Captain Snow, The Heavy of Archipelago is Chaotic Evil and no mistake. A dreaded, bloodthirsty pirate who does regularly Put the "Laughter" in "Slaughter", serves (nominally) an entity bent on Kill All Humans, tortures people in a variety of ways because he finds it amusing and generally brings chaos wherever he goes. Also capable of charming an old lady (whom he later kills), biding his time when an impatient associate wants to attack, right now! pranking people with a Stealth Hi/Bye (unnervingly often) and stopping a Rape, Pillage, and Burn to enjoy a cuppa at a local tea house... as the buildings around it burnt to the ground. His last act before dying was to save the life of one of the protagonists. Don't try to predict what Snow will do. He'll do something else.
Bastard: Dongsoo Seon seems like a friendly business man and a good father...but he's also a vicious serial killer who has used his kindly persona to fool many people, including the police several times.
Dragon Ball Multiverse: U4 Buu. Even as he's absorbing the entire stadium, he doesn't fail to crack a few jokes, but it's clear from, well, the fact that he's absorbing the entire stadium shows that he has no remorse or desire to hold back.
Drowtales has Snadhya'rune Vel'Sharen, who presents herself as an enlightened peacemaker with the best interests of her kind at heart to mask her true nature, and once things start going wrong she has her Mask of Sanity slip to reveal her true sociopathy
The evil wizard Faden from Exiern, like Mister J, is in the evil game as much for the lulz as anything else.
Ghosts of the Future: Nicole. She appears as friendly and approachable as her mainstream counterpart. But don't let that fool you — she's got a cruel streak matched only by her ruthlessness.
Bangladesh Dupree, who derives much endlessglee from torture, murder, and mass destruction. Her upbeat personality and casual attitude only make her more likeable — to the audience, at least. Most other characters rather fear her. Contrast to the Other who showers cutesy and "darlings" all the time, but tries too hard.
It's notable though that she's also like that around people she absolutely genuinely cares about such as Gilgamesh or her employer, in which case her affable personality is actually genuine and sincere friendship.
Also, Castle Heterodyne, which has an attitude rather like that of the aforementioned HK-47 and a fanatical devotion to the Heterodynes. Except it's the size of a vast, sprawling complex and a lot more creatively vicious.
Similar to Dupree, Castle's faux personality could be actually sincere towards certain people such as any Heterodynes as well as fellow Heterodyne servants, including ones such as the jagers where they can converse about relatively non-evil subjects such as potential lovers for their Hterodyne masters.
Doc Scratch pretends to be a pleasant old man with a soft spot for young ladies. In reality, he is a conniving, devious villain, who has imprisoned an innocent girl in his house who is now a Death Seeker because of it, is the cause of a previously peaceful planet becoming a Crapsack World, and in spite of never once lying, manages to convince every single one of the children that they are destroying the Green Sun, when in reality they were creating it. The kicker? His only reason for doing this was to prove that they are "S u c k e r s."
In late Act 6, Aranea has unexpectedly shown this trait. She's just trying to help, guys! And if a few people get permanently killed or mindscrewed along the way, well, it's all for the greater good, right?
Mottom plays the role of benevolent God-Empress to her court while being a world-eating monster underneath. When King Pryan Sor approaches Mottom with a "gift" of the bones of his people who have died of famine because of her actions, she gently tells her she's been touched by his words and promises to grant him unending life and the ability to feed others. Then she violently transforms him into a tree. When she is in her Crone form she becomes considerably less affable, but also considerably more honest as a result.
Incubus is Allison's Evil Mentor and usually acts as something like a Big Brother Mentor to her, openly encouraging her to master her power and granting her a piece of his own soul to help accelerate matters. While his soft spot for Allison seems to be to some degree genuine, it does not stop Incubus from being a soul-consuming, Black Magic-wielding, Anarcho-Tyranny-inducing warlord who is a dick to pretty much everyone else in the Multiverse. When the chips are down and Allison suffers a breakdown in Breaker of Infinities, Incubus kills Cio over They Were Holding You Back and (when that fails and she goes catatonic) tries to kill Allison as well to gain her Master Key.
The Big Bad Xykon is a sadistic monster with no redeeming qualities, not to mention kind of a dick, but he can be very funny and charming (even Redcloak, who loathes Xykon and has been subtly manipulating him for years, admits that Xykon can be good company but warns Jirix that this does not mean that Xykon can be trusted one iota.) Xykon's Breaking Speeches tend to be very conversational in tone if not subject matternote Considering that Xykon is epic level Sorcerer, his Charisma must be off the charts., and he "kindly" offers mercies when his enemies are plainly outmatched by him, like:
Xykon: Bring the phylactery back, and I'll let you keep two internal organs of your choice. Act fast, this offer is for a limited time. (Fires a Meteor Swarm at the fleeing heroes)
Bozzok, head of the Greysky CityThieves' Guild has a friendly, easy-going personality that would lead one to think that he's the Noble Demon/ Reasonable Authority Figure type of Weird Trade Union leader. However, the reality is that Bozzok is a treacherous snake who pursues brutal retribution against anyone who challenges him.
