New Monster Ideas

[Howlando]

As the title suggests, I'd be happy to hear some suggestions for interesting new monsters to brighten up our Underdark ambient spawns.

Generally restrict your suggestions to existing NWN/EFU models (possibly with changes such as increased or decreased size, unusual glowy VFXs, etc.)

[Mortui]

Possible Machine spawn

"Substance Mutated Kobold/Goblin"

Significantly larger than average and glowing green.
Perhaps using a battleaxe and being impressively strong, on-par with Pissrat Veterans.

[WriterX]

Here are a few Monsters from Manuals I dug up that might fit the  setting. (Forgive if a bit long, I shall edit a bit after publishing  this post)

Aballin - Living pools of water (slightly more acidic  than pure water) that attempt to drown their prey and "consume it" over  the course of three weeks. They could use Slime Models and spawn near  ponds, lakes or simply in the wilds.

Banelar - Large aquatic  snakes with humanoid heads that can use small magical items with their  "Mouth whiskers" and cast an assortiment of different spells. Could use an enlargened snake model.

Bullywug  - Completely insane, murderous and hunting for anything that moves frog  people. Could use a number of possible models (or even normal "Fat"  player models turned green)

Crawling Claw - Think Leaping Ticks, only disembodied hands.

Darkenbeast  - Large, boney-looking bat like creatures of different colors. Could  used the Gargoyle model, with different colors.

Dread Warriors -  Undead fighters/barbarians who are animated right after their death,  thus letting them retain some degree of their intelligence. (PC Bodies, undead models, anything goes)

Ghaunadan -

"These vile, intelligent monsters are the
loyal servants of Ghaunadaur, the drow
deity of oozes, slimes, and jellies. Ghau-
nadans are similar to oozes, but they are
quite intelligent and can form their
bodies into humanoid shape."

Gibberlings - Small, furry, goblin-like, attack en mass. Too dumb to retreat, and live to eat. Could use modified goblin bodies.

Malaugryms - Not exactly random spawns, but here is a description from the manual:

"Malaugryms are perfect shapeshifters whose greatest delight is
extending a jawed tentacle down a living captive’s throat and eating
him from the inside out.
Also known as shadowmasters, malaugryms are creatures of pure
evil native to some alien place. Consumed with a lust for power,
they hungrily await any opportunity to venture to the Material
Plane to extend their domination and acquire their favorite food.
They use the Plane of Shadow to reach the Material Plane, leading
to the (apparently mistaken) impression that they are actually
native to that place.
In their natural form (almost never seen), malaugryms are spher-
ical creatures about 4 feet in diameter, with three long, powerful
tentacles tipped by razor-sharp hooks, and a beaked mouth in the
center of their bodies. Three large, round, golden eyes surround the
beak. Their hide is rubbery and thick, mottled brown and green in
color. They possess an innate levitation ability and hover in the air,
tentacles coiling in constant motion.
Malaugryms do age, but they do not seem to die of old age.
Though they might otherwise be immortal, very old malaugryms
are typically eliminated by younger, stronger malaugryms hungry
for their place and status.
Malaugrym speak Common and their own language."


Nishruu  - Shapeless mass, that eats magic. Could be something that spawns  instead of magic eaters when a sufficiently powerful spell is cast.  (Could look like Red Smoke)

Spectral Panther -

"
Spectral panthers are mysterious
creatures that feed on both the fear
and the flesh of their prey. They
prefer the meat of intelligent crea-
tures, for their fear is so much
more satisfying.
Spectral panthers look much like
oversized black panthers, 10 to 12
feet long. Their bodies look translu-
cent and almost insubstantial, but
this is an illusory property of their
fur. Their eyes are deepest black, how-
ever, and never reflect any light.
Spectral panthers have darkvision to
a range of 120 feet"

Could use modified Malar Panther or Panther model.

[Knight Of Pentacles]

Elephantmen Slavers who use their slaves to perform circus acts.

[xXCrystal_Rose]

Shadowfin - Small, dark shadowy fish like the silverfin cave fish. These fish however are more prone to shoaling in large schools drawn to the light of aquatic plants and unfortunate creatures. They are near harmless scavengers individually but are known to be terribly territorial. A shoal of Shadowfin may engulf would-be predators in a swarm of darkness and needle teeth.

Kelp Creep - Although not always reminiscent of kelp itself these vegepymie-esque creatures seem comprised of aquatic plantlife. They like to hurl a pouch of tangling kelp at their foes as they slowly lurch forward to absorb their bodies nutrient and use the corpse as a host for new growth. The bodies of slain kelp creeps can be harvested by a skilled farmer (or maybe general harvester) to recover handfulls of cerulean pearls or potentially lungroots.

