Characters / Digimon Survive Enemies

Digimon Survive Main Character Index
Humans | Monster Allies | Enemies

Independent

Monsters that are not affiliated with the Kenzoku and target the children for their own reasons.

Dokugumon

A sinister race of monster that has taken over the abandoned schoolhouse, coating it with its webs.

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• Arc Villain: Dealing with it and securing the schoolhouse as a temporary base is the focus of Part 1.
• Degraded Boss: After the Dokugumon in Part 1 are dealt with, others of that type are encountered as mere grunts serving Arukenimon.
• Spiders Are Scary: It's a large spider monster that webs up Aoi and/or Minoru with the intention of devouring them.
• Status Infliction Attack: Expect to be poisoned at some point during the fight by its Venom Blast attack. Especially since the party fights two packs of Dokugumon during the battle.
• Starter Villain: The first major antagonistic monster the kids encounter.

Fangmon

The leader of a gang of monsters that considers the students prey to be toyed with.

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• Arc Villain: Dealing with him trying to hunt down Shuuji and Saki for sport is the focus of Part 2.
• Sacrificial Lion: He ends up being a victim of the fog, just to showcase only not the threat of the fog, but also the main goal of The Kenzoku in the first place.
• Savage Wolves: An antagonistic wolf monster who hunts down the human characters for his own pleasure.
• Super-Persistent Predator: He's hounding Shuuji and Saki since the start of Part 2, and once the others coming look for them, sets his sights on them as well. When defeated at the dam he limps away, but is shown to be waiting for them at the forest, only to have been caught by the fog before their arrival.
• Unwitting Instigator of Doom: By throwing the Professor off the dam, he appears to have killed the man right in front of most of the children, who then presumed their only adult and parental figure is dead. This act is what begins Ryo and Shuuji's mental unraveling and descent into madness, which ultimately culminates in their respective deaths. Even worse is it's all for nothing because the professor is actually alive and was just around the place Shuuji died.

Lord of the Underworld (UNMARKED SPOILERS)

Plutomon (Aoi Shibuya + Labramon)

At the end of Aoi's sanity in the Wrathful Route, she and Labramon ran into a dying Piedmon. Believing Piedmon would cooperate with her to fight the Master as an ally, Aoi absent-mindedly orders Labramon to heal him only to be repaid by beaten to near-death alongside Labramon. This broke her completely and she fused with Labramon to dark evolve into Plutomon, an insane monster who seeks to enforce her own version of "harmony" by merging humans and Kemonogami into her, forcing the survivors to put her down.

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• Adaptational Villainy: While Plutomon is no saint, he punished evil Digimon in lore, even if the good Digimon are at odds with it. Here, she's an insane monster who intends on merging both worlds.
• Assimilation Plot: Aoi's plan for making sure her friends will stay safe is to have them merge with her, and later later extends this idea to both Worlds, intending to remake them in her image. Renamon however, suggests that she just wants to kill everyone and is more of an Omnicidal Maniac.
• Breaking Old Trends: Unlike other Dark Evolutions who become rampaging beasts and mere shells of their former selves, Aoi-as-Plutomon is completely sapient and can speak very fluently, and her mind is decidedly Aoi's in spite of her insane ramblings. Plutomon is also a natural member of Labramon's evolution line, while those who undergo Dark Evolutions prior evolve into deviations that look absolutely wrong.
• Dark Is Evil: Plutomon is a Dark Evolution of Labramon after she merges with Aoi. Unlike Wendigomon however, it is less of a mindless monstrosity and more of an intelligent and willing force of destruction with Aoi's will, akin to GulusGammamon.
• Death of Personality: Once Aoi biomerges with Labramon, the latter is basically dead, as Aoi has full control over her form.
• Dying as Yourself: Upon being defeated, her personality returns to being the usual Aoi before she passed on for good, much to everyone's sadness.
• Everybody Hates Hades: Subverted. Plutomon might be the Hades of Digimon, but Aoi as Plutomon means well. The problem is she is not well.
• Evil Sounds Deep: Coupled with Power Makes Your Voice Deep. As Plutomon, Labramon's voice takes on a more raspy, deeper pitch. Ultimately downplayed in the evil aspect since Plutomon is on your side if you're the one using it.
• Face–Monster Turn: After Piedmon offs whatever little is left of her sanity, Aoi biomerges with Labramon and becomes Plutomon, which warps her personality into being willing to kill others and try to control both worlds.
• Fighting Your Friend: Considering Plutomon is the cumulation of Aoi's downward spiral into insanity, the survivor's fight with her is essentially them putting down whatever's left of what used to be their Team Mom.
• Final Boss: She's the last opponent faced on the Wrathful route. Notably, you fight the Master hijacking Plutomon first, but on the second phase of that fight Plutomon herself fights you on foot.
• Foreshadowing: Not entirely obvious at first, but Labramon's Champion and Ultimate evolutions Dobermon and Cerberusmon belong to the same evolution line as Plutomon, a monster with ties to the Olympos XII. Come the Wrathful Route, and Labramon evolves into exactly that.
• Fusion Dance: After Piedmon mortally wounds Aoi during the Wrathful route, Aoi biomerges with Labramon and becomes Plutomon.
• If You Kill Him, You Will Be Just Like Him!: Piedmon deserved it, but killing him as Plutomon gets Aoi to Jump Off The Slippery Slope. HARD. Whatever she planned for both worlds there, it was no different from what Piedmon/Boltboutamon attempted in the Harmonious Route.
• Irony: Aoi is unaware that Renamon has affected her with illusions, which made her sanity much worse than he intended. So as Plutomon, she absorbed her partner, thus she got her revenge on Renamon without even knowing.
• Mad God: Plutomon is on par with the Olympos 12, who are considered deities, and Aoi is well and truly insane in this state.
• Mercy Kill: Implied. The game doesn't state it, but the trophy for beating her as the Wrathful Route's final encounter is called "So Sorry, Sweet Aoi...", making it look like as if you're putting Aoi out of her misery.
• Nothing Is Scarier: When the party follows Plutomon to the Master's lair, they are horrified by the unnatural emptiness of the room. The place should've been filled with the Kenzoku, but they had all been assimilated by Plutomon and no trace was left behind. According to Renamon, these Kenzoku are Deader than Dead after what Plutomon did to them.
• Olympus Mons: Plutomon's power is said to rival that of the Olympos XII. In a New Game Plus after a Wrathful run, Labramon can Mega Evolve into Plutomon with zero repercussions.
• Omnicidal Maniac: Implied. According to Renamon, the Kenzoku Plutomon consumed are not simply trapped inside her alive, they have their mind, body and soul eradicated and leave only faint traces of them being there. This suggests that she doesn't simply absorb the people and/or monsters into her alive, she kills all of them and is too insane to care.
• O.O.C. Is Serious Business: The first indicator the group gets that Aoi is decidedly not her usual self after becoming Plutomon is her casually obliterating Piedmon without a moment's hesitation, something far more ruthless than Aoi would ever do normally.
• Take Up My Sword: Aoi's dream for co-existence between Kemonogami and humans is carried on by Takuma and the others after her death.
• The Resenter: Plutomon isn't just Aoi's despair, grief, and desire for harmony, but her resentment towards others who heap stuff on her and use her. This results in Plutomon being much more condescending and spiteful in her way of talking to others, as well as being a bit of a Control Freak.
• Transhuman Treachery: After being brutalized by Piedmon, Aoi fused herself with Labramon and turned into Plutomon, a barely-recognizable monster who attempts to merge with both worlds.
• Vocal Dissonance: She's an Roman god of the underworld with obviously masculine body features, but she still speaks in Aoi's own voice with a grainy filter, unlike Free Plutomon who more appropriately uses a masculine voice clip shared with monsters like WarGreymon.
• Was Once a Man: It's hard to believe that this thing used to be Aoi. Takuma and co. are just as shocked when they first meet her.
• Well-Intentioned Extremist: Through Aoi's biomerge with Labramon as Plutomon, she decides the best way to protect her friends and make her dream of co-existence with monsters and humans a reality is to pull an Assimilation Plot and remake both the Human World and Kemonogami World in her own image. Too bad it's implied that she just wants to kill everyone and is too insane to even care about the consequences.
• Xanatos Gambit: Much like Piedmon as Boltboutamon, Aoi as Plutomon pulls a brilliant one by willingly allowing the Master to absorb her so she could take control from within after the Master faced resistance from the kids. Also like Piedmon, her plan fails because Takuma and the others were stronger than she expected.

