrejudice shockingly]] [[WouldHurtAChild violent]] [[WhamShot scenes]] in the show, with said possession being both painful and likely permanently damaging to Marcy's mind. Even ''Andrias'' was reluctant to go as far as the Core did, trying to talk it out of doing the deed, and it's made clear that as cruel and bitter as Andrias himself is, the Core doesn't even have a shred of empathy or remorse within its cold shell, but it does understand them well enough to gain pleasure from [[{{Sadist}} hurting others]] through them.
* VillainousBreakdown:
** In “The Beginning Of The End” it loses its smug composure once Anne points out a flaw in its logic, that it just assumes that killing her would restore the Calamity Box powers when it could happen the other way around (that power would die with her). This forces the Core to give her a stay of the execution, although it makes her clear it would drain painfully her powers and kill her afterward.
** In “All In” it has an epic one, once Sasha manages to cut the wire that allows it to puppet Marcy, freeing the latter and deactivating its control over the castle in the process. It goes further when its reaction to this is to possess the moon and attempt to destroy everything as one last act of spite. When Andrias rejects its offer of immortality and instead helps fight it, it becomes clearly ''furious'' and screaming at him. Its last moments are spet staring in wide-eyed shock (notably losing its HellishPupils in the process).
* VillainHasAPoint: They're only saying it in order to break the girls' will, but The Core isn't exactly wrong in calling out Sasha and Anne over not being the best of friends to Marcy, especially upon seeing her memories about how their dynamic worked back on Earth.
* VillainTakesAnInterest: DoubleSubversion. The Core initially doesn't care about Marcy whatsoever, only recognizing her as a girl spoken in the prophecy and ordering Andrias to kill her. However, once Marcy proves herself to be actually quite smart, The Core starts to become interested in her, eventually deciding to make her their newest host in order to foil the prophecy.
* TheVoiceless: Whilst Andrias speaks to it, it doesn't respond before the scene ends, and it goes the whole season without making another direct appearance, leaving it unclear how it communicates with Andrias. Until "Olivia & Yunan" where it speaks through Marcy after uploading its MindHive to her. Said episode also reveals that it was communicating with Andrias telepathically through a device hidden in his CoolCrown, making it clear that it ''can't'' talk directly, at least, not in its machine form. By its next appearance, it starts speaking full sentences after possessing Marcy, fully averting the trope.
* VoiceOfTheLegion: When the Core speaks through Marcy's body after possessing her, her voice echoes with a mixture of male and female. Fitting since the Core is a MindHive. It especially helps since one of the Core's minds was Andrias' father, making it seem like his voice is interspersed with Marcy's.
* WalkingSpoiler: Its first appearance shows Andrias' apparent relationship to it (calling it "my lord"), and is a clear hint that the King has more sinister motivations and that his master is a far greater threat than him. A lot of its true nature revealed in the Core's next few appearances are ''major'' spoilers for Andrias' plans and motivations and the past of Amphibia's MultiversalConqueror civilization.
* WhatTheHellHero: When 'Darcy' reveals herself to Anne and Sasha, it mocks their demands to 'let their friend go', pointing out that it has access to all of Marcy's memories, and perusing them it can tell that despite what they claim, they weren't actually the best of friends towards her, not showing an interest in her nerdy hobbies or being supportive towards her, which is partly what fuelled Marcy's [[ATragedyOfImpulsiveness decision to transport them to Amphibia]] in the first place. Anne and Sasha even discussed this very point beforehand, admitting it was a [[VillainHasAPoint legitimate failing on their behalf]]. However, it's clear that the Core is doing this to [[{{Sadist}} mock them and scorn their failings]] both at stopping it or being proper friends to Marcy, rather than any moral issues.
* WhyDontYouJustShootHim:
** Once Darcy has Anne in her clutches, she quickly tries to kill the girl for good to avoid the threat that her powers poses. She only stays her hand because Anne manages to successfully argue that they don't know what her death will do to the Gem she's connected with.
** Before she impressed it with her intelligence, the Core wanted to kill Marcy to avoid the threat of the prophecy. Andrias only managed to convince it otherwise by coming up with the plan to drain the powers of the Gems from the girls at the temples, allowing them to reclaim the Box's power in the process.
* WouldHurtAChild: Its first appearance with the heroes has it implicitly performing MindRape on Marcy, alongside Yunan and Olivia, using the young girl's guilt about her mistake in tricking her friends into getting TrappedInAnotherWorld to keep her occupied in the room until Andrias can arrive and corner them. When it shows itself to the trio, it immediately grabs Marcy ''by the face'' and straps her into the chair to allow it to download itself into her, something that is shown to be ''extremely'' painful for Marcy.
* XanatosGambit: When the Core senses Yunan and Olivia trying to rescue Marcy, it traps them in their worst nightmares to stop them in their tracks for quick capture, but even if that were to fail, it had already summoned King Andrias to the room to take care of them himself.

to:

