Complete Monster/Digimon



""It's SHOW TIME!" - Akihiro Kurata as he readies another method for Digimon genocide in Digimon Savers"

In a similar vein to the Pokémon franchise, the Digimon franchise has it's own share of these especially twisted freaks.

Adventure

 * Myotismon was the most sadistic and psychopathic villain in the initial anime series. A Nightmare Soldier Digimon with aspirations to fuse the Digital World with the real world into a singular underworld for him to rule over, he took in Gatomon under his wing only to abuse and assault her to the point she became his loyal killing machine. He also routinely tortured his Ineffectual Sympathetic Villain minion DemiDevimon for petty reasons, and traveled to the real world in hopes of finding and murdering the eighth DigiDestined child, destroying much of Tokyo and killing several of his hench-mon along the way for the slightest failure; (he very seldom leaves a minion alive, in fact). After discovering that Gatomon was Kari's destined Digimon partner, Myotismon covered all of Odaiba in fog and launched an attack, kidnapping almost every family in the district and forcing Gatomon to identify which among the children of said families was her partner or he would kill them all, except then even when Kari was caught, he stated his plans to eat all the children later anyway. When Kari was finally brought before him, Myotismon attempted to kill her and ended up killing poor Wizardmon in the process. Any minions he hadn't already killed were eventually cannibalized to fuel his Super Mode, and he was stopped just in time to prevent the entire population of Odaiba from becoming his dessert. The entire time, Myotismon was motivated solely by undying hunger for power over both worlds.
 * Then he comes back and proves to be the mastermind of everything in the second season. He'd played on Oikawa's sadness and despair to use him as a pawn, his corrupting influence destroying Oikawa's body from within. Using kids to incubate his new power source wasn't nice, either, but the real reason Myo is seen as nigh-Kurata-level evil is what he did once he became MaloMyotismon. Deciding he didn't need Arukenimon anymore, he subjected her to a painful and horrible death, while reading her mind and doing everything she feared he'd do to her in that order. The poor Dark Action Girl hadn't failed him; this was purely for the hell of it, and not only that, he infamously claimed to have been "kinder" with her because she was a woman. And when her Dogged Nice Guy Mummymon tried to avenge her, Myo gleefully incinerated him. When the new DigiDestined team fought back, he trapped the kids in illusions to placate them with happy thoughts while he would devour them, and even when this failed, he simply attempted to gain more power from darkness so that he could tear both the Digital World and the real world apart. Other Digimon Adventure villains could be Bad Bosses and tended to be Card Carrying Villains, but Myotismon's malicious sadism was unparalleled.
 * Piedmon is a psychotic Monster Clown who doesn't give a damn about life at all so long as he has the power to step all over others with. As the leader and most powerful member of the Dark Masters, supreme leaders of all evil Digimon in the Digital World, he is fittingly the most vile member. He led the Dark Masters in all of their destructive acts, including wiping out Primary Village and all of its' Digi Eggs entirely (mass infanticide, pretty much) and warping the entire Digital World into Spiral Mountain. Early on he attempts to outright murder Mimi when her crying annoys him, and Chumon ends up Taking the Bullet and dying from being skewered instead. His entire reason for saving himself for last was to enjoy seeing the DigiDestined be tormented by his fellow Dark Masters and their minions, and when they finally face him down, he savagely beats down their Digimon partners before turning the Digimon and children into keychain dolls for him to toy with; the entire sequence where he hunts down the kids and their Digimon one by one before transforming them, all while laughing with sadistic glee and mocking the two youngest team members (who he saves for last) is surprisingly tense and scary. But then he actually gets worse! He corners TK and Kari on a rope high above Spiral Mountain. Does he try to kill them with his swords? Nope. Try to turn them into keychains like their friends? Nope. He cuts the rope and sends them plummeting to the ground far below, laughing about it all the way! What makes Piedmon so horrible is that he's positively giddy about murdering children or confining their souls to a Fate Worse Than Death purely for his own amusement.
 * Seems the writers are aware of how big of monsters these two are: Piedmon and Myotismon are the only two Digimon Adventure villains who ultimately suffer a Fate Worse Than Death as well. Where Myotismon is ultimately killed Deader Than Dead (having his soul destroyed), Piedmon is sucked into MagnaAngemon's Gate of Destiny, a portal to a dimension where his data gets broken down and from which he will never escape, and Digimon are pretty much immortal baring being killed outright.
 * While not quite on par with Myotismon or Piedmon in terms of sheer evil, Machinedramon also counts. Most Killer Robots are unfeeling killing machines, and Machinedramon's Creepy Monotone would imply this applies to him too. But it's the things he actually says that show his true colors: his every word shows he's a cold, calculating sadist who loves killing people, and according to Piedmon, he lives only to destroy. He lent his machine army to Piedmon for his slaughter of the digital guardians in their castle when he went to steal the tags and crests, and his army also wiped out the Otamamon and Gekkomon kingdom, leaving few survivors. When the DigiDestined are in his territory, he rigs the city with death traps in attempts to kill them, kills his own henchmen when he deems them no longer useful, and massacres an entire hoard of Numemon when they attempt to protect Kari from him. The most chilling line he has in the entire show is telling Kari, a little girl and one of the youngest Digidestined, that he is going to kill her in the most painful way he possibly can. He's not the worst Complete Monster in Digimon, but he certainly makes the list.