The Kenzoku

A group of evil monsters that have been sacrificing any human child that wanders into their world for the purpose of saving it.

All spoilers in Garurumon, the Dark Leader, the Traitor, Puppetmon, the remnants and the Master's folders are unmarked. You Have Been Warned.

In general

• Dark Is Evil: A portion of their leading branch are Virus-type monsters, all of whom have malicious personalities. While they are serious about saving their World, they also have zero qualms in torturing the children for little reason other than amusement.
• Equal-Opportunity Evil: In the other hand, based on the Mooks they bring with them, they're not picky in hiring monsters from the other realm. Anything arranging from monsters that are often played as antagonists like Dokugumon or Gazimon to heroic monsters like Magnadramon or HeracleKabuterimon aren't off the recruitment list.
• No Name Given: The group itself lacks a name and are only referred to in-game as monsters led by Piedmon or Puppetmon.
• Right for the Wrong Reasons: As explained in the Moral route, while their human sacrifices do work in that they stave off the fog threatening to swallow up the other world. What they fail to understand is that it isn't the sacrifices themselves that drive off the fog, but the strong emotions produced by said sacrifices, as the Professor states the other world thrives off powerful emotions.
• Religion of Evil: If you remove all the fantastic elements, they are essentially a shamanic tribe ordaining human sacrifices to appease their God and prevent his judgement, with Arukenimon being the shamaness of sorts.
• Teeth-Clenched Teamwork: While Monzaemon is shown to be willing to work with the others, Arukenimon makes it clear she will not accept help from any of them unless absolutely necessary or if their leader orders her to.
• Well-Intentioned Extremist: They sacrifice human children to remove the fog and preserve their world. As despicable and needlessly cruel as they are, their methods seem to work as the fog recedes and any areas swallowed up by it are restored to normal once a child is sacrificed.

Kenzoku

Mysterious lifeforms serving the Master, they drag humans and monsters alike to the fog for him. The 1st Rank Kenzoku take the form of purple blobs with four arms and white linings on their body, the 3rd ranks take the form of lizards with red lines, and the 10th rank being deep green pillars with masks on their faces. They become active after the diverging routes, where most of the Master's Kemonogami minions are either dead or missing.

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• Dark Is Evil: A huge portion of these are either weak to light or use dark attacks (the super ultimate regular variants in particular recycling Boltboutamon and Plutomon's attacks), and they do most of the dirty work killing children in the fog.
• Elite Mook: The Mega variants are some of the strongest enemies in the entire game and might even be packed with debuffs or healing moves. In the Truthful Route, there are even Super Ultimate regular Kenzoku with Plutomon and Boltboutamon's attacks!
• Fusion Dance: Near the end of the Moral Route, the Master fuses several Kenzoku onto Miyuki's body which he uses as his vessel. This creates a Miyuki Kenzoku that he has full control of.
• Mook Depletion: It's mentioned the Master doesn't actually have unlimited Kenzoku, and after the fight at the library or Second Island, he's running low. This is the reason he goes silent until the kids actually come after him.
• Outside-Context Problem: They are the closest to things like the D-Reaper, Eaters or Mecha Rogue X in this game.
• The Spook: Unlike other non-Digimon lifeforms in other series, nowhere is it stated what Kenzoku even are. All we know is they are ordered to drag people into the fog and sacrifice them to the Master and that's it.
• Super-Persistent Predator: If one of these things laid their eyes on someone, there's a 99.9% chance they will end up dead because they WILL go out of their way to kill that person. In the encounter that gets Saki killed, one even goes out of its way to attack Saki after it's seemingly taken down!
• Took a Level in Jerkass: One of the Kenzoku in the Truthful Route take the form of Miyuki to deceive Takuma, something that they never do out of that route. Justified, considering that the Master actually fails to destroy the Amusement Park (and by extension, failing to kill Baihumon and break one of his seals), so he's likely more desparate than usual.
• Would Hurt a Child: For a bunch of hardly sapient creatures, there's an obvious amount of spite against a group of children who just happened to be here. It's not uncommon for them to be disguised as their target's loved ones just to get them off guard and killed.
• You ALL Look Familiar: Each Kenzoku look almost identical to each other and there is no way to find which is which unless you scan them, but each of these have different, seemingly randomized stats, levels, moves and attributes. Worse, some of these can even be Megas or Super-Ultimates. Nothing about them can be told by the naked eye.

Arukenimon

Voiced by: Wakana Yamazaki

One of the evil monsters seeking to sacrifice the kids in order to stave off the encroaching fog in their world and the second-in-command to Piedmon's gang, she is a sadistic monster who gleefully toys with her victims until they break and give themselves in to the fog. Unfortunately, her allies consider her as incompetent because of her methods.

