Bastard Understudy: Was raised on an island by a master criminal and his gang, and learned half his trade from them. The other half was learned from Ronin (the greatest smuggler of all times, in Diabolik's own words), The DragonMaster Chang, and Natasha Morgan (the ruler of organized crime of Clerville when Diabolik first arrived).
Best shown in the two-parter "A Cursed Island"-"Escape from the Island", where a Mega Corp. started building a launch base for missiles on a tropical island... And Diabolik, once he didn't receive the annual package from the natives, scared away the workers (natives of nearby islands) with a Scooby-Doo Hoax, murdered a number of white workers, the supervisor and his replacement, told the vice-CEO to stop the works as soon as he became CEO and then caused a deadly accident to the CEO.
Crazy-Prepared: He always has some new but useful gadget, or some trap around, that, once used and discover, you just wonder why he made it. Also, he's conditioned to resist truth serums and mind-altering drugs.
In the story "King's Treasure" we find out he keeps around an altered version of the formula for his perfect masks modified to shrink, and thus suffucate whoever is wearing them, when exposed to intense sunlight. We found out because Wolf, his chemistry teacher at King's Island, had captured him and was forcing him to give up the formula or be killed, thus Diabolik gave him the altered version expecting him to try and kill him and then die a Karmic Death as soon as he left the poorly lighted environment he was forced to live in after getting the eyes ruined in a fire.
In one occasion Diabolik was captured by a Cult and administered an incredibly powerful mind-altering drug to brainwash him, so powerful that just a dose would allow the cult leader to transform most people into loyal servants. With Diabolik, it took a week of triple and quadruple doses to condition him, and even then he was able to resist to some degree and completely recovered with a small dose of stimulants.
Cut Lex Luthor a Check: He could easily support himself by working as a chemist, an engineer, an inventor, a martial arts instructor or professional fighter, a bodyguard, and even a cop (among many other professions), or by simply marketing his masks and enjoying the royalties. Yet, he steals.
Dark and Troubled Past: As all the protagonists, but less than the others, as his childhood on King's Island was, in the end, happy, at least until King decided to kill him for the secret of his masks.
Enemy Mine: Once in a while he has teamed up with Ginko. It usually happens when there's a threat big enough for the latter to justify postponing his hunt for Diabolik, but sometimes it happens because It's Personal or by complete accident (it happens when they are investigating on the same target, Diabolik to rob'em blind and Ginko to arrest them, and their efforts help each other).
Even Evil Has Standards: He always keeps his word, and tries to not kill if he can't. He also despises human trafficking, and being caught by him practicing it is a quick way to get jailed (early on) or killed (most recent run-ins with traffickers), and forcefully addicting someone to drugs (especially someone with intelligence and willpower) is something he considers almost unforgivable (almost: while he killed the ones who did that to Ginko, he spared the ones who did it to Eva as they were aiming to the daughter of a drug lord and accidentally got the wrong target).
Diabolik's word is considered so good that him accusing a mob boss of killing another one caused the son of the victim to hunt down the other one.
Everyone Has Standards: Finding out he had accidentally helped a paedophile to escape justice made him furious. He also despises rapists.
Faking the Dead: He did it multiple times. The two incidents that stand at the top are when he, unable to break Eva out of jail due Ginko's security measures, faked being terminally ill and blowing himself up to die on his terms, and when he set up a situation where Ginko would be inclined to believe an headless corpse was actually his body and fooled the DNA test.
Impossible Thief: A relatively realistic example, but still capable of stealing things bigger than they should be possible to steal.
It Amused Me: Diabolik steals because he loves the challenge, not because he needs to. Also, once in a while he'll do apparently pointless things just to prank Ginko.
Latex Perfection: In-universe, he invented it, and he's the only person in the world that can actually create the masks right (some people copied the masks but they always melted after a while, and Eva knows how to make the mask but not the actual plastic to make them).
McNinja: His signature suit is directly modelled on a ninja outfit, only modified to prevent easy grabbing.
Painted-On Pants: His suit is so thin he has been described as looking like a naked man painted black when wearing it.
Memetic Badass: In Italy everyone knows he can take the looks of everyone thanks to his masks (universally known in Italy as "Diabolik's masks").
