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The Hazbin Hotel is thriving, but its King is beginning to break. Behind the energetic facade and the rubber ducks, Lucifer Morningstar is hiding a secret—one that is physically crushing him.
When Charlie grows worried and she sends Alastor to uncover the truth, hoping their normal bickering will snap her father back to reality. But instead of a fight, the Radio Demon finds a tragedy centuries in the making. Bound by a silent arrangement to protect the Morningstar legacy, the King and the Demon must navigate a partnership where the line between rivalry and something much more dangerous is beginning to blur.
Bookmarked by TrebleHeart
15 Jan 2026
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Mistakes Were Made by Crashbandicoot96 for AndrogynousBlackBox
Fandoms: Hazbin Hotel (Cartoon)
06 Jan 2026
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Alastor had made a slight miscalculation.
This miscalculation had sent him running through his own bayou, skin slick with sweat as his heart jack hammered in his chest. It was easy enough to navigate the familiar terrain, but that wasn't the issue. It wasn't a matter of where he was going, but how fast he could get there. He was running from a creature that was supposed to be a myth.
- Language:
- English
- Words:
- 2,334
- Chapters:
- 1/1
- Collections:
- 1
- Comments:
- 10
- Kudos:
- 203
- Bookmarks:
- 35
- Hits:
- 1,614
Bookmarked by TrebleHeart
07 Jan 2026
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the frequency you bleed to by captivatedintrovert for chocobiscuits
Fandoms: Hazbin Hotel (Cartoon)
03 Jan 2026
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Vincent is a killer with a routine: pick the target, make it clean, disappear. But that was before he heard the voice. Smooth, knowing, broadcast through the radio like it was meant for him. Alastor’s voice.
Now Vincent can’t stop listening. Can’t stop watching. Can’t stop wanting.
He follows the radio host through the streets of New Orleans, through blood and static and late-night broadcasts that feel like confessions. But Alastor isn’t just a man with a voice. He’s bait. And he’s been waiting for Vincent to take the hint.
When he finds the body still warm, slick with blood and something sweeter, Vincent realizes too late: he’s not the predator anymore. He’s the audience.
And the show’s about to begin.
- Language:
- English
- Words:
- 6,604
- Chapters:
- 1/1
- Collections:
- 1
- Comments:
- 22
- Kudos:
- 219
- Bookmarks:
- 42
- Hits:
- 1,927
Bookmarked by TrebleHeart
03 Jan 2026
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Usually, a love story doesn´t begin with a murder. But in this case, it does!
When one killer meets another, they might fall in love in odd ways- with the thrill of killing together, and with each other´s craziness. Alastor fell first and Vincent followed his guidance willingly, letting himself give in to his desires for the other man.Bookmarked by TrebleHeart
02 Jan 2026
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Alastor catches Lucifer attempting to steal one of his jackets before the start of his heat; sex ensues.
- Language:
- English
- Words:
- 18,461
- Chapters:
- 4/4
- Comments:
- 134
- Kudos:
- 1,670
- Bookmarks:
- 328
- Hits:
- 24,676
Bookmarked by TrebleHeart
31 Dec 2025
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With this particular time of the year approaching with the speed of light again, Alastor seals himself up in his hotel room to suffer through his own humiliation alone and away from the prying eyes. What he hasn't foreseen, though, is the fact that living with a certain King under the same roof might significantly change things. And change things it does, seemingly to the point of no return.
For the first time in his life it seems that it’s him who’s the one being hunted instead of being a hunter himself. However, if the Devil wants to become his mate, he needs to catch him first.
The chase has already begun.
This fic was written for the Hazbin Monsterfucker week 2024, containing a few consecutive prompts, such as: hunting/in nature, belly bump/size difference, knot/very long tongue, mating and additionally a little touch of some eldritch horror just to spice it all up nicely.