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• Adaptational Badass: Make no mistake, Arukenimon's Digimon Ghost Game incarnation is no slouch, but this version manages to successfully (albeit indirectly) led two major cast members to their deaths in a non-New Game Plus playthrough.
• Adaptational Seriousness: Unlike the Arukenimon from Digimon Adventure 02 and like the one from Digimon Ghost Game, there's nothing funny about this Arukenimon and she's treated as a horrific monster who managed to lead two of the main cast to their deaths through sadistically breaking their minds. There are very few villains in Digimon who take sadistic mind games to this level.
• Asshole Victim: By Part 7, her boss Piedmon makes it very clear he will not tolerate another failure from Arukenimon as far as the children are concerned. Thus, she accosts the kids and their partners for the final time to achieve her new objective: kidnapping Miyuki. Unfortunately, that failed too because of Renamon so Piedmon comes out and horrendously impales her several times over until she dies, chiding her as nothing more than a pawn who had outlived her usefulness. Given how she tortured Ryo and Shuuji to the point where they'll gladly accept the Master killing them with his army of Kenzoku, it's pretty much a deserving fate for someone like her. Even better? She dies this way even in the Truthful Route!
• Butt-Monkey: Of a sort.
  • None of the members in her group seem to respect her for her efforts, deeming her as incompetent despite having led Ryo and Shuuji to their deaths. Piedmon wants her to personally hand a live kid to him, so for him anything directly killed by the Master doesn't count and Arukenimon was a failure.
  • In the Truthful route, none of her plans pan out, especially her attempts to mentally break Shuuji and force his Partner Kemonogami to undergo a Dark Evolution since Ryo throws a wrench in that plan by giving Shuuji a good thwack and a scathing speech about his callous treatment towards Lopmon.
• Combat Pragmatist: When conferring with her peers regarding how to handle the children, she voices her contempt with direct battles. Instead, she prefers to scheme and capture them with subterfuge and other machinations. Which both works and doesn't work. Unlike Monzaemon, who tried to fight the children at the amusement park only to be killed for his efforts, Arukenimon's devious analysis of the party and her subsequent targeting of the two most vulnerable members leads to them letting themselves killed by the Master. Unfortunately, she doesn't get to hand a live kid to Piedmon personally so he deems her as worthless and promptly offs her for her constant failures.
• Darker and Edgier: Possibly the most successful Arukenimon yet in between her 02 and Ghost Game iterations as this one manages to lead two major cast members to their deaths through her machinations.
• Devil in Plain Sight: She initially appears as a human woman arguing with Kaito about the whereabouts of his sister, before noticing the other students arrive and offering to be their guide. Kaito tries to warn the others that she's a monster pretending to be human, with her pulling an obvious Wounded Gazelle Gambit in response, and also feigning ignorance about not knowing about the existence of monsters in this world that even Takuma immediately realizes sounds phony. The group then has a protracted debate over who to believe, with everyone except potentially Takuma siding with the stranger against Kaito, and not too long after she traps them in a cable car, drops her disguise, and reveals how she's plotting to kill them all. Also counts as one from a meta perspective for fans, as the design is instantly recognizable even in disguise, and the voice being a Role Reprise from both 02 and the more recent Ghost Game would make it obvious.
• Dick Dastardly Stops to Cheat: At multiple points she displays the ability to isolate the group from each other and could capture any of them, but prefers to antagonize them instead of just doing her job. This is especially prevalent in Part 5, where she spends the whole time driving Shuuji insane and goading him into sacrificing himself rather than just directly killing him. It led to Piedmon murdering her for her incompetence.
• Didn't See That Coming: On the Truthful Route, she's completely blindsided by Ryo saving Shuuji and the party killing MegaSeadramon, to the point of having a Villainous Breakdown.
• The Friend Nobody Likes: Most of the monsters serving the Master don't have a high opinion of her, despite she did technically offer at least two kids to the Master by sadistically and psychologically torturing them until they break and let themselves die. It's implied that they want Arukenimon to bring a kid to them rather than them just dying on the spot. This eventually results in her being killed by Piedmon after too many failures to show him a live kid.
• Hero Killer: Her actions lead to the deaths of both Ryo and Shuuji, though she played a more active role in pushing Shuuji over the edge, while Ryo was already dangling by his fingertips when she got there.
• Hugh Mann: As Takuma and Kaito will point out, she has no idea what a cell phone or radio tower is and only acts surprised to see the monsters when someone points out that she shouldn't know what they are.
• Identical Stranger: Her human disguise happens to look quite similar to Ryo's mother, just with white hair. This only serves to reinforce his delusion that everyone died and ended up in the afterlife, greatly accelerating his Sanity Slippage.
• Karmic Death: While on every route she's executed for her failures by Piedmon, it's specially karmic on Truthful, where Ryo and Shuuji directly caused her failures on that route after she got them killed on the other routes.
• Mythology Gag: Just like in the Adventure series and Digimon Ghost Game, she first attempts to fool the children and their partners in her human form (which is notably different from the aforementioned series' incarnations). Unlike those two, this Arukenimon enjoys a certain level of success with the ploy. And also like in 02, this Arukenimon is ultimately silenced by her boss (Piedmon) in a brutal, unceremonious fashion.
• Not Worth Killing: When she realizes that Ryo's lost his mind at the bridge, she acts amused but then worries that offering him as a sacrifice might actually make the fog worse so orders Cyclomon to kill him instead.
• Recurring Boss: She's battled directly three times: once in Part 3 and twice in Part 7. After the second time, Takuma notes how she struggled to handle them. This is quite telling given how she toyed with them during their first fight and smugly confided how she was holding back; it also makes sense, as most of the party has reached their Ultimate stages by the time of their rematch.
• Sadist: She gleefully enjoys orchestrating the events that lead to Shuuji's mental breakdown and Lopmon's Dark Evolution, reappearing after Wendigomon eats Shuuji alive to rub everything in the children's faces. She also had no problem ordering Cyclomon to kill an explicitly emotional and mentally unstable Ryo. Unfortunately for her, it's Deconstructed and led to her being given a swift death by Piedmon because she didn't take a more direct approach.
• Smug Snake: Despite her manipulations and illusions constantly harming the humans, she is never the main threat of any of the Parts she appears in, relying on brutes like Cyclonemon and MegaSeadramon to try and actually finish them off. When she actually engages them personally, she ends up faltering since at this point many of their partner monsters achieved their Ultimate evolution forms.
• Spiders Are Scary: Her default form is a spider, she attempts to entrap the humans in her webbing, and she can command dozens of Dokugumon in combat.
• Spot the Impostor: Uses this tactic in Part 5 to throw the group into disarray with fakes of the partner Kemonogami, but the impostors are fairly easy to tell from the real deal due to how uncharacteristically cruel they are to their beloved partners. This turns out to be by design, as the fakes weren't meant to fool anyone, just keep the kids occupied and away from Shuuji, who she was torturing with much worse illusions.
• This Cannot Be!: When Ryo saves Shuuji and Lopmon, then the party kills MegaSeadramon in Part 5 of the Truthful Route, Arukenimon is left in complete disbelief her plan completely failed.
• Villainous Breakdown: She has one on Part 5 of the Truthful Route when Ryo prevents Lopmon's dark evolution and the party kills MegaSeadramon. For the first time up to that point, nothing went her way, wiping her smirk off her face and leaving her in disbelief her plan completely failed. She flees the scene, swearing revenge in the process.
  Arukenimon: I...This can't be happening...It wasn't supposed to go this way!
• Villains Want Mercy: Pitifully begs for help when Piedmon has had enough of her failures.
• Wake-Up Call Boss: Arukenimon is likely the first boss the player would have trouble with. She's a Perfect while you'll be lucky to have more than a Champion or two at the point you first meet her, meaning that your attacks will miss very easily and she can cripple or kill most units in two to three hits. On top of this, the map is extraordinarily large and infested with Dokugumon, and you start with only three units; Dracumon, Agumon and a Free Monster, and you'll have to rely on your Free Monsters if you chose to go with Arukenimon instead of Kaito. Hope you can cut down the webs on the cable car — you'll need the extra manpower.