* ThirteenIsUnlucky: It has 13 eyes (10 when using Marcy's body) and it's the overall GreaterScopeVillain. And it is quite possibly the deadliest foe the heroes will have to face.
* AbusivePrecursors: An entire HiveMind of them, as they're a collection of all of Newtopia's previous rulers, and as the series goes on, it becomes clear they could care less about their descendants; not only do they show complete disinterest in the damage they cause to the Amphibians, but they treat King Andrias, the latest king and their most trustworthy servant, like a tool to be used and discarded.
* AchillesPowerCord: The Core is often attached to at least one cable. These cables when connected to the castle allow it to control and oversee
For its minions. But once it had been severed, they lose all the power they once had and are trapped inside of the helmet that allowed them to puppet Marcy.
* TheAgeless: Their mechanical body has stayed the same for millenia, not even getting rusty across the time Andrias was a young boy until he became an adult.
* AlmightyIdiot: In their huge robot form, the only thing The Core can do is slightly move and emit a horrible screech. Then it takes over Marcy's body...
* AmbiguousDisorder: During
tropes see its brief appearance in "Froggy Little Christmas", it's shown using Marcy's icosahedron as a stimming toy, the initial shot even focusing on the hand holding the die. Given that Marcy herself seems (or, given the poor girl's current fate, seemed) to be autistic, this suggests that possessing her has caused it to take on those traits. "The Core & The King" confirms that indwelling Marcy's body has caused The Core to [[TheMindIsAPlaythingOfTheBody exhibit a lot of her personality traits, likes and mannerisms]], to the point that it basically comes across as still Marcy inside, but filtered through the Core's evil intentions. It tends to [[VillainousBreakdown lose composure]] when its plans have gone awry, and it goes into a complete meltdown when it realizes Sasha has cut its AchillesPowerCord and it's about to lose control of Marcy's body.
* AmbitionIsEvil: They wish to foil the prophecy about the calamity stones in order to keep using them to continue their conquest of the multiverse forever.
* AndIMustScream: {{Implied}}. The Core using Marcy's body as its host is a prime example of this, as while it is in control of her movements and memories, the real Marcy is trapped "in a little room" inside her own mind with no way out. "All In" shows Marcy is trapped in a LotusEaterMachine while the Core is controlling her.
* AncientEvil: They were around back when Andrias was still young, millenia ago, and are even older than ''that'' given they've assimilated the minds of most, if not all, of Newtopia's former rulers up to that point.
* AnimalMotif: Cephalopods, specifically octopi. The Core has a spherical body (or rather ''head'') with six to eight [[CombatTentacles tentacles]] protruding from it and huge eyes. Then it's revealed that the thing is not a singular consciousness but a collective of genius-level minds preserved in a cybernetic shell, not unlike how a single octopus is essentially a MindHive whose tentacles think and act semi-independently.
* {{Archenemy}}: While initially completely unknown to the girls, once they take over Marcy's body, The Core becomes a VIP on their hitlist; Marcy due to it taking over her body, and Anne and Sasha as a consequence of that action.
* ArtEvolution: In "Olivia & Yunan" and "Froggy Little Christmas", the eyes of Darcy's helmet closely resembled the Core's original body. In "The Core & The King" onwards, the eyes are now rhombus-shaped a darker red and the main three eyes have pupils.
* TheAssimilator: It assimilates the mind of whoever is currently ruling Newtopia to add it to its hive mind as they hand the throne to the next generation. They eventually decide to add ''Marcy'' into said hive in order to further throw a wrench at the prophecy.
* AssimilationBackfire: Taking over Marcy's body and becoming Darcy did allow The Core to become more mobile than before and actually speak for once, but they traded what was possibly a NighInvulnerable metallic body for Marcy's weak, nerdy one, not to mention that the tube connected to them becomes ''much'' easier to slice since Marcy's much smaller than their previous form.
* AssholeVictim: They're utterly wiped out by Anne using the three calamity stones' powers at once, but given they not only gaslit Andrias and used Marcy's body for their plans for conquest, but ruled Newtopia with an iron fist from the shadows in untold millenia, hardly any tears were shed.
* AuthorityEqualsAsskicking: You would think that inhabiting a frail, nerdy body with an extremely obvious weak spot would make them an easy target, right? Wrong. Just like Andrias, they are a surprisingly good fighter, as they were able to hold their own against Sasha and Grime. It even has various tricks at its disposal that it can us such as a energy scythe, combat tentacles, and even illusions.
* BadBoss: Slightly implied, it forced Andrias to use his somewhat genuine friend Marcy as its vessel, and later on in "Froggy Little Christmas" it calls him a pathetic excuse of a king when he throws a hissy fit following his latest plan failing to kill Anne. It’s not helped by the fact that one of those minds is his ''father''. In "All In", it outright tells Andrias he can forgets about joining his father and his ancestors should he fails to capture Anne.
* BigBad: The Core decides to officially take charge in the latter half of Season 3, directly leading the invasion, with Andrias as the muscle. And since the Core was the one who came up with the invasion plans, manipulated, groomed and gaslit Andrias into the person he is nowadays and is ultimately the biggest threat, it was the true main antagonist of the series all along but only now has it had the chance to truly be at the forefront of the villainy.
* BrainUploading: The Core is a collection of highly intelligent minds (implicitly actually just the minds of a long line of death-fearing despots) uploaded into a mechanical vessel in order to preserve them for some great ambition. Once it has Marcy in its clutches, it then transfers its entire collection into the poor girl.
* BreakingSpeech: A favored tactic of its, especially using Marcy's memories to [[WhatTheHellHero call Anne and Sasha out on their toxic behavior]] and telling them every dark thought Marcy ever had about them. During its final duel with Sasha, it tries to knock her off her game, though at that point Sasha has gone through enough CharacterDevelopment and is too hyperfocused on saving Marcy that she can {{No Sell}} it completely.
* BringIt: Is all too eager to battle Sasha and Grime.
-->'''Darcy:''' Let's rumble, girlfriend.
* TheChainOfHarm: With the implication that it holds the minds of all of Amphibia's past rulers, it's possible to interpret that the monarchy has been a succession of grooming the monarchs to act as figureheads for their rule before uploading them to their collective.
* CheatedDeathDiedAnyway: The Core's entire ''existence'' is supposed to allow the greatest minds and rulers of Newtopia to exist beyond death and rule forever, but once Anne uses all of the calamity stones' powers at once, they get destroyed for good.
* ControlFreak: Self-admits to being one in "All In"; they want everything to go exactly as they want, and once they see even the ''slightest'' of deviation, they try to put things back in order. "The Hardest Thing" makes it even more notable by having them grow ''beyond pissed'' when their plans are completely derailed.
* CoolHelmet: As Darcy, its helmet has mechanical branches that look similar to its tentacles from their original form. The helmet also has a ''very'' long wire that stretches far. Once it's severed from Marcy's head and the Core (as Darcy) is seemingly vanquished, it secretly takes the time to escape by having the helmet grow spider legs and scuttle off to plan a counterattack while the heroes are distracted. It even has ''rocket thrusters'', which is revealed in "The Hardest Thing".
* CombatTentacles: Mechanical tentacles which it uses to maneuver and grapple its victims. They're part of their body in their huge robot form, and become telekinetically manipulated by it in their Darcy form.
* CrazyPrepared: During the peak of Amphibia civilization, it finished a project on the moon to enable it to crash the moon into Amphibia’s surface and steal the stones as a last resort if it could not keep control over Amphibia’s people.
* CuttingTheKnot: When they met Marcy for the first time, they told Andrias to kill her before she could become a thorn on their side. However, Andrias convinced them to spare her for another purpose...
* DemonicPossession: After Marcy is recaptured by Andrias, following Yunan and Olivia's failed rescue attempt; it proceeds to upload itself into Marcy's body, taking it over to continue their plans.
* DigitalAbomination: While it is physically a robot, that part is only a shell. The real Core is actually the combined intellects of the various rulers of Amphibia preserved in {{Cyberspace}}. It demonstrates this when it transferred from a robotic body to one that was mostly organic.
* DirtyCoward: As expected of a being made from the minds of a bunch of old tyrants scared of their impending mortality. The Core practically begs Andrias to help and is absolutely terrified as Anne obliterates it. We had even seen this fear of death in the episode before; when Sasha cut its connection, it thinks she slashed its chest, and all that [[SmugSnake smugness]] is replaced with panic.
* TheDreaded: The Core is one of the (if not ''the'') most feared entities in Amphibia, even the toads are wary of it despite their usual lack of fear towards the dangerous wildlife.
* EvilCannotComprehendGood: They seem unable to ''get'' what makes people tick on an emotional level, which plays a not-insignificant role in its defeat. They especially seem unable to get that the three girls have undergone CharacterDevelopment, like Sasha moving past her ControlFreak tendencies.
* EvilCounterpart: As the main villain, it serves as an antithesis to the heroes, and especially Anne.
** Whereas Anne, Sasha and Marcy fear change, but eventually embrace it, the Core was so fearful of death (a type of change it couldn't control) that it turned itself into a TranshumanAbomination. Marcy explains that the Core, above all else, fears ''irrelevancy'', so scared of being small and forgettable that it turned itself into a god, a sharp contrast to Anne, who was offered a chance at godhood, but turned it down in favor of becoming a perfectly average human on Earth.
** Adding to the above, it should also be noted that the Core is so stuck in their ways that they would not even consider any other way of life for Amphibia other than be as conquerors, plundering and committing genocide across the worlds of the multiverse, even though with the Calamity Box they could easily have found new sources of power, new resources, and better living conditions for the Amphibians, with plenty to spare for sharing with other peoples they meet across time and space and creating a {{Utopia}} for everyone.
** And to get their way, the Core manipulates, grooms and gaslights everyone for centuries and has everything that goes against its idea destroyed through their plots and pawns. And when it can't get their way, it throws a petulent tantrum like a PsychopathicManchild or EntitledBastard and tries to [[OmnicidalManiac wipe the board out of sheer spite]] rather than accept defeat or change.
* EvilGenius: It is quite literally made up of evil geniuses, and it chose Marcy as its host specifically ''because'' she's the "genius" of the three girls.
* EvilHasABadSenseOfHumor: Darcy makes a very dark joke about saying Grime being disarmed.
* EvilIsBigger: As shown in the page image, Andrias, who is a literal giant compared to everybody else in the show's proportions, is ''dwarfed'' by this thing, at least in its initial mechanical body. Their later forms zigzag however; their form as Darcy is an inversion, given Marcy's tiny stature compared to King Andries, but their planetoid form ''dwarfs their other bigger form by a mile''.
* EvilOldFolks: Turns out to be an entire HiveMind of elderly scholars who attempted to escape death. Beneath their attempts at appearing like an all-knowing machine, they're ultimately a megalomaniacal entity seeking complete domination over Amphibia.
* {{Expy}}: Its sinister DemonicPossession of Marcy using a mask-like helmet, the PsychopathicManchild thought process as a result, EldritchAbomination vibes, ''extremely'' {{Sadist}}ic tendencies and association with a [[ColonyDrop falling]] WeirdMoon brings to mind a mechanical [[VideoGame/TheLegendOfZeldaMajorasMask Majora's Mask]].
* ExtraEyes: It has ''at least'' nine eyes.
* EyeMotifs: The Core's most prominent feature has to be its eyes. Not only is it because of their sinister shape and color, but also because each eye represents a single mind in its collective. Additionally, it has eyes all over the place from the walls of the castle to the ends of its tendrils. It even has one in Andrias's crown which allows it to communicate with him. Its eye also serves as the insignia of the Leviathan army. Being shaped like a diamond, with two black rhombuses on either side giving it the illusion that it is a crown.
* FatalFlaw: Its sadism and arrogance. It ends up getting its connection severed by Sasha because it was too busy delighting in tormenting its victims, twice during the same battle rather than focusing on neutralizing them thoroughly when it has the chance.
* FauxAffablyEvil: While [[GrandTheftMe possessing]] Marcy, as it shares a lot of [[{{Cloudcuckoolander}} her]] particular [[DitzyGenius personality traits]] and [[TheKlutz general demeanor]]. All this does is make it ''immensely'' creepier.
* FinalBoss: The Core serves as the final obstacle for Anne and the Plantars to take on.
* AFormYouAreComfortableWith: When mentally communing with Andrias (and later Marcy), it usually takes the form of its thirteen eyes in a black void. When needing a personal touch, however, it uses an image of its most recent assimilee, Andrias' father Aldrich. This image still has the Core's thirteen eyes, making it extremely unsettling, but it can hide them behind its massive eyebrows.
* GodEmperor: The true ruler of Amphibia, and murals imply it was worshiped like some sort of deity. Aldrich and his forebears implicitly treated the Core's will as akin to a living god's, and the position of 'King' of Amphibia is revealed to be little more than [[DragonInChief a false premise]] to hide the fact that The Core is, and always has been, ruling ''through'' them, with the previous kings eventually [[YouWillBeAssimilated becoming part]] of the ''true'' ruler of Amphibia only upon their passing.
* AGodAmI: When fighting the girls in "The Hardest Thing", it claims to be a god.
* GrandTheftMe: The Core uploads itself into Marcy to have a living host in order to progress its plans, though it was apparently created in the first place precisely to avoid its individual minds' natural death.
* GreaterScopeVillain: While its identity and own plans were unknown at first, we did know that Andrias is helping it with some revenge scheme once the temples are unlocked to stop some mysterious prophecy from being fulfilled. By the end of Season 2, whilst Andrias' villainy has been made apparent to the heroes, [[DramaticIrony none of them are aware that there's an even bigger threat behind Andrias]], with the closest they've come to find out is its eyes present in the mural depicting Andrias' plans, which Sasha clearly doesn't understand what they actually are. In Season 3, it finally does personally meet Marcy, when it takes her over that is. Later on, it's made clear that for all his threats, Andrias is a small fry next to the Core and given its comments, finds him quite pathetic to boot even with all the atrocities he's made signaling the Core as the true overall villain of the series.