Tamers

 * While a minor example compared to others, IceDevimon from episode 10 certainly counts. Not content to merely load their data, he keeps the frozen remains of the Digimon he killed as a kind of trophy gallery. Notably, Rika, who to this point had been rather ruthless regarding Digimon, is horrified. The pedophilic rapist undertones he has towards Rika don't help either.
 * The D-Reaper from the Digital World was really just performing its' function but in a destructive way. The split D-Reaper that emerges in the real world, however, including J-Reaper and all the agents that follow it, is cold, calculating and intelligent, using Jeri's feelings to come to the conclusion that all humanity is worthless and must be purged. And it attempts to do so in insane and sadistic ways like Mind Rape and Body Horror. It cares nothing for all life, not even it's own artificial existence, making it truly heartless.

Frontier

 * If anything, the IceDevimon in this series is just as bad, if not worse than the one in Tamers. Here he's an Ax Crazy Serial Killer whom even the current Big Bad didn't want anywhere near him, so he kept him in the lowest levels of his fortress to serve as a dungeon. Any other Digimon that ended up their got tortured, frozen, and killed by IceDevimon just for kicks. When the kids end up facing him, he attempts to kill them all, particularly Koichi, who's already in critical condition back in the real world as it is!
 * Lucemon, a fallen angel Digimon with a Messiah complex, serves as the series' ultimate Big Bad. In his own warped, self righteous mind, Lucemon thinks that the Digital World has gone rotten and wants to tear it apart bit by bit, bringing about the loss of much data and the deaths of countless Digimon, all so he can rebuild it in his image: a utopia where every Digimon that lives is stripped of their free will and free thought, with Lucemon as their shepherd. In reality, what he intends to create is a Hell in Digi-World, where all Digimon are slaves and the only one who will be happy is him. To do this, he corrupted Cherubimon and made him the villain for most of the series, then used his two Royal Knight followers to erase data from the Digital World, and then once he was free, he disposed of said followers just to power himself up. And he gets even worse when the digi-egg containing his darker side turns into Satan Mode, a being filled with nothing but darkness and malice. In this form, he attempts to claim the human world too! Not to mention all the various tortures he inflicts on the good guys For the Evulz. Appropriately described as "a spoiled child throwing away his toys when they ceased to entertan and satisfy him", Lucemon was, in the end, completely insane and never thoughtful of the lives of others: only himself, his pride, and hatred towards a world's existence not up to his standards.