Cyclonemon

A one-eyed brute that responds directly to Arukenimon's orders.

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• Arc Villain: Although Arukenimon is the main threat of Part 3, he serves as the arc's final and most dangerous threat after her initial plan to trap the humans falls apart, leading directly to Saki and Ryo having character-building moments.
• Dumb Muscle: Floramon and the other monsters decry him as this, being little more than someone who values power over everything else.
• Hidden Depths: Despite the other monsters more or less calling him a muscle-brained idiot, Cyclonemon notices that Saki is not as outgoing as she portrays herself, stating she's holding herself back.

Monzaemon

A member of Arukenimon's organization that considers her mental manipulation to be tedious when brute force can accomplish their goal just as well.

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• Adaptational Villainy: Past depictions of Monzaemon have not been intentionally antagonistic, and those that seemed to be are actually its Evil Counterpart WaruMonzaemon in disguise. This one, however, is willingly on the same side as Arukenimon.
• Arc Villain: After the humans deal with "the Queen" of the theme park in Part 4, he arrives alongside Garurumon; unlike his comrade, who just wants to beat up the monster partners, Monzaemon is there to kill the humans and becomes the actual main threat of the arc, tying in to Miu's character arc by having her realize the actual danger everyone is in while she's been taking advantages of the situation.
• Artificial Stupidity: He's one of the earliest buff-using enemies encountered and his AI is not that bright in using them. He'll constantly spam attack buffs if there's an unbuffed minion or if he's unbuffed or his buff is about to expire. This gives your monsters free turns to attack or flank him while he can only slug out a few hits.
• Bears Are Bad News: He's a giant yellow teddy bear, and he's both able and willing to murder the human children.
• Irony: The Monzaemon in Digimon Adventure was a theme park mascot replaced by an Evil Counterpart, while this Monzaemon is willingly evil and attacks the theme park that the kids were exploring.

Garurumon

Voiced by: Mayumi Yamaguchi

A rebel willing to partner with the sinister organization Arukenimon is in, but who isn't actually interested in human sacrifice; instead, he eagerly hunts down the monsters partnered with the humans, who he considers to be "traitors".

For information about Garurumon as the Professor's Partner monster, see his folder as the Tenth Partner.

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• Adaptational Villainy: Adaptational Anti-Villainy in this case; although Garurumon's best-known depiction is as the Digivolution of Matt's partner in Digimon Adventure, this one is working with Arukenimon, yet only wants to prove his superiority to the monster partners and doesn't actually want to hurt the humans.
• All for Nothing: In reality the young professor didn't abandon him, he was bailed out by Miyuki using her song. Therefore, he was pretty much hunting down other Kemonogami partners over a solid amount of time for basically nothing.
• Arc Villain: Although Garurumon first directly fights the humans at the end of Part 4, it is Part 6 that features him as the main opponent, and its story arc focusing on a Break-Up/Make-Up Scenario is directly tied to his own belief that humans and monsters should not get along.
• Cannot Kill Their Loved Ones: Much to his frustration, Garurumon never follows through with his threats to kill Haru and can't bring himself to go through with it no mater how much he hates him.
• Face–Heel Turn: He's actually the evolved form of the Gabumon in the tutorial, who felt abandoned after Haru (the young professor) left.
• Green-Eyed Monster: He doesn't target the human kids, but he loathes their partner monsters and attacks them in a fit of rage, wanting to prove to them and to himself that they don't need humans. This stems from his past as Haru's partner, who felt abandoned after Haru returned to the human world and never returned.
• Misplaced Retribution: He believed that the professor abandoned him when he ran away from the alternate world back to the human world through the blue portal Miyuki summoned. In reality, Miyuki bailed the young professor out when they are being attacked by Kenzoku, rendering his entire motivation moot.
• Not in This for Your Revolution: When he first confronts the humans in Part 4, Monzaemon is upset that he's only focusing on the Kemonogami partners and is willing to let the humans go free; Garurumon responds that they may not have the same beliefs, but their goals just happen to coincide.
• Please, Don't Leave Me: What kicked off his Start of Darkness. After witnessing Akiharu return to the Human World, he questioned if their bond actually meant anything and begged his partner to come back. The years following that made him so bitter and resentful of Akiharu that he believed he abandoned him, leading him to hate the other Partner Kemonogami out of the belief that bonds are utterly worthless.
• Recognition Failure: Subverted. Despite not having seen Akiharu in years, Garurumon recognizes the Professor almost immediately. He also doesn't mistake "Haru" for his partner at all, likely having known that Renamon has been disguising herself as Miyuki's brother to provide the latter socio-emotional support.
• Recurring Boss: He's fought repeatedly throughout the game, such as alongside Monzaemon in Part 4, and as the Arc Villain of Part 6.
• Used to Be a Sweet Kid: The flashback we see of when he was left behind shows us that he was once fairly shy and scared of being unable to fulfil his destined role of protecting Haru.
• What Happened to the Mouse?: In the Harmonious and Wrathful routes, he doesn't make another appearance after the confrontation at the factory. Judging by him being chased by monsters that blamed the humans for Piedmon's death in the Moral route, it's implied he either died at their hands or was forced on the run before vanishing just like Renamon after the Professor, Kaito and Miyuki are absorbed by Boltboutamon.
• Why Can't I Hate You?: He desperately wants to hate Haru for abandoning him, yet when Renamon tries to goad him into killing the Professor, the mere idea causes him to freeze up and balk. Similarly in the Truthful route, where he attempts to rebuke the Professor's words but finds he cannot.