* HateSink: Beyond the LaughablyEvil tendencies, it cements itself as this, just after Andrias displayed enough redeeming qualities to make him ineligible for the trope. Not only is it an amalgamation of genocidal imperialists that [[FreudianExcuse made Andrias who he is today]], it shows itself to be a sadistic and smug monster, forcing Andrias to fight when he has a guilt-induced breakdown, cutting off Grime's arm and quipping about it, and slicing Sasha's back. When Sasha cuts its cord, it initially thinks she cut its chest, replacing the arrogant composure with undignified fear, but then regaining that smugness (though not for long) when it thinks she missed. When it's defeated, it then hijacks Amphibia's mechanical moon and intends to [[ColonyDrop use it to destroy the planet]] purely out of [[TakingYouWithMe spite]].
* HiddenAgendaVillain: While we know that its primary goal is subverting a prophecy regarding the three girls, Season 3 shows that it still has plans for Marcy, starting with taking over her body to regain an organic form for itself though it's still unknown what the exact end purpose of this action is meant to lead to.
* ImmortalityImmorality: How immoral you ask? How about enslaving and then brutally experimenting on an entire race of peaceful PlantPeople in order to learn the secret to their healing powers in order to advance their medicine and extend their own lives. Then there's of course taking over the body of an innocent 13-year-old girl without so much as batting an eye(s), something that even ''Andrias'' himself showed hesitation to do. Mother Olm's prophecy outright calls it an "unnatural thing that does not sleep and will not die".
* ImmortalRuler: ''This'' thing is the true ruler of Newtopia, if not all of Amphibia, and they exist as an ageless, mechanical monstrosity that assimilates whichever figurehead into their hive once their service comes to an end.
* ImmortalitySeeker: A successful case of this. Thanks to their technological advancement, the discovery of the [[EnergyBeings Shadowfishes]], and the enslavement of the [[PlantPeople Moss]] [[NatureSpirit People]], Andrias' ancestors were able to develop the necessary knowledge to transcend death through merging their disembodied minds with the Core as their new vessel. In an interesting twist to this, the collective willingly forsakes their immortal and much more durable vessel in favor of Marcy's very mortal form in order to forward its plans. Possibly because they need one of greater mobility.
* {{Irony}}: Whilst the Core is the bigger threat and more dangerous villain than even [[TheHeavy Andrias]], there are several points throughout the climatic episodes that make it clear that despite their overall position of superiorly over him, and the fact that it constantly mocks him for his emotional attachments out of an implied perception that Andrias is an InadequateInheritor of the position of '[[TheDragon King]]', the Core would not be as nearly an effective villain without Andrias' aid.
** Upon first meeting Marcy, once they were alone the Core ordered Andrias to [[MurderIsTheBestSolution immediately kill her]] to avert the Olm prophecy, disregarding her age in favour of the threat she might pose. Not only was Andrias' suggestion of befriending Marcy and her friends and tricking them into de-powering themselves and charging the Calamity Box a far more [[PragmaticVillainy pragmatic and effective solution]], causing multiple problems for the girls and nearly allowing their complete victory if not for Anne's LifesavingMisfortune, when Darcy later has Anne at her mercy and intends to ''actually'' kill her themselves this time, Anne points out that their [[BlackBox lack of understanding]] about the calamity gems and their powers mean that they can't guarantee that killing her won't [[CessationOfExistence erase the energy]] they hope to restore to the Box, [[CantKillYouStillNeedYou a point that Darcy eventually concedes]]. If the Core had had its way from the start it's very likely that it could have sabotaged itself and its eventual plans by killing Marcy outright.
** The Core is effective at manipulating Andrias into [[TheCorrupter embracing his worst actions]] to become a fitting enforcer of their will, but he's the ''only'' one it's capable of influencing, and even that is mainly due to his centuries-long guilt over having lost the Calamity Box and doomed their once-mighty civilisation to gradual decay. When it tries to get underneath the girls' skin using Marcy's memories of them it fails due to it's [[EvilCannotComprehendGood inability to grasp]] their CharacterDevelopment, with Anne turning their claims that she's 'dumber than a bag of rocks' back on them with [[CantKillYouStillNeedYou a point they can't refute]], and their attempts to break Sasha's resolve over how [[NotSoDifferentRemark similar]] they are as fellow [[ControlFreak manipulators]] only further motivate her to keep fighting back harder because of how [[TheAtoner she's no longer that same person]]. Contrast this with Andrias, who ''did'' manage to effectively manipulate the girls into achieving his goals for him, especially Marcy, who could have sent them all home once they'd completed the third temple, by appealing to her desire to keep having fantastical adventures with her friends.
** When fighting as Darcy, they prove to be surprisingly competent at hand-to-hand combat with a SinisterScythe, but are clearly inferior compared to [[AuthorityEqualsAsskicking Andrias' own combat prows]], needing to use the HomeFieldAdvantage inside the shield generator room several times and relying heavily upon [[CombatPragmatist pragmatism]] to overcome their foes, even going down in [[AchillesPowerCord a single hit]] in the end, compared to Andrias' own fight, which sees him basically ''win'' a VictoryByEndurance despite facing an opponent who can ragdoll him normally. And whilst Andrias tends to go [[NoNonsenseNemesis straight for the killing blow with little wind-up]], Darcy [[{{Sadist}} clearly enjoys prolonging the deaths of their victims]], allowing Anne AnyLastWords before they kill her, which she uses to delay her execution instead, and stopping from finishing off Sasha when they sense Andrias [[HeelRealisation losing the will to fight]] in Anne's battle, attempting to enact a VillainOverride on him to finish off Anne, believing that Sasha is too badly wounded to do anything more than helplessly watch her friend die, which only allows her to recover and put Darcy down.
** In "Froggy Little Christmas", they mock Andrias' VillainousBreakdown over failing to kill Anne again as 'pathetic' and unbecoming of a king, but upon their own defeat and thwarting of the earth invasion, they proceed to do ''the exact same thing'', but on a [[SuicidalCosmicTemperTantrum grander scale]], showing how they're NotSoAboveItAll from their servant, and are even more petty and malicious than he could ever be.
* ItIsDehumanizing: Mother Olm calls it an “Unnatural thing that doesn’t sleep and can’t die”, and even Anne calls it “Thing” at one point, just to further empathize its existence as wrong and abominable.
* ItsAllABoutMe: Beneath its claims to try to preserve Amphibia's way of life and prosperity, it ultimately only cares about itself and its own power and immortality.
* KarmicDeath: Anne uses "Amphibia's greatest treasures,"--that is, the Calamity Gems, which generation after generation it used to invade other worlds across the multiverse--to annihilate it and every evil mind making up its MindHive, forever.
* KickTheSonOfABitch: It doesn't mince its words in the slightest when it criticizes Andrias' un-kingly behavior in "Froggy Little Christmas" after he failed to kill Anne, twisting the verbal knife in, and it's overall implied to be a BadBoss towards him. Considering all of the utterly heinous acts Andrias has committed up to this point, it's easy to feel he deserves every second of it. On the other hand, "The Core & The King" makes it clear that the 1000 years Andrias spent connected to the Core enabled it to ''encourage'' his worst traits to make him more [[BlindObedience mindlessly loyal]] to it and its orders, meaning Darcy is criticizing him for flaws in his attitude that ''they'' enabled in the first place. The fact that Andrias' father is part of the collective also gives [[AbusiveParents another]] [[FreudianExcuse dimension]] to Darcy's critique.
* LackOfEmpathy: More than even Andrias himself. Whereas Andrias is implied to have some genuine guilt over what he's been doing, the Core expresses no such reservations. Darcy's immediate response to catching Andrias staring forlornly at his friendship portrait is to smirk slyly and passive-aggressively mock him over what happened between him and his friends, and Darcy is eagerly looking forward to their invasion of Earth.
* LaughablyEvil: "The Core & The King" reveals it to be this, being the head of a genocidal empire made up of the greatest minds of said empire... while also possessing Marcy which made it inherit some of her quirks, such as choosing a name based off of her favorite video game, stuffing its mouth with red velvet cupcakes, and even falling flat on its face at one point.
* LaserBlade: They have both a laser dagger and a laser scythe, both of which are used against Sasha in their final due. When she gives Sasha large slash across the back, the wound is visibly cauterized.
* LotusEaterMachine: It is revealed that they created one for Marcy while they were busy puppeting her body, first a small room filled with puzzles, then a giant library, then a fantasy world where she can go on adventures with Sasha and Anne. An avatar that looks like Aldrich is in charge of keeping her focused on that instead of her fractured memories.
* MasterComputer: Created by converting the minds of Amphibia's previous rulers and thinkers into data and storing it in one large MindHive.
* MechanicalAbomination: The room it resides in is filled with computers sounds, and you can see giant wires attached to the creature when it opens its glowing eyes. [[SubvertedTrope Though]] it turns out to just be the current vessel of The Core, which is more like a technological MindHive rather than some kind of incomprehensible machine.
* MindHive: Andrias reveals it to be "a collection of Amphibia's greatest minds, preserved for all eternity", and "The Core & The King" reveals that these so-called "great" minds include, and implicitly might in actuality ''exclusively be'', the previous monarchs before Andrias. Once it takes over Marcy's body, Marcy always refers to herself in the plural, given the multiple minds uploaded into it.
* TheMindIsAPlaythingOfTheBody: As "Darcy", they've picked up some of Marcy's personality traits and mannerisms, like her klutzy nature. Even the name is short for "Dark Marcy" and is a reference to one of Marcy's favorite video games.
* MindRape: It used a combination of laser projectors and fog to create projections based on Marcy, Yunan, and Olivia's pasts to torment and distract them when the latter two try to break Marcy out of her HealingVat and escape. Disturbingly, it doesn't seem to be able to draw the images directly from their minds, but instead, created them based on the observations it made [[SinisterSurveillance watching them the entire time they've been in Amphibia]].
* MurderIsTheBestSolution: After Andrias meets Marcy, the Core recognizes her as a being from another dimension, and thinks she may be one of the champions mentioned in the prophecy. As such, they want Andrias to kill her to avoid any risk to their plans, however, Andrias rejects the idea and offers an alternative instead.
* MyopicConqueror: Their "conquering" of other worlds is more of a raiding, giving an impression that they're less a MultiversalConqueror and more of a Multiversal ''Pirate'' or ''Bandit''. As far as we see, they have no interest in other worlds beyond the resources and rare specimens they can provide for their own research and furthering their power, strip-mining them bare and moving on to the next in a ViciousCycle.
* NearVillainVictory: They come very close to killing Sasha, at least until they realized Andrias no longer wished to keep fighting.
* NerdInEvilsHelmet: Quite literally, as they are the evil helmet possessing the nerdy Marcy, and after the unnerving impression the Core gave in their first few appearances, "The Core & The King" reveals Darcy has taken in some of Marcy's personality quirks and clumsiness.
* NoNonsenseNemesis: When they first met Marcy and realized she was part of the prophecy foretelling their doom, they told Andrias point blank to kill her on the spot. They drop this trope once they become Darcy.
* NotQuiteDead: Seemingly defeated when Sasha cuts the cord on Darcy's helmet in "All In", but then said helmet later sprouts legs and crawls off.
* NotSoWellIntentionedExtremist: Although in the past it and Aldrich claimed that their MultiversalConqueror actions were merely to preserve the Amphibian way of life, especially since it's implied that Amphibia is a MetalPoorPlanet; planning to ''exterminate humanity'' just to gain easy access to Earth's resources to continue their conquering ways, with the heavy implication that they've done the same thing on other worlds before and kept the full truth from their subjects, along with mistreating the Amphibian citizens in the present as they drain Amphibia dry of its ''own'' resources; proves that they ultimately only care about their own power and immortality. Their actions in "All In" and "The Hardest Thing" reiterate this; not only are they ''very'' clearly [[{{Sadist}} enjoying the pain and destruction that they cause]] during their invasion in the former, but after said invasion is foiled, putting an end to their world-conquering ways for good, and they're trapped in Darcy's helmet, rather than try and change, or hide and plot a comeback, their fear of obsolescence or death means that they try to ''[[ColonyDrop ram Amphibia's moon into the planet]]'' as one final attempt to screw over the heroes.
* OrcusOnHisThrone: For the majority of the series, the Core spends its time hidden beneath the castle, manipulating things from the shadows while Andrias carries out its will. However, this is justified since it has many cables that are attached to the inner chambers of the castle.
* OmnicidalManiac: Its modus operandi during invasions of other worlds, and what it plans to do to Amphibia should it ever lose control.
* PromotionToOpeningTitles: Its eyes can be seen overlooking Marcy's pod in the Season 3 opening's first version and after [[DemonicPossession becoming]] "Darcy" it appears front and center alongside Andrias indicating its promotion to the main antagonist.
* PsychopathicManchild: Possibly even more so than Andrias after possessing Marcy. As a result of absorbing some of Marcy's quirks and using her body, Darcy acts like a goofy teenage girl that just so happens to be a collection of the minds of a brutal empire and wants to exterminate humanity.
* PunnyName: The name "Darcy" is its choice of a combination of "Dark" and "Marcy" as an apparent clever way of calling itself "Dark Marcy" (instead of Andrias suggesting "Mar-Core").
* RedAndBlackAndEvilAllOver: Their initial form is a pitch black machine with over thirteen orange eyes, and when they become Darcy, they put her in an all black outfit with a matching helmet. This becomes more played straight for the final battle, as The Core's orange eyes turn red in sheer rage at their foiled invasion, not to mention their planetoid form being almost entirely red.
