Slimekin

Slimekin are one of the strangest subtypes of Humanoid, but here we are. They're actually the most widespread form of humanoid, even moreso than Dragonkin, Giantspawn, Dwarren, and Beastkin. Their origins are complex, and not well-known outside of slime-studiers.

There are hundreds of variations on what type of Slimes there are, some of which are listed below;

"Slimes"
These are the most common and typical. They have a high articulation of their slime bodies, and as such can control their shape, usually taking a humanoid one. When paired with their aura-barrier, they feel just like a normal person, if only they didn't look like well-sculpted Jell-O. They're usually blue, for no particular reason that can be discerned.

Jellies
Jellies are neat in that their slime is acidic enough to eat away at organic materials, but little else, but they also have the ability to control their shape(More or less like Slimes) and even climb on walls... Somehow. Thankfully their aura-barrier means they don't HAVE to burn people on contact, but not every Jelly figures that out.

Puddings
Puddings and Jellies are related, as acidic Slimes that can also climb walls. They can't control their shape, however, and their acid is MUCH more potent than the Jelly's, able to eat through most metals with ease. Again, barrier-wise they don't need to burn everything, but very few Puddings figure it out, owing to the fact that, without telepathy, they have very few ways to communicate, and routinely fall into a more animal-like thought pattern.

Oblex
Oblexes are strange, even by Slimekin standards. They are acidic to the mind, being able to eat memories and thoughts as well as a Pudding could eat flesh. However, this makes them massive, living brains in terms of their own minds. Highly skilled and highly intelligent, Oblexes are able to control not only their shape, but their coloration; Paired with their barrier, you would never know an Oblex is shaking your hand, especially if they choose not to ransack your brain.

Cubes
Cubes are perhaps the strangest in appearance, since they're literally a Jell-O mold. They can't control their shape, but they're bound into a cubic shape rather than the shape of an ooze puddle. They're acidic, like the Jellies, but they're also quite translucent, making it hard to see them unless they've had a recent meal. Like Puddings, they often revert to a sort of animal-like mentality, due to their lack of good communication methods.