Savers

 * Professor Akihiro Kurata is far and above the most despicable human villain to ever appear in the Digimon franchise, with his only goal being to Take Over the World and sadistically destroy all Digimon that he can't personally control all because of a grudge against Spencer Daimon and the Digimon he cared so much for. Creating the Gizumon, mechanical monstrosities that make other Digimon Deader Than Dead by stopping them from reincarnating like usual, having the heroes' memories wiped, blowing up DATS HQ and making the Data Squad into fugitives, and experimenting in creating half-Digimon hybrids were only the start for Kurata, as he then went on to craft a Weapon of Mass Destruction to kill thousands of Digimon on the continent of Eldradimon in one shot, forced the Teen Genius on the heroes' side to a Face Heel Turn by threatening to kill his Ill Girl little sister in an experiment, tried to replicate his hybrid experiments on said Ill Girl, and finally awakened a mighty Demon Lord in order to merge himself with it to destroy all of his enemies so that he could then wipe out all Digimon and have total control of both the Digital World and the human world. And his motives? Petty Greed, cowardice, prejudice, and Inferiority Superiority Complex.
 * Let's not forget him laughing hysterically as Ikuto/Keenan sobs over the loss of his surrogate father, whom his Gizumon have just permanently deleted, and how he duped poor, simple-minded Ivan into being one of his test subjects and minions with empty promises of paying him enough money to provide for his family. He is not just the most despicable human villain to ever appear in the Digimon franchise, he is the most despicable VILLAIN to ever appear in the franchise. Period. He even beat out Myotismon, the previous holder of the most complete monster in the series - not an easy feat.
 * A very good showing of just how horrid this guy is would be the reaction the heroes have to him in the last phase of the final battle. Basically, Kurata is the Digimon equivalent of Doctor Weil.
 * Lucemon makes another showing in Digimon World Data Squad as The Man Behind the Man for both Tsukasa Kagura and Creepymon in the game's story. The king of the Dark Area and the Chao-Mao Digimon, he's orchestrated everything in the plot by manipulating Kagura's feelings of jealousy to do whatever it took to revive himself. Through him, Lucemon made sure five children throughout the world were merged with one of the Code Keys of the Seven Deadly Sins to create Mao Digimon (The Great Demon Lords). He also has Creepymon attack Kosaburo Katsura and Biyomon to retrieve the Code Keys he's attained. After Creepymon assaults DATS HQ but is defeated, it's revealed Creepymon was made of a former DATS member Masaki Nitta, who was aware of his situation but unable to stop himself, and cannot go back to being human, essentially dying as data before his daughter. When Kagura finally releases the seal on Lucemon, he betrays Kagura and tells him how he deceived the scientist. After absorbing Kagura, Code of Key of Pride himself, Lucemon flees, but not before spreading the influence of the Dark Area. An evil Digimon who deemed himself infinite, immortal, and absolute, Lucemon is a remorseless Omnicidal Maniac who desired to engulf everything in the Dark Area.

Xros Wars

 * Tactimon bears special mention in that he was the one leader of Lord Bagra's armies with no redeeming features about him. His honor code is based solely on his standards of perfection rather than true honor and decency. Not only is he responsible for rounding up several good Digimon into labor camps, including Cutemon's parents, but he was prepared to torture Mikey, a child, to death, as opposed to the quick, painless execution he could have ordered (not that that's any better; it just shows how sadistic Tactimon is) and later tries to kill him with a beam canon blast. As if that wasn't bad enough, he's a full follower of the We Have Reserves mantra and has no compunctions about sacrificing his own subordinates for the sake of maintaining his supposedly perfect battle record, a practice that disgusted Dorulumon enough to defect from his side. Towards the end, he uses the negative energy of many Digimon in order to turn their data into dark spirits that he absorbs into his sword in order to boost his own power and ends up taking the life of Grademon without an iota of remorse. Once he got out into the real world, he proceeded to lay waste to the entire area in hopes of getting his enemies killed and taking away what they value. Shortly afterwards, he attempts to murder Angie and Jeremy with his bare hands. When it comes time for him to do battle with his enemies, all Tactimon can truly feel is pure excitement over the thrill of combat and bloodshed.
 * Another example from the same series is Neo Myotismon, an Expy of the original Myotismon and the second of Lord Bagra's Dark Generals. The ruler of the Vampire Land, he was characterized by only one thing: an undying thirst for power. He possesses familiar spirits known as Evilvils that seek out the life energy of Digimon and give it to him. Not only does he fuse both his minions and his enemies into himself, but he absorbs a great number of innocent Lopmon living in his domain in order to gain immortality from their hidden power. During his battle with the Fusion Fighters, he attempts to absorb Christopher's partner, Metal Greymon, into himself as well, forcing Metal Greymon into an And I Must Scream Body Horror.
 * The other particularly heinous Dark General is Gravimon, ruler of the Canyon Land. He uses his own core as a way to take Christopher hostage, and then reveals himself as a sadist who uses his cables to torture Christopher and probe his mind. He revels in the following Mind Rape, mercilessly playing off of Christopher's psyche until Christopher becomes broken enough to join him and obey his wishes. This set in motion the events that resulted in, among other things, the tragic death of Deckerdramon, which he ensured by dropping a large gravity attack on top of him. When fighting against the Fusion Fighters, Gravimon tries to physically crush both the kids and their Digimon in his grasp before trying to manipulate Christopher again with a Sadistic Choice - he'd inserted his core into Mikey's body, causing Mikey to endure agonizing pain in the process, and tells Christopher that the only way to destroy both the core and him is to kill Mikey. When Christopher refuses and surrenders instead, Gravimon deems him weak.
 * Quartzmon is the malicious and omnicidal Big Bad of Digimon Xros Wars the Young Hunters Leaping Through Time, who's responsible for spreading the Digi-Quartz that's destroying the multiverse, manipulated Ryouma into helping him all while using his partner Digimon as a puppet form for himself, absorbs the entire earth into himself, and uses the absorbed spirits of the heroes as a shield so that Tagiru can't attack him. On top of that, he's on D-Reaper levels of nastiness and freakishness.

