History ArchEnemy / Arrowverse

** Earth-2's Hunter Zolomon, a.k.a Zoom, who pulled the same trick as Thawne did by impersonating "Jay Garrick" (the Earth-3 counterpart to Barry's father, no less) and presenting himself as an ally all so he could steal Barry's speed to cure himself of Velocity poisoning. As Zoom, he beat the crap out of Barry several times, once breaking his back and humiliating him in front of all of Central City. Then there's what he did to the rest of Team Flash: he kidnapped Jesse Wells to blackmail Harry into helping him and betraying the rest of the team, kidnapped Wally to force Barry to give up his speed, and then kidnapped Caitlin to invoke StockholmSyndrome on her, traumatizing her and leaving her with PTSD. And, for the final finishing touch, he murdered Henry Allen ''in the very same spot where Eobard Thawne murdered Nora Allen'', right in front of Barry's eyes. After that, Barry wants Zolomon deader than dead and looked very ready to do the deed, inspiring a deep hatred in him that not even Thawne was capable of. While Barry ultimately didn't kill him (though he was very close to doing so), he did engineer the events that led to the Time Wraiths subjecting Zolomon to a FateWorseThanDeath by becoming the Black Flash, who would still haunt Barry as an agent of the Speed Force. When he encounters Zolomon again during a time traveling adventure, Barry instantly turns cold and makes it clear time has not healed what Zoom did.

* Iris West had Eva McCulloch's Mirrorverse doppelgänger, the Mirror Monarch.

[[caption-width-right:350 "[[Characters/ArrowverseEobardThawne We're]] enemies, [[Characters/ArrowverseBarryAllen rivals]], opposites, [[Recap/TheFlash2014S1E23FastEnough reverses of one another]]."]]

[[caption-width-right:350:: "[[Characters/ArrowverseEobardThawne We're]] enemies, [[Characters/ArrowverseBarryAllen rivals]], opposites, [[Recap/TheFlash2014S1E23FastEnough reverses of one another]]."'']]

[[caption-width-right:350:'' '''[[Characters/ArrowverseEobardThawne Reverse Flash]]''': "[[Characters/ArrowverseBarryAllen We're]] enemies, rivals, opposites, reverses of one another."'']]

* John Constantine has Papa Midnite (a Voo-Doo crime king and John's EvilCounterpart in magic), the demon Nergal (who killed Astra Logue and took her soul to Hell in an exorcism gone wrong after John summoned him), and Neron (who possessed John's lover Desmond, resulting John resorting to sending Desmond to Hell with Neron).

* John Constantine has Papa Midnite (a Voo-Doo crime king and John's EvilCounterpart in magic), the demon Nergal (who killed Astra Logue and took her soul to Hell in an exorcism gone wrong after John summoned him), and Neron (who possessed John's lover Desmond, resulting John sending Desmond to Hell alongside Neron).

* John Constantine has Papa Midnite, a Voo-Doo crime king and John's EvilCounterpart in magic, and the demon Nergal, who killed Astra Logue and took her soul to Hell in an exorcism gone wrong after John summoned him.

[[caption-width-right:350:'' '''Reverse Flash''': "We're enemies, rivals, opposites, reverses of one another."'']]

!''Franchise/{{Arrowverse}}''
ArchEnemy in this series.

!! ''The Flash (1990)''
* Nicholas Pike became this to the Flash after he murdered Barry's brother Jay.

** [[Characters/ArrowverseEobardThawne Eobard Thawne]], a.k.a the Man in the Yellow Suit, a.k.a the Reverse-Flash. Thawne murdered Barry's mom, framed his dad for it, and then manipulated Barry's life under the guise of "[[TeamDad Dr. Harrison Wells]]". He is Barry's most personal enemy, and their destinies are so intertwined that one cannot exist without the other, thus they will never be fully rid of one another -- a fact that only makes them hate each other more. Even when talking about his other hated enemies with his daughter Nora, Barry makes it clear to her that Thawne is the one he hates the most, [[spoiler: especially after Thawne manipulated Nora into saving him from his execution at Iron Heights in 2049, resulting in that version of Nora being RetGoned.]]