* RedEyesTakeWarning: {{Downplayed}}. It has multiple hellishly orange eyes on its spherical body. It gets worse when said eyes are shown on the face-obscuring helm being worn by Marcy, serving as its current vessel.
* RoyalWe: The Core consecutively refers to themselves as "we", which makes sense given they are an amalgam of various different beings. But "The Core & The King" shows the minds within are capable of speaking individually, as Andrias' father does so at the end of the episode.
* {{Sadist}}: Despite the Core's almost purely mechanical and data-based nature before possessing Marcy, the MindHive is still very much capable of feeling emotions, and there are many occasions when they take great pleasure in hurting others.
** The elaborate illusions it crafts against Marcy and Olivia contain details present in their monstrous forms that serve no purpose beyond mocking them for how badly they feel they've failed at protecting what mattered most to them. Olivia's mother turns into a machine-newt hybrid monster belching factory smoke, whose lower half is comprised of polluted earth and ''strewn'' with Amphibian bones, symbolizing how the environmental devastation will kill not only the creatures of Amphibia but the people as well, something that clearly upsets her. The two-headed Anne/Sasha fusion that mocks Marcy for selfishly betraying them and claims her friend wants nothing to do with her anymore has [[FreezeFrameBonus the St James emblem on their chest turn into a heart]] as they do so, symbolizing how much Marcy loved her friendship with the duo and how awful she feels for metaphorically breaking their hearts with her DarkSecret. And whilst not necessary for its plans for Marcy, it has Andrias outline ''exactly'' what's about to happen to her before it begins the conversion process, and keeps itself hidden inside the room for the entirety of Olivia and Yunan's attempted rescue apparently out of [[HopeSpot amusement for their futile efforts]], when it could have physically interfered at any point.
** When Andrias suffers a VillainousBreakdown and throws a childish tantrum over failing to kill Anne again, Darcy mocks him for his 'unkingly' conduct, calling his reaction 'pathetic'. This is despite said emotional outburst being born from the [[PsychopathicManchild same negative traits]] the Core itself explicitly encouraged in Andrias over 1000 years in order to make him a [[BlindObedience more compliant servant]] to it, essentially mocking him for not acting more mature when ''it itself'' encouraged his emotional immaturity as a means of controlling him. The fact that one of the Core's collective minds is Aldrich, Andiras' father and the one he explicitly seeks to impress through the Core, gives another cruel twist to it expressing contempt of him not acting like a proper king would.
** When Darcy sees Andrias shooting a pained glance at the portrait of him, Leif and Barrel together in his childhood, it snidely mock him that it's not the only one that needs to let go of old memories, explicitly {{Gaslighting}} him for his still-painful regret over the implosion of his childhood friendships and how that's still distracting him from his duties as the Core's loyal servant. Its smug grin on Darcy's face explicitly shows it knows this hurts Andrias and it takes amusement in his emotional turmoil, aware that he's too devoted to it now to do anything but loyally serve it and [[VirtueIsWeakness finding twisted fun]] in how he's still hurting after all those years. When Andrias [[LetThePastBurn burns the portrait]] to help re-commit himself towards serving the Core, it adopts a smug SlasherSmile over his actions and briefly lets Aldrich's personality surface from the collective in order to tell Andrias how he's ''[[DamnedByFaintPraise almost]]'' proud of him for doing so, explicitly withholding the approval of his actions that [[WellDoneSonGuy Andrias so craves]] from the Core even as he acts in line with its wishes.
** Whilst it admits that inhabiting Marcy's body caused the Core to start [[TheMindIsAPlaythingOfTheBody exhibiting some of her quirks and mannerisms]], it's implied that it's also deliberately emulating Marcy at times to mock Andrias for his [[MyGodWhatHaveIDone suppressed guilt]] over making her into the Core's vessel, at one point making it clear to him that Marcy's still around, but [[AndIMustScream trapped inside her own mind]] because of what he did.
** In "The Beginning of the End" when Darcy reveals themself before Anne and Sasha, they mock both the girl's failure to stop it as well as their claims that they're still friends with Marcy despite her stranding them in Amphibia, pointing out that from browsing Marcy's memories, it can tell they weren't the most supportive friends to her back on earth, even though neither was actively malicious towards her, pointing out that they ignored or overlooked Marcy's needs and interests and treated her as 'the friend that was just there' which fuelled her poorly thought-out decision to use the Calamity Box. Having more or less already won at that point, it has no logical reason to taunt the girls with their past failings like that beyond it's sadistic pleasure at their regret. It even specifically taunts Anne's intelligence, calling her 'dumber than a bag of rocks' because Anne had previously admitted to Marcy her insecurities with being 'the dumb one' of their trio and it wanted to rub that into her face. It clearly relishes [[HopeCrusher broadcasting the strike team's failure]] to disperse the resistance and when they decide to kill Anne to retrieve the Calamity Gem energy powering her, they're clearly enjoying the chance to gut her with a laser knife. They even allow Anne the opportunity for AnyLastWords before they start cutting into her, clearly not intending to honour any pleas for mercy regardless, just to enjoy the moment more, and whilst Anne manages to successfully reason that they [[CantKillYouStillNeedYou can't afford to kill her just yet]], they're displeased that they've been forced to delay her demise and make it clear that they ''will'' finish the job later.
-->'''Darcy:''' You only bought enough time to watch your planet fall. We look forward to [[TheyWouldCutYouUp dissecting you]]. [[ColdBloodedTorture Alive]].
** This ends up being a major component of its downfall in "All In", it allows itself to be distracted by tormenting its victims, ultimately allowing Sasha to cut the cable on Darcy's helmet.
* SinisterScythe: Darcy wields one with an energy blade in battle against Sasha and Grime.
-->'''Darcy:''' [[BringIt Let's rumble, girlfriend.]]
* SinisterSurveillance: The Core turns out to be capable of communicating directly with Andrias through a device hidden in his CoolCrown, allowing it to warn him when Yunan and Olivia attempt to rescue Marcy. Disturbingly, since it doesn't seem to scan their minds to create the projections it used to MindRape and distract them, it seems like the Core has somehow always been doing this to the inhabitants of Newtopia, even able to bring up Yunan's childhood TraumaButton to distract her.
* SlasherSmile: Well, not it exactly, but rather Marcy, once it assumes direct control of her body.
* TheSociopath: While it wasn't clear if it was even sentient in its giant robot form, once it takes over Marcy and becomes Darcy, they become a textbook example of this trope. [[FauxAffablyEvil Any niceness they display is nothing more than a calculated act]], [[BadBoss they treat even their most trustworthy subordinates as expendable tools]], [[LackOfEmpathy could care less about any lasting damage they do with their actions]], [[ManipulativeBastard gaslits and manipulates everybody they meet in order to get what they want]], [[HopeCrusher sadistically destroy any chance of joy the other characters could have with a big smile]], [[SoreLoser and completely lose their shit once their plan has actually been foiled]].
* SoreLoser: Sasha sums it up as one, since, when it's plans to conquer Earth are thwarted, the Core decides to ram Amphibia's moon into the planet to wipe out all life rather than face obsolescence or destruction.
* SuddenlyVoiced: It speaks after possessing Marcy in "Olivia & Yunan". Prior to then, it appears it could only communicate to Andrias telepathically through the device hidden in his CoolCrown, and its machine form could only produce a horrific screech.
* TermsOfEndangerment: It uses affectionate terms Marcy liked when referring to Sasha and Anne, such as "Girls" and "Girlfriend". It comes across as incredibly creepy and unsettling.
* TranshumanAbomination: That bizarre mechanical body is the shell for the minds of the intelligentsia from Amphibia's lost civilization, including the previous monarchs before Andrias. "The Core & The King" indicates that it's more or less standard practice for the monarchs of Amphibia to have their minds uploaded into the Core when they die, '''if''' they've proven themselves faithful and capable servants during their life.
* TheUnfettered: Did you just lose your chokehold over Amphibia? Destroy it and take the stones to start all over.
* VileVillainSaccharineShow: Its introduction served to subtly indicate things were going to get really bad in the show. Sure enough, its first direct interaction with the heroes ends with it puppeteering Marcy's body after she's been revived and modified into a suitable vessel for it, directly tying it to one of the most [[ImpaledWithExtremePrejudice shockingly]] [[WouldHurtAChild violent]] [[WhamShot scenes]] in the show, with said possession being both painful and likely permanently damaging to Marcy's mind. Even ''Andrias'' was reluctant to go as far as the Core did, trying to talk it out of doing the deed, and it's made clear that as cruel and bitter as Andrias himself is, the Core doesn't even have a shred of empathy or remorse within its cold shell, but it does understand them well enough to gain pleasure from [[{{Sadist}} hurting others]] through them.
* VillainousBreakdown:
** In “The Beginning Of The End” it loses its smug composure once Anne points out a flaw in its logic, that it just assumes that killing her would restore the Calamity Box powers when it could happen the other way around (that power would die with her). This forces the Core to give her a stay of the execution, although it makes her clear it would drain painfully her powers and kill her afterward.
** In “All In” it has an epic one, once Sasha manages to cut the wire that allows it to puppet Marcy, freeing the latter and deactivating its control over the castle in the process. It goes further when its reaction to this is to possess the moon and attempt to destroy everything as one last act of spite. When Andrias rejects its offer of immortality and instead helps fight it, it becomes clearly ''furious'' and screaming at him. Its last moments are spet staring in wide-eyed shock (notably losing its HellishPupils in the process).
* VillainHasAPoint: They're only saying it in order to break the girls' will, but The Core isn't exactly wrong in calling out Sasha and Anne over not being the best of friends to Marcy, especially upon seeing her memories about how their dynamic worked back on Earth.
* VillainTakesAnInterest: DoubleSubversion. The Core initially doesn't care about Marcy whatsoever, only recognizing her as a girl spoken in the prophecy and ordering Andrias to kill her. However, once Marcy proves herself to be actually quite smart, The Core starts to become interested in her, eventually deciding to make her their newest host in order to foil the prophecy.
* TheVoiceless: Whilst Andrias speaks to it, it doesn't respond before the scene ends, and it goes the whole season without making another direct appearance, leaving it unclear how it communicates with Andrias. Until "Olivia & Yunan" where it speaks through Marcy after uploading its MindHive to her. Said episode also reveals that it was communicating with Andrias telepathically through a device hidden in his CoolCrown, making it clear that it ''can't'' talk directly, at least, not in its machine form. By its next appearance, it starts speaking full sentences after possessing Marcy, fully averting the trope.
* VoiceOfTheLegion: When the Core speaks through Marcy's body after possessing her, her voice echoes with a mixture of male and female. Fitting since the Core is a MindHive. It especially helps since one of the Core's minds was Andrias' father, making it seem like his voice is interspersed with Marcy's.
* WalkingSpoiler: Its first appearance shows Andrias' apparent relationship to it (calling it "my lord"), and is a clear hint that the King has more sinister motivations and that his master is a far greater threat than him. A lot of its true nature revealed in the Core's next few appearances are ''major'' spoilers for Andrias' plans and motivations and the past of Amphibia's MultiversalConqueror civilization.
* WhatTheHellHero: When 'Darcy' reveals herself to Anne and Sasha, it mocks their demands to 'let their friend go', pointing out that it has access to all of Marcy's memories, and perusing them it can tell that despite what they claim, they weren't actually the best of friends towards her, not showing an interest in her nerdy hobbies or being supportive towards her, which is partly what fuelled Marcy's [[ATragedyOfImpulsiveness decision to transport them to Amphibia]] in the first place. Anne and Sasha even discussed this very point beforehand, admitting it was a [[VillainHasAPoint legitimate failing on their behalf]]. However, it's clear that the Core is doing this to [[{{Sadist}} mock them and scorn their failings]] both at stopping it or being proper friends to Marcy, rather than any moral issues.
* WhyDontYouJustShootHim:
** Once Darcy has Anne in her clutches, she quickly tries to kill the girl for good to avoid the threat that her powers poses. She only stays her hand because Anne manages to successfully argue that they don't know what her death will do to the Gem she's connected with.
** Before she impressed it with her intelligence, the Core wanted to kill Marcy to avoid the threat of the prophecy. Andrias only managed to convince it otherwise by coming up with the plan to drain the powers of the Gems from the girls at the temples, allowing them to reclaim the Box's power in the process.
* WouldHurtAChild: Its first appearance with the heroes has it implicitly performing MindRape on Marcy, alongside Yunan and Olivia, using the young girl's guilt about her mistake in tricking her friends into getting TrappedInAnotherWorld to keep her occupied in the room until Andrias can arrive and corner them. When it shows itself to the trio, it immediately grabs Marcy ''by the face'' and straps her into the chair to allow it to download itself into her, something that is shown to be ''extremely'' painful for Marcy.
* XanatosGambit: When the Core senses Yunan and Olivia trying to rescue Marcy, it traps them in their worst nightmares to stop them in their tracks for quick capture, but even if that were to fail, it had already summoned King Andrias to the room to take care of them himself.
[[Characters/AmphibiaTheCore character page]]
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[[Characters/AmphibiaMainCharacters Plantar Family]] ([[Characters/AmphibiaAnneBoonchuy Anne Boonchuy]]) | [[Characters/AmphibiaWartwood Wartwood]] | [[Characters/AmphibiaToads Toads]] ([[Characters/AmphibiaSashaWaybright Sasha Waybright]]) | '''Newtopia''' ([[Characters/AmphibiaKingAndrias King Andrias]], [[Characters/AmphibiaMarcyWu Marcy Wu]]) | [[Characters/AmphibiaEarth Earth]] | [[Characters/AmphibiaAntagonists Other Antagonists]] | [[Characters/AmphibiaOther Other Characters]]]]-]]]

