This was made with a local install of Reforge using the model StableMond: https://huggingface.co/Xeno443 . I'd recommend any or all of the 'Mond models, they're all some of the best furry SDXL models.

I used Tail Tagger for tagging assistance: https://github.com/renfald/tail-tagger . Along with the JPT-3 model for AI generating tags: https://huggingface.co/RedRocket/JTP-3/tree/main/models?not-for-all-audiences=true

In the shadowed ruins of an ancient Echidna temple on Angel Island, where crumbling stone walls whispered secrets of forgotten wars and the air hung heavy with the earthy scent of moss and decay, Knuckles the Echidna stood triumphant. The Master Emerald's distant hum pulsed like a heartbeat through the ground, but tonight, its guardian had claimed a different kind of victory. The floating island's isolation had always been his sanctuary, but now it served as the perfect hideaway for this forbidden tryst. Sweat glistened on his red fur, his massive muscles rippling under the dim torchlight that flickered from cracked sconces, casting long shadows that danced across his chiseled abs and broad chest. His white crescent mark glowed faintly, a symbol of his unyielding strength, and his spiked gloves clenched as he looked down at the two pink-furred echidna females kneeling before him—Julie-Su on his left, her cybernetic arm humming softly with residual energy, and Lien-Da on his right, her latex bodysuit creaking with every subtle shift.

The air was thick with the musky aroma of arousal, mingling with the faint metallic tang from their cybernetic enhancements and the salty sweat of exertion. Earlier, the three had clashed in a heated sparring match—Julie-Su, ever the loyal soulmate, testing Knuckles' defenses with her proton gun and martial prowess, while Lien-Da, the scheming half-sister, had joined in a rare moment of alliance, her electric whips crackling through the air. But the fight had devolved into something primal, their bodies colliding not in combat but in heated friction, until Knuckles' raw power overwhelmed them both. Now, defeated and enthralled, they submitted, their breaths coming in hot, ragged pants that echoed off the stone.

Knuckles smirked, his violet eyes narrowing with smug satisfaction as he flexed his arms behind his head, his dreadlocks swaying like crimson banners. His enormous cock, thick as a forearm and veined like twisted ropes, throbbed erect before them, jutting out from his furred groin with an intimidating length that nearly reached his knees when flaccid—but now, fully aroused, it stood proud at over a foot long, the pinkish-red shaft glistening with a sheen of precum that dripped lazily from the flared, mushroom-shaped head. Below it, his balls hung heavy and swollen, each the size of a ripe grapefruit, covered in soft red fur that couldn't hide their pendulous weight, swaying gently with every pulse of his heartbeat. The scent of his masculinity was overpowering—a heady mix of sweat, musk, and that unique echidna spice, like cinnamon laced with raw earth.

"Oh, Knuckles," Julie-Su purred first, her voice a husky whisper laced with awe as she leaned in closer, her pink tongue flicking out to trace the underside of his massive shaft. Her flushed face, framed by her spiky hair, was inches from his throbbing length, and she could feel the heat radiating off it like a forge. "You're so fucking manly... look at this cock, it's huge, bigger than anything I've ever seen. And these balls—god, they're so full and heavy, like they're packed with enough cum to flood the entire island." She nuzzled her cheek against one of his orbs, feeling the soft, warm fur tickle her skin while the weight pressed against her, the faint salty taste lingering on her lips as she planted a wet kiss there. Her cybernetic dreadlock antenna buzzed faintly, as if syncing with his chaotic energy.

Lien-Da, ever the opportunist, chuckled throatily on the other side, her sharp blue eyes gleaming with a mix of resentment and lust as she mirrored her half-sister's actions. Her long, wavy dreadlocks cascaded over her shoulders, one cybernetic strand glowing with a faint red light that matched the hue of Knuckles' fur. "Mmm, she's right, you big brute," Lien-Da cooed, her voice dripping with seductive venom, as if praising him was both a concession and a thrill. "You're the epitome of manhood—those muscles, that glare... but this cock? It's a monster, thick and veiny, pulsing like it's got a life of its own. And your balls, oh fuck, they're enormous, swinging like pendulums ready to unleash a torrent. I could worship them all night." She extended her tongue, long and agile from years of Dark Legion training, to lap at the base of his shaft where it met his sack, savoring the musky flavor that exploded on her taste buds—salty, tangy, with an undercurrent of sweetness that made her thighs clench.

Knuckles grunted in approval, the deep rumble vibrating through his chest like distant thunder, sending shivers down their spines. "That's right, girls. You've both been feisty today, but now you see who's in charge." His voice was gravelly, commanding, with a hint of that gullible charm buried under layers of dominance. He reached down with one gloved hand, gripping Julie-Su's head gently but firmly, guiding her tongue along the length of his cock. The texture was exquisite—velvety smooth skin stretched taut over iron-hard flesh, ridges of veins pulsing under her licks, each one eliciting a bead of precum that she eagerly slurped up. It tasted like liquid fire, salty and viscous, coating her mouth and making her moan softly, the sound muffled against his girth.