Lampshaded by the two-parter "A Cursed Island"-"Escape from the Island", where we find out that the natives of the island of Bo-Tang (who provide him with the resin he needs to make his masks permanent) call him Ri-Mau, "The Man with Many Faces and Many Souls" and consider him an emissary of their god precisely because of his masks.
Mike Nelson, Destroyer of Worlds: He didn't destroy any world, but acquired his terrible famecompletely by accident (and Natasha Morgan forcefully getting the last word in their discussion if he should use fear as a weapon or not), and was originally reluctant to do it. Also, once in a while he'll cause quite the damage without actively trying it. A few examples:
In an early story he stole the crown jewels of Benglait. A few days later he learns from the journal that the theft worsened the political and social tensions in Benglait because the locals couldn't believe the police had failed to retrieve them (they didn't know of Diabolik yet), and the country was on the verge of a civil war (they had already tried to bomb the king). He then stopped the civil war from actually starting by selling the jewels back to the Royal Family (at least some of it: Ginko managed to recover the rest), but the damage had already been done, and a few years later a relatively peaceful riot expanded in a quick but violent revolution;
On the opposite note, a later special issue reveals that the theft was the second attempt, and during the first failed one he was confronted by a terrorist group and crippled it, thus lessening the growing tensions for a while.
In a special issue he killed the chief of the police of a small Banana Republic and later impersonated him for a failed heist. As soon as the coroner gave the hour of death of the cop, it caused a zombie scare.
The Unreveal: Once in a while a story promises to reveal Diabolik's true origin, only to pull the rug from under the reader at the end of the issue.
One story had Eva being forced to tell a journalist something about Diabolik unknown to the general public, and she revealed that Diabolik is Walter Dorian's lost twin, thus explaining their uncanny resemblance. Later in the story Eva sent documents proving it was a lie.
The 2014 special issue "The True Story of King's Island" showed King's men rescuing the future Diabolik from that shipwreck and give their boss and The Dragon Prof some documents that revealed his name and origins. King and Prof decided to keep them secret, and Prof was killed by Diabolik before he could even tell him he knew them, while King, as you know, died well before the first issue.
Names to Run Away From Really Fast: Out of universe, Diabolik is derived from "diabolico", Italian for "devilish". In-universe, he took the name from a man-eating panther that had been called Diabolik because it sounds like "diabolico": the panther had been King's last true enemy until he managed to kill and stuff it, and upon discovering that our protagonist had mortally wounded him he gave him his name.
Pragmatic Villain: He started killing less people because he doesn't need to anymore, and shifted his main focus of targets from honest people to crooks and other Jerkass Victims because honest people tend to keep their money and valuables in banks that are becoming too much even for him. That said, he still has absolutely no problems at murdering people or cause a massacre (particularly notable is the time he caused a shootout between the police and a group of trigger-happy private security agents who believed they were facing fake cops) if he deems it necessary to get to steal whatever he's targeting.
Properly Paranoid: He has dozens of boobytrapped hideouts, more gadgets than Batman, and has even placed traps on half of Clerville's roads. Given it's barely enough when dealing with Ginko, you'll forgive him for growing more paranoid with time...
In one occasion, he used a chance hospitalization of Ginko to hypnotically condition him to let him go when Diabolik told him a certain phrase, just in case Ginko just happened to hold Diabolik at gunpoint with Eva already captured and nobody else present. A strange precaution for a nearly-impossible situation... Except that, during the very next caper, Diabolik found himself held at gunpoint by Ginko, with Eva Bound and Gagged in a corner and nobody else present. Diabolik himself didn't expect to have to use that trick so soon.
Even worse, that trick should have ruined Ginko's career, or at least keep him out of the way long enough to steal something without him in the way. As expected, Ginko is suspended for the inquiry. As not expected, his replacement asks Ginko for advice, and the next caper not only fails but results in the police raiding one of his hideouts, taking back some of his loots and finding evidence that proved Ginko's innocence.
Refuge in Audacity: Some of his plans are this. For example, when Eva was first arrested and he had no idea on how to break her out before she was sentenced to death and executed he kidnapped a top model and faked dumping her, thus pitying the tribunal into giving her a lesser sentence, and his way to break her out involved a typhoid fever outbreak. In another occasion he needed to keep Ginko away from a certain place for a month, so he decided to get caught blackmailing two actors to distract him (this one didn't work long enough, and Ginko would have caught him had his boss let him do the job).
