Never though I'd get around to actually making a Helluva Boss story, even if it's a crossover, but here I am making one. I mean, I didn't take much interest in either Helluva Boss or Hazbin Hotel until a couple of months ago when I heard about it, and decided to see what it was about. So I watched both shows and I'm really glad I did.

So, it was only a matter of time until I felt like making a story about either one of them, and it just so happened to be Helluva Boss. Though, that is the first one that I watched, so it felt fitting and right.

But anyway, welcome to Helluva Spawn, a Helluva Boss/Spawn crossover featuring my OC Nathan Nolan AKA Spawn getting involved with the I.M.P. crew in their business of killing humans. And as time passes, Nathan finds himself falling in love with Loona, and later Verosika Mayday. yeah, this is an OC x Loona x Verosika Mayday pairing.

This will have the themes you expect with Helluva Boss and Spawn, though the seriousness from the Spawn side will be maintained. I mean, do you see anything humorous or comedic about that guy?

Author's note on 26/10/2024: Okay, so I've rewritten the first chapter and made it that, instead of it all being in one universe, it's going to be the classic trope of 'OC winds up in another world' type of thing. So in this, Nathan Nolan/Spawn achieved the same thing Al Simmons did in the comics. Killed Malebolgia, defeated God and Satan, gained the power to change Hell, Heaven and Earth, all that kind of stuff. I did this because I feel it would be more interesting if the Hazbin Hotel/Helluva Boss world had NO FUCKING CLUE what Spawn is, which would up the threat level he can pose to the system Hell has.

Disclaimer: I do not own Spawn or Helluva Boss. I only own the OC Nathan Nolan/Spawn.


"In the beginning, there was chaos, and from it, he emerged-a broken soul, forged by anger and vengeance. Nathan Nolan, once a man, became something more-Spawn, Hell's reluctant warrior and Heaven's greatest threat. Against the forces that sought to bend him, he rose. He fought, he bled, and he conquered. He tore the balance of power from the hands of both Heaven and Hell, not out of ambition, but necessity."

"With his chains and cloak, he laid waste to those who would dare control him. Malebolgia fell by his hand, and the Devil himself was cast down. And then, in an act that shook the very foundations of creation, Spawn did the unthinkable-he imprisoned both God and Satan, sealing them in a timeless abyss where neither could exert their will upon the world."

"For a time, he ruled over both Heaven and Hell, a reluctant king upon a throne forged from the broken bones of those who had sought to subjugate him. In his hands, the divine and the damned bowed. Angels and demons alike feared the shadow that cast itself across their realms. And with a singular will, he brought order to the chaos, reshaping the very fabric of existence according to his vision."

"But power is a double-edged sword, and the weight of it bore down upon him. For how could one build a paradise when burdened by such pain, by memories that claw at the soul? In the end, he found no solace in dominion. So he relinquished it all-Heaven, Hell, and the Earth he had cleansed and rebuilt-and walked away, seeking neither reward nor rest, only silence."

"Yet, the story of Nathan Nolan, of Spawn, does not end there.

"For even the most scarred warrior deserves to know peace. Even the most tormented soul deserves to be content. And what better way to heal a broken man than to give him a purpose beyond himself?"

"And so, he was brought here, to a place teetering on the brink, where demons and angels alike tread the path of shadows. Not by his choice, but by design-a design that seeks not only the salvation of this universe but perhaps his own as well."

"Watch now, as the tale begins anew, in a world not unlike his own, but filled with potential and peril alike. This is the story of Spawn's journey in a Hell not quite like the one he left, but not too different either.

"For I am the Mother of Existence... and I give shape to all worlds."


Within Pentagram City, it was in the middle of an Extermination to deal with the overpopulation in Hell. The Exorcists, Fallen Angels, the more violent forces of Heaven's legions were killing demons left and right as they reveled in their killing spree.

Within the slaughter, a group of exorcists were killing off any remaining demons that lingered in the area as one let out a sigh and chuckled. "Best Extermination Day ever. How many do you think we've killed this time?" She asked her fellow sisters as they stabbed any demons that were trying to escape.

