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Simon Morrison
"I'm ten steps ahead of you, and you don't even know what game we're playing yet!"
"You're not a hero. You're a killer and I'm going to show you that. I'm going to show you how everything you touch dies."

Species: Human

Known Aliases: Prometheus, The Throwing Star Killer, Adrian Chase

Played By: Josh Segarra

Voiced By: Michael Dorn (uncredited)

Appearances: Arrow

A mysterious masked archer who makes his presence known just as Mayor Oliver Queen ramps ups his anti-crime efforts with the intent to thwart those efforts. He quickly reveals himself to have a personal fixation with Oliver and devotes all of his efforts into hurting him. He is first revealed to be the son of a past target of Oliver's crusade 4 years back and then it turns out that he has been hiding under Oliver's nose all along as the new District Attorney of Star City, Adrian Chase.

Hellbent on breaking Oliver, Prometheus stands out as the worst adversary the Emerald Archer has faced up to this point in his career.

see DCEU: Task Force X - Officials and Agents for the post-Crisis Earth-1 character who bears his fake name
see Arrowverse: Earth-2 page for his Earth-2 counterpart
see Arrowverse: Earth-X page for the Earth-X Prometheus

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  • Accuser of the Brethren: Since his actions in Season One, Oliver has been trying to atone, and works harder to avoid killing where he doesn't have to. Prometheus, however, is out to put Oliver to task for the killings he carried out four years prior, caring nothing for any efforts Oliver's been making to change.
  • Adaptational Name Change: None of the versions of Prometheus were named Simon Morrison. Additionally Adrian Chase was the name of an unrelated character in the comics while here it's an alias of Prometheus.
  • Adaptation Dye-Job: He's blonde in the comics. Here, he has dark brown hair.
  • Adaptation Origin Connection:
    • In the comics, Prometheus's origin had nothing to do with Green Arrow. While comics Prometheus was also on a vendetta against the "forces of justice" due to his parents getting murdered, it was not Green Arrow who killed his parents. Comics Prometheus also has a beef with superheroes in general, not one hero in particular. In addition, the hero that Prometheus is a dark mirror of is typically Batman rather than Green Arrow.
    • Furthermore, comics Prometheus had no connection with Talia al Ghul, never being trained by her or the League of Assassins.
  • Adaptational Sexuality: Played with. This version of Adrian is still married to Doris, but the comic Prometheus was implied to be homosexual, or at least pragmatically pansexual.
  • Adaptational Villainy: Adrian Chase is an Anti-Hero in the comics. Here, not so much. Then again, Adrian Chase isn't his real name to begin with.
  • Adaptational Wimp. Zig-zagged. This version of Prometheus doesn't have the advanced technology that allowed him to replicate the fighting skills of every superhero in the DC Universe and is unable to detect everyone's weaknesses, but he most definitely has enough skill to combat Green Arrow and his allies.
  • All for Nothing: Despite his smugness, his only real victory he ever had was killing Samantha Clayton, all of his other plans to make Oliver kill him and/or break him failed in the end.
  • Ambiguous Situation:
    • His lack of definitive reaction to Church telling him Oliver's identity raises the question of whether Prometheus already knew it. If nothing else, he seems to have already been aware that the Hood and the Green Arrow are one and the same. The revelation of his alliance with Talia makes it likely that she told him, but it remains unconfirmed. Considering his high intelligence, it's equally possible that Chase deduced Oliver's identity on his own.
    • As of "What We Leave Behind", Prometheus's identity has only been implied, and he himself has given no real clues. Team Arrow hypothesizes that he's the illegitimate son of Justin Claybourne, which is later proven true. His identity is revealed in bits and pieces over the course of Season Five; "Fighting Fire With Fire" reveals that he, not Vigilante, is Adrian Chase, while "Checkmate" confirms this identity to be a mere alias, with his real name being Simon Morrison.
    • In "Honor Thy Fathers", Chase appears to cross the Despair Event Horizon after being told of his father's intent to disown him and doesn't resist being defeated and arrested, but the events of the next two episodes — the last in the season — strongly suggest that he was intending to be captured, raising the question of whether or not the revelation had any impact on him at all.
  • Analogy Backfire: He claims that he calls himself "Prometheus" because his namesake took power from the gods for playing judge, jury, and executioner as Oliver did. The mythical Prometheus, however, took power from the gods in the name of helping humanity, something the villain consistently fails to do by murdering scores of people.
  • And Starring: In the series OBB.
  • Arch-Enemy: To Oliver Queen, who may very well be Oliver's most hated and personal enemy of all time. Their animosity began when Oliver killed Chase's father back in Season 1, leading Chase to dedicate the next 5 years of his life to Avenging the Villain and swearing to destroy Oliver in every way possible, to which he very nearly succeeds. The only other Big Bad to have had such a personal vendetta against Oliver is Slade, but unlike Slade who was once an ally, Prometheus is Oliver's sworn enemy straight from the get-go. Considering Oliver is willing to ally with Slade and Malcolm Merlyn if it means stopping Prometheus, an argument can be made that he is Oliver's worst enemy by far.
  • Artifact Alias: Once his identity is exposed, Prometheus has little if any use for the name "Adrian Chase", but everyone keeps calling him that, similar to Hunter Zolomon being incorrectly called "Jay Garrick" (at least until the real Jay is unmasked). Even people he has no reason to hide his identity from know him as "Adrian Chase". An inattentive viewer may not even realise that it isn't his real name.
  • Avenging the Villain: His father, Justin Claybourne, was a corrupt and cold-hearted man who cheerfully exploited the suffering of others to line his own pockets before being killed by the Hood. This doesn't stop Prometheus from seeking to avenge him (indeed, Claybourne's crimes don't seem to enter his son's thinking at all). His campaign against Oliver also indirectly helps his mentor, Talia, avenge her father, the noble but villainous Ra's. However, he learns that his father was going to disown him because he was ashamed of him, a fact that affects Chase in a certain way, but not enough to cease his crusade against Oliver.
  • Ax-Crazy: It's clear Prometheus is not a stable man, especially since he has a deranged obsession with the Hood right down to recreating his murder scenes to a T. This is later brought up in detail in "Honor Thy Fathers", where Prometheus learns from Oliver that his father, Justin Claybourne, was planning on disowning him due to him being mentally ill. It reaches its apex in "Lian Yu"; Simon intends to die and take everyone on Lian Yu, allies and enemies alike, with him, all just to settle his insane grudge against Oliver.