Tranquil Fury: Even when furious, he's always calm and collected.
Shrouded in Myth: This is how Gustavo Garian describes him in the first story: "Ginko says that, in the international criminal underground, people whisper about a being called Diabolik". Ginko wouldn't be sure that Diabolik actually existed until he stumbles on a room filled with Diabolik's legendary masks (the ability to change face at a moment's notice was one of the traits ascribed to the mysterious being), and he'll remain nothing more than a legend until the story "The Arrest of Diabolik". Even then, some still think he's an alien.
Villain with Good Publicity: Diabolik is surprisingly popular in spite of all his thefts and murders, and has interacted with his own fandom in multiple occasions (including a memorable one where he stole a Jaguar E-Type from an exhibition dedicated to him). For obvious reasons, this drives Ginko mad.
Worthy Opponent: He considers Ginko this. In an early story he even declared that he hated Ginko because he was this and thus couldn't despise him like with the rest of mankind, but nobody's fooled (especially as that followed him musing that he and Ginko together could Take Over the World and Eva asking if he hated him or not), and in a later occasion he defended him after he was insulted.
"Ginko is no imbecile! We are equals, we just walk on opposite paths. Maybe one day we'll kill each other, but no mocking!"
Lady Eva Kant
Diabolik's lover and One True Love. An impoverished noblewoman, she fell for Diabolik at first sight, and saved his life in her debut story.Tropes associated with Eva Kant:
Killer Rabbit: You look her, and you think she's harmless. Then she'll beat the crap out of anyone stupid enough to give her a reason, even when completely disarmed and shackled (during one of her brief periods in prison, a guard made an homophobic remark to a gay friend of hers. Said guard 'mysteriously' fell to the ground and hit the face the same moment Eva rose from her chair, and Ginko saw fit warning him to shut up and watch where he walked before he died).
Bastard Understudy: While she already knew her fair bit about being a criminal, Diabolik taught her many things.
Berserk Button: Wife bashers, homophobes, animal mistreatment and harm to children are known to make her positively murderous.
An early story where Diabolik faked dumping her (Eva had been arrested for the first time and Diabolik had no idea how to break her out before she was sentenced to death and executed, so he kidnapped a top model and faked dumping Eva to pity the jury into giving her a lesser punishment while he put together a plan to break her out) didn't help either.
Eva is immune to common truth serums and mind-altering drugs, and highly resistant to the most advanced ones. Sounds crazy, right? A fair number of old stories had her being administered such drugs by various captors, including Ginko (in his case, simple truth serum), and one had her being captured by terrorists who, believing her someone else, gave her a powerful will-suppressing drug only to get killed in seconds after they untied her.
Cut Lex Luthor a Check: Not to Diabolik's level, but she could still be a good cop (of course), lawyer, actress, top model, professional athlete and singer (and in fact she has been a professional singer when living in South Africa).
Dark and Troubled Past: Illegitimate daughter of a nobleman, her mother was Driven to Suicide by her uncle Anthony and died in her arms, uncle Anthony left her in an Orphanage of Fear until she escaped, and worked as an industrial spy in South Africa until she met her uncle again and married him to get her last name back (they never consummated, and in fact finding out who she was gave Anthony Kant an heart attack).
Deadpan Snarker: And how! Her insistence her husband's death devoured by a panther was an accident? She didn't mean to set the panther on him, she was just trying to survive when he set the panther on her.
More Deadly Than The Male: By now, the worst Diabolik will do you when you piss him off is to kill you or let you live knowing Diabolik knows where you are and one day will grow bored enough to come and kill you. Eva, however, will lock you into your own secret vault with no water nor food save for two guys she and Diabolik have just killed, wait for you to realize she doesn't know of the emergency keyboard inside the vault from which you can open it and then digit the wrong combination enough times to deactivate both the external and the internal one, telling you what she's doing as she does it.
No Celebrities Were Harmed: Her looks are based on the actresses Grace Kelly and Kim Novak, and one of the initial artists based his poses of Eva Kant on the Italian model Cristina Adinolfi photographed in those same poses.
