A quick caution before we dive in. If you haven't read the book yet, a few of these images veer a bit into spoiler territory, so you might want to finish reading first if that makes you crazy.
Mrs. DeVore
Completely generated by Midjourney. The prompt used was "old woman in wheelchair, attractive, wearing sunglasses, angry, realistic".
Fire at the Revival
Combination of two images from Midjourney. The prompts used were "circus tent full of people on fire, realistic" and "tent revival with people on fire".
Boy in the Bushes
Entirely from Midjourney except for the logo on his shirt, which is from Deposit Photos. The same prompt was used for both. "small boy wearing a white t-shirt with red hair and electric blue eyes hiding in bushes, realistic, dramatic".
The Creeper
This one was included more for mood than accuracy. This doesn't look much like the Creeper from the Jeepers Creepers movies, but it also evoked the Void, which is an even bigger threat to their existence. This is entirely from Midjourney, combining two prompts and a minor edit. The first very simple prompt got everything but the school bus "jeepers creepers monster attacking." The second prompt was "schoolbus in a cornfield at night, spooky, realistic." The edit was taking out a third leg...as usual, editing mostly involved adding or removing appendages.
Jelabiah
This is one of Zophiel's counterparts on the "angelic" Council of Seventy-Two. Entirely Midjourney, with a single prompt: "angry elderly native american woman wearing feathers, holding arms out, realistic, glowing red inside a dark room."
Andras
Entirely Midjourney with a single prompt, except for color correction on the eyes: "man with crow's head realistic dark fantasy."
Daisy in the Nexus
Entirely Midjourney with a single prompt, except for color correction and addition of the left hand. Prompt: "18-year-old girl with straight dark hair standing at the edge of the universe, realistic."
Werewolf Fight at the Police Station
Entirely Midjourney except for police car, minor color correction, and correction on the word POLICE on the building. Prompt: "werewolves fighting in front of a small town police station, night, realistic."
Zombie Carly
Entirely Midjourney except for piano keys. Prompt: "alluring zombie, black woman, side view, sitting inside a piano photo realistic."
Bael, King of the Demons
Entirely Midjourney. Prompt: "demon with the face of a frog wearing a crown realistic."
The Council of the Infinite
The Council is only alluded to, never actually seen or described in the book. But this one was so quirky and surreal that we had to include it. So...now you know something that (hopefully) the characters will never see for themselves. Prompt: "the council of the infinite inside a crystal ball realistic."
Jill
This combines two prompts and minor color correction. Prompts: "middle-aged woman with blond hair and electric blue eyes, realistic, in a forest at night" and "police suv realistic."
The Grimshaw House in the Nexus
Entirely Midjourney except for the orange streak. Prompt: "realistic haunted victorian house with blue lights in outer space."
Dani Gray at the Cabin
Midjourney except for the arms and the Haddonwood Howlers logo, plus some minor color correction. Prompt: "an 18-year-old girl with dark blonde hair wearing a blue and gold cheerleader uniform, full body, in a dark forest, photo realistic."
Pink Raccoon Slippers
Midjourney except for removing one eye and minor color correction. Prompt: "a pink raccoon slipper lying on the forest floor, dark, realistic"
The Jesus Feet Window
Midjourney except for minor blending. Prompt: "stained glass window of Jesus's feet wearing sandals, photo realistic"
Daisy in the Nexus Part Deux
Entirely Midjourney. Prompt: "18-year-old girl with straight dark hair and green eyes standing at the edge of the universe, realistic"
Chase in the Nexus
Entirely Midjourney except for some color correction and the addition of Chase's neon orange sneakers. Prompt: "ghost of a 12-year-old boy sitting in a corner inside a haunted house, electric blue, realistic"
Tucker in the Oculus Mirror
This one is very much a hybrid. After multiple tries, Rysa gave up on trying to get anything close to an accurate render of Tucker holding a gun. The mirror is generated by Midjourney, the rest was created with two stock images from Deposit Photos. Prompt: "ornately carved wooden mirror scary oculus"
Werewolves in the Theater
Combination of two Midjourney prompts: "werewolves in a movie theater, realistic" and "werewolf front view realistic."
The Demon Shax
Midjourney except for the necklace of eyeballs. Prompt: "giant stork demon wearing a necklace made of human eyes realistic."
Mr. Giggles
Midjourney except for corrections to face and trimming some extra long branches: "scary giant scarecrow, photorealistic."
Electric Blue Ball
Entirely Midjourney: "small electric blue ball of energy flying through the forest, photo realistic."
Chase and Raum
Midjourney except for minor color correction on forehead: "twelve-year-old boy, realistic, with eyes that are electric blue and gold."
Aali and the Werewolves
Midjourney except for minor color correction and addition of missing left arm. Prompt: "realistic werewolves chasing young black girl wearing a frilly pink dress, small town, main street, with black void in background."
Luke at the Werewolf Fight
This one was complicated, but it's entirely Midjourney prompts. Four prompts: "werewolf full body, wearing red underwear, realistic," "werewolf front view realistic," "a rock tied inside pink sparkly fabric," and "small town main street with movie theater photo realistic." Some minor color corrections on the last one and a few extra minutes to get rid of the snow.
Daisy in Midair Over Haddonwood
Basic image is Midjourney, but I added arms, straightened legs, and got rid of a few extraneous power lines. Also minor color correction. Prompt: "seventeen-year-old girl in jeans hovering in the air above a small town main street, full body, twilight, photorealistic."
Zophiel
This one was all Midjourney. Didn't even do any color correction. Prompt: "angry angel glowing amber against a night sky."
Chase Entering the Arena
Fixed his arms, along with color correction. Prompt: "twelve-year-old boy, full body in short-sleeved shirt, walking through a parking lot filled with cars and shattered bodies, photo realistic."
Chase and the Snowglobe
Combined two Midjourney images with image of hands from Deposit Photos. Prompts: "teenage boy with dark hair and blue eyes holding a crystal ball" and "many angels and demons fighting inside a crystal ball realistic."
A Field of Flowers and Butterflies
This one is 100% Midjourney. Prompt: "field of flowers with butterflies."