  • Badass in a Nice Suit: In his civilian identity, he is usually seen wearing a suit.
  • Badass Normal: The first Arrow Big Bad since Merlyn to have no out of the ordinary powers whatsoever. Yet he's able to go toe-to-toe with Oliver, who by this stage is a contender for World's Best Warrior. Prometheus is even able to cow the metahuman Black Siren into working for him.
  • Bad Boss: Prometheus has no problem with manhandling any minions that talk back to him or question his orders and, as shown in the season finale, he's also perfectly willing to blow Lian Yu up with the entirety of his forces still on the island so long as it wipes out almost everyone Oliver cares about.
  • The Bad Guys Are Cops: More law enforcement than a cop specifically, but he served as the district attourney for the majority of the season when he's the Big Bad.
  • Bastard Bastard: He's the illegitimate child of Justin Claybourne, a corrupt drugs exec who engineered a strain of tuberculosis as a bioweapon then inflated the cure at outrageous costs. Considering that Prometheus is killing innocent people left and right all to settle a grudge against Oliver, the apple didn't fall far from the tree.
  • Batman Gambit: He tells Oliver he's always ten steps ahead. He's not kidding. Prometheus has predicted and planned for Oliver's every move from the get-go, playing him like a chess piece straight into each of his traps.
  • Becoming the Mask: He claims that Oliver helped him discover who he really was, which is the Serial Killer known as Prometheus.
  • Big Bad: Of Season Five, particularly after he kills Tobias Church in the fifth episode and ramps up his plans to take on Green Arrow. Turns out he is actually in a Big Bad Duumvirate with Talia Al Ghul, though between the two of them, Prometheus is still The Heavy.
  • Big Bad Ensemble: In Season Five with Tobias Church, who wants to conquer the city, while Prometheus wants to destroy Green Arrow. After Prometheus kills Church, Vigilante becomes the other half of the Big Bad Ensemble, as he targets anyone whom he considers guilty, which eventually puts him at odds with Prometheus once he targets Oliver for his supposed corruption as Mayor.
  • Big Bad Friend: His civilian identity is district attorney Adrian Chase, and he maneuvered himself into becoming a good friend of Oliver Queen, when all along he was the one causing trouble throughout the city.
  • Bond Villain Stupidity: Subverted. While he wastes a lot of chances to kill Oliver in favour of tormenting him, the point is that he doesn't actually want to kill Oliver. Instead, he wants to break him to the point where he is forced to abandon his morals and kill Adrian.
  • Breakout Villain: He proved so popular that despite being Killed Off for Real at the end of Season 5, the writers have repeatedly found ways to bring him back post-mortem. In Crisis on Earth-X he had a (sort of) alternate universe counterpart of himself show up among the Nazi rank. Later Earth-1 Chase himself appeared as a Vertigo hallucination during Season 6 of Arrow to continue haunting Oliver. He also had a proper alternate universe counterpart (from Earth-2) appearing in Season 8, where he was that universe's version of Green Arrow.
  • Break the Badass: "Kapiushon" has Prometheus trying this on Oliver, and succeeding for a time. He later gets a taste of this himself in "Honor Thy Fathers" upon learning his father was planning on disowning him due to him being insane.
  • Break Them by Talking: "Kapiushon" focuses on Prometheus doing this on Oliver. He succeeds, though Oliver's friends are eventually able to help him heal.
  • Can't Kill You, Still Need You: In a very odd example. Prometheus doesn't really need Oliver alive per se, but he wants Oliver to remain alive so Prometheus can thoroughly break him and extend his suffering for as long as possible.
  • Cast as a Mask: When he wears his mask, Prometheus's deep voice is provided by Michael Dorn to hide his true identity, played by Josh Segarra.
  • Catchphrase: As Prometheus, he loves using the line "Everything you touch dies." towards Oliver.
  • Celebrity Paradox:
  • The Chessmaster: Few characters have shown the level of control that Prometheus has; he has orchestrated every bad thing in Oliver's life ever since he made himself known in Season Five. Oliver spends the season playing a deadly game of chess with him, but always on the losing side. By "Fighting Fire with Fire", he's managed to maneuver Oliver into declaring the Green Arrow a criminal. His manipulation is so powerful that even after his identity is revealed to the heroes, he can still walk around in broad daylight and talk with them, without them being able to do anything about it.
    Chase: I'm ten steps ahead of you, and you don't even know what game we're playing yet!
  • Choice of Two Weapons: Wields a sword and a set of throwing stars.
  • Chronic Backstabbing Disorder: He betrayed Oliver's trust in ways too many to count, betrayed his own wife by murdering her, betrays Black Siren by lying about sparing Quentin, and ultimately betrayed all of his allies by planning to let them die in his plan to destroy Lian Yu.
  • Cold-Blooded Torture: "Kapiushon" is essentially an entire episode of Prometheus enacting horrifying physical, psychological, and emotional tortures against Oliver.
  • Composite Character:
    • His character incorporates elements from Komodo and Simon Hurt; he's a masked evil archer like the former, but has the latter's obsession with destroying one particular hero. Furthermore, his real name is Simon Morrison, which is both the first name of Simon Hurt and Simon Lacroix (Komodo), while "Morrison" is a nod to his creator in the comics, Grant Morrison.
    • He's revealed to be Adrian Chase, who in the comics is the alter-ego of Vigilante. However, Vigilante himself is also present alongside Prometheus as a different character. It turns out that "Chase" is just an alias, though everyone keeps referring to him by that name.
    • Him being a former member of the League of Assassins and working for Talia al Ghul, who is the hidden mastermind, is a near cut-and-paste of Bane from The Dark Knight Rises.
  • Contrasting Sequel Antagonist: Prometheus has several stark contrasts to his predecessor Big Bads.
    • Aside from Malcolm Merlyn, Prometheus is the only main antagonist to be a Badass Normal, with Slade Wilson being enhanced by Mirakuru, Ra's al Ghul having supernatural longevity due to the Lazarus Pit, and Damien Darhk possessing powerful blood magic.
    • He's one of two main antagonists whose entire villainy is motivated by a personal vendetta against Oliver Queen, the other being Slade Wilson, but unlike Slade, Prometheus's beef with Oliver began during his days operating as a superhero. He's also the only antagonist with no intention of killing Oliver Queen, instead wanting to destroy his life so Oliver will wish he was dead.
    • He's unusual in the fact that Arrow doesn't usually play the season long "who's the villain under the mask?" guessing game that The Flash is really fond of, especially with the villain pretending to be the hero's friend to get closer to them (Brother Blood being the closest Arrow came to this).
