Veeky Forums designs some odd critters

Sup Veeky Forums I've been messing with an idea for a little while and this board is really really good at taking an idea and running (or whatever form of locomotion fa/tg/uys use) with it.

Basically an adventure where my players guard a facility full of creepy as balls odd fucking stuff. Think SCP but with bells on.

Here are the very basics.
>extremely established group
>Solid sort of historical kind of setting with fantasy and sci-fi elements but it's more of a weird alt history version of ours circa 1900.
>anything is permitted.

So the group normally travels a lot in their adventures (and in theory are still dead) but I've wanted an adventure where they stay in one place throughout it.

>adventure background
>the facility
This is where anything weird and wonderful gets stored. Bits of the true cross, Thors hammer, all that good stuff but also anything that the government can't kill.

So these might be odd critters contained in cells, funny looking micro whales which tunnel into people and lay psychic eggs causing them to murder all and sundry, living shadows that somehow turn people into furniture. You get the idea. All of it locked up behind heavy blast doors and steel.

Except that somewhere in the facility, one of the cells, which should be full, isn't.

Inside is the most dangerous weird critter of them all? Or it should be. It's escaped.

What is it?

Additionally what other critters might we find?

What other hooks work in well with this?

Please assist this tiny octopus.

it's a tall, human sized earthworm that stands upright that wears a black cloth robe around it's form.
it's completely non hostile, and if anything gets near it ignores it or just kind of stares at it before shuffling forward.
If it's attacked, it will try to lightly slap away the attacker until they leave or it's killed.
it drops no gold, no materials, no reward upon death, and it's corpse is barren. The only thing you get for "defeating" it is shame and guilt.

A hook I've been thinking off adding is that a a millitary group belonging to a foreign power have also broken in to attempt to steal *something* the party have no idea said group are there.

Not quite the cosmic horror I was looking for but I'll attempt to wrangle it in.

Deep Sea Vampires. Dove to the crushing depths to live in the perpetual darkness of the abyssal trenches, and the time living under the pressure made then strange and fluid. An expedition of some kind brought one to the surface, but now the brass pressure tank it was held in sits open, drained of water, and wet footsteps lead deeper into the facility...

This is more like it. The party have however just had an adventure that involved a lot of underwater fuckery. This might link in as an intro - "remember that weird mutant anglergoblinsharkgulpereel thing? Well you're to escort another one to [facility]."

a Malicebug.
Basically a tick with arms and legs that attaches to something and sucks the evil out of it, getting bigger and more powerful as it does.
Once it reaches a certain size it become a predator rather then a parasite, and hunts down evil to devour using fell powers derived from it's diet.

Being fed upon can have deadly side effects, and nobody is 100% pure; just more evil beings are prioritized for being ore filling.

An object that is theorized to be a 4th dimensional shape of some sort locked in a locker. Causes anyone who performed the object to have a seizure coupled with hallucinations about speaking with an entity claiming to be trapped inside of the shape. Hallucinated conversations are usually about mundane things including the weather, industrialized farming techniques, animal husbandry and familial matters. Entity doesn't know how he ended up inside the object, but does not seem curious about the subject.

A bizarrely nonhuman colossal corpse in a sarcophagi made of materials beyond modern technological capabilities.

The twist is, it's genuinely dead and doesn't do anything. It used to be some kind of lovecraftian titan, but it died long ago and all that remains is an invulnerable alien corpse.

So, apparently they found this mummy somewhere up in Wales or Ireland in the 1800s, but it's dressed up in Egyptian style, full bandages and stuff. Since it's the 1800s and Egyptomania is in full swing, of course they did the most fashionable thing: unwrap it. Now when they unwrapped it they found out that it's empty inside, nothing but dust - but they found that the insides of the wrapping is covered in Celtic patterns, ones commonly found in tattoos, and it seems like the former occupant has a full-body tattoo imprinted on the inside. They thought it's just an out-of-place artifact, but then the wrappings moved on their own and 'reformed' itself, before it swore like a sailor (an ancient Celtic one, mind you) and wrecked the unwrapping party. It almost escaped to the streets of London but our agents managed to get the better of it, and store the wrappings in a box, shut in a safe.

But right now, even though the safe is still shut, it had managed to undone the lock of the box, and slithered out in wrapping form. Find it, before it wreaks havoc on the civilians!

This starts flying around spitting teeth at people.

>Inside is the most dangerous weird critter of them all? Or it should be. It's escaped.