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[[Characters/AmphibiaMainCharacters Plantar Family]] ([[Characters/AmphibiaAnneBoonchuy Anne Boonchuy]]) | [[Characters/AmphibiaWartwood Wartwood]] | [[Characters/AmphibiaToads Toads]] ([[Characters/AmphibiaSashaWaybright Sasha Waybright]]) | '''Newtopia''' ([[Characters/AmphibiaKingAndrias King Andrias]], [[Characters/AmphibiaMarcyWu Marcy Wu]]) Wu]], [[Characters/AmphibiaTheCore The Core]]) | [[Characters/AmphibiaEarth Earth]] | [[Characters/AmphibiaAntagonists Other Antagonists]] | [[Characters/AmphibiaOther Other Characters]]]]-]]]
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* BadBoss: Slightly implied, it forced Andrias to use his somewhat genuine friend Marcy as its vessel, and later on in "Froggy Little Christmas" it calls him a pathetic excuse of a king when he throws a hissy fit following his latest plan failing to kill Anne. It’s not helped by the fact that one of those minds is his ''father''.

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* BadBoss: Slightly implied, it forced Andrias to use his somewhat genuine friend Marcy as its vessel, and later on in "Froggy Little Christmas" it calls him a pathetic excuse of a king when he throws a hissy fit following his latest plan failing to kill Anne. It’s not helped by the fact that one of those minds is his ''father''. In "All In", it outright tells Andrias he can forgets about joining his father and his ancestors should he fails to capture Anne.
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* DirtyCoward: As expected of a being made from the minds of a bunch of old men scared of their impending mortality. The Core practically begs Andrias to help and is absolutely terrified as Anne obliterates it. We had even seen this fear of death in the episode before; when Sasha cut its connection, it thinks she slashed its chest, and all that [[SmugSnake smugness]] is replaced with panic.