    • In addition, Prometheus is the only main antagonist who isn't backed by an organization of loyal followers and extensive resources; Malcolm Merlyn led the Tempest, Slade Wilson was the true authority behind Sebastian Blood's Church of Blood, Ra's al Ghul was the head of the League of Assassins, while Damien Darhk was the leader of HIVE. Prometheus mainly operates alone, with his only allies being Evelyn, Talia, and anyone he can intimidate into helping.
    • However, the biggest contrast is that Prometheus is the only Big Bad to be an equal to Oliver in terms of fighting ability, as all of his predecessor antagonists had overwhelmed Oliver at some point, with Prometheus instead showing what makes him so dangerous is his brain.
  • Cool Mask: A black scarecrow-like facade that goes well with his psychotic crimes.
  • Cop Killer: Killed a lot of SCPD officers when he started to operate in Star City.
  • The Corrupter:
    • Was able to turn Evelyn again Oliver, although considering she already had her issues with Ollie, it didn't take much convincing on his part.
    • Oliver himself gets thoroughly broken by him, to the point where Oliver loses his will to carry on vigilante duty, and even pushes him to try morally questionable means such as hiring the Bratva to assassinate Chase.
  • Create Your Own Villain: It is Oliver's actions as The Hood in Season One that directly led to Prometheus's creation. His vendetta against Oliver was sparked by the death of his father, who was one of the names on the List.
  • Crusading Lawyer: Adrian Chase takes over from Laurel as an ace district attorney who can worm his way out of the hardest of cases.
  • Cut Lex Luthor a Check: With his legitimate skills as an attorney and ability to gather a lot of information to the point where only he has them, he could have legitimately put Oliver Queen (and by proxy, all of Team Arrow) behind bars for vigilantism, murder, theft, and several other crimes. He could even go the extra mile and take Team Flash and The Legends down along with Team Arrow if he wanted to but his vendetta against Oliver is so close-minded that he'd rather resort to vengeful and illegal means to torment him.
  • Dark Is Evil: Prometheus is a black-clad Evil Counterpart to Green Arrow, works primarily in low lighting, speaks with a modulated deep, sepulchral voice, and beneath his mask, has dark hair.
  • Dead Alternate Counterpart: For the Earth-2 Adrian Chase, though he's also dead by the end of his introduction.
  • Devil in Plain Sight: Once Oliver and the team discover who he really is under the mask, he continues walking about in broad daylight as the District Attorney, to constantly remind them that there's nothing they can do to expose him.
  • Didn't See That Coming: Adrian only had one real hiccup: a random shooter attacked City Hall. He hurts and kills several people. A bullet hits Chase in the shoulder and he nearly ends up in the second category. It might be the only time he used his Adrian Chase persona to actually help catch somebody and not to manipulate Oliver — clearly, he was unhappy his plan was nearly cut short.
  • Disproportionate Retribution: Oliver killed his corrupt father who he never personally knew. So Prometheus devotes his entire life to ruining Oliver's in every possible way. His dedication is so impressive that even when his primary motivation is undermined (his father never loved him and was going to disown him) he still sticks to his goals of making Oliver hit rock bottom.
  • The Dog Was the Mastermind: Prior to The Reveal two thirds of the way through the season, Adrian Chase is actually a fairly minor character (despite Josh Segarra receiving main cast billing) throughout the season; as the district attorney he is occasionally seen around Oliver's mayoral duties, but is presented as a minor recurring character with no obvious connection to Oliver's vigilante life or history or any of the other characters or plots that occur throughout the season (with the occasional exception, such as when helping Diggle deal with Walker or dealing with the active shooter at city hall).
  • The Dreaded: By Episode 5x05, Church is thoroughly terrified of him. With good reason, as Prometheus kills him at the end.
  • Driven to Suicide: After Oliver refuses to kill him one too many times, Prometheus takes matters into his own hands and blows his own brains out, to trigger the explosives set on Lian Yu.
  • Establishing Character Moment: Killing one of the few publicly non-corrupt cops while he was off duty and on his way home to his wife.
  • Even Evil Has Loved Ones:
    • Deconstructed Trope. Prometheus is doing all this out of revenge for his father being killed by the Hood, despite said father being an Asshole Victim who is later revealed to have wanted to disown his son for being a psychopath.
    • In his civilian disguise as Adrian Chase, he's also married, and while he kills his wife Doris when she tries to stop him from getting revenge on Oliver, he seems genuinely sad while blaming Oliver for "forcing" him to do it.
    • He also loves his mother, Amanda Westfield, and helps relocating her to get her away from Oliver.
  • Evil All Along: He initially appears as the hard-nosed, well-intentioned District Attorney of Star(ling) City, and even becomes a friend to Oliver. It's all an act.
  • Evil Chancellor: As the city's new DA, he's one of the mayor's top advisers and confidants outside of his own team.
  • Evil Counterpart: Prometheus serves as the exact antithesis to Green Arrow, even down to their physical costumes being a mirror image; he seems to be targeting anyone who might be successful in cleaning up Star City. He even recruits vigilantes to help him, like Evelyn. He even invokes the Hood since he chooses victims whose names are anagrams of people off the List, in contrast to the actual people on the List who more or less deserved to die. This extends to their civilian identities too, where he's a very high ranking member of Star City's government, much like Oliver. In addition, both he and Oliver were motivated to take up arms by the deaths of their fathers, both were trained by Talia al-Ghul. The key difference is Oliver strives to better than his father just as his father had wished, while for Prometheus it served as a Start of Darkness and he became far worse than his father ever was.
  • Evil Gloating: After Team Arrow uncovers his true identity, Prometheus just has to gloat about how well he's played them, how they can't stop him, and how he'll ruin Oliver's life.
    Chase: I'm ten steps ahead of you, and you don't even know what game we're playing yet!
  • Evil Sounds Deep: Like the Dark Archer and Brother Blood before him, he uses a voice modulator to hide his identity. And like Zoom, his masked alter-ego has a different actor voicing him.
  • Evil Sounds Raspy: His natural voice has a pretty sinister rasp, which becomes even more evident when he shouts.
  • Evil Twin: He mirrors Green Arrow so well, his Prometheus identity might as well be a shadow copy. A cop even mistook Prometheus for Green Arrow the first time he showed up.
  • Evil Wears Black: He wears an all-black version of Oliver's first outfit.
  • Evil Versus Evil: Prometheus conflicts with Tobias Church over the latter's desire to kill the Green Arrow, and later, he fights with Vigilante to keep him from killing Oliver and denying Prometheus his revenge.

