**Listing this in the JRPG section since these cohesive uniformed villain organizations seem to mainly appear in Far East Asian works
These groups rarely make sense due to how much infighting there is, their inexplicable resources and secret supply chains that can't be tracked, high risk of infiltration/defection and leaks, etc. They also almost always are there to pad out the runtime of the series with a lot of filler struggles against fodder villain lieutenants without advancing the plot. But they are cool.
I have omitted smaller groups like the Sith, the Torna, the Stellaron Hunters, etc since there are too few of them at a time. And stuff like the Batman's Rogues Gallery or the Seven Warlords since they are not even pretending to be apart of the same faction.
=========================
List of the groups below with pictures and some music.
► The list
The Akatsuki from Naruto. Tied with Organization XIII as the most famous villain group, with their black cloaks still being sold at anime conventions today. They are a plethora of powerful ninjas that have been recruited by the masked man Tobi to terrorize villages across the land. The vast majority of them are only in the organization for personal gain or as an excuse to satiate their bloodlust. Only the three leaders of Tobi, Pain, and Madara have grander plans to remake the world, using the others as muscle. Also had a cool theme.

Organization XIII from Kingdom Hearts. Tied with the Akatsuki as the most famous villain group. They are artificial beings called Nobodies, kinda like clones of people. I don't remember what their motives were. KH's story after the first game became infamously incomprehensible.

The Nazgul from The Lord of the Rings. They are nine human kings who became immortals and serve Sauron, their kingdoms having long since fallen into ruin and have been forgotten. In the Peter Jackson movie trilogy, they get a menacing song with satanic chanting and lyrics about how they reject God and serve themselves.

The Soul Society captains from Bleach. The first adversarial group to appear in Bleach and in its first and most popular arc. They are the military junta of the afterlife, the Soul Society. Ichigo breaks into the Soul Society trying to save Rukia from execution and causes confusion, and the captains and their teams are mobilized to track the mysterious intruder down. After some confusion, they begin to suspect and turn on each other. After the Soul Society arc, they become allies to the protagonist.

The Espada from Bleach. The second adversarial group from Bleach, appearing right after the Soul Society arc. At the climax of the Soul Society arc, it is revealed that one of the captains, Aizen (guy in the glasses above), is a traitor plotting to take over the afterlife and was trying to manipulate the other captains into turning on each other. He flees from the Soul Society and recruits these guys as his muscle. Most of them are your usual serial killers who only want to prove their strength and so on. They have a flamenco guitar themesong.

The Phantom Troupe from Hunter x Hunter. A vagrant gang/brotherhood of criminals with no real grandiose ambitions. Unlike most villain groups, there is no infighting and most if not all of them seem to care about each other and one of them chooses to die rather than out the others. They also lay down arms and give up their villain plan when their leader is taken hostage rather than risk his death. They have a moody choir theme.

Ouroboros from the Trails/Legend of Heroes series. This is actually more like two different organizations in one, or rather there is a stark divide between the inner circle and the rest. At the top, you have the Grandmaster, a mysterious woman (is she the goddess Aidios? A survivor for the Great Collapse? Someone from the Outside world?), who talked to and recruited seven people as her Anguis. The Anguis are in on her secret plan to do... something. We are 13 games, $600, and 1,000+ hours into this story and still don't know anything more about what the bad guys want since they were introduced at the end of the first game. Below the Anguis, you have the 20 or so Enforcers, who are the outsourced muscle, your usual bloodthirsty serial killers or stockholm syndromed troubled souls only in here for the advantages of being in a network and yadda yadda. None of them know what the Grandmaster or the Anguis really want, and don't care. The Anguis phone up the Enforcers on the contact list and ask them if they want to come kill people at an op and play with fancy magical artifacts and mechs and socialize. Enforcers don't have to show up for work or obey orders. The conditions for becoming an Enforcers have become really loose, it seems like anyone random teenager can just become one now if they want. The Enforcers are also a revolving door with people constantly leaving and new guys coming in. How this organization hasn't been infiltrated and their list of secret bases, flying airship carriers, 13 factories, and so on hasn't been leaked to the heroes yet is beyond me. They will almost certainly get off scott free by the end of the series in spite of all they have done. They have a couple neat themes from the second game that weren't carried over to the other games.