"Who can tell? I lost track since the last Extermination." One of them said as she cleaned her blade.

"If anyone is keeping track, it's Lute. She's memorized every kill count ever since she first joined the legion." Another Exorcist explained as she twirled her spear.

A chuckle came from the next Exorcist as she looked at her sisters. "At least we managed to reduce the population a lot more than last year." She expressed with a smirk, only to look up towards the sky and notice the brilliant light that suddenly appeared in the sky as she pointed at it. "Look there!" She called out as the exorcists turned out and saw the light.

Upon seeing it, the light grew bigger and bigger as it hurled towards the city. One of the Exorcist's eyes widened upon seeing it as she turned towards her sisters. "TAKE COVER!" She cried out as the light crashed in the area where they stood.

The impact shook the entire city. Windows shattered, and buildings trembled, but the light itself dissipated almost instantly, leaving nothing but a faint, shimmering mist where it had struck.

The silence that followed was deafening. The Exorcists etched closer as the mist started to clear away and reveal something that had the eyes of the Angels widen in a mix of awe and disbelief.

There, in the middle of the street, was a figure, kneeling amidst a crater of cracked asphalt and dust.

The silence hung in the air, heavy and expectant, as the dust slowly dissipated, revealing the figure at the center of the impact. He knelt motionless, shrouded in the remnants of the crater, his silhouette stark against the fractured street.

"What is that?" One of the Exorcists asked warily, gripping her spear tightly.

Another one grinned. "I think we've got another Sinner to exterminate, girls." She announced, making her fellow sisters cheer.

"Let's slaughter it already!" One cried out, striding towards the motionless figure who remained crouched. "Hey, demon filth! Look at me! I want to look into your eyes when you-HURK!" She was cut off when, in almost a blink of an eye, the figure had grabbed her by the throat so tightly that she was choking. But it made the figure stand up to his full height and reveal his appearance to the Angels as well as some demons that had been watching from their hiding places.

The figure stood tall, towering over the gawking demons and angels. His presence was commanding, exuding a raw, palpable power that sent shivers down their spines. He was clad in a suit that seemed to drink in the light around him-a living darkness that wrapped around his form like a second skin. The black fabric was segmented, molded to his body with a sinuous, almost organic texture, highlighted by bold white patterns that slashed across his torso in the shape of a menacing V.

A crimson cape billowed out from his shoulders, its tattered ends whipping in the faint, sulfuric breeze like the wings of some great, nightmarish creature. It moved with a life of its own, shifting and coiling, giving the impression that he was cloaked in blood and shadows. Heavy chains, their links thick and jagged, draped across his chest and hung loosely from his arms, clinking softly with each subtle movement. They seemed to pulse with a dark energy, as if straining to break free, to lash out at anything that dared to come too close.

His face-or what passed for one-was concealed behind a mask of bone-white and black, its features set in a permanent snarl. Fiery green eyes glowed from within, radiating an eerie, unholy light that pierced through the gloom. Those eyes were the only part of him that seemed alive, burning with a fierce, unyielding will. They swept over the onlookers with a gaze that was both scrutinizing and dismissive, as if weighing their very souls and finding them lacking.

"Hey! let her go!" One of the Fallen Angels shouted, glaring at the figure while aiming her spear at him.

The figure looked at the Exorcist he had in his grasp, looked her over for a split second, then clenched his grip tightly and the Exorcist let out blood-curling screams as she was set ablaze with green fire, very unlike Hellfire, and soon was reduced to nothing but cinders and ashes, leaving the Exorcists and the watching demons shocked.


No one ever expects the day when their lives are forever changed. There are some of those who try to reject and fight it, and then there are those who welcome and embrace it. It usually depends on whether the change is good or bad, but neither assures what the reaction will be. They either reject or welcome it by what they endured through in the past or what they might be preparing for in the future.

For Nathan Nolan, everything changed the day he and his family were murdered by scumbags and he made a deal with a demon to become a Hellspawn to get his revenge.

