Here I will show and talk about the villains from Digimon Adventure and Digimon Adventure 02.
Let's start with the ones from Digimon Adventure.
This is Devimon, an evil Digimon who got destroyed by T. K.'s Angemon.
Angemon had to turn the last of his life into power to be able to destroy Devimon, but luckily was turned into a Digi-Egg, so T. K. was able to keep Patamon.
This guy here is Etemon, a monkey like Digimon that is the worst Elvis impersonator.
Here is what you need to know. If you try to force a Digimon to Digivolve without the power of your Crest, the Digimon will become corrupted. That's what happened with Tai once. He decided to make Agumon Digivolve to Ultimate since he just got his Crest and was able to. But he made Agumon Digivolve without the power of his Crest, and Agumon turned into SkullGreymon, an evil Digimon. So SkullGreymon wasn't really a villain, but I wanted to include him because he looked so cool!
This here is Myotismon, an evil Digimon that is lazy, thus sends his minions out to destroy the DigiDestined.
When he finds out that there is an 8th child (DigiDestined) still in the Human World he goes to the Human World after her. As most of you know, the 8th child is Kari, Tai's little sister.
At the hour of the beast, 6 seconds and 6 minutes past 6 o' clock, Myotismon transformed into his Mega form, VennomMyotismon.
This is Piedmn, the leader of the Dark Masters.
This is MetalSeadramon, a member of the Dark Masters
This is Puppetmon, another member of the Dark Masters.
He actually created his own city all by himself, I think.
Tai and the others ventured into the city and Machinedramon got destroyed a while later by WarGreymon.
This Digimon was created from the lives of Digimon who died trying to Digivolve.
Because he was created out of sadness of the ones that died, he was cursed to be sad forever.
Digimon Adventure 02 Villains
Here I talk about the villains of Digimon 02.
This first guy is the Digimon Emperor.
As a kid, Ken (the Digimon Emperor's real name) had an older brother named Sam.
Everybody loved Sam because he was "the perfect son," as his and Ken's parents called him.
Ken got jealous because he thought Sam was getting all of the attention.
In other words, he thought that since his brother got all of the attention from their parents (from other people too,) that his parent's didn't love him and only loved Sam. He wanted his parents to love him and he wanted to get some attention, too.
So he thought that if his brother weren't here, that he would be the only one his parents could love so that way he could get all of the attention, and he said, "I wish Sam would just dissappear!"
And on that same day, his brother Sam died because of an accident.
Ken told Sam at Sam's grave that he really didn't mean it when he wished he (Sam) would just dissappear.
Then, Ken got a letter from an anonymous person on the internet.
It told him to use the Digivice that he and his brother found before his brother had died.
So, he did just that.
He went to the Digital World and got his Digimon partner, Wormmon.
Later, a Millenniummon gave him a Dark Spore, which made him better at schoolwork and at sports, but the Dark Spore also made him evil.
That evilness also made him the Digimon Emperor.
He became an evil ruthless person who didn't care about anything except using and hurting Digimon for his own pleaseure.
This is MetalGreymon (not the original MetalGreymon, but the one with the Viruas attribute.)
You see, when Ken was still the Digimon Emperor, he once captured Tai's Agumon and made Agumon Dark Digivolve to SkullGreymon; not too long later, he made Agumon Dark Digivolve into MetalGreymon (Virus.)
If you look on the top of him, Ken as the Digimon Emperor is on his head.
When Ken was still the Digimon Emperor, he ordered Wormmon to create a him a DEigimon, so wormmon put together pieces of Digimon thus creating this.
When Veemon got to Golden Armor Digivolve to Magnamon, Kimeramon was actually a challenge to Magnamon.
When Wormmon had very little strength left, he gave it to Magnamon thus re-energizing Magnamon making Magnamon able to destroy Kimeramon.