MegaSeadramon

The leader of a group of Seadramon that work under Arukenimon, who torment the humans with illusions of their partners badmouthing them.

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• Arc Villain: Dealing with its subordinates is the main focus of Part 5, with MegaSeadramon itself appearing at the end of the arc.
• Bait-and-Switch Boss: Unless the player saved Ryo and connects with Shuuji, then instead of being the chapter's boss, Wendigomon will kill it and take its place.
• Call-Back: His battle with the protagonists brings to mind his lesser counterpart Seadramon's battle with the Digidestined from Adventure, down to one of the monsters undergoing an evolution to soundly defeat him.

The Dark Leader

Piedmon

Hooded

^{Click here to see him without the hood} 

Voiced by: Akio Ōtsuka

The leader of a cabal of monsters that are afraid of the fog encroaching upon their world, and believe that the only way to avoid oblivion is through killing the intruding humans.

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• Actor Allusion: Piedmon's voice actor is the son of Chikao Ohtsuka, the (now-deceased) voice actor for Adventure's Piedmon.
• Adaptational Seriousness: In Digimon Adventure, Piedmon is a Sadist, sure, but he's Laughably Evil and can come across as entertaining in his worst moments. There's nothing funny about this guy who doesn't even turn people into keychains or playing cards but outright kills anyone who crosses paths with him, and in the Harmonious Route devolves into an Omnicidal Maniac as Boltboutamon.
• Adaptational Wimp:
  • Piedmon is still powerful, but this one can be bested by Ultimates whereas previous ones were either outside the heroes ballpark with Ultimates or required Megas (or an Ultimate with a type advantage) to take him down.
  • The same also applies to Boltboutamon. In his debut game Digimon -Next 0rder-, he was so insanely powerful that when Lucemon Chaos Mode and Beelzemon, two of the Seven Demon Lords joined forces with Omegamon Alter-B to expel him from the world, it didn't even faze him. This Boltboutamon, while still strong, can be taken out and even killed with normal Megas.
• Asshole Victim: It's very hard to feel sorry for him when he's killed by Plutomon, since he helped solidify Aoi's Face–Monster Turn and he's known for murdering anyone who even so annoys him.
• Assimilation Backfire: Absorbing Kaito, the Professor, and Miyuki and then merging with the Master backfires, as just as he prepares his final attack, they and all the Master's victims rebel against him from the inside.
• Ax-Crazy: Usually downplayed, since he tends to goes straight into kidnapping victims for the Master and only goes around to kill people who annoy him if he's really pissed off. However, as Boltboutamon and especially after absorbing the Master as Boltboutamon, he tends to break into mad laughs and Evil Gloating, even openly telling the survivors that he enjoys the screams and pleas of people already trapped inside the Master. It's very clear that having all of the Master's victims inside him does not do anything good to his mental state, even if Takuma denies his claims that he felt Kaito's hatred against the world.
• Big Bad: While The Dragon to the Master, during the Harmonic Route he's so furious with the Master having just used him that he decides to usurp him and destroy everything. His mechanizations to do that promote him to the main villain of the route and he becomes the Final Boss.
• Black Cloak: In his first appearance, he's wearing a black robe with a cape and a hood covering his face in order to obscure his identity...but there are still hints to it, as it's decorated with playing card suits and his blue ribbons are sticking out from under his cape.
• Cool Key: The lock and key to the Waterway is marked with the signiature eye mark on his clothes.
• Climax Boss: He's the last opponent before the route split, and Takuma has to fight him back-to-back within two chapters (excluding free battles).
• Dark Is Evil: He's a Virus-type from the "Nightmare Soldiers" family, and unlike Dracmon, his desire to sacrifice humans certainly reflect that.
• Diabolus ex Machina: Just as Renamon and the children successfully save Miyuki from Arukenimon's grasp and they all think she's safe for sure, he personally comes in, grabs her and runs.
• The Dragon: Directly answers to The Master. This becomes subverted in the Harmonious Route where he's ragingly pissed about the Master seeing him as little more than a tool for him to exploit and wants revenge, resulting in him becoming the Big Bad of the route.
• The Farmer and the Viper: In the Wrath Route, Aoi has Labramon heal him and attempt to persuade him into helping them (Aoi was pretty much broken at that point and was barely sober though). He repays her kindness by fatally stabbing her, and that's the final push needed to destroy Aoi's sanity completely.
• Final Boss: As Boltboutamon, he's the last opponent faced on the Harmonious route.
• Fusion Dance: In the Harmonious route, he fuses with Dracmon's Ultimate form Myotismon to become Boltboutamon.
• Glass Cannon: His signature attack, Trump Sword, always hits as if it was a backwards flank and thus does more damage than it's supposed to and is outright unblockable. This, when compounded by his incredible special attack and the debuffs he throws with his passive, means that he will do up to a thousand damage per hit against neutral targets and will likely annihilate the angel monsters you bring against him. He's also very fast and will likely be moving first in a turn and evading a large portion of your attacks. However, his bulk is middling for a Mega and you'll likely be able to take him down in several well-placed light attacks.
• The Heavy: He's not the Big Bad, but, being the one who is ordering Monzaemon, Garurumon and especially Arukenimon around, he's pulling the strings all the way up to Part 8, and potentially further on depending on the route you end up in.
• Hero Killer: Towards the end of the Harmonious route he kills Kaito, the Professor and Miyuki in one fell swoop, by extension killing Renamon, Garurumon and whatever may have been left of Dracmon within their fusion.
• Human Sacrifice: He believes that this is the only way to stave off the fog, to the point that he's furious with Arukenimon when Ryo is killed by the fog directly instead of her performing an official ritual.
• Karmic Death: In the Wrath route, he fatally wounds a barely sober Aoi after the latter asked Labramon to heal him. As recompense when Aoi merges with Labramon and undergoes a Dark Evolution as Plutomon, Piedmon is unceremoniously killed off by the very monster he inadvertently created.