Water myconids based off of sponges and exotic fungal growths beneath.

Abyssian Serpent - A viperfish. These deceptive hunters stay in the darker places away from the curious light that many corals and plants of the deep trenches sometimes may produce. They look for stragglers, their bodies blending into the darkness except for one stalk with a light upon it rising from where the dorsal fin may be. Mechanically it would appear as a 'tiny glowing light', like a glowfly underwater, but if anyone approaches it would shapeshift into a viperfish and attack, revealing the light for what it really is.

Bloated Grouper - Normally not violent unless hungry these massive groupers grow to obscene sizes, easily enough to swallow a human whole. They drift with schools of docile fish that feed from parasites the enormous fish may collect. It is extremely rare for fish to grow to this size, so naturally they are worth a significant value, both for the sheer food prospect and rumored potential that their flesh has absorbed toxins from deep fish which may be beneficial to certain magics... (Like a very rarely seen white stag, in very difficult to reach deep deep waters)


Clawed Octopus - A breed of octopus that does not have any suction pods along its tentacles. Instead this species has large hooked claws at the tips which dig into flesh and rip outward as the octopus jets away, blending into the terrain and waiting for the prey to succumb to bleeding from the wounds. Hide in plain sight wounding octopus.

[granny]

Hungry Glowflies - some places of the Underdark have an abnormal quantity of glowflies that, while usually harmless are a threat to careless adventurers that approach too close. Some speak that they're attracted by other sources of light and that will absorb the life of whoever they manage to caught (Negative damage).

Cloud of Cackling Spores - this colorful fungi (same mechanic of Russet Mold) sends forth spores of colorful hues, each one having a different effect upon your mind (Tasha's Hideous Laughter being the chief effect, but other spores might make you confused, charmed, or even dazzled).

Writhing Dark Tendrils - (cloud monster of evards) usually stuck into the same place, the dark tendrils are only dangerous to those that approach too close to them. These managed to unstuck themselves from their spot and slowly advance in group towards any source of life.

Zurkhwood Treant - usually thought to be a zurkhwood mushroom, this one actually moved and it's coming in your direction!

Upgrade to Will-O'Wisps

Phantom Fungus

Hag Encounter (don't laugh!) - you spot an old, lonely woman in the middle of the road. Through talking with her, you might convince her to sell you some potions or poisons or instead infuriate her too much at the point of making her attack you with random curses (from turning you into a toad to give you oozing butterfly wings) and crazy summons before vanishing in the spot.

Luminescent Eels - these creatures only gather at the dark and deep waters of the Deepdark. Usually seen in schools of three to six eels, they are vicious in their attacks, usually making people drown by being forced to sleep and being unable to breath (mainly their target are sharks, who can't stop swimming or they die). Their toxin is close to the same attack of their land cousins, the blue worms.

Luminescent Troll - Rare, this troll got special abilities added to the usual troll. Because of some symbiotic relation, this managed to control the spores of the luminescent fungi that grow upon his skin. He sends clouds of noxious and diverse spores upon his enemies before attacking. He also got a faster regeneration rate.

Void - (darkness cloud monster) this big void of darkness moves from place to place swallowing life and light (negative damage and random effects similar to the one of areas of deep darkness like Old Stones).

Violet Fungi - it often grows near Shrieking Mushrooms and they seem to work as a team to attract and kill prey. While the Shrieking Mushrooms attract prey with their loud screams, the Violet Fungi sends forth its tentacles in order to kill the prey (evards)

[granny]

Gibberlings - I think they should use small Chosen models and place them en masse.

[Somniis]

Brain Mole - an aberrant psi-creature.

Similar to the Psionic Hound, except using Dire Badger physical model, with groovey purple or strange glowy skin/FX (or perhaps water bubbles floating up from their bodies?) when enraged.

Since Brain Moles are attracted by Psi-Activity, and magical spells that replicate psi-FX,, ... perhaps a Brain Mole might be randomly summoned on a 1 in 30 chance to a spell-caster not using Abjurer's Nighshade.

The Brain Mole's abilities could be: Balagarn's Horn, chew, Int drain, chew, dominate person, chew, burrow into the mind-field of the target,... anything you like.

And there could be nests of Brain Moles deep in the UD, or the Machine... that are very dangerous en masse.

[Dwarfisim]

RotheBeast- A rothe model, but perhaps larger? Red fur rather then brown. Mutated by Substance, or simply a genetic mutation of evolution, these Rothe's are not docile in nature, to the contrary, they are to rothe what a raging bull is to a cow.  Sharp horns, a mouth full of teeth, and thundering hooves, seeking vengeance on all those who have hunted the herds to near extinction.