Bookmarked by TrebleHeart
30 Dec 2025
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Summary
Chapter 1: Alastor & Lucifer get in a fight, and things turn spicy. A good old fashioned hate fuck. [Top Alastor]
Chapter 2: Lucifer catches Alastor being naughty, listening to the audio of their previous encounter.
Chapter 3: Alastor receives his due punishment. [SWITCHING]Bookmarked by TrebleHeart
27 Dec 2025
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though it's been said (many times, many ways) by Mlle_Heloise
Fandoms: James Bond (Craig Movies)
24 Dec 2025
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Summary
While Q recovers from surgery, Bond makes a mission of proving he cares about him.
Bookmarked by TrebleHeart
25 Dec 2025
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Assemblies are supposed to be something that Alastor loathes every time he's forced to attend one.
But this one ends up being far more interesting than he anticipates.
Or another part to the Principal X College Student fic
Series
- Part 2 of Hell Is Where I Met You
Bookmarked by TrebleHeart
20 Dec 2025
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Summary
"Are you going to leave, or must I make you?"
The response was not what he expected. Or maybe, in the back of his mind, it was exactly what he expected. Lucifer visibly shivered, biting his plump bottom lip as he stepped even closer, no more than a foot remaining between them. "Fuck, Teach, don't threaten me with a good time now." Lucifer took another appreciative glance over Alastor's tall, lean body, a strong flicker of desire becoming apparent in those cerulean orbs.
"Unless..." Lucifer started, a sensual lilt to his voice as he took the end of Alastor's pitch black tie into his fingertips and tugged it harshly, successfully pulling the taller man so close that their mouths couldn't be more than an inch away from each other, "...that's exactly what you're looking for."
Or Principal X College Student AU
Series
- Part 1 of Hell Is Where I Met You
Bookmarked by TrebleHeart
20 Dec 2025
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Summary
Most interactions in Hell were born out of one of two necessities; protection or survival. Even in matters of lust, the same two driving forces were at the forefront.
Lucifer knew this better than anyone. He’d witnessed Hell's rise up from nothing but barren landscape filled with volcanic rock and ashes to the mangled, polluted hellscape it was these days.
He was reasonably content in his belief that Alastor saw him as more than a means to be protected by, or a method of survival against enemies. He’d not once asked Lucifer to fight a battle for him—hell, there wasn’t even so much as a deal locking them together.Series
- Part 6 of RadioApple RACK Week 2025
Bookmarked by TrebleHeart
20 Dec 2025
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“My Heart's Aflame, My Body's Strained, But, God, I Like It” by Madanimalscientist for Jucylin
Fandoms: Hazbin Hotel (Cartoon)
08 Nov 2025
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Summary
Lucifer Morningstar. King of Hell. Duck Enthusiast. Eldritch Being With Way Too Many Eyes. Most Beautiful Being in Creation, Especially in “Too Many Eyes” form. Wait, what was that last one?
In which healing Alastor proves trickier than either he or Lucifer expected, hidden feelings are revealed, and Alastor embraces his inner monsterfucker (as a treat).- Language:
- English
- Words:
- 30,353
- Chapters:
- 5/5
- Collections:
- 1
- Comments:
- 152
- Kudos:
- 764
- Bookmarks:
- 177
- Hits:
- 9,005
Bookmarked by TrebleHeart
16 Dec 2025
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Summary
"ALASTOR, JUST LEAVE!" Lucifer screamed, horns growing from his head, tail swiping angrily across the sheets. His voice ricocheted ducks off the shelves, piling all over the floor. He watched as the commotion knocked one of his family portraits off the wall, hitting the ground with a loud smash. Shards of glass surrounded the door, portrait bending against the frame. Tears began welling up at the sight of the semi-ruined portrait of him, Lilith, and Charlie.
"S-Shit," Lucifer cursed to himself and sat up fully to look around at the mess of his room. His tears messily flowed down his face as he stepped out of bed, walking over to inspect the portrait. Of course this happened to him. All he does is fuck up anything he interacts with.