  • False Friend: Adrian Chase has apparently been a friend and ally to Oliver since his debut. As it turns out, he's been conspiring to ruin Oliver's life all along.
  • Faux Affably Evil: His public persona is a hard-nosed but well-meaning friend to Oliver, hiding the vengeful, deranged psychopath he truly is. After The Reveal, he acts creepily chummy to Oliver even when torturing him.
  • From Nobody to Nightmare: He spent the past four years training to be good enough to beat Oliver and that includes spending time being trained by Oliver's last mentor before he came back to Starling City — Talia Al-Ghul.
  • Genius Bruiser: He's a very capable fighter, and, as his campaign against the Green Arrow demonstrates, he has quite a mind for psychological warfare and long-term planning.
  • Godzilla Threshold: Prometheus manages to force Oliver to this position by being so much of a threat that Oliver is forced to turn to Malcolm Merlyn and Slade Wilson for help to finally take him down.
  • Guile Hero: In "Who Are You?", he is able to show off just how clever a District Attorney he is, where he uses a Loophole Abuse to get him and John Diggle out of hot water and keep the latter away from General Walker's custody, who was out to execute him. Eventually it gets subverted with the reveal that he's Prometheus and is actually a Manipulative Bastard.
  • The Heavy: While it's revealed Talia Al-Ghul trained him and is the other mastermind behind Season Five, Prometheus is still the main threat that Team Arrow has to deal with.
  • He Cleans Up Nicely: While posing as DA Adrian Chase, he shows that he can wear a rather nice suit when not dressed in his armory.
  • Hero Killer:
    • While he didn't, and doesn't want to, kill Oliver, Prometheus does what no one else ever did: He breaks Oliver's spirit so completely that he wants to stop being the Green Arrow. Oliver eventually recovers, but it's still a level of damage that no one else has managed to date.
    • His actions in "Lian Yu", while they failed to kill any of the main cast, still caused major, lasting damage to Team Arrow, leaving John with potentially crippling nerve damage, as well as nearly killing Thea and leaving her comatose.
  • Hunter of His Own Kind: Subverted Trope. He's killed several SCPD officers, and was believed by Team Arrow to be a member of the force as he had access to their files/evidence lock-up. As it turns out, he's not actually an SCPD officer, but he did have access to their facilities through his DA position.
  • Hypocrite:
    • A really deranged example, seeing as he hates Oliver for his actions as the Hood in Season One, yet has no problem killing scores of people to get back at him. It gets more deranged when it's revealed he's the hard-nosed District Attorney Adrian Chase, real name Simon Morrison.
    • Throughout "Kapiushon", while he does make a few semi-valid points, Prometheus ultimately isn't accusing Oliver of anything that he himself isn't also guilty of. Most galling is when he accuses Oliver of using his father's death to "justify a killing spree", which is exactly what Prometheus has been doing since he first appeared.
      • Particularly hypocritical when he claims that Oliver just kills because he enjoys it, when Prometheus has killed innocent people en masse just to draw Oliver out when Oliver has never killed anyone if they weren't either a known criminal or already trying to kill him.
    • Despite his entire crusade being built around taking revenge for the murder of his father, Prometheus has no qualms about threatening Oliver's son to torment him.
    • In "Disbanded", he calls Oliver an unpredictable, savage animal, who loves murder. The episode ends with him brutalizing one of his guards with a pen, then driving off into the night with blood on his face, all while whistling a cheerful tune. Projecting much, creep?
    • Throughout Season Five, Prometheus repeatedly claims that everything Oliver touches dies. By the end of the season, he's killed his own wife and proved perfectly willing to kill every one of his own allies as part of his plan to ruin Oliver.
  • I Have Many Names: Prometheus, The Throwing Star Killer, Adrian Chase, Simon Morrison...they're all the same person. Additionally, each of his parents have their own surnames separate from his: Justin Claybourne and Amanda Westfield.note 
  • I Lied: Despite promising Black Siren otherwise, Prometheus intends to let Quentin die with everyone else (including Black Siren herself) when he destroys Lian Yu.
  • Improbable Aiming Skills: He managed to use a throwing star to not just deflect, but destroy one of Oliver's arrows in mid-air.
  • In Name Only: The creators specifically emphasized that this Prometheus would be an original character. They weren't kidding. He heavily diverges from his comics counterpart in appearance, where he wore a yellow and purple suit of armor rather than a black version of Green Arrow's suit. He was also a dark mirror of Batman rather than Green Arrow. Furthermore, in Arrow, his goals are focused on a vendetta against one single hero who he is Avenging the Villain for, rather than being opposed to superheroes in general.
  • Invincible Villain: Played with; unlike previous Arrow Big Bads, Prometheus is on more-or-less equal footing with Oliver, and only wins in their first fight due to luck. Even his more outlandish feats (such as massacring an entire police unit single-handedly) aren't too far off from what Oliver himself has pulled. However, what he lacks in physical ability, he more than makes up for with his unparalleled strategic smarts. True to his word, Prometheus is always "ten steps ahead", being able to anticipate Oliver's every move, and strings him along like a puppet into every one of his traps.
  • Ironic Nickname: He chose the alias "Prometheus" because he saw the mythological figure as someone who stood up to self-righteous gods (with whom he equates Green Arrow). He either disregards or doesn't realise that the original Prometheus was a champion of mankind who defied the gods to share their power with humanity, while this Prometheus is a remorseless murderer who targets innocent people to settle a grudge he has against a single man.
  • Irony:
    • Despite being considered Oliver's worst enemy, he actually dealt the least permanent and/or lasting damage to him than any other villain. The only real win he has on him is the deaths of Samantha Clayton and Malcolm Merlyn - while Samantha's death does traumatize William and isolate him from Oliver for a while, Malcolm died on his own terms. His other attempts fail miserably or are completely undone. Meanwhile, the other main villains successfully kill some of Oliver's allies and/or leave a mark or legacy that haunts Oliver Queen.
      • His endgame actually helps Team Arrow more than it hurts them; aside from Samantha's death, Diggle's shoulder injury, and Thea being comatose for a few months, Chase's Dead Man's Switch kills Evelyn, Merlyn blows himself up while taking Harkness with him, Talia is so injured she successfully gets arrested and removed from the board entirely, Slade successfully redeems himself and goes free, and Black Siren being left for dead is one of the catalysts for her later Heel–Face Turn.
