Alastor X Rosie Novels & Stories

I just finished one that's honestly a trip—it’s a crossover with 'Dungeons & Dragons' where Alastor runs a tavern in Sigil and Rosie’s a tiefling baker from the Lower Ward. The author clearly knows both worlds, so instead of just slapping the characters into a generic fantasy setting, they rework their powers and histories to fit the Planescape lore. Alastor’s radio static becomes a psychic whisper, and Rosie’s cannibalistic charm gets translated into a beguiling aura that wins over modrons and githzerai. It’s not just a backdrop; the mechanics of the planes actually drive the plot, with a contract dispute over a soul-trade route becoming the central conflict.

What stood out was how the crossover forced them into roles that highlighted different facets of their dynamic. Rosie’s pragmatism in navigating the faction politics of the city of doors contrasted so well with Alastor’s chaotic-lawyer act, which felt even more unhinged in a setting where contracts are literal, magical bindings. The fic is more about political maneuvering and unsettling hospitality than outright horror, which made the rare moments of visceral description hit way harder. I stumbled on it after searching for ‘Planar travel’ tags on AO3, and it’s a deep cut, but totally worth it for how thoroughly it commits to the blend.

I tend to see a lot of tension built around the idea of Alastor genuinely valuing Rosie as an intellectual equal while his nature as a deal-making, chaos-loving entity wars against that respect. Fics that hook me aren't about romance in a conventional sense, but about this unnerving dance where he might be tempted to 'collect' her soul or manipulate her, but finds he can't bring himself to cross that line because she's the only one who gets his jokes. The conflict is less 'will they or won't they' and more 'can this monster allow himself a true peer without trying to own her?' It's a test of his code.

Rosie's side is often about balancing her maternal, community-focused cannibal overlord persona with the thrill of matching wits with someone truly dangerous. She knows the risks. Does she indulge the friendship for the excitement, safeguarding Emporium customers all the while, or does she draw a hard boundary to protect her people from his unpredictable whims? That push-pull between her protective instincts and her own darker curiosities gives her real agency in the dynamic.

I keep seeing folks asking about this pairing lately. Honestly, the most interesting stuff I've found isn't always the explicitly romantic takes. The whole dynamic is built on implication, on a shared wavelength of genteel menace. A good writer will have them communicate in a kind of code, using formalities as a private joke. They don't need grand declarations; chemistry sparks in the way they finish each other's macabre observations, or how Alastor's static-laced smile seems to soften a fraction when Rosie suggests a particularly clever bit of psychological torment. It's about power parity, not passion.

What really sells it for me is when the story remembers the audience. They're performers. Their 'courtship' could be a series of staged social calls that double as power plays, with Rosie's cannibal aristocracy as their rapt theater. The tension isn't will-they-won't-they, but how far will they go to entertain each other? Will Alastor provide a fresh 'guest' for a dinner party? Does Rosie help him craft a broadcast that undermines another Overlord? Their affection is measured in favors that look like business to everyone else. That's way more compelling than any forced lovey-dovey stuff.