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* DirtyCoward: As expected of a being made from the minds of a bunch of old men tyrants scared of their impending mortality. The Core practically begs Andrias to help and is absolutely terrified as Anne obliterates it. We had even seen this fear of death in the episode before; when Sasha cut its connection, it thinks she slashed its chest, and all that [[SmugSnake smugness]] is replaced with panic.
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* FaceHeelTurn: They're the only newts that side with Andrias and are never shown to betray him or abandon his side despite his abuse towards them and also in spite of spending the past season as allies of Marcy. [[spoiler:They end turning good once the invasion is thwarted, but like Andrias are punished with doing field work for their compliance once things are settled.]]
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* TheAssimilator: It assimilates the mind of whoever king currently rules Newtopia to add it to its hive mind as they hand the throne to the next generation. They eventually decide to add ''Marcy'' into said hive in order to further throw a wrench at the prophecy.

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* TheAssimilator: It assimilates the mind of whoever king is currently rules ruling Newtopia to add it to its hive mind as they hand the throne to the next generation. They eventually decide to add ''Marcy'' into said hive in order to further throw a wrench at the prophecy.
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* RubberMan: The season 3 opening shows it can extend its arms to reach out and grab or slash at its targets. This backfires on it in "Fight at the Museum", when its attempt to impale Anne on its clawed limb results in its hand getting stuck in a wall directly beneath a french guillotine exhibit, giving Hop Pop an opportunity to sever the arm.
* ScarilyCompetentTracker: Andrias outfitted it with wide-range scanning technology and had it analyse a sample of the blue Calamity Box energy left behind in the Gem, allowing it to triangulate Anne's exact position within moments of it arriving on Earth. The antenna that it was tracking her with gets broken when Anne briefly activates her powers against it, meaning once it's repaired, [[DramaPreservingHandicap it can no longer instantly resume trying to kill her wherever she goes]]. Instead, Cloak-Bot is forced to use a nearby radio tower to hack into the city's surveillance systems, using either security cameras or phone calls to identify Anne or the Plantars' positions from that point onwards. The final fight with it gets kicked off when it detects Frobo's reactivation, allowing it to identify Anne's home and directly attack her.