The Enforcers. Oddly, there appears to be no art of the Grandmaster and the Seven Anguis, the actual core of the organization.
The Fatui Harbingers from Genshin Impact. A special organization commissioned by the Tsarista, the Cryo Archon and sovereign of the main antagonistic country of Snezhnaya. They have been granted authority over Snezhnaya's military and government, and also have diplomatic authority too. Their goal is to to infiltrate the other six countries of the Genshin world and steal their respective Archon's Gnosis (magical artifact given by the gods from Celestia). The Fatui's leader Pierro hates Celestia, a floating island in the sky from which the gods annihilated Pierre's home country of Khaenri'ah and forced the archons to kill each other in a bloodbath. Presumably the Tsarista and Pierre intend to use the seven Gnosis to create a superweapon to shoot down Celestia. Unlike most other villain groups, many of them - about half - seem to be truly loyal and onboard with the plan, with only a few of them being your usual mad scientists and serial killers who are just here for the advantages of being in a network. They are still prone to infighting and undermining each other.

The Ark Angels from Final Fantasy XI. They are artificial beings created by the ancient Kuluu race to defend their five Mothercrystals which powered their civilization. In the first expansion, they are revived to help two surviving Kuluu try to reactivate the floating city of Tu'lia and reestablish the Kuluu civilization and take over/lead/remake the world. They are not really characters and do not have lines outside of their boss battle. Their introductory scene retcons them into curbstomping the base game's final boss, the Shadowlord (who had a change of heart and stayed behind to hold off the Ark Angels while the heroes fled from the final dungeon). Near the end of the expac, you can fight them each individually, or you can form an 18 man alliance and enter a special challenge battle to fight all of them at once + their two pets (a panther and a small wyvern).

The Judge Magisters from Final Fantasy XII. The highest ranking military officers in the Archadian Empire under the Emperor, though they initially do not have full authority over the government like the Soul Society Captains and the Fatui do, since there is also a Senate. Midway through the game they enter into a conspiracy with the oldest prince to arrest the Senate and seize control of the empire to enact a plan to repel the adversarial and encroaching enemy superpower and to clear the way for the youngest prince's rule. In the main story they are fought individually, but in the non-canon special bonus trial mode, the final 100th trial has you fight all five of them at once.

The Luminary Knights from Granblue Fantasy, the highest ranking generals in the expansionist Istavion Empire. They are antagonists for the first two arcs, usually messing around in other kingdoms. Among these knights include kings and princes. They are servants of the True King, a prophet and sovereign who rules an empire spanning multiple Skydoms and can see the future. They wage a war to save the world from an invisible enemy that is on the verge of total victory: demons who can manipulate the timeline and wipe people and civilizations from existence with most people being unaware what is even happening. The demons already won. The True King appoints the player character as the next True King (and you inherit his power that allows you to remain cognizant of changes to the timeline) and then he erases himself from existence to buy time for the world with only you being aware of his sacrifice. The other Luminaries become your vassals as you carry on to save the world.
The Horde from World of Warcraft. Probably going to get a reflex reaction from normies for this one since they are playable and the game often tries to pass them off as totes good guys, but these guys are more villainous than most groups on this list. They got started on their homeworld willingly drinking demon blood which drove them berserk, and then they began raping and murdering their peaceful Draenei neighbors and paving a highway out of their bones. They destroyed their homeworld and then sacrifice thousands of Draenei captives to fuel a portal to another world to invade that. They ravaged several human kingdoms before they were finally defeated and put into internment camps. Twenty years later they break out of their internment camps and sail to another continent to build their empire. They recruit an undead slaver who is brewing a plague to eliminate all life and raise them as her slaves. They destroy dozens of towns and zones in the game, their most recent achievement having been breaking a truce and invading an elf nation to set their treehouse country on fire, cooking most of the elf race alive, and almost every single Horde leader was complicit in this and didn't throw their leader under the bus until way later when it was convenient to do so knowing that they would get a white peace. These guys are capital E Evil. But they look so cool.

The Warlords from World of Warcraft: Warlords of Draenor. Almost all of them are chieftains of Orcish clans that have rallied together to form the Iron Horde and conquer the universe. Their initial leader is Grommash Hellscream, but after a string of losses and the demise of most of the other Warlords, he gets ousted by the evil warlock Gul'dan, who then takes over.

The Ascians from Final Fantasy XIV. Cutting it real close since only four (or five) of them are characterized and only one (or two) of them is popular. The other nine are noncharacters. For the first 2/3rds of the story, they are portrayed as generic satan worshippers running around wrecking havoc for vague reasons. In Shadowbringers the the worldview gets turned upside down and they are retconned into being the titular Convocation of Fourteen, a Knights of the Round Table-esque organization and senate of the ancient civilization of Amaurot. The player character is revealed to have once been a member of the Convocation in his past life but became a Mordred who defected from the Convocation and has become their enemy and served the false god Hydaelyn, who is just a crazy selfhating genocidal wizard posing as a goddess. After the Sundering in which both the world and its inhabitants were divided into 14 pieces, the surviving Ascians have embarked on a eons spanning undertaking to stitch the fragmented worlds and humanity back together and restore the world. They are the good guys (actually, everybody in this game is kinda evil because there is no true God in this setting and everyone - including the hero - is killing people based off of their arbitrary feelings™, but the game bends over backwards pretending everyone is inherently good), but since this is a game made by Japanese they are made out to be the bad guys, so you kill your former comrades and doom the world to forever remain broken. Good job hero!