    • In the comics, Prometheus is notorious for being the person to completely destroy Star City, truly earning his title as one of Oliver's worse enemies. Here, Prometheus is actually the first antagonist whose primary goal is not to destroy Star City.
  • Irrational Hatred: While Oliver killing his father is an understandable enough reason for wanting revenge, the sheer lengths he is willing to go to completely ruin Oliver's life can be described as nothing short of absolutely crazy.
  • It's All About Me: In the end, nothing matters more to Prometheus than his grudge against Oliver. In "Checkmate", he murders his own wife when she tries to convince him to stop, although he's clearly affected by doing so.
  • It's Personal:
    • Everyone he kills in his first few episodes (barring Church and the police escort) is an anagram of somebody the Hood crossed off the List in Season One. It turns out that Oliver killed Prometheus's father, who was a Corrupt Corporate Executive responsible for releasing a weaponised strain of tuberculosis on innocent people. It becomes even more personal on Chase's end when Oliver brings in his wife Doris to try and convince Chase to turn himself in. This results in Chase killing his wife, blaming Oliver, and redoubling his efforts to destroy him. Few if any villains have ever hated Oliver as much as Prometheus does.
    • As Prometheus's crimes pile up, the animosity becomes extremely personal on Oliver's end as well. By the end of Season Five, Oliver is willing to team up with previous arch-enemies Malcolm Merlyn and Slade Wilson for the sake of bringing Prometheus down.
  • Jerkass: Even for a deranged serial killer, Prometheus is a harsh, brutal man to his own allies. The only exceptions seem to be his wife (whom he ends up killing anyway) and Talia (his Evil Mentor, whom he betrays and leaves to die at the end of Season Five).
  • Kick the Dog: Repeatedly throughout Season Five.
    • He murders various innocent people whose names happen to be anagrams of names on Oliver's List from Season One, all just to screw with Oliver's head.
    • He kidnaps Billy Malone, dresses him in a copy of Prometheus's own costume, and sets him up to be killed by Oliver.
    • He breaks Black Siren out of the Pipeline and has her pretend to be Earth-1's Laurel Back from the Dead to psychologically torture Team Arrow. That this comes on the heels of his aforementioned kidnapping and indirect murder of Billy just adds to Prometheus's cruelty.
    • Spends the entirety of "Kapiushon" brutally torturing Oliver, trying to break his spirit. Special mention goes to him staging a scenario where he appears to murder Evelyn right in front of Oliver, again, just to mess with his head.
    • His final act in life is a single, horrible act of cruelty; he commits suicide to trigger the Dead Man's Switch that sets off a series of explosives that ravage Lian Yu with Oliver's friends (and all of Chase's own allies) on it, all just to cause Oliver one last dose of pain.
  • Kick the Morality Pet: He murders his own wife when she tries to convince him to turn himself in.
  • Kill the Ones You Love: He did sincerely love his wife, but not enough to let go of his crusade against Oliver. To keep her from testifying against him, he is then forced to murder her.
  • Knight of Cerebus: Season Five was dark to begin with and this show has had villains that have caused the show to become darker once they have appeared, but Prometheus brings with him the kind of darkness that's enough to send the people of Star City into a frenzy once word of his crimes is made known. It only gets worse as the season goes on, especially when his identity is revealed. "Kapiushon", possibly the series' darkest episode to date, is focused around Prometheus's efforts to break Oliver's spirit, which he succeeds in doing. His actions in the season finale make things darker still; no other villain has gone so far as to threaten to kill Oliver's son right in front of him, or to kill himself and wipe out his own allies just to kill Oliver's team for the sake of making him suffer. Prometheus might just be Arrow's darkest villain yet.
  • Lack of Empathy: Prometheus places no value on innocent life, killing at will for the sake of making Oliver suffer. As the season wears on, it becomes very clear that he might be the most depraved villain on the show thus far. Even Damien Darhk, arguably the most immoral of the previous major villains, did not take as much delight in killing and torturing people as Prometheus does, and even then he always had a clear reason for his murders where Prometheus resorts to mass death just to make a 'point'.
  • Leitmotif: His theme music sounds like a creepy ticking clock or something from a carnival.
  • Let's Fight Like Gentlemen: Prometheus of all people invokes this when he and Oliver confront each other in a building. Oliver throws aside his bow, while Prometheus drops his sword, and the two of them proceed to brawl all over the building with Good Old Fisticuffs.
  • Loophole Abuse: Since there was no other way, he made John Diggle hit him so he would have a reason to prosecute him and thus keep him away from General Walker, who would have killed him.

  • Malevolent Masked Men: His mask is very similar to Scarecrow's, deliberately designed to inspire fear.
  • Manipulative Bastard: Part of his planned revenge against Oliver is to turn his friends against him and convince Oliver that everything he touches dies. Prometheus first displays his impressive manipulative ability by tricking Oliver into accidentally killing Billy Malone, calculating Oliver's every move so that Oliver shot down Billy wearing Prometheus's suit. Then it's revealed this is only the beginning, with Prometheus showing just how much he knows about everyone Oliver has ever encountered, even the heroes from other shows, knowing about the existence of Earth-2 Black Siren trapped in Central City, as well as Sara Lance traveling with the Legends. He's able to use all this information to stage Laurel's return to life, when it was actually her evil Earth-2 counterpart. It's only when his identity as Adrian Chase is revealed that people do realize how truly manipulative he is — he's infiltrated every part of Oliver's life and played everyone like puppets on strings.
  • Mask of Sanity: He's very skilled in hiding his real nature, always keeping a calm and cold demeanor on his face. Underneath it, he's very unhinged and psychotic, killing in cold blood without a second's hesitation and clearly enjoying it.
  • Master Actor: No one, not even his own wife, ever suspected that "Adrian Chase" was Prometheus until it was too late.
  • The Mentally Disturbed: Even as a younger man, he was psychologically unbalanced, which led to his father wanting to disown him. Oliver killing his father didn't create Prometheus's insanity; it just let him focus it.
  • Mind Rape: Everything he does to Oliver is designed to psychologically torture him. It's most evident in "Kapiushon", where he combines extensive physical, mental, and emotional torture to break his spirit.
  • Mirror Match: As a dark mirror of the Green Arrow, battles with Prometheus are very even.
  • Moral Myopia:
    • He's out to avenge his father, who was a Corrupt Corporate Executive responsible for the suffering and deaths of many innocent people. Furthermore, he seems to consider murdering innocent people a perfectly acceptable way of getting back at Oliver, not caring in the slightest that those people might have had families of their own.