People should forget what they think they know. Hell is real. There are no words that can describe it. Movies that retell the horrible stories of this accursed place could never hope to do it justice. It is a place beyond human understanding. It goes beyond concept and thought. If a human were to gaze upon it, weak of mind and spirit, their eyes would surely boil and burst into gooey remains.

Heaven is real. It is a paradise that one cannot begin to comprehend. A shining city among the stars, celestial hosts flying about and bringing order to it. However, such grand splendors are not without dark reflections. In the reflection, a dark face is revealed. One veiled by beautiful concepts such as "justice" and "righteousness." What mere mortal could ever hope to comprehend the minds of such great beings who perverse these meanings?

Demons are real. Angels are real.

And Nathan Nolan was an enemy of both Hell and Heaven.

Heaven hunts him.

Hell hates him.

All of Creation would care not if he lived or died.

That was just fine with him, because he didn't care about them as well.

He was a soldier. A husband and a father. And when he died alongside his wife and kids, he made a deal with Hell; become the general of the demon's armies and a Hellspawn, and in exchange he will get his revenge on the ones responsible for killing him and his family. Nathan very much agreed to those terms.

The things people will do for love.

And even when Nathan got his vengeance and avenged his family's deaths, he was left with nothing but the darkness that now dominated his life. There was satisfaction at the fact he had avenged them and that they could now rest... but he would never join them in Heaven, for it repulsed his kind. For he was of Hell, not of Heaven. He would never be allowed in Heaven, never allowed to join his family in the afterlife.

And for Nathan, what else was there for him to do?

Kill the demon he made a deal with and regain his soul. It would at least grant him some redemption.

And he succeeded.

He killed Malebolgia, killed any demon that got in his way, and regained his soul while keeping his Hellspawn powers. He defeated God and Satan themselves, he had the power of the Universe at his grasp and used it to reshape everything to his own liking. But in the end, he gave it all up.

And now, he found himself in an entirely new situation.

Spawn's gaze turned from the ashes of the Fallen Angel he had burned, glanced over the others, over the demons, then took in the rest of his surroundings.

From the scent of the air alone and the color of the sky, Spawn already knew where he was. Hell. He didn't need to see the twisted spires of Pentagram City or hear the distant screams and laughter of the damned to recognize it. The acrid, sulfuric tang clung to his senses, the kind of stench that burrowed deep into the memory, never to be forgotten. The sky overhead was a sickly, unnatural red, churning with dark clouds that crackled with flashes of eldritch lightning. It was a vision straight out of the worst nightmares-one he had lived through before.

But something felt off.

"This is Hell," he said, his voice a deep, guttural rumble that reverberated in the silence. "But not the one I know."

"Hey, asshole!" He heard and turned to see one of the Fallen Angels pointing her spear at him. "How dare you kill one of us? You just be lying down and taking the blade like the rest of your kind do!"

Spawn merely narrowed his eyes in response, uncaring of what she or her fellow Fallen thought. Instead, he turned to walk away.

"Don't you turn your back on us!" She screamed and charged, rearing her spear back for a killing blow, but Spawn's chains lashed out and wrapped around her tightly, restricting her movements. However, the chains didn't stop there as they kept getting tighter and tighter until her body exploded in a shower of what appeared to be golden blood.

Spawn looked at the remains with some interest, curious about this new development, namely the blood. Last he checked, angels bled red blood. However, he put that thought to the side to look at the Fallen Angels who were pissed and looking to avenge their dead sisters.

'They never fucking learn, do they?' Nathan thought bitterly and angrily as he turned to regard them coldly and mercilessly.

"Kill him!" One of the Fallen Angels shouted and charged with her sisters. Growling, Spawn's cape lashed out and knocked their spears right out of their hands, his chains striking some in their helmeted faces, while he grabbed the one closet to him and ripped her head off her body with a single pull. He dropped the corpse and tossed the head aside.

"That was your final warning." He spat with cold fury. "Fuck off and leave me alone."

And with that, he willed himself to vanish with his power. He had no interest in killing them, or getting in the way of whatever they were doing in Hell. He needed space to figure out why he was here and what to do.

But one thing was for certain, the Exorcists would not be forgetting him anytime soon.