** Earth-2's Hunter Zolomon, a.k.a Zoom, who pulled the same trick as Thawne did by impersonating "Jay Garrick" (the Earth-3 counterpart to Barry's father, no less) and presenting himself as an ally all so he could steal Barry's speed to cure himself of Velocity poisoning. As Zoom, he beat the crap out of Barry several times, once breaking his back and humiliating him in front of all of Central City. Then there's what he did to the rest of Team Flash: he kidnapped Jesse Wells to blackmail Harry into helping him and betraying the rest of the team, kidnapped Wally to force Barry to give up his speed, and then kidnapped Caitlin to invoke StockholmSyndrome on her, traumatizing her and leaving her with PTSD. And, for the final finishing touch, he murdered Henry Allen ''in the very same spot where Eobard Thawne murdered Nora Allen'', right in front of Barry's eyes. After that, Barry wants him deader than dead and looked very ready to do the deed, inspiring a deep hatred in him that not even Thawne was capable of. While Barry ultimately didn't kill him (though he was very close to doing so), he did engineer the events that led to the Time Wraiths subjecting Zolomon to a FateWorseThanDeath by becoming the Black Flash, who would still haunt Barry as an agent of the Speed Force. When he encounters Zolomon again during a time traveling adventure, Barry instantly turns cold and makes it clear time has not healed what Zoom did.
** After Snart [[Series/LegendsOfTomorrow leaves with Rip Hunter]], Grodd takes his place as Barry's top non-speedster enemy, being a constant thorn in the Scarlet Speedster's side and his most dangerous non-ArcVillain enemy. By the time "Attack on Gorilla City" happens, Grodd has forgone all former attachments and his sole concern is getting revenge on Barry for exiling him to Earth-2 by any means necessary. Barry even contemplates killing Grodd to end his evolving threat, which Grodd even encourages him to do, seeing it as the only way to "end it" between them. Eventually, [[spoiler:the events of ''Series/CrisisOnInfiniteEarths2019'' cause Grodd to have a HeelFaceTurn, and he and Barry form a truce]].

* In the "Flashpoint" timeline, Wally West had Edward Clariss, a.k.a the Rival, for an arch foe. However, in the main timeline, he has yet to develop a personal animosity with an adversary.

* During her time as XS in the present day, the Pre-Crisis Nora West-Allen gains an animosity with Joslyn Jackam, a.k.a Weather With, with Joslyn playing a part in the key developments in Nora's character arc [[spoiler:before she is erased from existence by Eobard Thawne]].
* Allegra Garcia had her cousin Esperanza Garcia, a.k.a Ultraviolet.

* In the post-Crisis timeline, August Heart, a.k.a Godspeed, is the arch-nemesis to Bart Allen, Barry and Iris's future son and Nora's little brother. While Bart treats everything like a joke, Godspeed is the only foe capable of causing him to get serious, because of him [[spoiler:murdering Bart's mentor and HonoraryUncle, Jay Garrick, in front of him]].

* Kara Danvers has many enemies, but by virtue of being an AllLovingHero, she doesn't have the kind of personal hatred for her worst ones that Oliver and Barry have for theirs. However, she openly calls Leslie Willis, a.k.a Livewire, her nemesis, with Winn commenting that even mentioning Livewire's name causes Kara to get defensive. [[spoiler:Ironically, Livewire would end up performing a HeroicSacrifice to protect Kara from Reign.]] She eventually gains a true arch-foe once ComicBook/LexLuthor enters the picture, though Luthor treats his quarrel with Supergirl as merely RevengeByProxy, until she manages to turn his sister against him, among other humiliations, which turns Luthor's attention to destroying Kara for bruising his ego so much.