Organization XIII from Kingdom Hearts. Tied with the Akatsuki as the most famous villain group. They are artificial beings called Nobodies, kinda like clones of people. I don't remember what their motives were. KH's story after the first game became infamously incomprehensible.

The Nazgul from The Lord of the Rings. They are nine human kings who became immortals and serve Sauron, their kingdoms having long since fallen into ruin and have been forgotten. In the Peter Jackson movie trilogy, they get a menacing song with satanic chanting and lyrics about how they reject God and serve themselves.
We renounce our Maker.
We cleave to the darkness.
We take unto ourselves all power and glory.
Behold! We are the Nine,
Of Arda
The Lords of Unending Life.

The Soul Society captains from Bleach. The first adversarial group to appear in Bleach and in its first and most popular arc. They are the military junta of the afterlife, the Soul Society. Ichigo breaks into the Soul Society trying to save Rukia from execution and causes confusion, and the captains and their teams are mobilized to track the mysterious intruder down. After some confusion, they begin to suspect and turn on each other. After the Soul Society arc, they become allies to the protagonist.

The Espada from Bleach. The second adversarial group from Bleach, appearing right after the Soul Society arc. At the climax of the Soul Society arc, it is revealed that one of the captains, Aizen (guy in the glasses above), is a traitor plotting to take over the afterlife and was trying to manipulate the other captains into turning on each other. He flees from the Soul Society and recruits these guys as his muscle. Most of them are your usual serial killers who only want to prove their strength and so on. They have a flamenco guitar themesong.

The Phantom Troupe from Hunter x Hunter. A vagrant gang/brotherhood of criminals with no real grandiose ambitions. Unlike most villain groups, there is no infighting and most if not all of them seem to care about each other and one of them chooses to die rather than out the others. They also lay down arms and give up their villain plan when their leader is taken hostage rather than risk his death. They have a moody choir theme.

Ouroboros from the Trails/Legend of Heroes series. This is actually more like two different organizations in one, or rather there is a stark divide between the inner circle and the rest. At the top, you have the Grandmaster, a mysterious woman (is she the goddess Aidios? A survivor for the Great Collapse? Someone from the Outside world?), who talked to and recruited seven people as her Anguis. The Anguis are in on her secret plan to do... something. We are 13 games, $600, and 1,000+ hours into this story and still don't know anything more about what the bad guys want since they were introduced at the end of the first game. Below the Anguis, you have the 20 or so Enforcers, who are the outsourced muscle, your usual bloodthirsty serial killers or stockholm syndromed troubled souls only in here for the advantages of being in a network and yadda yadda. None of them know what the Grandmaster or the Anguis really want, and don't care. The Anguis phone up the Enforcers on the contact list and ask them if they want to come kill people at an op and play with fancy magical artifacts and mechs and socialize. Enforcers don't have to show up for work or obey orders. The conditions for becoming an Enforcers have become really loose, it seems like anyone random teenager can just become one now if they want. The Enforcers are also a revolving door with people constantly leaving and new guys coming in. How this organization hasn't been infiltrated and their list of secret bases, flying airship carriers, 13 factories, and so on hasn't been leaked to the heroes yet is beyond me. They will almost certainly get off scott free by the end of the series in spite of all they have done. They have a couple neat themes from the second game that weren't carried over to the other games.

The Enforcers. Oddly, there appears to be no art of the Grandmaster and the Seven Anguis, the actual core of the organization.
The Fatui Harbingers from Genshin Impact. A special organization commissioned by the Tsarista, the Cryo Archon and sovereign of the main antagonistic country of Snezhnaya. They have been granted authority over Snezhnaya's military and government, and also have diplomatic authority too. Their goal is to to infiltrate the other six countries of the Genshin world and steal their respective Archon's Gnosis (magical artifact given by the gods from Celestia). The Fatui's leader Pierro hates Celestia, a floating island in the sky from which the gods annihilated Pierre's home country of Khaenri'ah and forced the archons to kill each other in a bloodbath. Presumably the Tsarista and Pierre intend to use the seven Gnosis to create a superweapon to shoot down Celestia. Unlike most other villain groups, many of them - about half - seem to be truly loyal and onboard with the plan, with only a few of them being your usual mad scientists and serial killers who are just here for the advantages of being in a network. They are still prone to infighting and undermining each other.