After Magnamon destroyed Kimeramon, the 02 DigiDestined went to talk to the Digimon Epmeror for a few minutes, and then the Digimon Empeor noticed what the DigiDestined had said and then noticed what he was doing, and thus became good again.
Because Wormmon gave the last of his energy to Magnamon so Magnamon could destroy Kimeramon, he got turned back into a Digi-Egg, and like in 2 episodes later Ken goes back to the Digital World and retrieves Wormmon's Digi-Egg and he and Wormmon became friends again.
This is Arukenimon when she is transformed to look like a human.
This is Arukenimon when she is not in her human form.
This is Mummymon when he is transformed to look like a human.
He is usually with Arukenimon trying to get rid of the 02 DigiDestined.
He LOVES Arukenimon to DEATH! LOL!
This is Mummymon when he is not in his human form.
This is BlackWarGreymon, WarGreymon's evil look-alike.
Arukenimon used her Spirit Needle attack to transform tons of Control Spires into BlackWarGreymon.
Control Spire Digimon aren't supposed to have a heart (feelings) but this guy did.
His goal in life was to find his true opponent.
This next part was copied from Wikipedia and is in no way mine.
Oikawa was born around 1959. As a child, he was an extreme loner; mocked and shunned by classmates. A boy around the same age, Hiroki Hida, became his only friend.
Hiroki was obsessed with the idea that he could communicate with the Digital World through old video games and he shared the same obsession with Yukio. They both ended up communicating with the Digital World, spending hours and hours on the video games talking with the Digital World.
Hiroki's father, Chikara, became very worried about the obsession his son had. He forbade his son from playing video games and tried to separate Hiroki from Oikawa, fearing that they were spending too much time together. The two were heartbroken but remained close friends; they made the promise to each other that, one day, they would go to the Digital World and they started sharing their dreams and never told anyone else about it.
In adulthood, Oikawa worked with Ken Ichijoujii's father as a computer programmerr, while Hiroki became a police officer and started a family. Evidently, the two continued to study the Digital World; in 1995, when the Highton View Terrace (Hikarigaoka in the original) incident occurred, Oikawa went to investigate and worked alongside Nancy Takaishi (Natsuko), T.K. Takaishi's mother. There, Oikawa learned that Highton View Terrace served as a gateway to the Digital World.
In 1999, Hiroki took a bullet for an important political figure and died from his wounds. Oikawa was utterly devastated by the death of Hiroki, though he still continued his investigation of the Digital World. He was angry and sad, however, since Hiroki had broken his promise.
On August 3, 1999, Oikawa was present in Tokyo Harbor when the DigiDestined defeated Myotismon. He saw the Digital World in the sky and the DigiDestined returning to the Digital World. He had raised a framed picture of Hiroki to the sky, crying that he wanted Hiroki to see their dream realized. Oikawa was soon possessed by the disembodied spirit of Myotismon after it promised to make his wish to go to the Digital World come true. He wasn't consciously aware of the spirit, but it gave him the knowledge to create two Digimon to serve him: Arukenimon and Mummymon, created by combining data with his own DNA. While they could travel to the Digital World, he still could not. He knew he would have to weaken the boundaries between the worlds to accomplish this. After seeing Ken Ichijouji in the funeral of the boy's older brother and sensing his Dark Spore (Dark Seed), he manipulated Ken into becoming the Digimon Emperor (Digimon Kaiser in the original).
Digimon Adventure 02 As the Digimon Kaiser, Ken constructed Control Spires which began to weaken the boundaries and upset the balance of the many worlds. But when the DigiDestined defeated the Digimon Emperor and began demolishing the towers, Oikawa knew he would have to take action. He sent Arukenimon and Mummymon to battle against the DigiDestined and complete the Emperor's work. Arukenimon and Mummymon's plan of having BlackWarGreymon, one of Arukenimon's creations, destroy the Destiny Stones almost succeeded, but was thwarted at the last minute by Azulongmon. Following this, Oikawa decided it would be easier to weaken the barrier from his own side.