General Tarquin, Evil Overlord of the Empire of Blood initially appears to be an Affably EvilNoble Demon, but the strip gradually shows that he's really this — a cruel egomaniac who takes Disproportionate Retribution on anyone who doesn't play according to his "rules", and whose facade of affability crumbles after things stop going his way.
Angelo, from Our Little Adventure. He's quite the little monster, but acts fairly polite and friendly most of the time. The main reasons he is so good to his minions are because they serve him on a pseudo-religious level and his husband Brian (whose kindess is quite a bit more genuine) advised him to.
Alaster Wight of Suppression treats everyone as his best buddy despite being a self proclaimed "sadistic badass bastard". He's got a smile that's equal parts Chesire and Slasher.
Alaster: Hey, buddy, since we got that sorted out, how about you just drive your stupid little bomb someplace else? (Beat) Oh right, I killed you. Well, that doesn't mean you can't make yourself useful.
General Levaughn Matsui "Hugo" Xinchub from Schlock Mercenary can carry on polite conversations, but still has no problems with murder and other mayhem to serve his goals, smiling at the thoughts of death and destruction that serves his purpose.
Devil in Sinfest can be veryfunny when he's in a good mood. And sometimes throws loud but harmless prima donna hissy fits or longrants, which sometimes has comedic effects too. Depending on the subject, his clownade can be more than sinister — still hilarious though, isn't? And when he's in a bad mood, there may be barely enough time to say "Oh, Crap!".
In Slightly Damned, we have Moonshade, who speaks in a polite manner but works with demons that are trying to abandon hell and take Medius as their own. He is a Sadist, who likes to taunt his victims mid-fight. This is best exemplified when Buwaro and Kieri accidentally run afoul of Melli, the fire guardian: he warns them that she's dangerous, says he's seen that they're good kids, and offers to take care of her for them; when he speaks to her, he starts out calmly, then stabs her in the shoulder mid-sentence, then, after he kills her, makes a snide remark:
Moonshade...Aaaannnd another Guardian bites the dussst! And with such a dramatic exit! So much for not setting the city on fire, though. Ha ha!
K'Z'K is almost always outwardly cheerful, as well as polite in a way that could be considered sarcastic, even though his actions are perfectly in line with his status as a demon bent on stealing souls and Taking Over The World to cause The End of the World as We Know It.
"Howdy-ho neighbors! Could we borrow the Book of E-ville, and all of your souls? Don't get up, we'll help ourselves!"
Subverted with Dr. Dastarde from "Anima — Revelation" on his first introduction. He's set up as potentially being the unknown villain behind the scenes, and his first line, while Finger-Tenting in a typical Diabolical Mastermind setup, is "We meet at last, Zoë! A Seer I've heard oh-so-much about! I am oh-so-happy for you to join us!" Also, he appears to have no anima hovering next to him — in this world, that would presumably mean being The Soulless. However, the next strip reveals he talks like that because he's really that childishly friendly, and his anima was just hiding in reflection of his own shyness. Since Zoë is the character whose point of view the reader has been following, she's pretty confused by the subversion as well.note This could also be a subversion of Affably Evil, but there are at least two reasons it fits here better in spite of the lack of further details. Firstly, the line is so over the top it sounds creepy and insincere. Secondly, the way this world works, it seems the only really evil people are always total psychopaths.
Tower of God: In the first season, Hansung Yu is always smiling and offering people instant coffee, but he's revealed to be both willing to manipulate however ruthlessly it need be for his ultimate goal... and just plain sadistic sometimes. The end of the second season and the beginning of the third start to show a different side of him, though. His younger self seems to have been more like just genuinely affable (and not evil).
Cal V1n of Weapon Brown is charismatic, enjoys jokes (especially his own), and is quite friendly. Up until he decides that you need to die. For any reason, including "because it would be funny", "because you're annoying", and "because I can". Even leaders of The Syndicate are terrified of him, for the simple fact that he's an unstoppable killing machine who only does what he's told due to some severe mental conditioning, and that is of questionable effectiveness. Part of this comes from the fact that he was transformed into a living weapon at the age of seven, and his first actions upon gaining his powers were to kill every other test subject. He was impossible to control without mental conditioning, and it's implied that the conditioning won't hold for very long.
Black Hat Man from xkcd, he has no qualms with killing and actively attempts to hurt and humiliate random strangers, but will calmly and politely explain why most of the time.
Yocchi from Yamara. There's hardly anything "redeeming" about her, as she happily plays villain, but... She manages to be so stylish and funny even in the To the Painsequence that even her victim doesn't seem to hold too much of a grudge, and after all, she herself is known to beToo Kinky to Torture, cheerfully crazy, andThe Chew Toy to boot, so it's somehow hard to blame her.
Chaotic Evil and no mistake. A dreaded, bloodthirsty pirate who does regularly Put the "Laughter" in "Slaughter", serves (nominally) an entity bent on Kill All Humans, tortures people in a variety of ways because he finds it amusing and generally brings chaos wherever he goes. Also capable of charming an old lady (whom he later kills), biding his time when an impatient associate wants to attack, right now! pranking people with a Stealth Hi/Bye (unnervingly often) and stopping a Rape, Pillage, and Burn to enjoy a cuppa at a local tea house... as the buildings around it burnt to the ground. His last act before dying was to save the life of one of the protagonists. Don't try to predict what Snow will do. He'll do something else.
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