* Bishop becomes this to the later Legends, with his kidnapping of Sara dividing the team on what to do without her leadership, and the fact that he is technically Ava's father making things more personnel than with their other enemies. After Sara dies and he clones her into a new body, he appears to be KilledOffForReal, only to return with a vengeance by luring Constantine to his side by prying to his power lust, forcing the Legends to recruit his younger self to thwart his invasion plans. After Bishop is EatenAlive by Mick's alien children, the Legends wipe the young Bishop's memories to preserve the timeline, only for him to later regain them and plot revenge for the Legends denying him the chance to present his StartOfDarkness.

* The second Batwoman, Ryan Wilder, inherited the rivalry with Alice, but for different reasons; Alice's Wonderland Gang killed Ryan's adopted mother, and she projects her rage of the murder onto Alice for being their leader, despite Alice not having been involved in the crime. On her part, Alice sees Ryan as an annoyance at worst, trying instead to focus finding Kate than fighting Ryan.
* Luke Fox has Russell Tavaroff, the Crow agent who shot him during to a racially influence hold up, leaving Luke fighting for his life in a hospital bed, a fight he was losing until Mary and Ryan got him a miracle remedy. Upon his recovery, Luke's first act is to hunt Tavaroff down and make him pay until John Diggle talks him down. Once he suits up as Batwing, Tavaroff becomes his StarterVillain, though more by happenstance than Luke tracking him again.

** [[Characters/ArrowverseEobardThawne Eobard Thawne]], a.k.a the Man in the Yellow Suit, a.k.a the Reverse-Flash. Thawne murdered Barry's mom, framed his dad for it, and then manipulated Barry's life under the guise of "[[TeamDad Dr. Harrison Wells]]". He is Barry's most personal enemy, and their destinies are so intertwined that one cannot exist without the other, thus they will never be fully rid of one another -- a fact that only makes them hate each other more. Even when talking about his other hated enemies with his daughter Nora, Barry makes it clear to her that Thawne is the one he hates the most, [[spoiler: especially after Thawne manipulated Nora into saving him from his execution at Iron Heights in 2049, resulting in the version of Nora being RetGoned.]]

** Earth-2's Hunter Zolomon, a.k.a Zoom, who pulled the same trick as Thawne did by impersonating "Jay Garrick" (the Earth-3 counterpart to Barry's father, no less) and presenting himself as an ally all so he could steal Barry's speed to cure himself of Velocity poisoning. As Zoom, he beat the crap out of Barry several times, once breaking his back and humiliating him in front of all of Central City. Then there's what he did to the rest of Team Flash: he kidnapped Jesse Wells to blackmail Harry into helping him and betraying the rest of the team, kidnapped Wally to force Barry to give up his speed, and then kidnapped Caitlin to invoke StockholmSyndrome on her, traumatizing her and leaving her with PTSD. And, for the final finishing touch, he murdered Henry Allen ''in the very same spot where Eobard Thawne murdered Nora Allen'', right in front of Barry's eyes. After that, Barry wants him deader than dead and looked very ready to do the deed, inspiring a deep hatred in him that not even Thawne was capable of. While Barry ultimately didn't kill him (though he was very close to doing so), he did engineer the events that led to the time wraiths subjecting Zolomon to a FateWorseThanDeath.

* Joe West had the Mardon brothers. Clyde killed Joe's partner, and Joe eventually killed Clyde in defense of Barry. Unfortunately, Mark Mardon did not take the death of his little brother well, and goes gunning for Joe until Barry alters the timeline and Mark's vendetta goes unresolved.

* Abra Kadabra is this to Gypsy for killing her former lover among many other people. He also implies that he will one day become one for the Flash.
* In the post-Crisis timeline, August Heart, a.k.a Godspeed, is the arch-nemesis to Bart Allen, Barry and Iris's future son and Nora's little brother. While Bart treats everything like a joke, Godspeed is the only foe capable of causing him to get serious, because of him [[spoiler:murdering Jay Garrick, Bart's mentor and HonoraryUncle, in front of him]].