Orphanage of Fear: Eva grew up in Morben, a boarding school doubling as orphanage, reformatory for problematic children and dumping ground for undesiderable children from rich families, filled with Sadistic Teachers prone to beat you up for small infractions and lock you in a dark room without food and water for days for the worse infractions. Many years after escaping, she discovered that worse things were happening there: the headmistress Clothilde Luger was stealing inheritances from some of her students and murdering them. Discovering that and that her one friend there was among the victims was enough for Eva to track the headmistress down and murder her.
In "King's Treasure" she replaced part of her hair with extensions that emitted a blinding flash, in case the Mooks that would search her for weapons were ordered to try and murder her and Diabolik. She had to throw them.
Spell My Name with an S: Her last name comes from the philosopher Immanuel Kant and is pronounced the same way, but many in Italy mispronounce it as "Kent".
What Measure Is a Non-Human?: According to a jail director, being Eva Kant means you can imprison her in solitary confinement and keep her away from the world. Given she nearly murdered a very stupid guard while shackled, he kinda had a point...
Combat Pragmatist: Sort of: he's not above using Diabolik's own masks for disguise, and, in one infamous occasion, used Diabolik's confiscated gadgets to escort some statues away under his nose.
The Comically Serious: Capable of putting himself into strange or ridiculous situations without losing his stoic expression.
Cut Lex Luthor a Check: Inverted: he could be a magnificent master thief or mob boss, but he's too honest to even consider it.
Death by Origin Story: Two: a family friend died saving him from a criminal and his own impulsiveness when he was a child, and a police academy companion died protecting him.
The Dreaded: To most crooks, finding out Ginko is out to get them means they have to start running. Those who don't are either Diabolik (who still fears him) or learn otherwise soon.
Enemy Mine: Occasionally forged a loose alliance with Diabolik to deal with bigger threats, like gangs who managed to capture them both, terrorists organizations or a pharmaceutical company trying to cause an epidemics to make money from the cure. It sometimes happens when It's Personal (for example, one of those terrorist organizations had nearly killed Altea in a bombing, prompting the team-up), or by complete accident (if they're investigating on the same crook, Diabolik to rob'em blind and Ginko for an arrest, their efforts usually help each other).
Evil Cannot Comprehend Good: Inverted: it's Ginko who has trouble understanding Diabolik's motivations, at least at the start (and was utterly creeped out by him). Later this disappears, as, after Diabolik told him his Origin Story in "Diabolik, Who Are You?", he started understanding him.
Expy: Loosely based on inspector Juve from FantŰmas and, at the start, on Sherlock Holmes (he even used to look like him, before having his character design modified, and still smokes a pipe).
A Fate Worse Than Death: Forcefully addicting him to heroin before revealing this to the world. Nearly happened to him at the hands of a group of criminals led by the woman of a Corrupt Cop he arrested and locked in a prison where he was killed by the inmates, but Diabolik stepped him before they could reveal his addiction, exterminated the gang and brought Ginko to Altea so he could be cured in secret.
Good Old Fisticuffs: Among his many differences with Diabolik, he favours bar brawling-style punching to sophisticated exotic martial arts. Whenever they fight each other in hand-to-hand, Ginko punches out Diabolik nine times out of ten, including that occasion where Ginko uppercutted the King of Terror before even realizing it wasn't a Mook.
Heroic Gloating: Whenever he defeats Diabolik he has to tell someone how he did it. Being Genre Savvy, he does it when Diabolik is already foiled, and tries to do so away from Diabolik's bugs.
Master of Disguise: Using wigs, theatrical make-up and clothes he wouldn't normally wear (sometimes to his own embarrassment). Has occasionally used Diabolik's own masks.
Mundane Solution: He's prone to this. Do you need to move some gold under Diabolik's nose? He'll hide it in the bags of the escort motorcycles (when he did this Diabolik had no idea of where the gold was). Do you need to move fifteen tonnes of gold? He'll have it fused into fifteen bricks of a tonne each, put it into a three tonnes steel case safe welded shut in such a way it would take two days to open it and weld it to a six tonnes railway wagon, and dare any criminal to move the mass of twenty four tonnes without a huge crane that they can't possibly take with them (Diabolik found a way to bring the train where he had a sufficiently large crane).
