Sorry if this has been asked before! Hazbin bdsm fic recs??
...Dear lord, I have a lot of these.
So, most of these have BDSM-style dynamics, but I'll call out the specific ones that I know have "diegetic BDSM" (aka BDSM in which the characters actively KNOW they're doing BDSM, rather than just...hatefucking in ways that include checking in on each other to some degree). Also, you can assume that all of these are gonna be either Rated E, or Rated M but in the way that's very, uh, "rated-E-flavored". xD
Anyway, *rubs hands together* Let's get into it!!
Calculus (or the study of instantaneous rates of change and the summation of infinitely small factors to make a whole) by Delta_Pavonis (oneshot, 11k words, CW: blood/painful-but-consensual sex) is a delightful continuation of that one comic that went around Tumblr, in which Vox is visiting the hotel Alastor is like "Kiss me" and Lucifer's like "why the fuck would I do that" and Alastor's like "because it would be so fucking funny". This one takes that extended Fake Relationship plotline in a Dom-Alastor direction, and it's hilarious and hot!
Follow You Home by Delta_Pavonis (2/3 chapters complete, 40k words) also features a dominant Alastor, but it's a story that starts with Alastor having summoned Lucifer while he was still a human, and continues into his time in Hell. It spans decades upon decades, and the backstory it lends to their interactions is SO tasty.
glory be to the god that fucks by captivatedintrovert for umiekii (oneshot, 7.5k words, DIEGETIC BDSM) is a particularly blasphemous fic in which Lucifer is the Dom, and it is *exquisite* - my goodness, this author has a way with words, it's a brilliant combination of "seriously do NOT read this in public" and "a fascinating and emotive story" (though you might not expect the latter at first).
Mutual Satisfaction by romanaxe (series, 61k words, DIEGETIC BDSM) is a series I've yammered about before; it's a lovely story of Alastor and Lucifer working out a BDSM relationship in which Lucifer is a gentle, caring Dom!
Go For Broken by MothballMilkshake, PitFTW (oneshot, 16k words, DIEGETIC BDSM) is a fantastic Dom-Lucifer oneshot, featuring some semi-public teasing!
good morning, my deer by captivatedintrovert for Rosypie3 (oneshot, 7k words) is some Dom-Lucifer consensual somno fun! <3
Drink Menu by BrimstoneCoffee (series, 236k words and counting) is one of my FAVORITE series, my goodness I love it - it features a LOT of discussion about What They Each Want Out Of This that don't *specifically* speak in BDSM-language, but if you like diegetic BDSM for the real "what we each want" discussions and the careful exploration and the storylines of "what happens when we DON'T communicate properly", this is also gonna be a series for you!
Here's the Stitch by eternalscout for edub91 (completed, 22k words) has a hilarious premise involving someone having a pair of Lucifer and Alastor "poppets" (what some refer to as "voodoo dolls", though the fic is careful to refer to them appropriately) that they're using to enact romantic scenes, and Lucifer and Alastor have been dealing with this enough times that they're past awkwardness, they want ANSWERS (and to kiss each other). Dom-Lucifer in this one.
A Gentlemen's Accord, If You Will by walkingcatfish (series, 48k words and counting, CW: copious amounts of gore) is one I've talked about before, in which Lucifer and Alastor form a mutual, gore-filled situationship of sorts! Alastor is usually the one in the Dom role here.
Merlot Ego by titanic_trash (oneshot, 4.2k words, CW: piss) is just a damn well-done humiliation-kink oneshot, Alastor's in the Dom role in this one!
Dominance by NarrativeNonsense (series, 16k words) is the well-named oneshot-and-follow-up in which Lucifer accidentally inspires an Awakening in Alastor and they fuck about it, a lot, and then have to deal with the awkwardness of The Aftermath. xD
How to Bag a Deer in 7 Days by TheValravn (ongoing series, 85k words and counting, DIEGETIC BDSM, CW: the most viscerally distressing rape scene holy shit, but NOTABLY that scene does NOT take place between Alastor and Lucifer) is a WILD freaking ride of a story! Slowly but steadily ongoing, it involves sex contracts and layers upon layers of fuck-uppery.
Stuck on You by Rosypie3 (oneshot, 4.6k words): Oh, nooooooo, Alastor is stuck in a wall, whatever shall Lucifer dooooooo.......notably, Lucifer does not realize this is actually Alastor, and thinks someone has left a very high-quality sex toy out. There are impressive levels of Lulu-Delulu happening here. It's what it says on the tin; enjoy. xD
What the Hart Wants by yersifanel (series, 64k words, DIEGETIC BDSM) features a Dom-Lucifer, and he and Alastor sort out a BDSM partnership together, it's lovely!
Tales of the Hazbin Fuck Closet by MixkaRules18, PitFTW (completed, 46k words, DIEGETIC BDSM) is about a specific closet in which everyone in the hotel (except for an exasperated Niffty who is sick and tired of everyone else's shit) goes to fuck their respective partners, and it follows Lucifer and Alastor's adventures there!