    • Judging from his speeches in "Kapiushon", Prometheus seems to genuinely believe that he has the moral high ground in his conflict with Oliver. Even when Oliver admits that he enjoys killing (though it's debatable, to say the least, if he actually does), he's not confessing to anything that doesn't equally apply to Prometheus. This comes up in "Missing", as well; Chase believes that he's perfectly justified in dragging Oliver's son into their feud because Oliver did the same with Chase's wife. He ignores that Oliver only brought his wife into the situation to try and talk Chase into ending his crusade (which Chase rejected by killing her), while Chase kidnapped William as just another way to hurt Oliver.
    • He condemns Oliver for killing criminals, remarking that they had families. What doesn't seem to occur to Prometheus is that the innocent people he's killed to torment Oliver, the police officers he's murdered, and even Oliver himself also have families.
  • Movie Superheroes Wear Black: Goes from purple armor to a completely black suit similar to that worn by Green Arrow.
  • Mysterious Past: What initially makes Prometheus so scary is nothing is known about him. Who is he? Why does he have such an obsession with Green Arrow/Oliver Queen? Where did he learn how to fight? Team Arrow spends the vast majority of the season figuring him out while at the same time trying to put a stop to him.
  • Mythology Gag: His real name, Simon Morrison, is a mix of Grant Morrison (who created the comics version of Prometheus) and Simon Hurt (another Batman villain created by Morrison).
  • Named by the Adaptation: In the comics, the main Prometheus's real name went unrevealed. In the series, his true name is eventually revealed to be Simon Morrison, with Adrian Chase as an alias he adopted.
  • Never My Fault: He killed his wife when she learned about his secret life and pleaded for him to give up his revenge. He then blames Oliver for it, due to trying to use her to stop him. He even considers it ample reason to kidnap Oliver's son to use against him.
    Oliver: That's my boy. He's an innocent.
    Chase: So was my wife, man.
  • Not Afraid to Die: His own life matters to him as much as the lives of all the innocent people he murdered, meaning nothing at all. In fact, his main objective is getting Oliver to kill him solely to prove a point. In the Season 5 finale, he blows his own brains out without a second thought after everything else failed.
  • Not So Similar: For all their similarities, there is one major difference between him and Oliver. When Oliver realized how far he was falling, he pulled back, or at least tried to. When Adrian realized how far he was falling, he went all in and discarded whatever humanity he had left. This is because Oliver didn't choose to become a killer and torturer — it was the unfortunate result of his struggle to survive. Adrian, however, made a conscious choice to become what he was to avenge his father. Hence, Oliver still has his morality and clings to it like a lifeline, while whatever morality Adrian had before his father died, he has long since gotten ditched.
  • Nothing Is Scarier: Team Arrow's theories aside (and even those are unconfirmed), nothing is really known about Prometheus, but he may have already known Oliver's identity before Church told him. Aside from that, he has knowledge he really shouldn't have access to: he knew about Black Siren being locked up in the S.T.A.R. Labs Pipeline and was able to free her without Team Flash noticing, and knows enough about Sara, the Legends, and time travel to make up a plausible story for "Laurel"'s return. All of this raises some terrifying questions about him. Even with his true identity revealed, Prometheus's vast knowledge of Oliver's allies has yet to be explained.
    • With the reveal that Talia Al-Ghul is his mentor and ally, Fridge Brilliance may just set in: Talia has known of Sara and the Legends ever since she was a child. Also, she's in charge of her own splinter faction of assassins, and intelligence-gathering is part-and-parcel of the assassin trade. It's not a stretch to imagine she has agents in Central City who witnessed Black Siren's initial rampage.
  • Obviously Evil: He dresses in a darker version of the Green Arrow's costume, wears a terrifying mask, and has a deep, evil voice. Conversely, however, his name ironically evokes a figure from Classical Mythology who was a champion of mankind after betraying the gods.
  • The One Guy: He's the only male out of the main villains in the Season Five finale. Subverted when it's revealed that Digger Harkness had teamed up with Prometheus, then double subverted when Harkness is killed shortly after, leaving Prometheus as the sole male once again.
  • One-Man Army: He effortlessly slaughtered a squadron of armed policemen who were escorting Tobias Church to Iron Heights.
  • The Only One Allowed to Defeat You: He seemingly wants to kill Green Arrow, and beats Tobias Church to a pulp (and later offs him) for almost beating him to it. Later it's clarified he doesn't want to kill Green Arrow; he just wants to destroy his life so he'll wish he was dead. He even goes so far as to protect Oliver from Vigilante to make sure that he alone can take revenge on Oliver.
    Prometheus: Oliver Queen is mine!
  • O.O.C. Is Serious Business: Normally, Prometheus is able to keep his hatred in check whenever he and Oliver confront each other, being able to cooly taunt him without a hint of anger in his voice. It's how he was able to keep up being Oliver's False Friend for so long. However, when Oliver brings in Prometheus's wife to try and convince him to stop, causing Prometheus to kill her to keep his vendetta, we finally see his rage consume him. In the following fight, Prometheus doesn't bother with taunts or any verbal warfare — he drops his blade in return for Oliver dropping his bow, and the two proceed to brawl all over the building.
  • Ornamental Weapon: He carries a bow and a quiver, but rarely uses them. They seem to mostly be there to complete his Evil Counterpart image.
  • Pay Evil unto Evil:
    • Murdering Tobias Church, a murderous drug dealer and unrepentant criminal. He didn't have any kind of altruistic motive, but no one's about to feel sorry for Church.
    • Leaving his team to die on Lian Yu in the Season Five finale. As cruel an act as it may be, it's hard to sympathize with the victims of Prometheus's treachery (Talia, who helped set Prometheus's rampage in motion; Evelyn, who double-crossed Oliver and Team Arrow with zero remorse; and Black Siren, who followed Prometheus's sadistic Dead Person Impersonation game).
  • Posthumous Character: In Season Six, he returns via a Vertigo induced hallucination to continue menacing Oliver.
  • Practically Joker: All in all, this guy is pretty much the Joker without the clown gimmick. He takes a lot of queues from the Clown Prince of Crime, being the psychotic Arch-Enemy and Evil Counterpart of The Hero who is a Batman analogue. He is deeply obsessed with ruining the hero's life, being completely depraved of humanity and dedicates his entire life to his cause, and the hero had a hand in creating them to begin with. This becomes even more apparent in Season Six where he returns as a Vertigo induced hallucination to haunt Oliver, very much like Joker did to Batman in Batman: Arkham Knight, establishing himself as the one enemy Oliver can never be truly rid of.