No Social Skills: Played with: he has them, but absolutely loathes getting into any sort of situation where more than basic politeness is required.
Properly Paranoid: In the first story, he started shooting strawmen in case Diabolik was hidden in one of them. Diabolik was in a strawman, and was struggling to not cry in pain and fall down after getting shot in the arm. This continues to this day.
Particularly accentuated in the early stories. The faceless body identified as the butler of the Minister of Justice broke a leg a year earlier? Diabolik was the butler and is now disguised as the Minister, and the guy they're about to execute as Diabolik is really the Minister. A journal describes a failed caper in India as been committed with "hellish cunning"? It's Diabolik. And, like in the two occasions we've described, he's always right.
Refuge in Audacity: He usually favors easier things, but he's still capable of putting together a dancing show with the dancers actually being armed policewomen wearing a fortune in emerald jewels fitted with tracking devices just to chase the King of Terror (the story is "Ginko Attacks", of 1965. Diabolik evaded capture, but Ginko managed to raid a crapload of his refuges).
Shadow Archetype: To Diabolik, to the point he may be described as being how Diabolik would be if he was a cop. To better drive the point home, his looks have been redesigned into being a more generic Diabolik.
‹bermensch: Played with: on one side, he follows the morality and rules of society, on the other he rejects the common interpretation. This is also the main difference between Diabolik and him: Diabolik was raised by criminals and forced to kill his own father figure, while Ginko was raised by an honest family, and finding out his father had committed the crime he had been convicted for only made him more honest.
What the Hell, Hero?: His obsession with Diabolik has caused him to do a few reprehensible acts, even getting called out by Altea once.
An early victim of Diabolik, and the first named character in the whole series, even introducing Diabolik's legend to the reader. Killed himself in "The Return of Gustavo Garian".Tropes associated with Gustavo:
Beware the Nice Ones: He's a nice guy, honest and brave, but nowhere in Diabolik and Ginko's league. He also a good shot with the pistol, and nearly caused Diabolik's death in multiple occasions.
Break the Cutie: In their first encounter, Diabolik murdered his father and his aunt, drove his mother mad twice, and nearly killed him, all in order to steal a priceless treasure from him.
The Charmer: He's quite the ladies' man... And thus Ginko has occasionally used him to spy villains with a cute daughter or sister.
Didn't See That Coming: The reason he's a danger to Diabolik is that he's rarely aware of him being around, and if he is he just doesn't consider him a danger.
Example of him not knowing Gustavo is around: by using the face of a dead cop during a failed heist in a Banana Republic, Diabolik accidentally caused a zombie scare, leading Gustavo, who was trying to pin various crimes on the local dictator, to realize Diabolik is around and call Ginko. And when Gustavo and Ginko are captured by local gangsters, Gustavo manages to sick the gangsters on Diabolik.
Example of Diabolik not considering Gustavo a danger: in "The Return of Gustavo Garian", Diabolik, after faking his death and killing three hitmen that had nearly got him multiple times, disguises himself as Ginko and asks Gustavo why the hitmen were about to target him in the attempt to find out their employer, only for Gustavo to confess he hired the killers. Gustavo was slowly dying due an unspecified disease, so he rallied some former victims of Diabolik (including a millionaire that seemed to be the employer) to raise the funds and sick the hitmen on Diabolik, and then commissioned them to kill him. Diabolik himself was left speechless.
Kick the Dog: Diabolik could have used less scarring and murderous ways to steal that treasure from Gustavo. Yet he did what he did, and, years later, stole the equally priceless original container of that treasure (he had originally missed it due a clerical error).
The Dog Bites Back: Once in a while, he found himself in a position to strike back at Diabolik, who had to deal with things like a small army of South American gangsters and the three best hitmen of the world.
Killed Off for Real: Convinced his hitmen had killed Diabolik and knowing Eva got them before they could put him out of his misery, he kills himself in "The Return of Gustavo Garian".
Shipper on Deck: Both with Ginko's relationship with Esmeralda RadiŤ in the earliest stories and with the more recent with Altea.
The Watson: His main job when he was a recurring character was to get Ginko to explain Diabolik's latest ruse.