Julie-Su obliged, her hands— one flesh, one metal—reaching up to cradle his massive balls, feeling their heft in her palms as she massaged them gently. The fur was soft, damp with sweat, and beneath it, the skin was hot and yielding, the orbs churning with pent-up seed. "Fuck, Knuckles, your balls are so big... I can feel them throbbing, full of that hot cum just for us. You're such a stud, guardian of more than just the Emerald." She dipped lower, her tongue swirling around one ball, sucking it partially into her mouth with a wet pop, the suction pulling a growl from him. The taste was intensified here—muskier, sweatier, with a hint of the island's wild herbs from his fur. Her nostrils flared, inhaling deeply, the scent making her head spin as her own arousal dripped down her thighs, soaking the crotch of her teal outfit.

Not to be outdone, Lien-Da pressed in from the right, her latex-clad body rubbing against Knuckles' leg, the material squeaking erotically against his fur. "Yeah, big boy, let me show you how a real Legionnaire handles a weapon like this." She licked a long stripe up the side of his cock, her tongue tracing a prominent vein that twitched under the pressure, while her gloved hand hefted the other ball, squeezing just enough to make him hiss in pleasure-pain. "These nuts are gigantic— I bet they could crush a Dingo's skull, but right now, they're all mine to savor. So manly, so virile... you're built like a god, Knuckles." Her words were punctuated by slurps, her mouth enveloping the tip briefly, sucking off a fresh drop of precum that oozed out, thick and sticky like honey, filling her senses with its potent flavor. The sound of their combined licking filled the air—wet, sloppy smacks and sighs, echoing in the ruins like a profane ritual.

Knuckles' breath came in heavy puffs, steam visible in the cool air as his body heated up, his Chaos-infused strength making every sensation amplified. He could feel their tongues working in tandem, Julie-Su's gentle yet insistent laps contrasting with Lien-Da's aggressive, teasing flicks. The touch was electric—hot, wet mouths gliding over his sensitive skin, sending jolts straight to his core. "Keep going," he commanded, his free hand tangling in Lien-Da's dreadlocks, pulling her closer until her nose buried in the fur at his base, inhaling his overpowering musk. "Praise me more. Tell me how much you need this."

Julie-Su pulled back momentarily, strings of saliva connecting her lips to his glistening shaft, her eyes hazy with lust. "We need it, Knuckles—your huge cock is all I can think about. It's so thick, I can barely wrap my tongue around it, and your balls... fuck, they're swelling even more, ready to explode. You're the strongest, manliest echidna alive." She dove back in, her tongue joining Lien-Da's at the head, their tips swirling together in a messy kiss around his slit, tasting each other mixed with his essence. The combined heat of their breaths warmed his skin, and the visual—two fierce warriors reduced to worshippers—made his cock twitch harder.

Lien-Da smirked against him, her electric whip forgotten on the ground, replaced by the thrill of submission. "Mmm, yes, master guardian... your manhood is legendary. This cock could split me in half, and these balls? They're like treasures, heavy with cum that's going to paint us white. You're unstoppable, so fucking huge." She sucked one ball fully into her mouth, rolling it with her tongue, the vibration of her hum sending waves of pleasure up his spine. The taste was addictive—salty skin, furry texture, and that underlying spice that screamed raw power.

As they continued, their hands explored further—Julie-Su's cybernetic fingers tracing patterns on his inner thighs, cool metal contrasting his feverish heat, while Lien-Da's nails scraped lightly over his abs, drawing out more grunts. The ruins seemed to close in, the air growing thicker with their moans, the scent of sex overpowering everything else. Knuckles thrust his hips slightly, fucking their faces in shallow motions, his massive length sliding between their tongues, coated in a sheen of saliva that dripped onto the stone floor with audible plops.

Hours seemed to pass in this erotic haze, but time blurred on the island. Julie-Su and Lien-Da traded positions, licking every inch— from the bulbous head, where precum flowed like a faucet, to the heavy sack that slapped against their chins with each bob. "More," Knuckles demanded, his voice strained. "Worship it all."

"You're our king," Julie-Su gasped, her mouth full.

"Biggest cock ever," Lien-Da echoed, lost in ecstasy.

And as the Master Emerald's glow intensified in the distance, mirroring the building climax, the trio descended deeper into their primal ritual, senses overwhelmed in a symphony of touch, taste, sound, scent, and sight—bound by lust in the heart of Angel Island.