• Laughing Mad: As Boltboutamon, he has a tendency to break into mad cackling. His original Piedmon form does an Evil Laugh at most, but never to the point of the cackling he does as Boltboutamon.
• Mean Boss: Even out of killing Arukenimon, several Gazimon in the Truthful Route noted that they don't like working under him because his orders are way too hectic and brutal. They like him more than when Puppetmon was in charge though.
• Monster Clown: Though unlike in Digimon Adventure, the "monster" aspect is way heavier than the "clown" aspect.
• Murder Is the Best Solution: He's known for outright murdering people or monsters for the slightest of provocations, sometimes even with Trump Sword instead of just beating them to a bloody pulp. Arukenimon fails him? Kill! A policeman approaches him in the real world? Kill! A barely lucid Aoi orders Labramon to heal him up in hopes of getting him to become her ally? Kill! The latter in particular got him what he deserved when Aoi turns into Plutomon and kills him.
• Mythology Gag:
  • Like the Adventure series, Piedmon is the leader of the group of evil monsters that serves a mysterious greater force. But unlike his first incarnation, this Piedmon has no interest in sadistically toying with his victims, instead opting to murder them outright.
  • More appropriately, he appears to be based on Lord Demon from Digimon V-Tamer 01. He is ostensibly serving under a Master who bears a grudge with his sister as his lieutenant, and develops the intention to turn on his master as The Starscream. He also hijacks Boltboutamon to start a mass omnicide against both humans and the other Kemonogami in the Harmonious Routes just like how Demon hijacks Arkhadimon, and he wears a hood that obscures his true identity just like the Demon in Digimon Adventure 02 does.
• My Name Is ???: In his first appearance at the end of Part 3, he's wearing a Black Cloak and his text box doesn't name him in order to preserve the mystery of his identity.
• Nice Job Fixing It, Villain: If Piedmon didn't stabbed Aoi in the back in the Wrath route, Plutomon would not exist as a result, who makes him pay the price for taking advantage of her kindness.
• No-Nonsense Nemesis: Subverted. He deems Arukenimon as incompetent because her sadistically toying with the kids renders him unable to directly offer the kids to the Master, and instantly goes into abducting Miyuki after he kills Arukenimon for her repeated failures. However, in Part 8 and the Wrathful and Harmonious Routes, it shows that he will gleefully attempt to kill anyone who just happens to go near him if he's pissed off.
• Oh, Crap!: Piedmon panics when Plutomon makes her debut and has him at her mercy. He's swiftly killed off moments later.
• Omnicidal Maniac: In the Harmonious Route, after realizing the Master doesn't actually care about him and realizing he's been mortally wounded, he decides to destroy both worlds once he gains more power in the name of Boltboutamon.
• One-Winged Angel: After being mortally wounded from the beatings he got from both all the kids together and then Takuma and Agumon, he convinces Kaito to fuse him with Dracmon's Ultimate form Myotismon to form the monstrously powerful Boltboutamon. While at first he shared control, once Kaito's rage subsides, he becomes the sole controller. He then proceeds to trick the Master into consuming him, taking control from the inside. The end result is Boltboutamon emerging from the Master's body.
• The Reveal: Underneath his Black Cloak, his true identity is Piedmon.
• Revenge: In the Harmonious route. At some point after Chapter 8, he believes Miyuki's words about the Master and decides he wants to destroy the Master and everything else in the process. He finds the means to exact his revenge with Kaito, who Piedmon is able to easily manipulate thanks to Renamon.
• Taking You with Me: In the Wrathful route. While he certainly did not plan on dying at the hands of the kids, he gloats how Aoi and Labramon will die along with him due to their injuries. Unfortunately for him, his previous actions causes Aoi's negative emotions to skyrocket, forcing Labramon to Dark Evolve and biomerge with Aoi, saving the latter's life in the process in exchange for the party having to deal with an insane monster that's no longer the Team Mom they recognized.
• Throwing Your Sword Always Works: And sure it does, his Trump Sword attack is some of the strongest attacks in the entire game.
• Unwitting Instigator of Doom: In the Wrathful Route, he only wanted to beat Aoi up For the Evulz and gloat it in front of the rest of the party. He didn't think of the possibility that Aoi will become so batshit insane that she turns into Plutomon, casually obliterates him and goes straight into absorbing every living thing in both worlds to enforce harmony.
• Villainous Breakdown: He does not take it well when the heroes defeat him in the final battle of the Harmonious Route.
• What Happened to the Mouse?: In the Moral and Truthful route, he is never seen again after Part 8. Several Puppetmon or Gazimon depending on route later accuse Takuma of killing him, despite this never being the case; Piedmon was only pushed back into the portal. Given how severely wounded he's shown to be in the Wrathful and Harmonious routes, it's likely that he ended up dying of the wounds he'd sustained up until that point.
• Worf Had the Flu: Takuma and Agumon manage to beat him solo in their second battle, but he's still badly beaten down from the previous battle with all the kids at once and it's noted he's far from in top form at that point.
• Xanatos Gambit: Pulls off a masterful one in the Harmonious route. He offers Kaito a means to destroy the Digital and Human Worlds by merging him with Dracmon's Ultimate Evolution Myotismon, with Kaito's hatred allowing Dracmon to take the driver seat. What he doesn't tell Kaito is that if his hate falters, he can retake control. Not that it matters, since Piedmon as Boltboutamon is banking on Kaito either destroying the Master or the Master absorbing Boltboutamon, allowing him to take control of the Master from within. The only reason his plan fails is that Takuma and the other children were much stronger than he anticipated.
• You Have Outlived Your Usefulness: Pulls this on Arukenimon when she failed to even offer a single sacrifice to the Master despite multiple chances. Notably, he didn't count those directly killed by the Master, he wants Arukenimon to hand a kid to him personally.