Altea Von Waller, Duchess of Vallenberg
Ginko's fiancee and a foreign noblewoman. They first met when Diabolik blackmailed her country and choose her castle for the payment, prompting Ginko to try and stop him.Tropes associated with Altea:
Berserk Button: Don't harm Ginko, or she'll have you murdered by Diabolik (that was plan B. Plan A involved a Professional Killer, but Diabolik killed and replaced him for a heist and she improvised).
Beware the Nice Ones: A very nice woman, funny, generous... Who nearly brought down a terrorist organization by herself, and has once managed to sick Diabolik on a mob boss (the boss died two nights later).
Friendly Enemy: She's on relatively good terms with Diabolik and especially Eva.
I Did What I Had to Do: She's ready to destroy evidence to ensure justice, and will put a hit on someone and sick Diabolik on them if it can save Ginko.
Killer Rabbit: She's just harmless looking, and physically speaking she's just a woman with above average fitness. Aside for the many things you see in this entry, she also captured Diabolik and Eva at the same time, without Ginko's help (in fact, Ginko being so depressed about arresting aCorrupt Copfrom his own squad and letting him getting murdered in prison that he was thinking about resigning is the reason she did it: she wanted to cheer him by serving him Diabolik and Eva on a silver platter). Oh, and she did it with a Trap Door, of all things.
Meet Cute: She first met Ginko when he broke in her home.
Modest Royalty: Wears elegant but modestly, and only flaunts her wealth if forced by circumstances.
Silk Hiding Steel: Many, including her own husband and leader of the Grey Ravens terrorists, believe her weak and gullible. Then she shows up holding them at gunpoint, or smiles while they find out that she has served them to Ginko on a silver platter, or Ginko casually mentions she's them who got the decisive evidence on the criminals...
Diabolik's first lover in the series, a gorgeous nurse in a psychiatric hospital. Since she accidentally revealed his true face to the world and he drove her mad, she's among Diabolik's worst enemies ever.Tropes associated with Elisabeth:
Break the Cutie: In the span of a few days, her beloved Walter Dorian was revealed to be the terrifying murderer Diabolik, she was forced to testify against him and have a direct part in him being sentenced to death, and Eva Kant saved him in a way that made clear she had already been replaced as lover, driving her on the verge of madness. Then, in the aptly-titled story "Atrocious Revenge", Diabolik waited for her to recover and find a new love in her therapist to drive her fully mad.
Harsher in Hindsight: This became much harsher with "In the Tunnel of Madness", when we find out that she would have become Diabolik's accomplice had he just asked. Gets even harsher with "Inside Clerville's Underground": he did consider doing that and even tested her, but, after proving herself a capable accomplice, she failed by telling Ginko about their encounter with a dead terrorist (even if she omitted the circumstances).
Deadpan Snarker: Has shades of this. When she meets Diabolik she's quick to point out that, in spite of the name, she's a nurse and not HM The Queen.
years later, after recovering from that, she captured Diabolik, but her husband stopping her from torturing him to death drove her deeper into madness, even convincing herself she was in love with Ginko, who loathed Diabolik the most;
a few years later she shot who she believed was Diabolik disguised as Ginko, but when she checked the dying body she found out the face was not a mask and that it was her husband who got a plastic surgery in the desperate attempt to win her love, and she had already confirmed that the Ginko who tricked her into killing her husband was the real one. This completely broke her, and it's implied she died a few days after.
Hello, Nurse!: One of three women to ever get this reaction from Diabolik. Bonus point for actually being a nurse when it happened.
Hidden Depths: She may have been lovestuck with him at the time, but she was the first person outside of the criminal underground to suspect Walter Dorian of being anything more than an honest businessman (even if she didn't expect him to be Diabolik. Not even the underground did).
The flashback of "Inside Clervilles' Underground" shows she's fully capable of identifying a very functional madman on sight, and has her giving a brief explanation of how they may seem sane while hiding behind a mask.
Kick the Dog: Why did Diabolik choose to drive her mad in revenge? Because she was terrified of becoming mad, and he knew it.
The Dog Bites Back: When they met again, Liz managed to kidnap him and tortured him for days, with the full intent to continue until he was dead, and delivered the pictures to Eva. The plan also included delivering Eva the picture of the corpse and then call the police on her, and it took a combination of Eva managing to track her down and Alberto trying to stop her to save Diabolik.