* The second Batwoman, Ryan Wilder, inherited the rivalry with Alice, but for different reasons; Alice's Wonderland Gang killed Ryan's adopted mother, and she projects her rage of the murder onto Alice for being their leader, despite Alice not having been involved in the crime.

* Jonah Hex has Quentin Turnbull.

!''Series/{{Arrowverse}}''

** Malcolm Merlyn, Oliver's first personal enemy, and the one who was most similar to him as an EvilCounterpart as a man who lost himself to the darkness; its a small wonder why Merlyn calls himself the "Dark Archer". Being responsible for sinking the ''Queen's Gambit'', and leaving Oliver stranded on Lian Yu for years, Malcolm plays a huge role in ruining Oliver's life and setting him on the path of becoming the vigilante he is today. In their rivalry, Merlyn has been responsible for the deaths of three important people in Oliver's life, and manipulating Thea against Oliver multiple times. Even after he and Oliver came to an EnemyMine against Ra's al Ghul, Merlyn ended up [[HeelFaceDoorSlam betraying Oliver to H.I.V.E.]] after he gets humiliated from being beaten in a League challenge, resulting in Oliver cutting off Merlyn's hand and stripping him of the title of Ra's al Ghul. Things are so personal that, during said duel, Malcolm makes it clear that the only way their feud will end is when one of them is dead. [[spoiler:Merlyn would ultimately perish on Lian Yu performing a HeroicSacrifice for Thea, but Oliver makes it clear he still hasn't and will never forgive him. While Chase has taken the top spot as of now, Malcolm is still clearly one of his most hated.]]
*** Oliver's adversial relationship with Malcolm is further complicated by the paternal slant added to it. Malcolm was the father of Oliver's best friend Tommy (and, as he later learned, his sister Thea), and prior to the death of Rebecca, acted like a favorite uncle or even a second father to him. Even after Malcolm grew cold, he still had some fatherly affection for Oliver, regarding him as a LikeASonToMe, and deeply regretted his "death". Ultimately, part of their animosity is driven by this facet of their relationship. In Malcolm, Oliver sees all the qualities he hates about himself, and it's implied Malcolm is partially resentful of the fact that, out of all three of the Queen/Merlyn progeny, the one most similar to him and also has the most potential is the one that does not share so much as an ounce of his blood.
** Slade Wilson, a.k.a ComicBook/{{Deathstroke}}, who served as a much more personal enemy, with the most crushing blow being [[spoiler:when he killed Oliver's mother in front of his eyes]]. At first friends, Slade was set on a [[ImplacableMan never-ending vendetta]] to ruin Oliver's life after being injected with the Mirakuru serum, since the serum causes him to blame Oliver for causing Shado's death. However, Oliver has more-or-less accepted the fact that what happened with Slade was partially his fault for not telling him the truth about Shado's death when he had the chance, and is happy to leave Slade imprisoned instead of killing him due to that and their formerly close relationship. [[spoiler:This decision leads to Slade working the Mirakuru out of his system, feeling remorse for his actions against Oliver and forming an alliance with him against Adrain Chase that reignites their old comradery.]]
*** It's also worth noting that Oliver and Slade are also part of a line of "Deathstrokes" and archers that share an animosity. Before them, it was Yao Fei and Billy Wintergreen, and after them it could be Connor Hawke and Grant Wilson in a possible future.
** To avenge his father's death at Oliver's hand, Adrian Chase, as Prometheus, terrorizes Star City and kills several innocent people, recruits people into turning against Oliver (such as having Black Siren impersonate her Earth-1 counterpart, Oliver's FirstLove), manipulates Oliver into killing Felicity's boyfriend, psychologically tortures him to the breaking point, and eventually forces Oliver to turn the city against his superhero identity, branding Green Arrow a criminal. Meanwhile, under the guise of a FalseFriend, Chase butters him up to gain his trust, aiding him as one of his closest confidants within his administration and even helping Diggle get out of military prison. Once the charade is broken, the two don't even try to hide how much they hate each other, making it very clear that their war will only end when one of them is dead. A deed completed with Adrian's attempted SadisticChoice of either Oliver killing him [[ThanatosGambit to set off bombs on Lian Yu]] where all of Oliver's loved ones are present or letting him kill Oliver's illegitimate son William, so when Oliver saves his son, Adrian shoots himself in the head. In fact, Oliver is even willing to [[EnemyMine ask for help]] from Malcolm and Slade, as he's that desperate to beat Chase, and by the time he made Lian Yu explode, killing Samantha, putting Thea in a coma, and leaving Diggle with a nerve disease, Chase has firmly taken the top spot on Oliver's most hated nemesis, even exceeding Merlyn, so much so that while Oliver did not kill Malcolm, when he had a vision of Chase, Oliver was more than willing to kill him.

