This isn't quite polished or finished, but I'm just curious what people think about the violence and erotic concepts. Also, I know almost nothing about fandoms, so maybe people will have some pointers on those aspects as well. Here is a reference pic for the scene.

1. The Downfall of Wonder Woman

With some difficulty, Diana pushed herself off the cement, coming first to a knee and standing up. Before she could fully get her bearings, Darkseid rammed the ancient blade into the small of her back, just above her ass. Bloody silver and crimson exploded from her lower stomach, causing her to arch violently and let out a blood curdling scream at the sky. Groaning, she looked back down and blinked, her mouth opening wide in shock at the impossible sight - a blade protruding from her flesh, shining with her own blood. She looked up and beheld the crowd for a moment, her brow furrowing in confusion as her sudden defeat was reflected in their expressions. She went to grab the blade with quivering hands—

SLICE-CRUNCH!

Darkseid yanked the blade up, carving her vertically up the stomach until the sword was lodged at her sternum. Diana's eyes went wide with shock. Her body tensed and she let out a deep gurgle as her insides were eviscerated beyond her capacity to heal. She clutched desperately at her carved up abs. Darkseid’s hand wrapped around her throat from behind and he whispered in her ear.

“So ends the Amazon queen.”

Feeling her strength sapped and her bodily functions failing, Wonder Woman could only shudder and gurgle as Darkseid licked her cheek.

Her hands shot up briefly and clawed at Darkseid, smearing her own blood on his face, but just as quickly they collapsed to her sides. Then, he violently unsheathed the sword from her body and backed away, leaving her stumbling forward toward the crowd.

Hands over their mouths, and some blocking their eyes, the crowd was in shock at the sight of their beloved heroine staggering toward them, a bloody gash all the way up her bare torso. She opened her mouth to speak or to scream, but only blood poured over her lip instead. Diana’s soul was to never surrender, but her mind was collapsing.

“N-nno...” she groaned as she collapsed to her knees and wobbled.

The sound of Darkseid’s footsteps came close behind her.

She thought of her mission to defend humanity, and of her sisters who would try to avenge her.

“The Amazonian bitch doesn’t want to die,” Darkseid muttered, admiring her in his own condescending way.

A sense of doom welled up within Diana's bosom, and her lips quivered even as she choked out her words.

“You… w-will nnnever… wi—”

SHLUNK

Darkseid swung his blade right through her throat from behind, decapitating her in one blow. Her arms reflexively bent up at the elbows and her hands spasmed while her severed head spun at an upward angle. Her hair twisted in the air until her head landed with a soft thud on the ground, rolling toward the crowd. As her head rested on its side, onlookers could see her eyes and mouth briefly widen silently, until both slackened and blood oozed copiously from her neck.

The energy in the rest of her body lasted only a moment as her arms dropped again and her torso slumped and collapsed to the ground, pouring more of her blood into the earth.

Such was the ignoble defeat of the famed Wonder Woman, protector of Earth and inspiration to all women.

2. Wonder Woman's Ultimate Comeuppance

In life, Diana of Themyscira had been a symbol of female power and the triumph of good over evil. In death, she was to be a symbol of inevitable comeuppance for all who would challenge Darkseid. Taking advantage of the Amazonian body’s resistance to decay, Darkseid put Diana’s severed head and body on display. His sorcerers constructed an impenetrable Infinity Capsule with two transparent compartments. In the lower compartment, Diana’s body from the neck down would hoisted up taut on a spike running from her vagina through her neck. In the upper compartment, her decapitated head was impaled upon perhaps the cruelest invention of all - a perpetual life support machine that could control the mind. Using the Amazonian’s own healing and cloning technology, Darkseid’s sorcerers made Diana’s brain cells repopulate and her consciousness re-animate so that she would relive her final moments in perpetuity.

DARKNESS. A flicker of light. Blurry shapes, distorted and surreal, swirled in and out of focus. A rush of disorientation floods her senses, and Diana of Themyscira struggles to process her surroundings.

PAIN. A dull, throbbing ache pulses through her head. She tries to move, to speak, to scream; her mouth opens, but her body is unresponsive.

CLARITY. The room comes into view, a sterile and transparent chamber filled with a metallic smell. People dressed in unfamiliar garb gather around the transparent display, their faces a mix of disgust and morbid curiosity. They point and whisper, their eyes widen with fascination. Some take pictures.

Her eyes rise, and she looks across the room.

DENIAL. Disbelief washes over her. This can't be real. She can't be staring at her own headless body. She can't be seeing her lifeless torso displayed like some grotesque exhibit, suspended in a museum display looking freshly eviscerated. It has to be a nightmare! A cruel illusion! But no matter how hard she tries to wake up, the nightmare persists.

HORROR. Terror grips her mind as the device lodged in her brain floods it with an intense flashback of her impalement and decapitation. Her eyes widen in crazed bewilderment.

ANGER. Fury surgeS within her, she curses Darkseid in her mind, curses his cruelty and his evil. She irrationally vows vengeance, thinking of her sister.

She doesn't know they've been dead for two hundred years.

DEFEAT: As the cycle repeats millions of times over decades and centuries, her mental integrity disintegrates at a snail's pace. Each time she sees her own headless body, and the crowds looking upon her more as specimen than heroine, a part of her slips away.

DEATH: The darkness encroaches. It swallows all over again, but never to sleep.

Earth Exhibit 234: “The Fall of Wonder Woman”

[Reference pics here, here, here, here, here, here]

Plaque Description: Witness the demise of the so-called "Wonder Woman," a female paragon that humans looked to as a symbol of justice and strength until her demise in Earth Year 2035. Defeated by the might of Darkseid, she now serves as a cautionary tale to all who would oppose Him. Those who stand against Darkseid, on any planet, will meet a similar fate, their strength and defiance ultimately futile in the face of His supremacy.

Viewing Narration: As you can see, Wonder Woman initially displays confusion at her situation. This is a clear indication of her inability to even conceive of her own defeat. Notice how her expression shifts to shock and disbelief as her stubborn mind processes her predicament. Only then does the Infinity Chamber force the memory of her death into her mind. You see her sudden expression of unmitigated horror, evidenced in the widening of her eyes and mouth. Some say this moment is a simulacrum of the erotic; it is the moment when Darkseid truly penetrates her reality. Then, despite her unambiguous defeat, her eyes flair with defiant rage. This futile resistance only serves to underscore her fundamental irrationality and arrogance. Finally, observe how her expression inevitably transitions to acceptance and defeat. This is her true self, acknowledging the justness of her own comeuppance and submitting to the power and dominion of Darkseid.

The End

Some other concepts I have involve:

Defiant press conference - reference pics here, here, here

News coverage - reference pics here, here, here, here