  • Pragmatic Adaptation: The purple suit of armor he usually wears got ousted in favor for a black archer outfit.
  • Redemption Rejection: Oliver is still willing to reach to Adrian to help him despite all of his crimes... until Adrian makes it clear just how insane he is by killing his wife as she is trying to talk him down. From that point on Oliver makes no presumptions that he will ever be able to peacefully stop him.
  • Red Herring: Initially strongly hinted to be Vigilante, like his comic book counterpart.
  • Refuge in Audacity: In the episode "Checkmate," after Team Arrow finally finds out that Adrian is really Prometheus, he has no qualms walking around in broad daylight and taunting Oliver, Quentin, Rene, and Susan Williams out in the open about how he's going to make life hell for them.
    • He offers Oliver a knife to stab him with. They're right in the middle of City Hall, in broad daylight, Oliver is the Mayor, and Adrian is the District Attorney. Oliver once tried to kill Slade Wilson with an ice pick in the middle of his own home while his mother was still in the house, completely under the impression that Slade was nothing more than a concerned citizen and potential benefactor, and even he found what Chase was suggesting absurd.
  • The Reveal: Eventually, it's revealed that he's the illegitimate son of Justin Claybourne (one of the Hood's victims from Season One), and that his true identity is District Attorney Adrian Chase (real name Simon Morrison). He was trained by Oliver's old mentor, Talia al Ghul, to get revenge for his father's death.
  • Revenge Before Reason: The revelation that his father never cared about him and sought to disown him does absolutely nothing to dissuade Prometheus from continuing his campaign against Oliver. In addition, his desire for revenge against Oliver over the death of his wife disregards the fact that Chase himself killed her.
  • Rogues' Gallery Transplant: In the comics Prometheus is a Justice League villain with a grudge against Batman in particular. While he has clashed with Green Arrow before, it was never this degree of personal. This Prometheus is Oliver's arch-enemy and evil counterpart, supplanting Merlyn in this regard.
  • Sadist: As demonstrated by his seemingly endless Evil Gloating after his identity has been revealed, Prometheus is revelling in destroying Oliver's life. He even dies perfectly content with the knowledge that the results of his suicide will cause Oliver even more anguish.
  • Scarily Competent Tracker: One of many reasons that Prometheus is such a dangerous person is, with enough time, he can find out dirt on anyone and everyone he puts his resources into. When Oliver confronts Talia Al-Ghul about training him she admits that Prometheus had already figured out a great deal about Oliver before she even told him about Oliver and trained him. Prometheus is also able to find William's location when even Oliver and Felicity couldn't find him.
  • Self-Disposing Villain: After Oliver refuses to kill him for the last time, Prometheus simply blows his own brains out.
  • Serial Killer: He's killed a number of people all for the reason of getting to Oliver.
  • Slasher Smile: The cloth of his mask is shaped into a rather wide grin.
  • Sliding Scale of Villain Threat: He is the first villain to actually subvert this. While he has the edge over Oliver psychologically and strategically, physically he is probably the least threatening Big Bad thus far on the show. The only villains he could possibly beat are Malcolm Merlyn and Mirakuru-less!Slade. Against Ra's al Ghul, Damien Darhk, and Mirakuru!Slade, he would almost assuredly lose. That being said, he is still skilled enough to keep up with Oliver and give him a close fight, which is no small feat.
  • Smug Smiler: After his identity is exposed, a great deal of Prometheus's Evil Gloating is accompanied by a smug grin and even smugger tone of voice. And unfortunately Prometheus can live up to those boasts.
  • Smug Snake: Boasts that he's ten steps ahead of Arrow... This just shows how arrogant he is, and he thinks he will win. When he loses, he acts like a sore loser.
  • The Sociopath: He couldn't care less about all the lives caught in the crossfire of his war with Green Arrow, whether they're innocent civilians or his own loyalists. He even murders his own wife, perhaps the only other person besides his mother that he genuinely cares about, when she tries to convince him to stop. The Season Five finale takes this even further; Prometheus uses his own death as just one more way to make Oliver suffer by using a Dead Man's Switch to seemingly kill nearly all of the people Oliver loves. He also shows himself, throughout the season, to be a vicious, sadistic, self-important murderer without a shred of empathy or remorse, and who refuses to take responsibility for his own crimes. He even seems to consider himself better than Oliver, despite being guilty of pretty much every crime Oliver's ever committed and more.
  • Sore Loser: In the Season Five finale, he's lost in every way that matters — he failed to get Oliver to kill him, and has to watch as Oliver is a better father to his own son than Adrian's own father was to him. So his last action is to kill himself, setting off the deadman switch that activates all the bombs on Lian Yu in a slightly failed attempt to kill Oliver's loved ones and his own team, just as one final finger to his worst enemy.
  • Spiteful Suicide: In the Season Five finale, Chase holds Oliver’s son hostage, while he himself is tied to a Dead Man's Switch that is rigged to cause the island (which Oliver’s friends are on) to blow up if he dies. He forces Oliver to make a Sadistic Choice, save his son by killing Chase which will cause his friends to die, or let Chase kill his son and save his friends. Oliver tries to Take a Third Option and knock Chase aside. Chase does not accept this and proceeds to shoot himself in the head to set off the explosions to spite Oliver one final time
  • Stalker Without A Crush: He's obsessed with the Hood/Green Arrow. His victims are chosen because they are anagrams from the List and his throwing stars are Oliver's old arrow heads stolen from SCPD evidence. In "Who Are You" we find out that this applies to every hero in the Arrowverse. Not only did he break into Team Flash's Pipeline to free Black Siren, but he also knows that Sara was resurrected by Laurel and is traveling in time with the Legends. How he knows all this has yet to be explained, but it makes his character even more terrifying. As he tells Oliver after torturing him, "I know him better than he knows himself."
  • Stealth Hi/Bye: Can do these much like Oliver can, though Prometheus is usually accompanied by flickering lights.
  • Strike Me Down with All of Your Hatred!: In "Lian Yu", his plan was to force Oliver to kill him to establish once and for all that Oliver is the savage killer that Chase considers him to be. His other motive for this was to set off a Dead Man's Switch that would trigger explosives all over Lian Yu to raze the island and kill everyone on it. When Oliver refuses to kill him, however, Chase just blows his own brains out to achieve the same result.
  • Strong as They Need to Be: He whipped an entire squad of armed policemen in "Human Target", yet Artemis was able to get a good shot in the subsequent episode, which may have been because he let her because she was his ally. Still played straight on other occasions though, like when Curtis was actually able to give him a fight.