It was clear to Spawn that he was in a world far unlike his own, a Hell different from his own yet there was similarities that at least made neither of them too distinctive. It was still a shithole filled with demons indulging in their sins. The air was just as foul as the Hell he knew.

He didn't know how he got here, but he didn't give too shits about that at the moment.

He scanned the darkened alleyways with a practiced eye, looking for something—anything—that resembled the sanctuary he had once carved out for himself in Rat City. But every shadowed nook, every abandoned corner, was already claimed.

In one alley, he saw a group of demons huddled around a blazing barrel, their grotesque forms bathed in the sickly orange glow. Their eyes, glittering with suspicion and malice, followed him as he passed, daring him to make a move. Further down, a filthy collection of ragged souls scrabbled through the refuse, fighting over scraps of food with an intensity born of endless hunger. Even the deepest, darkest corners, those places that seemed devoid of life, were home to something lurking in the darkness, waiting to strike at anything that ventured too close.

With each step, his frustration grew. He'd once ruled his own domain, hidden in the bowels of New York, the king of a forgotten world beneath the city's streets. There, among the rats and the refuse, he had found a place where he could watch and wait, where he could brood over his losses and plan his revenge. It had been his sanctuary, his kingdom of shadows.

But here, in this hellish city, there were no shadows left to claim. Every inch of darkness was contested, every shred of privacy hard-won and fiercely defended. The hierarchy of Hell was brutal and unyielding, and there were no unclaimed spaces for a lone wanderer to stake his claim.

He turned another corner, and stopped at the sight before him just as a loud cry filled the air, coming from the alley he had stepped into.

What he saw was what appeared to be a humanoid wolf being jumped by a gang of shark demons, who had her pinned to a wall. She snarled viciously as she struggled to get free. "Easy sweetheart, we're just gonna have a little fun, that's all." The lead demon known as Badrap said as he chuckled with a sinister grin.

"I swear, Badrap, let me go, or else I'm gonna-" The wolf girl tried to kick him in the balls, but his companion, Hax, caught her leg and forced her down to the ground as she let out a painful cry as he pinned her down.

He cackled as he held her down while his large curved claw reached and touched her face. "I like them fiery…! Your daddy Blitz isn't gonna save you this time, Loona." He told her as she growled at him. Spawn watched the scene unfold as he stood by the corner of the alley, his eyes narrowing with disgust and disdain. If there's one thing he couldn't stand, one thing he despised next to the likes of child predators or killers... it was rape. no matter if it was a human, demon or whatever, being raped, he wouldn't wish it on anyone.

Just a reminder of how sick Hell was.

Meanwhile, Loona was struggling to get out of Hax's grip. "I'm not interested in what you want, fish breath!" She yelled as she thrashed around, only to yelp as she felt her shorts being pulled down as another demon chuckled at her.

"We're gonna have a lot of fun with you. So hold still, or I'll have to make that pretty face of yours less pretty." He warned her as Badrap got between her legs which his friends held apart to show her pussy to him..

"Hmm, tasty." The shark demon chuckled darkly and leaned forward while sticking his tongue out, causing Loona's eyes to widen.

"Let her go."

The dark, guttural rumbling voice stopped the demons in their actions and they looked to the origin of it only to see Spawn standing there with his eyes locked on the demons with a look of lethal intent in mind for them.

"What the fuck?" One of the shark demons blinked, before chuckling. "Check out this fucking guy!"

Badrap got to his feet and Loona took the chance to close her legs tightly, using her tail to cover herself up as best as she could. "Well, hey, retard!" the demon chuckled as he approached the Hellspawn whose eyes tracked his every movement. "This is Hell, not a Halloween convention. But I can respect the style. After all, it's like Halloween down here every day just without the trick or treating..." he glanced at Loona. "Well, treats in a different way~"

"Fuck you!" Loona spat with fury.

"Oh, I'll be doing that soon, bitch. And you're gonna take it like one." Badrap chuckled in a sinister tone before turning to Spawn. "So, you a new Sinner down here? Tell you what, how about you get first crack at the Hellhound bitch over there? Soften her up for us?"