The Ark Angels from Final Fantasy XI. They are artificial beings created by the ancient Kuluu race to defend their five Mothercrystals which powered their civilization. In the first expansion, they are revived to help two surviving Kuluu try to reactivate the floating city of Tu'lia and reestablish the Kuluu civilization and take over/lead/remake the world. They are not really characters and do not have lines outside of their boss battle. Their introductory scene retcons them into curbstomping the base game's final boss, the Shadowlord (who had a change of heart and stayed behind to hold off the Ark Angels while the heroes fled from the final dungeon). Near the end of the expac, you can fight them each individually, or you can form an 18 man alliance and enter a special challenge battle to fight all of them at once + their two pets (a panther and a small wyvern).

The Judge Magisters from Final Fantasy XII. The highest ranking military officers in the Archadian Empire under the Emperor, though they initially do not have full authority over the government like the Soul Society Captains and the Fatui do, since there is also a Senate. Midway through the game they enter into a conspiracy with the oldest prince to arrest the Senate and seize control of the empire to enact a plan to repel the adversarial and encroaching enemy superpower and to clear the way for the youngest prince's rule. In the main story they are fought individually, but in the non-canon special bonus trial mode, the final 100th trial has you fight all five of them at once.

The Luminary Knights from Granblue Fantasy, the highest ranking generals in the expansionist Istavion Empire. They are antagonists for the first two arcs, usually messing around in other kingdoms. Among these knights include kings and princes. They are servants of the True King, a prophet and sovereign who rules an empire spanning multiple Skydoms and can see the future. They wage a war to save the world from an invisible enemy that is on the verge of total victory: demons who can manipulate the timeline and wipe people and civilizations from existence with most people being unaware what is even happening. The demons already won. The True King appoints the player character as the next True King (and you inherit his power that allows you to remain cognizant of changes to the timeline) and then he erases himself from existence to buy time for the world with only you being aware of his sacrifice. The other Luminaries become your vassals as you carry on to save the world.
The Horde from World of Warcraft. Probably going to get a reflex reaction from normies for this one since they are playable and the game often tries to pass them off as totes good guys, but these guys are more villainous than most groups on this list. They got started on their homeworld willingly drinking demon blood which drove them berserk, and then they began raping and murdering their peaceful Draenei neighbors and paving a highway out of their bones. They destroyed their homeworld and then sacrifice thousands of Draenei captives to fuel a portal to another world to invade that. They ravaged several human kingdoms before they were finally defeated and put into internment camps. Twenty years later they break out of their internment camps and sail to another continent to build their empire. They recruit an undead slaver who is brewing a plague to eliminate all life and raise them as her slaves. They destroy dozens of towns and zones in the game, their most recent achievement having been breaking a truce and invading an elf nation to set their treehouse country on fire, cooking most of the elf race alive, and almost every single Horde leader was complicit in this and didn't throw their leader under the bus until way later when it was convenient to do so knowing that they would get a white peace. These guys are capital E Evil. But they look so cool.

The Warlords from World of Warcraft: Warlords of Draenor. Almost all of them are chieftains of Orcish clans that have rallied together to form the Iron Horde and conquer the universe. Their initial leader is Grommash Hellscream, but after a string of losses and the demise of most of the other Warlords, he gets ousted by the evil warlock Gul'dan, who then takes over.

The Ascians from Final Fantasy XIV. Cutting it real close since only four (or five) of them are characterized and only one (or two) of them is popular. The other nine are noncharacters. For the first 2/3rds of the story, they are portrayed as generic satan worshippers running around wrecking havoc for vague reasons. In Shadowbringers the the worldview gets turned upside down and they are retconned into being the titular Convocation of Fourteen, a Knights of the Round Table-esque organization and senate of the ancient civilization of Amaurot. The player character is revealed to have once been a member of the Convocation in his past life but became a Mordred who defected from the Convocation and has become their enemy and served the false god Hydaelyn, who is just a crazy selfhating genocidal wizard posing as a goddess. After the Sundering in which both the world and its inhabitants were divided into 14 pieces, the surviving Ascians have embarked on a eons spanning undertaking to stitch the fragmented worlds and humanity back together and restore the world. They are the good guys (actually, everybody in this game is kinda evil because there is no true God in this setting and everyone - including the hero - is killing people based off of their arbitrary feelings™, but the game bends over backwards pretending everyone is inherently good), but since this is a game made by Japanese they are made out to be the bad guys, so you kill your former comrades and doom the world to forever remain broken. Good job hero!