Love Makes You Crazy, and Evil: Her madness, and all her evil acts, stems from her having never stopped to love Diabolik, even after convincing herself she was in love with Ginko.
My God, What Have I Done?: After being tricked into killing her husband, who, to win her love, had even got a plastic surgery to look like Ginko. Ginko himself doing the trickery didn't help.
After "The Face of Hate", Diabolik has this reaction about what he did to her.
For Want of a Nail: Diabolik originally approached her because she was beautiful and at the time he was aplayboy. Then during the date he noticed she was wearing a ring from Clelia Garian, who he had personally Driven to Madness after wearing the mask of her husband Stefano (who he had just murdered) before her eyes, and, taking advantage of her now being half drunk, found out she had given her a letter for her son Gustavo (that Diabolik was tailing to rob him under Stefano's identity). After destroying said letter (that, had written in a moment of lucidity, revealed the existance of Diabolik's perfect masks and that her husband's murderer was using his identity that way), he decided to keep her around.
Scars Are Forever: After a car crash, he gets disfigured and refuses plastic surgery, as Elisabeth had come to hate his face and he wouldn't have a use for his old face anymore. Then Subverted when he has the surgeon make him look like Ginko.
Face-Heel Turn: And how! At first she's just the sister of a painter killed by Diabolik and a nice girl, if a flat character. After years of not appearing, she's an high-ranking member of a drug trafficking gang, and got Ginko framed as an accomplice.
Great White Hunter: Before he arrived, King's Island was full of dangerous beasts. He killed them all.
The panther Diabolik actually sent King and dozens of men running for the hills when he first tried with it. He later made a solo attempt and succeeded. There's a good reason King stuffed that panther and kept it around to show it off...
My Greatest Failure: Failing to save the little brother of his lover. That's the reason he had his Mooks save a little child from a boat in a storm...
Posthumous Character: Killed by the nameless boy he would name Diabolik in his last breath, well before the start of the series.
In Name Only: The animated series has a character named Wolf. He's nothing like the original.
Karmic Death: Obsessed by Diabolik's masks to the point of blackmailing him to have the formula and then trying to kill him, he dies suffucated by a mask prepared with Diabolik's formula (altered just in case).
Latex Perfection: The man who actually had the idea. In fact Diabolik started from his research.
Overshadowed by Awesome: The only one of King's men who found himself not as good as Diabolik in his own field: in spite of decades of research, he never managed to produce a durable mask.
Irony: Wolf had found the secret ingredient, the resin of the sacred threes of the island of Bo-Tang, but had been unable to properly use it. After Ronin's death Diabolik looked at Wolf's notes and, once he convinced the inhabitants to give him the resin, perfected his masks.
Posthumous Character: He, Dempur and Cen-Fu kidnapped Natasha Morgan and brought her on a plane to try and use her against Diabolik, but she crashed the plane.
Token Good Teammate: Differently from the other members of King's organization he was no criminal, but was forced to run from the law when he accidentally killed the man who stole the credit for one of his creations.
What Happened to the Mouse?: While we know what happened to the rest of the group, we have no idea where Suanda went after King's death.
Posthumous Character: He, Dempur and Lopez kidnapped Natasha Morgan and brought her on a plane to try and use her against Diabolik, but she crashed the plane.
Posthumous Character: He, Dempur and Cen-Fu kidnapped Natasha Morgan and brought her on a plane to try and use her against Diabolik, but she killed him with his own knife before crashing the plane.
Other Notable Characters
Federico, the Duke of Vallenberg
The absolute leader of the organized crime of Clerville before retiring some time after Diabolik showed up. She taught him how to survive in the Wretched Hive that was hidden Clerville's veil of respectability.
Badass: Of the kind she could face a furious Diabolik unarmed and not flinch but mock him.
Retired Badass: She retired in the story she appeared in. Then King's men decided to kidnap her...
The Don: Rare female example, and so powerful she owned Clerville's organized crime. While there were other bosses around, they all obeyed her.
Manipulative Bastard: She knows the value of emotional manipulation, and isn't shy about using it. She also suggested Diabolik to use the fear he could potentially inspire with his fame if he made some effort to increase it (even using the words "King of Terror.