** Nyssa, who dedicated her life to bringing Malcolm down after he killed Sara. When Malcolm becomes Ra's al Ghul, Nyssa did everything in her power to overthrow him, even destroying the Lazarus Pit to spite him. Eventually, Malcolm came to hate Nyssa too, willing to betray a truce between them when she had offered a cure for his daughter's life. In the "Doomworld" altered reality, the only thing Malcolm used the Spear of Destiny to do that did not benefit whatsoever was to banish Nyssa to a miserable, closeted life in Ohio.
** Even his own daughter, Thea, who he brainwashed into [[spoiler:killing Sara Lance]] in his gambit to end his debt to Ra's al Ghul, which also deepened Nyssa's hated for Merlyn, has it out for him. Thanks to his refusal to give up leadership of the League for her and handing Oliver's son William over to Damien Darhk, she appears to have rejected him and he appears to have gone full-blown villain. They do face off in combat, but he won't kill her.
* Floyd Lawton, a.k.a Deadshot, was this to John Diggle for killing his brother, Andy. However, His NobleDemon tendencies later endeared him to Diggle and they eventually came to an understanding that [[spoiler:leads Lawton to sacrifice his life to get Diggle home to his family. Ironically, Andy would become Diggle's foe after it was revealed he faked his death to join H.I.V.E., until, more ironically, Diggle himself would end up killing Andy.]]
* Detective Quentin Lance had Barton Mathis, the Dollmaker, a particularly brutal criminal he sealed away prior to the start of the series, who only escaped from prison during the Undertaking. The feeling was mutual as he captured Quentin and Laurel and attempted to kill Laurel in front of him, only failing because Sara turned up and killed Dollmaker.
* Damien Darhk is this to all of the Original Team Arrow for, amongst over crimes, threating Laurel to get Quentin to join H.I.V.E., ruining Oliver's mayoral campaign, crippling Felicity and leaving her paraplegic, kidnapping Oliver's illegitimate son William, and turning Diggle's brother against him. After he [[spoiler:kills Laurel purely out of spite]], it doesn't take long for all of Team Arrow to bitterly hate him and want him dead above all else.
** Darhk was also Ra's al Ghul's nemesis, having been his friend before they became rivals for the title of "The Demon's Head". While they havn't interacted in the proper sense, Ra's entire plan to destroy Star City was not only to ensure Oliver's ascension as his heir, but to kill Darhk as well.
* Next to her father, Thea's biggest enemy is Lonnie Machin, a.k.a Anarky, a criminal with a VillainousCrush on her.
* Felicity Smoak dubbed the Bug-Eyed Bandit, Brie Larvan, as her nemesis after she gives her a run for her money in hacking, and is also personally targeted by her when she decides to seek out the chip Felicity uses in her spine to regain the use of her legs when the criminal learns she will be crippled by surgery on a tumor in her spine. She also had a rocky relationship with her father, Noah Kuttler a.k.a the Calculator, [[spoiler: before his HeelFaceTurn]].
* Dinah Drake had Sean Sonus, for killing her cop partner and lover. She spent three years hunting him on a RoaringRampageOfRevenge, [[spoiler:until she killed him]], only to quickly gain another nemesis in the form of Laurel Lance's Earth-2 counterpart, Black Siren, [[spoiler:ironically for the same reason as Sonus]], until the two were able to bury the hatchet to honor Quentin Lance.
* Due to his machinations to create a criminal empire for himself, Ricardo Diaz quickly became the arch foe for Team Arrow as a whole, especially after he orchestrated events to get Oliver in jail, caused the team to briefly fracture from mistrust and poor communication, [[spoiler:murdered Quentin Lance]], and forced Oliver into the position of ousting his secret identity and surrendering to the FBI's custody. After he personally attempts to murder her and William to hurt Oliver, Felicity in particular grows to utterly despise Diaz, to the point that she tries to kill him while he was in police custody.