He began picking up the shards of glass. The prescience of Alastor was still strong behind the door, but Lucifer didn’t care enough anymore to do anything about the prick.
"May I come in, Lucifer?" Alastor's voice seemed soft, losing the radio feedback it usually held.
___Alastor offers to help Lucifer with his wings, but it leads to something a little bit more...sensual.
Bookmarked by TrebleHeart
13 Dec 2025
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Summary
Q considers himself excessively lucky that he's never had to be in close quarters with James Bond for an extended period of time. But everyone's luck runs out eventually.
Bookmarked by TrebleHeart
11 Dec 2025
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Anthology of Summonings by KuronekoGrimm
Fandoms: Hazbin Hotel (Web Series), Helluva Boss (Web Series)
15 Feb 2025
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Summary
Choose your fancy when it comes to your demon summoning. We got all kinds. Kings of Hell, Overlords, Princes, Sinners and Imps. Find out how you manage to land right into the arms of said beings in a satisfying little bundle of plot. These stories will fill one to two chapters depending on the characters chosen and will have no relation to each other unless stated otherwise. Just enjoy yourself.
Series
- Part 1 of More Than Sin
- Language:
- English
- Words:
- 213,621
- Chapters:
- 11/?
- Comments:
- 924
- Kudos:
- 3,001
- Bookmarks:
- 582
- Hits:
- 183,566
Bookmarked by TrebleHeart
07 Dec 2025
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Summary
You had never really wondered where you would go when you died but you never thought it would be Hell. When you end up with Vox and the Vees life seems to actually be looking up for once and as time goes on you come to the conclusion that maybe Hell isn't so bad. With the life you lived as a human Hell seemed like more paradise than a punishment.
Bookmarked by TrebleHeart
02 Dec 2025
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A Light Among the Ashes by ChthonicDreaming, The_Curious_Ghost
Fandoms: Hazbin Hotel (Cartoon)
28 Mar 2025
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Summary
You come world of glittering soirées, forbidden passion, and deadly secrets. As a socialite trapped in a cruel marriage, you found solace in the arms of a captivating stranger, a man who made you feel truly alive… until your husband took that life from you.
Now, nearly a century later, you find yourself at the Hazbin Hotel, haunted by memories of stolen kisses and whispered promises. When you cross paths with him again— and find that your mysterious lover had been none other than Lucifer Morningstar himself—you’re left reeling. Did you mean nothing to him, or has time erased what once burned so fiercely?
Semi fluff backstory with mild spice followed by more intense spice in chapter 2
Bookmarked by TrebleHeart
01 Dec 2025
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Summary
Vox gets home from work, pissed off that Alastor had come back and he couldn’t do barely anything about it. Pentious failed within a few hours, and he was fuming. Good thing you’re here for him to take his anger out on.
Bookmarked by TrebleHeart
01 Dec 2025
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Summary
A Vox x reader for my gf (I’ll add the summery later)
Bookmarked by TrebleHeart
01 Dec 2025
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Summary
He felt Vox starting to shift, to get off of him, and before he could stop himself a panicked bleat ripped its way through his throat, eyes snapping open and hands frantically reaching out to grab onto his arms.
“Wait– wait, I don’t–”
Vox’s brows furrowed, confusion clear as can be on his screen.
“...I’m getting mixed signals, Al.”
Alastor groaned, frustrated, and reached for his drink.
Vox put it in his hand, and Alastor sat up just enough to down it before setting the cup back on the coffee table.
“It’s… Hard to say.”
Vox was quiet, as if considering for a moment, petting at Alastor’s side and silently delighting in each shiver and ear twitch it got.
“...Do you want me to… make you tell me?”
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While drunkenly hanging out, and practicing Vox's hypnotic powers, things get a little heated.
Bookmarked by TrebleHeart
30 Nov 2025