The Traitor

Renamon

In the Part 10 of all Routes, Renamon strikes a deal with the Master to bring the survivors as sacrifices for him in exchange for Miyuki being no longer under his control, turning herself into the Master's final minion after his organization is annihilated. She then draws Aoi and Kaito into the Library when they were foraging for food ^note Moral Route, draws Aoi into the Library without saying anything ^note Wrathful Route or draws Kaito in under the premise of teaching him revenge ^note Harmonious Route so they would be killed off by a Kenzoku ambush. In the Truthful Route, she instead guides the entire party to Ebonwumon's shrine in the Second Island where she would attempt to sacrifice the professor.

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For more about Renamon, see the section for the Ninth Partner here.

Puppetmon

Remnants of Piedmon's gang. Several of these puppet-like monsters target Garurumon for his betrayal against the Master after Piedmon's fall. They are only involved in the Moral Route where they try to kill the party in order to avenge Piedmon.

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• 0% Approval Rating: Several Gazimon in the Truthful Route discuss that they don't like being under Puppetmon's command more than they do when they're under Piedmon.
• Adaptational Seriousness: The original Puppetmon is a Psychopathic Manchild who acts like a spoiled brat who's willing to kill his underlings just because they spoke ill of him. These are all dead-serious in avenging Piedmon and the Master and will outright attempt to sacrifice the party like Piedmon would and kill Garurumon for that.
• Consummate Liar: Subverted. When the last Puppetmon denies that he has the Magatama to the Master's lair, everyone can tell he in fact does.
• Flunky Boss: You fight three of these in separate occasions, with each bringing powerful Ultimates and Megas like them.
• Mythology Gag: Several to the Puppetmon from Adventure.
  • Just like when a member of the Dark Masters, Puppetmon is shown to take orders from a Piedmon who functions as the leader of the group. Unlike that individual, Puppetmon's weaknesses as a mega are being made up for in quantity, not quality. Still noted to be disliked by Kemonogami under their command too, much like the friendless Bad Boss he was before.
  • Puppetmon is incredibly weak to Water. This, when combined with their Glass Cannon stats, means they fold to a few well-placed water attacks. And since MetalGarurumon is a water specialist, he makes short work of them, helped by how the professor's one is available in the route where you fight them. In Digimon Adventure MetalGarurumon is the one who managed to kill Puppetmon off once and for all.
• Perverse Puppet: Just like in Digimon Adventure however, the group seems to feel some sort of sympathy for them and only decided to kill one if they had no choice.
• The Remnant: They are leftovers from Piedmon's gang that were pursuing Garurumon for his betrayal. They only play a role at the end of the Moral Route, though.
• Undying Loyalty: Unlike Piedmon who secretly wants to be The Starscream, they are very loyal to Piedmon himself and the Master.
• What Happened to the Mouse?: It's unclear what happened with them in the Truthful route. It's likely Garurumon killed all of them.

Gazimon & and the remnants

A group of monsters who once worked for Piedmon, they replace Puppetmon's role the Truthful Route, hunting down Garurumon for revenge with Piedmon's death.

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• The Remnant: All of them are whatever's left of Piedmon's gang.
• Weak Boss, Strong Underlings: Exaggerated. The ones leading the attacks against Garurumon might be just Gazimon, but for some reason they bring several Mega-level monsters like Plesiomon and Magnadramon with them.

The Master

Haruchika Minase + Fanglongmon

^{Click here to see his true form} 

Voiced by: Hidekatsu Shibata (both identities)

The enigmatic being that the Kenzoku serve. Known as the "caretaker" of the Kemonogami World, it holds a vast amount of power and is the game's Final Boss.

It is actually a fusion of Haruchika Minase, a boy from the Kamakura Shogunate era and a member of the Minase clan, and his Fanglongmon. He was sacrificed hundreds of years ago by his sister Yukiha to gain the Kemonogami's powers, and once in the alternate world became partners with Fanglongmon. However, Haruchika became a vengeful spirit seeking revenge against his sister and corrupted Fanglongmon into the Master before he willingly let himself absorbed by it to become his consciousness.