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* RubberMan: The season 3 opening shows it can extend its arms to reach out and grab or slash at its targets. This backfires on it in "Fight at the Museum", when its attempt to impale Anne on its clawed limb results in its hand getting stuck in a wall directly beneath a french guillotine exhibit, giving Hop Pop an opportunity to sever the arm.
arm. It can also squeeze into tight places when it is unable to use its camouflage.
* ScarilyCompetentTracker: Andrias outfitted it with wide-range scanning technology and had it analyse analyze a sample of the blue Calamity Box energy left behind in the Gem, allowing it to triangulate Anne's exact position within moments of it arriving on Earth. The antenna that it was tracking her with gets broken when Anne briefly activates her powers against it, meaning once it's repaired, [[DramaPreservingHandicap it can no longer instantly resume trying to kill her wherever she goes]]. Instead, Cloak-Bot is forced to use a nearby radio tower to hack into the city's surveillance systems, using either security cameras or phone calls to identify Anne or the Plantars' positions from that point onwards. The final fight with it gets kicked off when it detects Frobo's reactivation, allowing it to identify Anne's home and directly attack her.


* FreudianExcuse: Possibly. Given how long the core has existed in his bloodline, it’s implied he’s treating Andrias the same way his own father treated him. That said, if that is true it falls flat, as Aldrich has embraced who he is and the genocidal ambitions of The Core.
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* DirtyCoward: As expected of being made from the minds of a bunch of old men scared of their impending mortality. The Core practically begs Andrias to help and is absolutely terrified as Anne obliterates it. We had even seen this fear of death in the episode before; when Sasha cut its connection, it thinks she slashed its chest, and all that [[SmugSnake smugness]] is replaced with panic.

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* DirtyCoward: As expected of a being made from the minds of a bunch of old men scared of their impending mortality. The Core practically begs Andrias to help and is absolutely terrified as Anne obliterates it. We had even seen this fear of death in the episode before; when Sasha cut its connection, it thinks she slashed its chest, and all that [[SmugSnake smugness]] is replaced with panic.
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This is a Trivia trope


* PlayingAgainstType: Of all the characters Creator/KristenSchaal has voiced, Bella's the most grounded of the bunch as she is considered the opposite of both Mabel Pines and Louise Belcher.
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* ActorAllusion: They're brainy characters, build some machinery, and while they're mostly told apart by their skin colors, Bartley is purple, akin to character Sam Riegel [[WesternAnimation/TeenageMutantNinjaTurtles2003 played less than 2 decades prior]].

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* ActorAllusion: They're brainy characters, build some machinery, and while they're mostly told apart by their skin colors, Bartley is purple, akin to another character Sam Riegel [[WesternAnimation/TeenageMutantNinjaTurtles2003 played less than 2 decades prior]].
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* InterspeciesRomance: Performs a mating dance for Bessie in "The First Temple", which Bessie seems to enjoy and even blush. [[spoiler:In the series finale they have not only gotten together but have even sired a little [[MixAndMatchCritters Sparrow-Snail.]]]]

