Ashley Wilson's hallucination of her face melting in "Bewitched?"
While the demons in the same tract are little more than mouthpieces for Jack Chick's bizarre views and conspiracy theories, their appearances are distinctly discomfiting. With faces like melting wax, they look like they could fit in well on a psychological horror movie, if they would just stop ranting about ecumenism.
At the end, Satan actually seems threatening when he threatens an underling who failed to keep Ashley from being saved:
—I have ways of making you really sorry.
In "No Fear?":
After Lance commits suicide and his friend Dolly is saved from the same fate by converting to fundamentalist Christianity along with her sister, they just forget about him, as if they're happy that they didn't end up in hell like Lance, who has just burned up and vanished into "the darkness outside". Seriously, they have no respect for the dead or even visit them, which brings out the "Christian" message that people should only care about themselves and forget about others if they die heathens.
Lance has a fairly terrifying scene in Hell. First his leg catches fire, then his entire body is ablaze, then the scene fades to black with only his screams. This time, Chick didn't settle for people falling into Hell and/or the Lake of Fire, or surveying their new surroundings in despair, but actually showed what it's like to burn alive.
A probably unintentional example of nightmare fuel occurs in the same tract, when a cat turns its head around like Reagan from The Exorcist to look at two demons outside of a window. While this is probably just a poorly executed drawing, the cat doesn't look like something that you would want to meet in a dark alley.
Some of the tracts are a little jarring, like "The Thing", especially the final.
Satan's appearance at the end of Somebody Goofed and Oops! He has this weird mix of positively goofy and grotesque that manages to somehow combine into disturbing. While the dialogue's ridiculous, the face sure isn't.
The nightmarish cherry on top of the sundae of fear: this is somebody's actual beliefs. Jack Chick is totally serious.
"Lisa," and the thought that someone somewhere may actually believe that raping your elementary-school-aged daughter and sharing her with a neighbor - oh, and also giving her herpes, apparently - is something that can be fixed with a little prayer. If Jack Chick's monstrous interpretation of God would forgive that so easily, then why not just hang with Satan? Or the Papal Conspiracy?
Because they don't want to be forgiven.
It's not just that everything is fixed because you tell Jesus you're really sorry, but in Jack Chick's world there's no real problem with raping your children as long as Jesus stops you in time. It takes more than just four or five months of regular gang rape before they get hurt from it. (Except for the herpes.)
The entire "The Sky Lighter" tract. Especially considering the fact that it is Abdulla's own grandmother who is trying to get him to blow himself up. And the fact that Abdulla blows himself up- and everyone else around him. Imagine surviving that and becoming deformed- or just witnessing it. And just the concept that the Deity who is supposed to love you would actually want you to do something so horrible. No wonder Yusuf is the only sane man in the entire tract.
There's also the fact that she doesn't bat an eye when her daughter-in-law dies in childbirth, and is merely annoyed that her husband failed in his suicide bombing mission. Imagine growing up in or marrying into a family that sees you as expendable.
The whole concept of a God that tortures people forever if they do arbitrary things like celebrate Halloween or play Dungeons & Dragons or simply doing missionary work to help improve people's lives without forcing religion down their throats.
Made all the more disturbing in that the author apparently thinks that his interpretation of God is "benevolent".
Godís behavior in "Uninvited" is even worse. According to the comic all homosexuals are the way they are because they were posed by an evil spirit after being raped/ molested. Chickís version of God sending people to hell for something that was forced upon them. A benevolent God, indeed.
That photograph on the main page is kind of unnerving too the longer you look at it...
The atrocious art means that even totally innocent things (kids' faces, pets, etc) frequently lapse into Uncanny Valley territory without meaning to. And don't even get started on the actual demons...
Sure, Dark Dungeons was really bad, but it still had some creepy things like the image of Marcie's body hanging from the ceiling after she committed suicide or the Dark Dungeons' GM's Villainous Breakdown when Marcie wants to quit.
And it's highly implied that Marcie committed suicide in front of Debbie. No wonder she spends the rest of the tract in a Heroic BSOD.
This one, which talks about the end of the world, has a picture of a man outside of his car being pulled up towards heaven, with the caption, "You never know when your time is up." Think about that for a second. Imagine you're in your home, and suddenly you get pulled towards heaven against your will, never to return to Earth again.