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• All for Nothing: At the end of the Truthful route, it turns out that Haruchika's sister, Yukiha, didn't intentionally sacrifice him, but was just too caught up in her familial responsibilities to follow him when the clan sacrificed him. She did intend to follow him once she was free of those responsibilities, but by then she had grown too old. So, Haruchika has been plotting revenge against his sister for nothing.
• Antiquated Linguistics: He speaks in very archaic and formal Japanese. For example, he uses "unu" or "nanji" (both roughly translated to "thou" in English) to refer to another person/entity, and as Haruchika refers to Yukiha as "Aneue". Justified considering he's actually the ghost of someone who's long dead centuries ago.
• Assimilation Backfire: Consuming Boltboutamon/Plutomon in their focus routes allows them to seize control of the Master from inside after the surviving Chosen knock it around a bit - which was the other villain's plan.
• Bait-and-Switch Boss: In both the Harmonious and Wrathful routes, it's taken over by another monster midway through the final encounter (Boltboutamon and Plutomon, respectively).
• Contrived Coincidence: The Master who just happened to drag Miyuki into the Kemonogami World 50 years ago and possessed her to wreck havoc from Chapter 9 onwards, and whom Haru/the professor was involved with is their late ancestor.
• Dark and Troubled Past: In the Truthful route, you learn that The Master used to be a human named Haruchika, one of several lords during a time of war. Alongside four others, he was sacrificed to obtain the power of the god beasts, but Haruchika was sacrificed by his own sister and was filled with thoughts of revenge. Since human emotions are what shape the Kemonogami's world, Haruchika's emotions threw the world into chaos, and he later fused with his dark-digivolved partner to become The Master. So, while he's sacrificing human children to preserve the world, it's also partially motivated by his hatred of the human clan that sacrificed him, so it's also out of revenge.
• Deconstructed Character Archetype:
  • Haruchika serves as one for Digimon tamers as a whole and portrays what happens if they let their negative emotions and grief consume and run all over them in the most cynical way possible. Worse is unlike Megidramon or Wendigomon, the Master is no rampaging beast but an actual Physical God with its human partner taking over its consciousness. The end result is an intelligent, willing Omnicidal Maniac who not only displays an incredible amount of spite against humans and Kemonogami alike, manipulates his fellow monsters into deals where only he comes out at the top, and desires the destruction of both worlds out under a misguided belief that his sister betrayed him, but also possesses sufficient, god-like powers to actually carry out the threats.
  • He's also one to the Evil Counterpart tamer archetype. The difference is that, despite being driven insane by perceived betrayal, unlike the others such as the Digimon Kaiser/Ken, Neo Saiba or Menoa Bellucci who own very powerful Digimon at best and are unable to end worlds on their own, Haruchika's Kemonogami partner is no ordinary monster, but a reality-warping Sovereign capable of worldwide destruction. This ends up not only getting countless children killed over the centuries, but in the bad ending, also degenerates into an apocalyptic scenario when he manages to kill all other Sovereign Beasts and encroach into the human world to annihilate humanity in order to satisfy his grudge against his sister.
• Easily Forgiven: Despite being directly responsible for an undetermined (and likely massive) amount of children deaths spanning over up to a few centuries, Yukiha and the party forgives him for his sins pretty quickly at the end of the Truthful Route.
• Eldritch Abomination: The Master takes the form of a mechanical abomination with multiple glowing red eyes.
• Evil Former Friend: Haruchika is this to the other sovereign children. That's why back in the times they decided not to kill him but rather weaken his influence by sealing his power, and they tell Takuma and co. to save Haruchika, as opposed to the current party who would be agreeing to slay him instead on their own.
• Evil Makes You Ugly: It's currently a massive heap of metal driven by hatred, but they were the noble and dignified-looking Fanglongmon and Haruchika.
• Evil Sounds Raspy: He speaks in a raspy old man's voice and he is responsible for the mist and the monster gang ordering human sacrifices. By the end of the Truthful Route, it's revealed to be Fanglongmon's voice.
• Fallen Hero: Haruchika was one of the five Sovereign Children sacrificed by Yukiha Minase to stop the warring states. However, having been sacrificed and abandoned by his sister, he fell into a deep, heavily misguided form of hatred that turned him into the century-old Serial Killer he is now.
• Familial Body Snatcher: The girl he possessed on Chapter 9 is actually his late descendant, so he can be considered this.
• Final Boss: In the Moral and Truthful routes, he is the last obstacle that the humans have to fight.
• Fusion Dance: His current form is actually the result of Haruchika merging with Fanglongmon. Miyuki's powers manage to split him and Fanglongmon Ruin Mode apart, allowing the latter to be purified and return Haruchika to his senses.
• Human Sacrifice: The Master's plan revolves around this, as he thinks kidnapping and sacrificing human children is necessary to preserve the other world. In the Truthful route, we learn that the boy who would later become the Master was one himself.
• Luke, I Am Your Father: He's actually the ancestor of Haru and Miyuki, whose existence predates centuries ago in the Kamakura era. When the party runs into him in the Truthful Route, he even questions Miyuki why she isn't filled with hate like him even as Haru supposedly abandoned her.
• Manipulative Bastard: Tricks other monsters into one-sided deals that he will never follow. He recruited a bunch of monsters to grab children to sacrifice for him so the fog in their world can be removed, but since he controls the fog the monster world is going to be destroyed anyways. At Part 10 in all routes he also tells Renamon that he will give Miyuki back to her should she sacrifice a child for his sake, although the professor tells her that he has no intention of following the bargain.
• Misplaced Retribution: At the end of the Truthful route, we learn that the Master is partially mistaken about his sister, Yukiha, as she didn't intentionally sacrifice him. She was just too caught up in her familial obligations and responibilities to her land to follow Haruchika when her clan sacrificed him. And by the time she was free of those obligations, she had already grown too old to follow him, so she trusted her descendants to get through to him in her place.
• Mythology Gag: He serves a role like Apocalymon's from Digimon Adventure as an Omnicidal Maniac being driven by hate and frustration that claims it's being further amplified by all the minds of the dead. He has Piedmon and Puppetmon agents following his orders (in addition to all four of Apocalymon's heralds being in-game), the subspace he exists within looks very similar to the darkness Apocalymon's release brought, and both can be seen as foils to Fanglongmon as representing "Mu"/"Nothingness" that can also be applied to the center of The Four Gods instead of the gold dragon. His true identity as Haruchika also brings into mind human villains with traumatic Freudian Excuses like the Digimon Kaiser, Neo Saiba or Akemi Suedou, Saiba in particular since his sister was integral to his Start of Darkness too, although Haruchika's status as the man in-charge rather than an Unwitting Pawn makes him more similar to Suedou than the other two.
• My God, What Have I Done?: At the end of the Truthful route, after Fanglongmon Ruin Mode is defeated and Haruchika is reunited with his sister, Yukiha, Haruchika is finally free of his malice and hatred, and expresses remorse for everything he's done, thinking there's no way he could possibly atone. Yukiha, however, believes that his tears are atonement enough, and they both go to a place of rest, trusting their descendants and future generations to look after the safety of the world.
• The Needs of the Many: The Master claims this is his motivation in the Moral route, sacrificing human children so that the Kemonogami's world in general can continue to exist. Agumon rebukes these claims, stating his world deserves to be destroyed if it lives on human sacrifices. As the Moral and Truthful routes reveal, the Master's plan was flawed from the start as the Professor realizes the Kemonogami World thrives on powerful emotions, including the ones produced by the sacrificed children.
• Outside-Context Problem: Zigzagged. The Master himself might resemble other outside-context problem monstrosities like the D-Reaper or Eaters, but it's still a Fanglongmon, just virtually unrecognizable. It's consciousness in the other hand, is a genuinely supernatural force in the form of a vengeful human ghost, rather than the digital Eldritch Abominations from past series.
• Powered by a Forsaken Child:
  • In the Moral route, he claims that he needs to sacrifice children in order to maintain and preserve the Kemonogami's world. As the Professor realizes, however, the Master is mistaken; what was actually preserving the world was the strong feelings produced by the sacrifices, not the sacrifices themselves.
  • The Truthful route reveals that the Master himself is literally powered by a forsaken child. Or more accurately, the forsaken child let himself to be absorbed by his now heavily disfigured partner and became his consciousness.
• The Power of Hate: What's been driving the Master. In fact, his current form is a fusion between Haruchika and his monster partner because of Haruchika's immense hatred for his sister for sacrificing and "abandoning" him.
• This Was His True Form: In the Moral route, after the final boss battle, The Master returns to his "true form", a glowing ball of white light. However the Truthful Route reveals that it's true form is actually Fanglongmon, with Haruchika Minase's soul putting himself into the driver seat, after Miyuki splits the two apart.
• Roaring Rampage of Revenge: If Takuma decides to go back home at the end of Part 8, it's implied that he kills all of the sovereigns chaining him down, then returns to the human world to wipe out humanity by unleashing deadly disasters against them just to satisfy his century-old grudge.
• Serial Killer: He's been killing children or anyone else who entered the other world since he manifested, with a seemingly massive bodycount accumulated over centuries. It's however, not until the 20th and 21st century where the seals placed on him by his former friends weaken and random children can be spirited into the other world and killed, with several students attending a summer camp and two locals being his most recent batch of victims.
• Tragic Villain: At his very core, Haruchika is just a broken young man who was supposedly thrown to die by the priestess overseeing the Kemonogami rituals that was also his sister, and let himself consumed by grief and hate as a result. Even worse, said sister had no intention of leaving him alone to die, but came too late to reunite with him.
• Vengeful Ghost: He's planning to destroy both the human and Kemonogami worlds over a centuries old grudge, and he's controlled by the ghost of a long-dead boy who was sacrificed by his sister that (he thought) left him to die.
• Walking Spoiler: It's hard to talk about The Master without spoiling major aspects of the four routes, especially the Moral and Truth routes.
• Well-Intentioned Extremist: In the Moral route, the Master claims he was only sacrificing children in order to preserve the other world. Agumon counters that if preserving the world means countless children have to die for the Kemonogami's sake, maybe the world should be destroyed. Agumon would rather the world not exist if murdering children is the price to maintain it. And as the Professor realizes, the Master is mistaken, as what was actually preserving the world was the strong emotion produced by those sacrifices, not the sacrifices themselves.
• Would Hurt a Child: The Master has been kidnapping and sacrificing human children out of a misguided belief that this is necessary to maintain the Kemonogami's world.
• Wrong Context Magic: Unlike other Kemonogami who are killed off after their human partner's death, Fanglongmon continues to exist even after Haruchika is dispelled by and alongside Yukiha.
• Your Soul Is Mine!: The Master contains the souls of everyone sacrificed to its machinations, and it is implied that this has not been healthy for its sanity.

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