Oikawa instructed Arukenimon to open the Digital Gates in the entire world. During Christmas day, the Japanese DigiDestined traveled around the world and helped close the gates, Arukenimon and Mummymon drove around Tokyo in a truck and kidnapped twenty children. The following day, they kidnapped Ken as well, so that Oikawa could scan his Dark Spore and pass it on to the children. After this, Oikawa, Arukenimon and Mummymon ran off to hide in a vacation house in the mountains, but BlackWarGreymon came from the Digital World to destroy them. BlackWarGreymon sensed that Arukenimon and Mummymon were not natural Digimon, which Oikawa confirmed. He also sensed that Oikawa belonged to neither world, due to Myotismon's spirit. Oikawa received unlikely help from the Chosen Children, as they knew they might need him to take the Dark Spores out of the children. As BlackWarGreymon battled WarGreymon and Imperialdramon Fighter Mode Oikawa and his henchmen fled and returned to Oikawa's run-down apartment in Tokyo.
The next day, he confronted Cody Hida, knowing he was a DigiDestined, but not knowing that he was Hiroki's son. However, as he saw the name Hida on Cody's bag, he realized that this is his best friend's son and fled. That night, he visited Hiroki's grave, plagued by memories and guilt. He didn't let this stop him, however, and went on to absorb the fower of the Dark Spore of Noriko Kawada, whose Spore blossomed earlier than expected. He succeeded in this despite the DigiDestined's attempts to stop him. Unexpectedly, Chikara, Cody's grandfather and kendo instructor, happened upon them tried to talk Oikawa down, almost succeeding. However, Myotismon interfered, using the power he absorbed from the flower, and tries to kill the old man. BlackWarGreymon intercepted the attack and was fatally injured. While everyone was shocked from this, Arukenimon and Mummymon pulled Oikawa away from the scene. BlackWarGreymon, now knowing who/what Oikawa really was, flew into the sky and used the last of his power to seal the Highton View Terrace gate to the Digital World.
After the other Dark Spores had grown strong enough to bloom into flowers, Oikawa gathered all of the children together in Highton View Terrace and used the Dark Spores to try and open a gate to the Digital World. However, he did not know that BlackWarGreymon had sealed the gate with the last of his power. Myotismon sensed this, and made Oikawa open up a portal to an entirely different world, the world of dreams. He entered the portal along with the Dark Spore children, his henchmen and the younger DigiDestined, who made it through the portal at the last second. Oikawa was confused when he realized he didn't reach the Digital World, and Myotismon's spirit used the powers of the dream world to remind Oikawa that he had possessed him. Following this, Oikawa fell to his knees in pain and the spirit of Myotismon left him as his mirror image. It absorbed the Dark Spores of the children and transformed into MaloMyotismon.
The spirit's departure left Oikawa with barely any life for himself, but he was able to witness the final battle between all of the DigiDestined from around the world against MaloMyotismon. After the battle was over, Cody went back to the world of dreams through a rip that was created in the barrier between the worlds, and tried to bring Oikawa to the Digital World. Thanks to his best friend's son, he finally made it to the Digital world (or at least, his hand/fingers did) and met the Digimon he had seen so long ago in the video game, Datirimon, who said he was Oikawa's partner Digimon. Oikawa apologized to the DigiDestined for what he had done before using the power of the world of dreams to repair the damaged Digital World with his own body, changing his body into data (shown in the form of a swarm of white/rainbow butterflies). His spirit lived on as a part of the Digital World itself. This makes Oikawa the only known DigiDestined to die and never recover. 25 years later, his spirit (in the form of butterflies) is still in the digital world.
So, for those who didn't pick this up already, his best friend Hiroki, was actually Cody's father.
After VenomMyotismon was defeated, apparently, he was able to Digivolve past the mega into some sort of Super Mega form, MaloMyotismon.
He was the one who possessed Oikawa.