History TheSociopath / MegaMan

** Sigma himself definitely fits the bill. Not so much in ''VideoGame/MegaManX1'', since he's a WellIntentionedExtremist concerned with the welfare of Reploid-kind. But from the very next game and beyond he's become a sadistic genocidal maniac obsessed with killing X and Zero by any means necessary, totally uncaring of the millions of lives he endangers in the process. That includes the Reploids he once fought for, who he shamelessly manipulates for his own ends while never genuinely caring for them outside of their functions as his tools. His ''[[VideoGame/MegaManMaverickHunterX Maverick Hunter X]]'' version ''especially'' counts as this because unlike his original counterpart who unwillingly became evil due to being infected by Zero's Maverick Virus which corrupted him, this version of Sigma ''willingly'' became evil through his own choice.

** Sigma himself definitely fits the bill. Not so much in ''VideoGame/MegaManX1'', since he's a WellIntentionedExtremist concerned with the welfare of Reploid-kind. But from the very next game and beyond he's become a sadistic genocidal maniac obsessed with killing X and Zero by any means necessary, totally uncaring of the millions of lives he endangers in the process. That includes the Reploids he once fought for, who he shamelessly manipulates for his own ends while never genuinely caring for them outside of their functions as his tools.

*** The Post-Game content of the third game has the BonusBoss Sirius, who is a surprisingly realistic sociopath. He clearly is incapable of viewing other beings as people, feels no remorse for anything, and takes genuine delight in the destruction he causes, seeing it all as a twisted game.

** Arashi Kazefuki from ''VideoGame/MegaManBattleNetwork2'' definitely counts. He's an abrasive creep introduced gassing Yai, a ''little girl'', so he can blackmail her rich parents into funneling their funds to Gospel. He knows full and well that she could die, and doesn't care at all. In fact, he's giddy at the prospect of killing her child-aged friends for getting in his way. He's also the only member of Gospel lacking a FreudianExcuse or HeelFaceTurn, with official materials stating that he turned to crime so he could blow off steam from his job at a gas company.

** [[TheSvengali Chrys Golds]] is a more down-to-earth example of this trope. As Sonia's abusive manager, he's a greedy slavedriver who views her as little more than his personal cashcow, and forces her to cater to his whims on threat of taking legal action against her if she defies him. He's also got a massive sense of entitlement as well as a horrible temper, both of which lead to him flying off the handle and punching Geo, a ''child'', when he stands up to him.

* While he may be an alien supercomputer completely detached from humanity, Ra Moon from ''VideoGame/SuperAdventureRockman'' is still a dyed-in-the-wool sociopath. He's manipulative, arrogant, cruel, and his ultimate plan is to kill all humans and robots on Earth so he can replace them with machines made in his image. While Dr. Wily's a piece of work himself, he at least loves his Robot Masters (or at least he did at the time). Ra Moon, on the other hand, [[LackOfEmpathy doesn't understand love as a concept, nor does he care to understand it.]]

** Sigma himself definitely fits the bill. Not so much in ''VideoGame/MegaManX1'', since he's a WellIntentionedExtremist concerned with the welfare of Reploid-kind. But from the very next game and beyond he's become a merciless genocidal maniac obsessed with killing X and Zero by any means necessary, totally uncaring of the millions of lives he endangers in the process. That includes the Reploids he once fought for, who he shamelessly manipulates for his own ends while never genuinely caring for them outside of their functions as his tools.
** [[AxCrazy Vile's]] a textbook example of a low-functioning sociopath. Thanks to a flaw in his circuitry, he's an unstable lunatic whose violent tendencies and knack for racking up collateral damage got him labeled as a Maverick. ''VideoGame/MegaManMaverickHunterX'' goes even further by emphasizing his sadistic tendencies, awful temper, and non-existent impulse control. No matter if it's the original timeline or the reboot, however, he had no bigger picture or noble goal in mind when he joined Sigma's rebellion. [[PsychoForHire He's simply an asshole who wants to wreak as much havoc as he can]], with the added bonus of [[EvilIsPetty terrorizing his hated rival X.]]