"How about I take first crack at you?" Spawn threatened, then struck his fist out which struck Badrap in the face. He was sent off his feet and colliding with the wall hard, making him drop like a sack of potatoes.

Badrap got to his feet, clutching his face. "Get him!" He shouted at his fellow shark demons.

They dropped Loona and charged at the Hellspawn, thinking they could take him with numbers on their side.

They really didn't know who they were messing with.

At his command, Spawn's chains shot out and struck the shark demons while he moved with frightening speed. He grabbed one demon by the throat, then chokeslammed him to the floor hard enough to break his neck, then he stomped his head in which completely destroyed it. he snapped his head to another before driving his fist straight through the demon's skull, then ripped his arm free, watching the body fall to the floor.

"Fucker!" Hax shouted as he grabbed the Hellspawn from behind and tried to restrain his arms. But Spawn's cape wrapped around the demon tightly, choking him, then slammed him repeatedly onto the ground head-first until he stopped moving.

Another demon tried to save his friend, but Spawn grabbed him by the arm and pulled it off with a single pull. The demon screamed in pain as he fell to his knees, looking at where his arm used to be with wide eyes before Spawn started beating him to death with his own arm.

Loona watched with wide eyes at the horror show before her. The way this masked guy was killing these loan sharks with frightening ease and without mercy. But he also saved her from being raped. Her eyes soon spotted Badrap sneaking up on him, drawing a knife.

"Behind you!" Loona shouted.

Spawn whirled around and caught Badrap's arm tightly, forcing it back to the point the bone literally snapped in two with it even piercing the skin. Badrap screamed in pain before looking up at Spawn with wide, fearful eyes.

"W-What the hell are you?" He whispered with fear and horror.

Spawn merely narrowed his eyes before he drove the knife into Badrap's skull, jerking it around some, then dropped the lifeless body.

With the demons dead, Spawn turned his attention towards Loona who was now leaning against the wall, her knees up with her busy tail covering as much of her lower body as she could. Spawn then began to approach her.

"Stay back!" She warned with a growl. He may have saved her, but he could've just done that to have her all to himself.

Her eyes widened when he picked up her discarded shorts and dropped them onto her knees. She looked from the clothing to him, her eyes still wide.

"Get going." He said in a no nonsense tone, then turned around to at least give her some privacy.

Loona stared at his back for several seconds, then put on her shorts before clearing her throat to let him know she was decent. He glanced at her and took in her appearance now that she wasn't half-naked and on threat of being raped.

She was a Hellhound for sure, with white fur, has a snout with pointed teeth, a dark gray nose, eyes with red sclera and white irises, white fur on most of the body with gray spots on her shoulders, and a tuft of voluminous gray hair combed to the side that reveals her ear. She has a large bushy tail that's almost as big as she is that's black with a white underside to it. She has an eyebrow piercing and a black choker with white spikes on it. Her clothes are a gray crop top that's lightly ripped at the edges and a set of strings that form a pentagram over her chest above her breasts. The last bit of clothes she has are black fingerless gloves to show her claws, black shorts and long black leg warmers or stockings without any shows to cover her paws.

And judging from her voice, he'd say she was in her early twenties, not far off from his age .

"I just want to say... thanks." Loona muttered, not really used to thanking anyone but the guy did save her from being gangbanged by a group of Sinners. She mentally scolded herself for letting them catch her off guard and resolved to not let it happen again. She looked up at her saviour. "Who are you?"

"Someone that doesn't want to be bothered." He said, and then he walked away straight into the darkness where he just seemed to disappear.

"Jesus..." Loona breathed quietly, but she took the hint and began to leave the area. She cast a glance back before fully leaving the alleyway, knowing she couldn't stay away from the office any longer.

Blitzo was already going to be overprotective, she didn't want to test just HOW much more of an irritation he could be if she was gone any longer.

But she would not forget her saviour anytime soon.


And that's it for this one. By the way, if you want, just imagine Keith David is the OC's voice actor, since it's Spawn and I can't see anyone but Keith David doing the role, no matter if it's an OC or Al Simmons.