  • Superhero Movie Villains Die: Given the intensity of his hatred with Oliver, it was clear that their war would never end until one of them had died. Other than Ra's al-Ghul, he's the first Arrow Big Bad who dies in his debut season with a death that sticks, as Merlyn faked his death while Darhk was revived.
  • Suspiciously Similar Substitute: Prometheus seems to take a few cues from Sebastian Blood. Both of them are villains who utilize an alternate identity to gather a team of followers to move against Oliver, both have their voices heavily modulated, both utilize decoys, and their public personas had a working relationship with Oliver. Both Blood and Chase were even The Dragon for figures more powerful than them. However, while Blood didn't have any personal vendetta against Oliver until he started working against the Blood Cult, was somewhat of a Non-Action Big Bad and was a Well-Intentioned Extremist to boot, Prometheus actively tries to represent Oliver's past sins, and can go toe-to-toe with Oliver. Also, while Blood died with a clean conscience knowing he'd helped in the efforts against Slade, Chase died thinking that he'd taken everything from Oliver.

  • Taking You with Me: Through a combination of a Dead Man's Switch and a Thanatos Gambit, this was Chase's plan for the Season Five finale; either Oliver kills him (proving Chase right) and sets off the explosives that will destroy Lian Yu, or Chase kills himself, which will have the same result. He opts for the latter in the end, shooting himself in front of Oliver, who is helpless to prevent the island's destruction.
  • Team Killer: As part of his Taking You with Me plan in "Lian Yu", he was willing to, and may have succeeded in killing his own team in the attempt to kill Oliver's.
  • Thanatos Gambit: He is willing to kill himself, just to deliver one final "screw you" to Oliver. See Xanatos Gambit for more details.
  • That Man Is Dead: Implied; he seems to have completely forsaken the use of his birth name, Simon Morrison, explicitly thanking Oliver for helping him to discover his true self as the murderous Prometheus.
  • They Look Just Like Everyone Else!: Underneath his mask, Prometheus looks just like a normal person who'd blend in with the rest of society.
  • To the Pain: Prometheus has no intentions of killing Oliver; he wants him to suffer to the point of wishing he was dead.
  • Troll: After his true nature is exposed, Prometheus takes endless pleasure in taunting others, especially Oliver.
  • Two First Names: Per the DC Comics norm, but only on his "Adrian Chase" alias.
  • The Unfettered: He has no rules, limits, or standards. In his crusade of torment against Oliver, absolutely nothing is off the table for him, regardless of how cruel, spiteful, or destructive to others it is. He even intended his own death, either at Oliver's hand or by suicide, to be one more method of hurting Oliver via a Dead Man's Switch and the mass murder of Oliver's friends and his own loyal allies.
  • Ungrateful Bastard: All of his allies, including Talia (his mentor), Evelyn (his loyal mole), and Black Siren (who placed considerable trust in him), were left to die when he destroyed Lian Yu at the end of Season Five.
  • Villain Has a Point: Downplayed. Prometheus is the last person who should be making that argument, but he isn't wrong when he points out that the criminals Oliver's killed were people with friends and families of their own. The "truth" that he wants Oliver to admit (that deep down, he enjoys killing) is just as hypocritical, and it's arguable that Oliver doesn't actually enjoy killing — he just thinks he does.
  • Villain with Good Publicity:
    • In his civilian identity he's the city's District Attorney. Even after Team Arrow finds out, they cannot expose him without him exposing them in return, or releasing his grip on whatever Dead Man's Switch he has on him at the time, including hostages he's abducted like Susan or later Oliver himself.
    • Finally no longer the case as of the end of "Disbanded", when thanks to the efforts of Felicity, Curtis, and Helix, a video of Prometheus unmasking becomes publicly distributed.
  • Villainous Legacy: In Season Six, his influence continues to be felt despite Prometheus's death. Black Siren, who is only a threat to Team Arrow because Prometheus broke her out of the Pipeline, is a major villain, and the after-effects of the destruction of Lian Yu leave Oliver as a single father, Diggle with severe nerve damage, and Thea in a coma. Additionally, Felicity helped to free Cayden James in her effort to defeat Prometheus, which ultimately led to James himself becoming a major problem.
  • Villainous Lineage: Both of his parents were/are really horrible people who don't bat an eye to human suffering. Small wonder he turned out to be a vicious monster.
  • Vocal Evolution: Slightly. In his first three appearances, the deep voice produced by his voice changer has a more synthesized, almost robotic tone, but after that, it becomes Michael Dorn's ordinary voice.
  • Walking Armory: He's dressed like the Green Arrow and likewise carries a bow, in addition to a sword and throwing stars, the latter of which he uses to commit his murders (to the point where he becomes known as the "Throwing Star Killer").
  • Wicked Cultured: In "Disbanded", after murdering the guards tasked with protecting him, he drives back while listening and whistling to the tune of "It's A Beautiful Morning" on the radio.
  • Would Hit a Girl: Aside from his female victims, Prometheus has no problem getting physical with Black Siren when she disagrees with him.
  • Would Hurt a Child: Threatens Oliver's 10-year old son in "Kapiushon", and later abducts him to use as leverage against Oliver. In "Lian Yu", he goes so far as to threaten to snap William's neck to try and force Oliver into killing him.
  • Xanatos Gambit:
    • For the majority of the season he masqueraded as the Star City district attorney, and helped imprison many criminals. After the heroes become wise to his true nature, he's able to walk around in broad daylight for them to see knowing they had no chance of convicting him of being guilty. When they go to a lot of trouble to finally expose him to the public, he knew fully well that would mean every case he passed would be considered invalid and every criminal he locked behind bars would be let out.
    • He gives one to Oliver in the Season Five finale. Prometheus rigs Lian Yu with explosives that will blow as soon as his life readings stop, while all of Oliver's friends are still on the island. He then holds Oliver's son, William, hostage and will kill him if Oliver didn't stop him. Thus, Oliver has to decide between letting his son die, or killing Adrian and causing the island to explode. Oliver tries to Take a Third Option and disarms Adrian while freeing his son, but Adrian doesn't allow this and shoots himself in the head to spite Oliver one last time. It backfires spectacularly because by a sheer miracle everyone on Oliver's side save Samantha survived, while everyone on Prometheus' side save Black Siren and Talia died.
  • You Killed My Father: He's the son of Justin Claybourne, a corrupt pharmaceuticals executive whom Oliver killed in Season One as the Hood.

Alternative Title(s): Arrowverse Adrian Chase