** While he didn't start off as one, Wily himself would gradually become this as the series progressed. By the end of the Classic games he has shown a willingness to endanger children, a love of skillfully manipulating others for his own ends, a complete lack of shame or remorse for his many crimes, and a total inability to see his robots as anything other than tools to be used and thrown away when it's convenient. By the time he'd create Zero and the Maverick Virus, his few redeeming qualities would be completely gone and replaced with a desire to unleash untold amounts of death and destruction across the planet purely out of hatred and spite towards Dr. Light. His ''Battle Network'' counterpart shows that he easily could have turned over a new leaf and let go of his hatred for his long-time rival, but this Wily was warped into a sociopathic monster by his enormous ego and refusal to accept that he had done anything wrong.

** Sigma himself definitely fits the bill. Not so much in ''VideoGame/MegaManX1'', since he's a WellIntentionedExtremist concerned with the welfare of Reploid-kind. But from the very next game and beyond he's become a cruel, manipulative, genocidal maniac obsessed with killing X and Zero by any means necessary, totally uncaring of the millions of lives he endangers in the process. That includes the Reploids he once fought for, who he shamelessly manipulates for his own ends while never genuinely caring for them outside of their functions as his tools.
** Vile's a textbook example of a low-functioning sociopath. Thanks to a flaw in his circuitry, he's an unstable lunatic whose violent tendencies and knack for racking up collateral damage got him labeled as a Maverick. ''VideoGame/MegaManMaverickHunterX'' goes even further by emphasizing his sadistic tendencies, awful temper, and non-existent impulse control.
** [[spoiler:Double]] from ''VideoGame/MegaManX4'' comes off as meek and friendly for most of X's campaign. But when he heads to space to take out the leadership of Repliforce, [[spoiler:Double turns out to be a Maverick spy running interference for Sigma, and has been manipulating X the whole time. The second he drops his bumbling nice guy shtick, he gleefully butchers a bunch of Maverick Hunters who trusted him before going after X, who he mocks for his willingness to trust others before enthusiastically attempting to kill him too.]]
** Silver Horn from ''VideoGame/MegaManXCommandMission'' is a psychotic control freak who runs his prison camp like a slaughterhouse. He tortures and dismembers the prisoners under his watch purely for the fun of it, and justifies it as him putting the "slimy vermin of the world" in their place despite their only "crime" being the fact that they oppose the violent rebels he's allied with. And not only is he unbelievably cruel, but he's got an ego bigger than the sun, as well as a total LackOfEmpathy.

* The ''VideoGame/MegaManBattleNetwork'' gives us the following:

** Arashi Kazefuki from ''VideoGame/MegaManBattleNetwork2'' definitely counts. He's an abrasive creep introduced gassing Yai, a ''little girl'', so he can blackmail her rich parents into funneling their funds to Gospel. He knows full and well that she could die, and doesn't care at all. In fact, he's giddy at the prospect of killing her child-aged friends for getting in his way. He's also the only member of Gospel lacking a FreudianExcuse or HeelFaceTurn, with official materials stating that he turned to crime so he could blow off steam.

** Chrys Golds is a more down-to-earth example of this trope. As Sonia's abusive manager, he's a greedy slavedriver who views her as little more than his personal cashcow, and forces her to cater to his whims on threat of taking legal action against her if she defies him. He's also got a massive sense of entitlement as well as a horrible temper, both of which lead to him flying off the handle and punching Geo, a ''child'', when he stands up to him.

* While he may be an alien supercomputer completely detached from humanity, Ra Moon from ''VideoGame/SuperAdventureRockman'' is still a dyed-in-the-wool sociopath. He's manipulative, arrogant, cruel, and his ultimate plan is to kill all humans and robots on Earth so he can replace them with machines made in his image. While Dr. Wily's a piece of work himself, he at least loves his Robot Masters. Ra Moon, on the other hand, [[LackOfEmpathy doesn't understand love as a concept, nor does he care to understand it.]]