** [[Characters/ArrowverseEobardThawne Eobard Thawne]], a.k.a the Man in the Yellow Suit a.k.a the Reverse-Flash. Thawne murdered Barry's mom, framed his dad for it, and then manipulated Barry's life under the guise of "[[TeamDad Dr. Harrison Wells]]". He is Barry's most personal enemy, and their destinies are so intertwined that one cannot exist without the other, thus they will never be fully rid of one another -- a fact that only makes them hate each other more. Even when talking about his other hated enemies with Nora, Barry makes it clear to her that Thawne is the one he hates the most, [[spoiler: especially after Thawne manipulated Barry's future daughter, Nora, into saving him from his execution at Iron Heights in 2049, resulting in Nora being RetGoned until the Crisis on Infinite Earths restores her to the timeline.]] However, [[spoiler:in season 7 finale, Barry temporarily allies with Thawne to defeat Godspeed, who is too strong for each of them individually. Barry is smart enough to know that Thawne will turn on him the moment their alliance is over, but Thawne is shocked to learn that Barry has gotten ''much'' faster since their last encounter. Later on, during Season 8, Thawne tries to take away Barry's happiness completely by making himself the hero and Barry the villain and making all those Barry loved hate him and adore Thawne, but by this time around, Barry seems to no longer consider Thawne a threat. He is more than willing to let him die, sure, but he ends up saving him, even if he does so by taking his speed away, making it clear he is now content with leaving Thawne alive as long as he doesn't do anything bad]].

** Earth-2's Hunter Zolomon, a.k.a Zoom, who pulled the same trick as Thawne did by impersonating "Jay Garrick" (the Earth-3 counterpart to Barry's father, no less) and presenting himself as an ally all so he could steal Barry's speed to cure himself of Velocity poisoning. As Zoom, he beat the crap out of Barry several times, once breaking his back and humiliating him in front of all of Central City. Then there's what he did to the rest of Team Flash: he kidnapped Jesse Wells to blackmail Harry into helping him and betraying the rest of the team, kidnapped Wally to force Barry to give up his speed, and then kidnapped Caitlin to invoke StockholmSyndrome on her, traumatizing her and leaving her with PTSD. And, for the final finishing touch, he murdered Henry Allen ''in the very same spot where Eobard Thawne murdered Nora Allen'', right in front of Barry's eyes. Ironically, he actually had a similar childhood to Barry, in that he watched his mother be murdered too, the difference is that his father was ''guilty'' and not framed, and he grew up a bad person instead of a good one. After that, Barry wants him deader than dead and looked very ready to do the deed, inspiring a deep hatred in him that not even Thawne was capable of. While Barry ultimately didn't kill him (though he was very close to doing so), he did engineer the events that led to the time wraiths subjecting Zolomon to a FateWorseThanDeath.
** After Snart [[Series/LegendsOfTomorrow leaves with Rip Hunter]], Grodd takes his place as Barry's top non-speedster enemy, being a constant thorn in the Scarlet Speedster's side and his most dangerous non-ArcVillain enemy. By the time "Attack on Gorilla City" happens, Grodd has forgone all former attachments and his sole concern is getting revenge on Barry for exiling him to Earth-2 by any means necessary. Barry even contemplates killing Grodd to end his evolving threat, which Grodd even encourages him to do, seeing it as the only way to "end it". Eventually, [[spoiler:the events of ''Series/CrisisOnInfiniteEarths2019'' cause Grodd to have a HeelFaceTurn]].
** Clifford [=DeVoe=], a.k.a the Thinker, who was remembered as being among the Flash's biggest enemies by Abra Kadabra and the Reverse-Flash. In his quest to begin the Enlightenment, the Thinker subjected the Flash to defeat after defeat with his superior planning and intelligence, with the biggest blow being when he [[spoiler:framed Barry for murdering him, ruining his reputation as a CSI and sending him to Iron Heights Prison]]. Once it seems that he [[spoiler:appears to kill the Elongated Man after successfully killing all the other meta-humans he promised to protect]], Barry comes to regard [=DeVoe=] with a loathing that rivals that of his with Zoom and Thawne.

