These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Complete Monster: Starfish, the leader of the Red Berry Boys. He earns money by kidnapping people, vivisecting them, and using the available space to transport a magical substance in their captives' bodies. The process leaves its victims drifting in and out of consciousness in a constant state of pain. Recently, Starfish has made it a priority to target children for this procedure. He does so because his buyers pay him the same amount per body. By using smaller bodies he can stretch out his supply for extra cash. What this process entails is shown in gruesome detail with a little girl the readers see slowly dying on an operating table, having had most of her organs removed and then been abandoned when Starfish's lair was uncovered. When he's not motivated by greed, he is prone to partaking in horrific actions simply for his personal pleasure. When his mook, Ephsephin, has been wounded and is begging Starfish for a doctor, Starfish merely smiles and caves in his skull. He also betrays Quigley, an Antivillain who only signed up with Starfish so long as the captive children were set free once the job ended. Not only does Starfish renege on their deal and attempts to have Quigley killed, but he even states that his son Matty will also undergo the procedure.
"If you come into Unsounded thinking I want you to forgive Sette her foibles because she's so cute and because I've stuck her in the lead, you got the wrong idea. But it's my fault if they get the wrong idea 'cause I'm the one givin' out ideas! Some people just can't enjoy a heroine with the issues that Sette has. And I absolutely get that. Funnily enough people have short memories and when Murk was introduced it's like they thought here's another morally reprehensible character that Glass fatuously expects us to adore. But no, dorks, he's just a morally reprehensible character."
Ensemble Darkhorse: Duane's brother, Lemuel. So far he has only appeared in one chapter for two relatively short scenes, but readers have already started swooning over him and speculating about his role in the plot. It's possible that his similar appearance to Murkoph might have something to do with it.
In fact, when the Duane & Sette formspring was converted into a questionaire for Duane when he was alive, someone quickly took the opportunity to propose to Lemuel.
Hilarious in Hindsight: See Brick Joke on the main page. Now read that scene again. Imagine what it must seem to Duane — it's like having a swordfight with someone, and all of a sudden they pull out a dildo and act like it's a super-powerful secret weapon.
Iron Woobie: Duane is a devout member of a religion that believes that reanimated dead are the most absolute form of degradation imaginable and are irrevocably damned. He believes this completely and thinks that his God and nature have both rejected him, yet still keeps the faith and makes a point of being a decent person. The fans don't just eat it up, they would completely disregard his being a ragdoll arrangement of stitches, leather, bones, and rotten meat to smother him with hugs if they could manage it.
"But of course the day is not dark, and the future is bright and the past is a pleasant warmth behind me, so what a foolish thing to ask."
Memetic Molester: Starfish and Murkoph both get this treatment. Unfortunately in both cases it's pretty much canon, since Starfish has been confirmed by Word of God to be a child molester and Murkoph is heavily implied to have been a rapist and serial killer when he was alive.
Moral Event Horizon: Starfish crosses the line when he decides to use children for his procedure just so that he can earn extra money.
The Red Berry Boys kidnap people to cut them open and replace their insides with some kind of smuggled goods. They prefer children, because you get the same money for a smaller body, and the girls have yet to develop breasts that get in the way of the dissection. Duane's discovery of a dying little girl is probably the most disturbing scene in the comic to date.
Ever wonder why plods are always muzzled? Zombies are constantly, insatiably hungry: even reasonable ones like Duane go half-mad when exposed to blood.
Starfish's serene look as he's about to bash Ephsephin's head in with a wine bottle is just unsettling on so many levels. Really, Starfish himself is just abominable.
Sette goes into the room which she tricked Turas into entering, assuming Duane had tied him up or something. Hehadn't. Turas's blood and guts splatter the room, his intestines are hanging out, his rib cage is protruding from his flesh, and Duane is munching on one of his eyes. Also, Duane's face manages to reach Uncanny Valley levels due to his eyes. There's just something wrong about eyes that look so human, peering out from a face that's so ghoulish and wasted.
It's not that scary after initial exposure, but this page can make for one heck of a Jump Scare when reading for the first time. It stares into your soul.
What it was like for Duane when he 'woke up', so to speak: blind, constantly suffocating, choking on his own blood, and gradually beginning to crave the flesh of his beloved brother and wife.
The vivid description of Quigley's attempted suicide in Orphans:
The end of his dagger was dipped into one of the candles, the flame greeting the steel with a gentle caress. He stripped his vocal cords so he couldn’t scream. Then, when the blade began to glow, he pressed it hard across his marriage brand. Hot like her lips, like her forge in creation and in death, hot like the municipal office burning, like the woods burning in the night. So many fires, was it fair they always stopped just short of him? He swirled the dagger as his flesh split, vivisecting the insect (would Brother Hugh like to see?), pushing the blade deep until he smelled his own grease hissing. Press a little harder. Cut a little hole and let himself pour out of it, tipped like spoiled wine into the thirsty khert’s mouth. Wasn’t his heart hammering for it? Here it beat just below the steel, trying to excavate outward, stifled in the darkness by a cave-in. Let it out, let it out, let the khert fucking have it!
Comes with an addition of Tear Jerker, too, as he's destroying his marriage brand in the process.
While it is undoubtedly overshadowed by that hand, the top panel of that page is no walk in the park either. The Aldish sure do enjoy their Cold-Blooded Torture.
Tear Jerker: Sette's expression in this strip (spoilers). Especially when you consider something Duane said much earlier...
"I shall one day make her weep for someone other than herself."
Also, this scene, where Jivi desperately begs Matty for help, only for him to find out that his father's in collusion with the Red Berry Boys.
Everything about this strip.Matty frantically wailing that Quigley can't die because he still has five years of life left, being Forced to Watch because Chitz can't be turned off (note also that he's desperately trying to close his eyes...), and the first thing that Quigley does upon waking up is to scream Matty's name...
Everything from chapter 7 pages 102-108. Mikalia uses pymary in an attempt to save her father from assassins, and gets a sword through the heart as a result. This is the last thing Duane sees before he's knocked unconscious and brought to the brink of death. Then he is about to cross into the khert with his daughter, but right as he does so the door shuts in front of him. And the first thing he gets subjected to upon regaining consciousness? A spike through the eye.
Chapter 8 page 39's last panel shows some of the aftermath. It's a small detail, but you can see Will hanging his head as he leaves the funeral...
Duane regains consciousness and see Sette on the floor and just says "Not this" repeatedly. He tries to check for her pulse, but can't because of his fingers, but eventually hears her heart beating.