Digimon Manga

 * C'mon Digimon: Shinichiro Josaki is a vicious bully obsessed with being the strongest Digimon Tamer in the world. As the spoiled heir to Josaki Industries, Shinichiro uses his resources to create the powerful Deathmon, to force children to use their pet-like Digimon to duel him under threat of physical violence. After invariably defeating the children's Digimon, Shinichiro gleefully destroys the Digimon just to torment them before moving on to his next victim. Shinichiro always studies up on his coming opponents so as to learn past traumas or fears and use those to further torture them for his own entertainment, notably trying to burn Kentarou's Digimon alive after learning that Ken once had a pet dog who'd died in a fire. Shinichiro was the first Digimon villain ever created, and still stands out as one of the franchise's most petty and cruel.
 * Digimon V-Tamer 01:
 * Daemon is the lord and master of all Virus Digimon and the driving force of evil in the story. Daemon kickstarts a war in the Digital World to slowly tear it apart and kill everything in his forces' paths, and regularly sends out his homicidal generals and commanders who put countless Digimon in danger. Callously murdering any of his minions who fail or attempt to betray him, Daemon corrupts young Neo Saiba into becoming a ruthless psychopath who kills hundreds of Digimon while training the powerful Arcademon in the ways of destruction. Though seemingly betrayed by Neo, Daemon arises in the end to reveal his true machinations, assuming control over Arcademon and boasting his plans to bring death and destruction to both the human and Digital Worlds, wiping out all life on both until only those that he deems worthy of his rule are left alive.
 * In this same manga, Myotismon is a bloodthirsty sadist with the ability to poison the souls of Digimon. Driving an entire town of Digimon to the brink of annihilation by forcing the residents to kill each other, Myotismon captures Tai and brutally beats the boy before attempting to force his Digimon Zero to butcher him, all to Myotismon's utter delight. Returning from his seeming death as VenomMyotismon, he takes part in a massacre of the Holy Castle, slaughtering everyone in his path while cackling before attempting to kill a group of Digimon children while forcing their teacher, Leomon, to watch.

Digimon World Series

 * Analogman is easily equal to Kurata as being the most vile human villain in the Digimon franchise (to make it clearer, Kurata is an Expy of this guy). A hacker that turned into an Omnicidal Maniac, he came to the Digital World, and sought to rule it by taking over Digimon and turning them into weapons. He saw them as little more than slaves to be used and abused as he saw fit, and says so more than once. The child protagonist, Mameo, fights against him and his partner Machinedramon, and wins. Analogman tries to kill Mameo with a bomb, but he dies instead..only to return as a ghost in Digimon: Digital Card Battle. The player character, heavily implied to be Hiro again (same exact design and all that) comes back to compete in a card tournament that takes a sinister twist when some of the villains from Adventure return. The Final Boss is apparently Venom Myotismon, but he is abruptly hijacked when Analogman, now a ghost, returns and possesses the vampire. Venom Myotismon’s mind is killed, but his body is now used by Analogman as a suit. Analogman challenges Hiro again, and loses, but before he can act on his revenge plan, he is sealed away in the “Deep Net.” Analogman returns again in Digimon World Next Order. Possessing Tsuzuki Shoma, Analogman tries one more campaign of terror against the Digital World, poisoning Digimon all over the world and forcibly turning them into Machinedramon clones. The process is painful, and worse, contagious. While it can be fought, it can also be enhanced by torturing the victims, as Analogman demonstrates more than once. His goal however is to take the Executor, Noir the Omnimon Zwart D, and use his power to destroy a Cosmic Keystone that would erase the entire Digimon multiverse from existence. Why? Just to see what happens next!

Wonder Swan Series

 * An underrated but important example is Millenniummon of the Digimon Wonder Swan Series. He is responsible for the cataclysmic events of the Digimon universe, mainly the Adventureverse, such as releasing Apocalymon. Also, when Milleniummon was destroyed, his data turned into Dark Spores and one buried itself into Ken's neck, exerting its influence on him. Since then, it grew within Ken and was later harvested and implanted into other children by Yukio Oikawa, meaning that Milleniummon is so evil that his data can corrupt anyone and turn them into insane and hateful beings, and Milleniummon is thus indirectly responsible for some of the events in Digimon Adventure 02. Oh, and he was made from the data of Machinedramon. From Bad to Worse really applied here.