Rendezvous by romanaxe (series, 17k words, DIEGETIC BDSM) is one I've definitely talked about before, plenty of guided masturbation here!
X is for Xeroxing by titanic_trash (oneshot, 8k words, DIEGETIC BDSM): Lucifer clones ahoy!! Sooooo many Lucifer clones. xD
The Five Senses of You by MixkaRules18 (series, 146k words, DIEGETIC BDSM) is one I've mentioned before, the Piercing AU, Alastor is the Dom in in this one.
To Be the Perfect Angel, Some Sin Must Be Done by eternalscout (series, 99k words, DIEGETIC BDSM) is one of those series that kinda has Everything in it, there's dance marathons, there's crack, there's a Dom-Lucifer BDSM situationship, there's Alastor dressed as a sk8r boi, what more could you need of a series?
The Devil You Know by Kasidra (completed, 101k words, DIEGETIC BDSM) has a full-on plot involving Lucifer waking up without his powers, and Alastor protecting him while they work on getting them back. They play with some fun CNC in this one, with Dom Al as their default.
Strange Appetites by Gotllphi (ongoing, 116k words, CW: gore and consensual torture, DIEGETIC BDSM) is THE fic I can never shut up about on these posts. xD See more here!
Wicked Game by TrashDemonx (ongoing series, 185k words) is the Dominant-Alastor fic of all Dominant-Alastor fics, Trash has fit SO many kinks into this series and it is truly impressive! Definitely a "don't read this in public". xD
More Than Talking by CursedCatJoules (it ME!, completed, 12.8k words, DIEGETIC BDSM) is the sequel to "The Wing Talk", though it stands decently well on its own as a smut. One Alastor, many Lucifers, many kinks and unorthodox grammatical tenses crammed in there.
Unaffected by CursedCatJoules for romanaxe (it ME!, oneshot, 4k words) involves Lucifer and Alastor kinda gay-chickening their way into a Guided Masturbation scenario.
Free Wills by theautomaton (3 chapters written, last updated in 2024, 7k words) is an as-yet-incomplete fic that has rewired my brain chemistry and indirectly inspired two separate fanfictions of mine (as well as another fanfiction of a friend of mine). HIGHLY recommend for anyone who enjoys pondering ~the Implications~ of fanfics, because this is INCREDIBLE. Lucifer and Angel each have their time in a Dom-type role here, but for the most part Angel is the one in the "driver's seat" during the actual sex.
How to Bag an Angel: Take That, Depression! by Princeliest (oneshot, 7.8k words) is the AppleDust fic I recommend to anyone interested in trying out the pairing for the first time! Featuring Angel being the gentlest Dom for a depressed-dad Lucifer. <3
No Bond Stronger by FurbanLegend, henchy5824 (completed, 30k words, DIEGETIC BDSM) is a delightful story in which Charlie decides that the best bonding activity that would make Vaggi and Alastor get along would be platonic BDSM! And they just kinda...roll with it, and get VERY into it. :P
For Want of a Delicacy by CursedCatJoules (it ME!, ongoing, 30k words and counting, CW: menstruation, DIEGETIC BDSM) is my Unexpectedly-Emotional Menstruation Fic that accidentally became a study in sexuality and BDSM.
Rosie knows best by Godlizza for shiningnight (oneshot, 11k words) features a Domme Rosie encouraging Charlie to explore her own Domme side, and this fic knocked my socks off when I first read it! I'd only ever read Godlizza's T-rated work before, I was NOT prepared for how steamy this one got. xD
You, Me, and the Shadow Makes Three by titanic_trash for BrimstoneCoffee (oneshot, 8k words) involves Human-Alastor summoning Demon-Alastor by mistake (he'd been expecting Some Random Demon, not *himself*), and Demon-Alastor has a proposition to make, for Reasons. I love the way this story writes Alastor's banter with himself, and the storyline makes sense and is executed Really Damn Well!
The Princess's Public Service by All_Our_Troubles (Ongoing but each chapter feels self-contained as its own story, 30k words, DIEGETIC BDSM) is one I've talked about here before, in which Charlie has a Free Use kink and Vaggie is happy to help make those dreams come true in the most Safe, Sane, Consensual way as is possible for them!
I don't even know how to classify this one ship-wise...Angel/Vox? Kinda?
Fake and Gay by ohdeercoffee (completed, 20k words) is hilarious and features enough secondhand embarrassment to kill a...idk, an average Tumblr user. It involves Alastor tricking Vox into releasing Angel Dust's soul after the death of Valentino, ostensibly by agreeing to have sex with Vox, but he actually disguises Angel as himself and sends him off to do the deed (with himself and the rest of the hotel listening in to ensure they can rescue him if necessary). Unfortunately he did not consider the implications of ANY part of this plan, and the results are some of the funniest lines of dialogue I've ever read.