** Arashi Kazefuki from ''VideoGame/MegaManBattleNetwork2'' comes across as this despite his minimal screentime. He's an abrasive creep introduced gassing Yai, a ''little girl'', so he can blackmail her rich parents into funneling their funds to Gospel. He knows full well that she could die, but not only is he completely uncaring, but he's enthusiastic at the prospect of killing her child-aged friends for getting in his way. He's also the only member of Gospel lacking a FreudianExcuse or HeelFaceTurn, with official materials stating that he turned to crime so he could blow off steam.
** Dr. Regal from the ''VideoGame/MegaManBattleNetwork'' series is not only a sociopath himself, but his ultimate plan is to turn humanity into an entire ''species'' of sociopaths. Manipulative, misanthropic, and perfectly willing to murder children or torture people to pursue his goals, Regal believes that all humans are just as vile and twisted as he is, and he seeks to corrupt them by using his Nebula Gray super-program to twist them into violent, rage-fueled shells of their former selves. He does the same with Net Navis by distributing Dark Chips, which give them a boost in power at the cost of slowly twisting them into evil berserkers.

* A sub-race of this trope is created in the latter parts of the ''VideoGame/MegaManX'' series in the form of the "New Generation Reploids", Reploids with a copy chip installed which allows them to [[TheShapeshifter take the form of]] any Reploid whose artificial DNA Data is included in the chip (and which can add more Reploids not initially included on the chip by somehow extracting the data from them during battles). The trouble is, the DNA Data of [[BigBad Sigma]], which has fundamentally merged by now with the [[ThisIsYourBrainOnEvil Maverick]] [[TheVirus Virus]] itself, ''was included in all the chips save for that of a prototype called Axl''. This allowed the "New Gen" Reploids to voluntarily "infect" themselves, essentially turning off their consciences at will, by accepting Sigma's twisted [[TheSocialDarwinist evolution philosophy]] as their core interpretation of right and wrong. Very quickly this culminated in two new Maverick outbreaks, from ''VideoGame/MegaManX8'' and ''VideoGame/MegaManXCommandMission'', both turning out to be the results of conspiracies spearheaded by a "New Gen" Reploid looking to take over the world.

* The ''VideoGame/MegaManStarForce'' games also its share of sociopathic villains the heroes face. In order of appearance:

** The second game has Gerry Romero, the director of "World Mysteries". Smug, self-absorbed, and manipulative, he takes advantage of Zack's desire to be helpful to further reinforce his Messie hoax, and [[HeKnowsTooMuch locks him in a submarine when Zack discovers his hoax]]. Once he becomes Plesio Surf, he's willing to drown an entire village just for the sake of ratings.
** The third has its BigBad, Mr. King, the leader of Dealer. In contrast to Cepheus (who was blinded by paranoia after so many people tried kill him to steal his throne) and Dr. Vega (who was driven by grief of losing the love of her life to war), King has no sympathetic or redeeming qualities, seeing everyone around him as a pawn to use and discard. He takes in orphaned children solely to use them as ChildSoldiers and sends them out on suicidal missions to further his ambitions, with only Jack and Tia surviving these missions. He even forces [[TheDragon Joker]] to self-destruct in an attempt to kill his enemies after the latter is defeated, and decides to destroy the world when he sees he's unable to control it.

** The third has its BigBad, Mr. King, the leader of Dealer. In contrast to Cepheus (who was blinded by paranoia after so many people tried to steal his throne) and Dr. Vega (who was driven by grief of losing the love of her life to war), King has no sympathetic or redeeming qualities, seeing everyone around him as a pawn to use and discard. He takes in orphaned children solely to use them as ChildSoldiers and sends them out on suicidal missions to further his ambitions, with only Jack and Tia surviving these missions. He even forces [[TheDragon Joker]] to self-destruct in an attempt to kill his enemies after the latter is defeated, and decides to destroy the world when he sees he's unable to control it.