* In the post-Crisis timeline, Godspeed is the arch-nemesis to Bart Allen (AKA Impulse), Barry and Iris's future son and Nora's little brother. While Bart treats everything like a joke, Godspeed is the only foe capable of causing him to lose his shit. The reason for this is [[spoiler:Godspeed murdering Jay Garrick, Bart's HonoraryUncle, in front of him]]. However, the ending of season 7 seems to imply that this has been averted.

* Kara Danvers has many enemies, but by virtue of being an AllLovingHero, she doesn't have the kind of personal hatred for her worst ones that Oliver and Barry have for theirs. However, she openly calls Leslie Willis, a.k.a Livewire, her nemesis, with Winn commenting that even mentioning Livewire's name causes Kara to get defensive. [[spoiler:Ironically, Livewire would end up performing a HeroicSacrifice to protect Kara from Reign.]] She eventually gains a true arch-foe once ComicBook/LexLuthor enters the picture, though Luthor treats his quarrel with Supergirl as merely RevengeByProxy.
** Maxwell Lord, a CorruptCorporateExecutive who created the Bizarro Supergirl, was also a recurring menace to Supergirl in her early career, but hostilities between them decreased as time went by.
** Also, even tough they have only faced each other once so far, Rick Malverne is Supergirl's only enemy to truly get under her skin by kidnapping Alex and threating her life to make Supergirl his pawn, with her unable to find a way to counter his various contingencies.
* J'onn J'onzz views the entire White Martian race as this for their part in his kinds extinction, but he begins to lighten up to them after meeting M'gann M'orzz.
** He later gains a more traditional arch-enemy in the form of Manchester Black. Black really gets under J'onn's skin as he repeatedly rebuffs and mocks J'onn's outreaches to try and reform him — his (secondary) goal is to make J'onn angry enough that he'll forget his vow of peace and perhaps even kill him, [[spoiler:which he does after Black [[MoralEventHorizon tries to kill thousands of people by destroying the National City dam to flood the city]] and [[KickTheDog makes him relive his family's deaths]]]].
* Though both quarrels are entirely off-screen, both ComicBook/LexLuthor and General Zod are recognized as arch foes of ComicBook/{{Superman}} by the public of Earth-38.

* Lena Luthor has Morgan Edge. After Lena outbid him for Cat Co, Edge swore to crush her as a business rival. After multiple attempts to frame her for crime, and even an attempted murder, the feeling is more than mutual between them.
** Lena also has her own brother, Lex Luthor. Lex was manipulating Lena's research from the start and when he needed her to speed the process he has her boyfriend shot. He also leaves a note explaining it was all personal and he uses the notes he wrote of all of Lena's failures and shortcomings as a kid to taunt her.

* Vandal Savage is this to Hawkman, Hawkgirl, and Rip Hunter. He's been murdering the former two's various incarnations for thousands of years to maintain his immortality, and murdered the latter's wife and young son just for opposing him, [[spoiler:and to spite Rip after he lets slip that that is why he is hunting Savage throughout history.]]
* Damien Darhk becomes this to the Legends once they start identifying themselves as such. After a brief run in with him during their time with Rip Hunter, Darhk gets recruited into Eobard Thawne's LegionOfDoom to oppose the Legends until he is returned to his place in time, and is later resurrected from his death in ''Arrow'' to serve as a representative for the Cult of Mallus. Of the Legends, Darhk has the biggest animosity with their leader, Sara Lance, due to him murdering her sister in 2016. [[spoiler:Ironically, after seeing what Mallus plans for his daughter, Nora, Darhk joins forces with the Legends, even getting friendly with a few of them, and ultimately dies protecting his daughter.]]