Approximately how dangerous do you want this critter to be? Do you want the players to be able to fight it?

Someone wears it like a suit and becomes as God

SCP style hunh? How about a biohazard bag that leaks needles and medical waste while wandering around, seeking living things to pincushion. Nothing like finding a trail of used needles and gore in some kind of hospital themed area without knowing where they come from.
For the kicker let any character related needlestick injuries result in horrific looking wounds but no immediate symptoms.

I think the idea is weird scp-type or gygaxian rust monster creatures.

Unique look, powers, personality.

But something level 3-15 in a dnd world that a party could fight.

Example: a creature whose main body looks like a large, rainbow feather. It is a cartilage-boned feathered next, with a hook tongue. The main body has no brain, and can't bleed out. It can grow back as easily as we can grow back a fingernail. The goal of this creature is to land its hook-tongue in an enemie. Afterwards, the real creature (which is an aquatic boned lizard thing, with scales that camouflage it in water) pulls on a thin line which is attached through the creature to the hook. The line cannot be severed until the second creature is killed. If it gets away with a party member, it will eat them with its disintegrator-mouth.

This reads like garbage man.

Looks like an edgy digimon. No

The Chimerika, otherwise known as the root of monsters.

The Chimerika is a slow, ever-shifting mass of flesh that can for short periods of time willingly take on limbs and properties of all kinds of beats, natural and unnatural. Its very hard to contain, and fighting it is... hazardous, to say the least.

Proximity to the Chimerika induces some kind of metamorphic effect in other living things, though higher order life forms like humans seem more vulnerable to it than simpler creatures like insects. Thankfully, this effect doesn't instantly turn you into a monster. It just makes you... "genetically suggestible" as one scientist put it.

If a sterile room, nothing will happen to you at all. But get too close to another living thing, and it will start to imprint on you. Physical contact always results in imprinting, and the effects of it are usually stronger and occur faster.

Unfortunately, while the imprinting can happen in an instant it usually takes several minutes for the changes to actually manifest to a degree that the subject would notice them. Its always a crapshoot what kind of effects you will get from an imprint as well.

For example, lets say you exposed ten people to the Chimerika and then, in turn, expose them all to the same cat. The cat, unless it was exposed as well, would stay a cat. But one person might start growing fur on their legs. Another might grow a tail. A third would grow ears or whiskers. A fourth would get a tail AND cat eyes. A fifth would change gender to match the sex of the cat, but not gain any catlike features in the process. A sixth would gain claws or sharp teeth. Etc...

Exposure to multiple creatures would have their imprints on you stack. But no matter how much you are exposed, you never entirely become what you were imprinted by. It is always an amalgamation of your genes and theirs, never a full replacement.

Humans also count for imprinting effects, but that doesn't turn you into a monster. Rather, you would just end up physically a new person, something like what a child of you and that person would look like.

The effects of the Chimerika itself lasts for some hours based on the duration and degree of exposure to the Chimerika, but no known case has ever picked up a new Imprint after 72 hours of leaving the area of effect of the Chimerika.

The Imprints themselves, however, appear to be permanent. Re-exposure to the Chimerika will not reverse anything that has happened to you, just make you able to gain new imprints. Those new imprints will rarely overwrite the imprints you have already gained, but stranger things have happened. Getting yourself back to how you started would require you to be constantly exposed and imprinted by your old self, so unless you have an identical twin or a clone its probably not happening.

The shapeshifting nature of the Chimerika makes it very difficult to kill, we don't even know if it HAS vital organs. Its fairly easy to contain, though it escapes on occasion by becoming something we never planned for. Like the one and only time we saw it breath fire.

Trapped underground, the risk of imprints from nonhuman sources is low. Identities are ruined, and there was one person who was unfortunately imprinted on by a mouse, but its still pretty rare. Missions to capture the Chimerika after it has escaped into the wild are much more hazardous, as the risk and severity of the imprints can be much more extreme.

I completely forgot about awful hospital
That shit has some disturbing monster designs in it.

Its a Man sized human hand with fingers that branch off into smaller hands, and those into smaller hands until the hands reach the size of a pinprick. The hands constantly wave and flicker in search of the nearest human. After being brushed by the monster, the person's hands will pop off and grow into duplicate hand monsters.

How? The corpse is invulnerable. Trying to cut it open so you can crawl inside isn't going to work.

A hole is a hole...