Pronouns: She/they/any
A cheerfully amoral but generally harmless mad scientist who "terrorizes" a small Minnesotan town (perpetrates kinky chaos that the residents are largely indifferent to, you know how wish fulfilment settings are.) A former human who genespliced herself into her current form in the spirit of reckless experimentation and spitting in the eye of God. Although she's well versed in big clanky machines, toon physics gadgets, and transformation ray guns, she specializes in potions and serums, including developing and distributing bespoke fantasy-HRT regimens.
Dominant-leaning switch, equally happy to transform herself or be transformed.
Q: "is there any backstory to how doctors hyland and mutable met?"
Dr. Mutable has been making her hometown steadily weirder since failing out of university and Dr. Hyland originally moved there to fulfil simultaneous goals of: being in collaboration-range with a like-minded mad scientist, being in a place where she doesn't particularly stand out day to day¹, and needing to get away from the wreckage of a werewolf rampage quick-like. There was some polite if arch/supervillainesque mail correspondance about their research at first, and then one of them inevitably ambushed the other with an experimental transformation ray and it transitioned smoothly to a sort of Narbonic x Spy Vs Spy scenario.
¹: it's a mixed human/anthro universe anyway and Dr. Mutable is not the only one breaking the laws of biology over her knee so Hyland is not, like, a "fleeing from cryptid hunters and government researchers" kind of anomaly. But she is visibly Weird.
Q: "what are mutable & hyland's respective labs like, if you've thought about it? i assume "vague cartoon mad science lab" but like, underground lair? spooky castle? floating fortress?"
Mutable has a shiny modern laboratory whose surface level is sort of passably normal but it sits on top of an apparently endless labyrinth of basements and sub-basements which can be quite strange as you get deeper. Bubbling vats and ominous lights and entire rooms packed with strange machinery of no obvious purpose, and so on. Meanwhile Dr. Hyland does all her science in an ominous rundown mansion out in the woods. Terrible lighting, creaky floors. Every shelf, bench, and cabinet is a complete jumble of tools and parts and random junk with no discernable order to it all but she'll yell at you if you try to move anything.
* Artfight
Pronouns: It/they
The Incubator is a descriptor, but it has no personal name and feels no need of one.
A magically constructed slimecreature originally designed to be the perfect host for a wide variety of parasitic eggs, able to tailor its temperature, consistency, nutrient content, and other traits to suit. The seat of its consciousness is a stone orb which normally floats in the middle of its head. Anyone who reaches inside to touch the orb (or removes it to hold) can "program" the Incubator to reconfigure its body material or give it commands to follow, assuming they have the magical knowhow. The fist-sized orb is very difficult to damage, and will secrete additional slime to replace lost mass, slowly regenerating even if the rest its body is somehow destroyed. The Incubator's most common form is tauric (two-armed and four-legged) but it can freely have whatever configuration of limbs it wants. Its personality is agreeable and hedonistic, with a mischievous streak.
Submissive, although its first loyalty is to its owner Archidux Kamaris de Karabia Kabai Kokabiel.
Pronouns: It/they
Full name Kamaris de Karabia Kabai Kokabiel. It tries to insist on its full name in all contexts despite the obvious absurdity, and detests nicknames and hypochorisms. In practice, refer to it with whatever shortform you like.
A six-inch-tall demon with a long tail, a longer name, and an ego that dwarfs both. Its position in the nobility of Hell - a neutral equivalent to Archduke/Archduchess - is dubious and possibly self-conferred. Its powers include telekinetic control & animation of chains, and a hypnotic influence over minds. It's not typically inclined to wear clothing, but frequently wraps chains around its body hung with pendants and crystals, thereby keeping a tool on hand that works with both of those abilities. It's also a specialist in magically manufacturing and programming artificial servants like the Incubator. With the Incubator's assistance, it manages a breeding 'stable' of giant demonic bugs.
Strictly dominant, and petulant when not deferred to.
* Artfight
Pronouns: They/them, although they're mostly resigned to she/her and won't actually object to it.
An angel of the BLANKSWORD setting: a humanoid with ceramic skin and insect-like wings, created by Literally God to serve His empire. The Angel of Record is tasked with preserving an archived account of important events and distributing divinely-approved tellings of that history to the populace; that is to say, propaganda, and they became increasingly uncomfortable with the discrepancies between the things they knew and what they were required to say.
Record is partnered with the Angel of Corrections, at first as an acrimonious professional relationship where they often clashed over perspective, subjectivity, and the nature of truth. When they realized how much they had in common, it eventually became a covert workplace romance (very much illicit; angels are not permitted to be gay or transgender). Corrections is more gregarious and high-strung, and Record more taciturn and reserved.
Record does not live in a world that gives them a lot of support for gender dysphoria and autism, and they often lapse into mutism, especially when distressed. They use sign language to communicate with Corrections when their voice isn't working, or if they simply want to say something privately.
Their task's magic gives them an eidetic memory, that is, perfect recall of events they've witnessed. They don't have the same kind of divine alignment with truth as the Angel of Corrections (who knows when someone is lying to them, and can force a confession or 'correct behavior' out of others) but they do have a personal distaste for lies and misinformation. They're also capable of generating pigments from their fingertips or temporarily changing an object's color.
Their service weapon is a combination chain mace and censer, which emits a thick multicolored smoke as it's swung. They have a high Defense, good Finesse and Constitution, decent HP, but poor Power.
In the 'bad timeline' version of events, Record becomes increasingly withdrawn. Corrections throws himself into advancing in the Angelic hierarchy out of "enact change from within" ambitions, leaving Record (less able or willing to mask their disability) isolated and resigned, largely giving up on political resistance and trying to dissociate their way through life.
In the 'good timeline' (the actual chronology here is loosey-goosey because I don't really care - this might be two divergent timelines or it might be sequential), Record and Corrections leave their positions on the mainland. In their attempts to spread awareness of the divine authority's atrocities, overreach, and other injustices, they basically reinvent guerilla journalism from first principles. Record uses the alias Voxpop as a pseudonym for their articles/reporting (from vox populi, vox dei - the voice of the people is the voice of God - a direct challenge to Him).