** Malcolm Merlyn, Oliver's first personal enemy, and the one who was most similar to him as an EvilCounterpart as a man who lost himself to the darkness; its a small wonder why Merlyn calls himself the "Dark Archer". Being responsible for sinking the ''Queen's Gambit'', and leaving Oliver stranded on Lian Yu for years, Malcolm plays a huge role in ruining Oliver's life and setting him on the path of becoming the vigilante he is today. In their rivalry, Merlyn has been responsible for the deaths of three important people in Oliver's life, and manipulating Thea against Oliver multiple times. Even after he and Oliver came to an EnemyMine against Ra's al Ghul, Merlyn ended up [[HeelFaceDoorSlam betraying Oliver to H.I.V.E.]] after he gets humiliated from being beaten in a League challenge, resulting in Oliver cutting off Merlyn's hand and stripping him of the title of Ra's al Ghul. Things are so personal that, during said duel, Malcolm makes it clear that the only way their feud will end is when one of them is dead. [[spoiler:Merlyn would ultimately perish on Lian Yu performing a HeroicSacrifice for Thea.]] To add fuel to the fire, every time Oliver is required to think of an arch foe, Merlyn is always first on the list.

** To avenge his father's death at Oliver's hand, Adrian Chase, as Prometheus, terrorizes Star City and kills several innocent people, recruits people into turning against Oliver (such as having Black Siren impersonate her Earth-1 counterpart, Oliver's FirstLove), manipulates Oliver into killing Felicity's boyfriend, psychologically tortures him to the breaking point, and eventually forces Oliver to turn the city against his superhero identity, branding Green Arrow a criminal. Meanwhile, under the guise of a FalseFriend, Chase butters him up to gain his trust, aiding him as one of his closest confidants within his administration and even helping Diggle get out of military prison. Once the charade is broken, the two don't even try to hide how much they hate each other, making it very clear that their war will only end when one of them is dead. A deed completed with Adrian's attempted SadisticChoice of either Oliver killing him [[ThanatosGambit to set off bombs on Lian Yu]] where all of Oliver's loved ones are present or letting him kill Oliver's illegitimate son William, so when Oliver saves his son, Adrian shoots himself in the head (though it turned out the worst the resulting explosion did was kill William's mother Samantha, a person Oliver wasn't close to, while everyone else survived in spite of Diggle getting a nerve disease and Thea falling into a coma). In fact, Oliver is even willing to [[EnemyMine ask for help]] from Malcolm and Slade, as he's that desperate to beat Chase.

** [[Characters/ArrowverseEobardThawne Eobard Thawne]], a.k.a the Man in the Yellow Suit a.k.a the Reverse-Flash. Thawne murdered Barry's mom, framed his dad for it, and then manipulated Barry's life under the guise of "[[TeamDad Dr. Harrison Wells]]". He is Barry's most personal enemy, and their destinies are so intertwined that one cannot exist without the other, thus they will never be fully rid of one another -- a fact that only makes them hate each other more. Even when talking about his other hated enemies with Nora, Barry makes it clear to her that Thawne is the one he hates the most, [[spoiler: especially after Thawne manipulated Barry's future daughter, Nora, into saving him from his execution at Iron Heights in 2049, resulting in Nora being RetGoned until the Crisis on Infinite Earths restores her to the timeline.]] However, [[spoiler:in season 7 finale, Barry temporarily allies with Thawne to defeat Godspeed, who is too strong for each of them individually. Barry is smart enough to know that Thawne will turn on him the moment their alliance is over, but Thawne is shocked to learn that Barry has gotten ''much'' faster since their last encounter]].