Revenge: Much more restrained than Diabolik in this, but if you scorn her you're better run.
Sink or Swim Mentor: She has shades of this. Case in point: Diabolik wasn't too happy about having some fame at Clerville, especially for the danger of someone deciding to challenge him to prove himself better, and didn't want even when Natasha pointed out the advantages of increasing his fame and becoming the "King of Terror" (her exact words), so one day she made sure his fame suddenly increased to larger-than-life proportions.
Ronin and Master Cheng
The greatest smuggler of all times (Diabolik's words) and a martial arts master training his bodyguards. Ronin owed Diabolik a favour, so he took him under his wing and taught him some tricks before being murdered by Walter DorianTropes associated with Ronin and Master Cheng:
Chekhov's Gunman: And how: Diabolik first mentioned "the greatest smuggler of all times [...] the only friend I ever had" in passing in the 1963 story "The Phantom Murderer" while telling Eva who built the manor they were in, but that was only expanded in "The Years Lost in Blood", a story of the "Il Grande Diabolik" series published in 2006!
The man whose identity was used by Diabolik in the early stories, a billionaire working in the import-export sector to cover his smuggling. Presumed dead by Diabolik's own hands, he later shows up and tries to have his revenge on Diabolik.Tropes associated with Dorian:
Chekhov's Gunman: The world record, beating Ronin by a few months thanks to being mentioned in the very first story and appearing in person in "The Years Lost in Blood" with him.
Chekhov's Gun: In the parts of "The Years Lost in Blood" before the flashback sequence we see Dorian having the habit of making origami whenever he's nervous or excited. This clues Diabolik on who killed Ronin.
Didn't Think This Through: The reason he was in the Far East, where Diabolik stole his identity: he tried to steal from Natasha Morgan, his lover and the woman ruling over Clerville's organized crime. He was lucky to have been allowed to leave the country...
Genre Savvy: Surprisingly so. After what he pulled with Natasha Morgan you wouldn't expect this, but when he decided to make Diabolik pay he first looked up all available information on him, and when he managed to put him into a position of weakness he just demanded a lot of money and the promise Diabolik wouldn't try and get revenge on him for that. He only got killed due sheer bad luck...
Happily Adopted: Son of Silvia Hammer, herself daughter of a steel magnate, and given up for adoption as soon as he was born. He was adopted immediately.
Bastard Bastard: Sort of: he was adopted by a rich family and grew up happy and, apparently, not even knowing he was adopted, but was still a villain.
Mixed Ancestry: His father was an Asian gardener, explaining his looks. Said father was 'disappeared' by the Hammers.
Long-Lost Relative: Subverted: in one occasion Eva, captured by a reporter and forced to reveal a story of Diabolik's past in exchange for her freedom, told her that the King of Terror was Walter's lost twin... And as soon as the journalist published her story she mailed evidence that Walter Dorian was an only child to another newspaper.
Humiliation Conga: Chased out of his country, beaten up and thrown in a flooded river by a lookalike, captured by soldiers planning to start a coup, imprisoned for years as a spy, nearly killed in an helicopter attack during the revolution, finds out the lookalike confessed his murder and all his money and properties were confiscated because he had no heirs, and then meets the lookalike to have him pay him back the damages only to end with a knife in a lung for accidentally revealing he had a good reason to kill him.
It's Personal: Walter Dorian had Master Cheng killed and personally tortured Ronin to death.
Laser-Guided Karma: The first time they met, Diabolik tried to kill him without knowing he had a good reason to, and accidentally sentenced him to years in a military prison accused of being a spy. When they meet again, Diabolik finds out he has a good reason to kill him, and does just that.
Mugging the Monster: When he had Ronin tortured to death and his organization destroyed he was just making what he thought was a pre-emptive attack on a business rival about to attack him. He had no idea he was giving the future King of Terror a good reason to kill him and do it slow.
Not-So-Harmless Villain: Diabolik learned that Walter Dorian was still alive when he found him sitting in his parlour after overpowering Eva and putting her in another room, allegedly with a time bomb. Dorian then informed him that he baited Diabolik into using that particular refuge at that particular time. Had he not accidentally informed Diabolik he had a good reason to murder him (something he himself didn't know), he would have got away with it.