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* InterspeciesRomance: Performs a mating dance for Bessie in "The First Temple", which Bessie seems to enjoy and even blush. [[spoiler:In the series finale they have not only gotten together but have even sired a [[BabiesEverAfter sired]] some little [[MixAndMatchCritters Sparrow-Snail.Sparrow-Snail's.]]]]
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* AbusivePrecursors: An entire HiveMind of them, as they're a collection of all of Newtopia's previous rulers, and as the series goes on, it becomes clear they could care less about their descendants; not only do they show complete disinterest in the damage they cause to the Amphibians, but they treat King Andrias, the latest king and their most trustworthy servant, like a tool to be used and discarded.
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* EvilOldFolks: Turns out to be an entire HiveMind of elderly scholars who attempted to escape death. Beneath their attempts at appearing like an all-knowing machine, they're ultimately a megalomaniacal entity seeking complete domination over Amphibia.
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* CoolHelmet: As Darcy, its helmet has mechanical branches that look similar to its tentacles from their original form. The helmet also has a ''very'' long wire that stretches far. Once it's severed from Marcy's head and the Core (as Darcy) is seemingly vanquished, it secretly takes the time to escape by having the helmet grow spider legs and scuttle off to plan a counterattack while the heroes are distracted.

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* CoolHelmet: As Darcy, its helmet has mechanical branches that look similar to its tentacles from their original form. The helmet also has a ''very'' long wire that stretches far. Once it's severed from Marcy's head and the Core (as Darcy) is seemingly vanquished, it secretly takes the time to escape by having the helmet grow spider legs and scuttle off to plan a counterattack while the heroes are distracted. It even has ''rocket thrusters'', which is revealed in "The Hardest Thing".



* GodEmperor: The true ruler of Amphibia, and murals imply it was worshiped like some sort of deity. Aldrich and his forebears implicitly treated the Core's will as akin to a living god's, and the position of 'King' of Amphbia is revealed to be little more than [[DragonInChief a false premise]] to hide the fact that The Core is, and always has been, ruling ''through'' them, with the previous kings eventually [[YouWillBeAssimilated becoming part]] of the ''true'' ruler of Amphibia only upon their passing.

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* GodEmperor: The true ruler of Amphibia, and murals imply it was worshiped like some sort of deity. Aldrich and his forebears implicitly treated the Core's will as akin to a living god's, and the position of 'King' of Amphbia Amphibia is revealed to be little more than [[DragonInChief a false premise]] to hide the fact that The Core is, and always has been, ruling ''through'' them, with the previous kings eventually [[YouWillBeAssimilated becoming part]] of the ''true'' ruler of Amphibia only upon their passing.
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* TheSociopath: While it wasn't clear if it was even sentient in its giant robot form, once it takes over Marcy and becomes Darcy, they become a textbook example of this trope. [[FauxAffablyEvil Any niceness they display is nothing more than a calculated act]], [[BadBoss they treat even their most trustworthy subordinates as expendable tools]]. [[LackOfEmpathy could care less about any lasting damage they do with their actions]], [[ManipulativeBastard gaslits and manipulates everybody they meet in order to get what they want]], [[HopeCrusher sadistically destroy any chance of joy the other characters could have with a big smile]], [[SoreLoser and completely lose their shit once their plan has actually been foiled]].

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* TheSociopath: While it wasn't clear if it was even sentient in its giant robot form, once it takes over Marcy and becomes Darcy, they become a textbook example of this trope. [[FauxAffablyEvil Any niceness they display is nothing more than a calculated act]], [[BadBoss they treat even their most trustworthy subordinates as expendable tools]]. tools]], [[LackOfEmpathy could care less about any lasting damage they do with their actions]], [[ManipulativeBastard gaslits and manipulates everybody they meet in order to get what they want]], [[HopeCrusher sadistically destroy any chance of joy the other characters could have with a big smile]], [[SoreLoser and completely lose their shit once their plan has actually been foiled]].

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[[caption-width-right:350:[[labelnote:Click here to see the Core's planetoid form]]https://static.tvtropes.org/pmwiki/pub/images/thecoreplanet.png\\
[[/labelnote]]]]

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[[caption-width-right:350:[[labelnote:Click here to see the Core's planetoid moon form]]https://static.tvtropes.org/pmwiki/pub/images/thecoreplanet.png\\
[[/labelnote]]]]
org/pmwiki/pub/images/mooncore.png[[/labelnote]]]]
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Fixing Link


* VillainTakesInterest: DoubleSubversion. The Core initially doesn't care about Marcy whatsoever, only recognizing her as a girl spoken in the prophecy and ordering Andrias to kill her. However, once Marcy proves herself to be actually quite smart, The Core starts to become interested in her, eventually deciding to make her their newest host in order to foil the prophecy.

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* VillainTakesInterest: VillainTakesAnInterest: DoubleSubversion. The Core initially doesn't care about Marcy whatsoever, only recognizing her as a girl spoken in the prophecy and ordering Andrias to kill her. However, once Marcy proves herself to be actually quite smart, The Core starts to become interested in her, eventually deciding to make her their newest host in order to foil the prophecy.

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* DirtyCoward: As expected of being made from the minds of a bunch of old men scared of their impending mortality. The Core practically begs Andrias to help and is absolutely terrified as Anne obliterates it.

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* DirtyCoward: As expected of being made from the minds of a bunch of old men scared of their impending mortality. The Core practically begs Andrias to help and is absolutely terrified as Anne obliterates it. We had even seen this fear of death in the episode before; when Sasha cut its connection, it thinks she slashed its chest, and all that [[SmugSnake smugness]] is replaced with panic.


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* {{Hypocrite}}: Calls the olms cowards in his rant about why Newtopia shouldn't stop using the Gems. When faced with true death in the finale, he shows his [[DirtyCoward true colors]].
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Fixing grammar.


* ItsAllABoutMe: Beneath it's claims to try to preserve Amphibia's way of life and prosperity, it ultimately only cares about itself and its own power and immortality.

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* ItsAllABoutMe: Beneath it's its claims to try to preserve Amphibia's way of life and prosperity, it ultimately only cares about itself and its own power and immortality.

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* DigitalAbomination: While it is physically a robot, that part is only a shell. The real Core is actually the combined intellects of the various rulers of Amphibia preserved in {{Cyberspace}}. It demonstrates this when it transferred from a robotic body to one that was mostly organic.


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* DigitalAbomination: While it is physically a robot, that part is only a shell. The real Core is actually the combined intellects of the various rulers of Amphibia preserved in {{Cyberspace}}. It demonstrates this when it transferred from a robotic body to one that was mostly organic.
* DirtyCoward: As expected of being made from the minds of a bunch of old men scared of their impending mortality. The Core practically begs Andrias to help and is absolutely terrified as Anne obliterates it.


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* DirtyCoward: It’s his voice specifically begging for Andrias’ help before sharing the collective terror of his ancestors as they’re blasted to bits.


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* FauxAffablyEvil: Comes off as a wise figure, but is nothing more then an abusive, genocidal coward.


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* FreudianExcuse: Possibly. Given how long the core has existed in his bloodline, it’s implied he’s treating Andrias the same way his own father treated him. That said, if that is true it falls flat, as Aldrich has embraced who he is and the genocidal ambitions of The Core.


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* TheSociopath: A cold, abusive and genocidal monster who only cares about his power.


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* JerkWithAHeartOfGold: She’s vicious and arrogant, but has standards and genuinely cares for her people.


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* NiceGirl: Is polite and cordial to most everyone.

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