Bite, horn(pierce), Horn(pierce)? Attacks?, along with barbarian style rage 1/day? Or per Encounter, to simulate charging and trampling?

[Knight Of Pentacles]

Cavemen - Humans who were forced into the dark several millenia ago.  They are completely blind though their sense of smell and hearing compensate for it.  Use primitive weapons and hunt anything they can eat.

[Stranger]

Duergar murderbandits.

Bugbear and hobgoblin ambushes.

Summoned dretches plus (monstrous?) summoner.

Stray (damaged?) H'balan flesh monster left over from the anniversary breach.

Lesser thrall patrol.

Randomly placed portal that either drops one off in a randomized wilderness location, or proves to be an amusing trap.

Corrupted animatrons. You know the ones.

Goblin knights on dogback.

Rust druids.

Underwater substance cloud, functioning like a gas would but with more exotic effects.

Behemoth beetle!

Monstrous adventuring party, programmed to buff up.

An undead bard.

Colossal rock worm queen and family?

A roving pack of ghouls.

Deepspawn, that queer entry in Malarite dogma, whose only attack is unlimited summoned monsters!

[Ebok]

LOWERDARK MONSTERS
The world is coming unspun, the darkness in the deeps is slowly unweaving the world from the bottom up. The results of this unweaving creates two additional fragments of space, typically forming around each other.

Unwoven Threads: highly charged magical threads of light that lash around throwing bright light and sprays around. These are basically threads of pure chaotic magic. (might sometimes drop an interesting spell casting thingy)
Expanding Void: clouds of dark void that roll across the landscape, released from the gaps between the threads of the unspun weave. A darkness version of the Gas monsters we have in other places in the module, slow, but mean.
Grasps of the Abyss: In the darkest places, encircling tentacles reach up form the depths of nothing--and seek to drag the brightest lights back down with them. A tentacle aberrant that reaches up through the cracks of the world and attempts to murder unsuspecting travelers. An aberrant predator.

MIDDLEDARK
There were two giants that played a roll with a variety of dms over the past, and they've since fallen into obscurity. This provides an opportunity to use the conflict between them as wandering monsters, each band hunting for the others--and whatever else happens to get in their way.

Red Ogres: These orges are bound in servitude to the Fire Giant and the lava flows. Since they have lasted this long, they have begun to expand their reach, engaging in an elemental battle between them and the Ice Giant.
White Ogres: Similar to the flame based orges, these have also been bound into service to the giant. They serve as the ice giant's wrath and could be styled after the mist orges or something similar. They begin the haunt the cold areas of the server, or marching out against the fire orges.
Shadow Kobolds: Raiding parties of over zealous shadow kobolds are out and about, seeking wealth, jewels, and artifacts to fuel some unknown agenda. They're all stealth-ed naturally and work in groups, not particular devastating but can be dangerous during the surprise.
Light Haunts: a curious entity or phenomenon that appears in areas around the machine and sanctuary. They teleport around and summon the sparkling lights. They are drawn to the lights and thoughts of wandering adventurers.

[granny]

Ibrandlin - Ibrandlin, or "lurkers in darkness", as they are formally called, are creatures created from fire lizards by human clerics of the god Ibrandul. They appear as fire lizards with long, thick tails; in other words, they look like elongated, wingless red dragons. Ibrandlin have gray scaled bodies, with red-and brown-mottled backs and reddish undersides. Hatchlings are light gray all over, their scales darkening with age.

[Moonlighter]

The Sharn.

Sharn have large bodies shaped like teardrops with amorphous, hairless, and oily black flesh surrounded by a nimbus of purple light. Their massive three thousand-pound (1,360 kg) black and silver bodies are lit by continual magical flares, and they are between twelve and fifteen feet (366–457 cm) tall. They each have three huge, eyeless eel-like heads which each only consist of two nostrils and a large mouth with sharp fangs dripping saliva. All three heads are connected to a single trunk.[7]

Sharn have three large arm-trunks that each end in three hands. Two arm-trunks are located at the sides of their bodies, and another is attached to their backs,[7] although they only have two arm-trunks in the novel Blackstaff. Each hand has three clawed digits,[7] whereas in Blackstaff, each has four.

Sharn do not have legs or feet, just a thick tail, and they prefer to float or fly in the air rather than slither on the ground.[7] Each of their nine hands has multiple eyes that each see normally and with darkvision. In the novel The Sorcerer, each hand has a single eye in the center of its palm.[8][page needed] In Blackstaff, their skin can move and shift, with small eyes, fingers, and mouths forming and disappearing at will anywhere on their bodies. They can also regenerate lost limbs within seconds.[9] The sharn track by scent and by magic.[3]

[WellRespectedMan]

The Unquiet Dead - Spirits of all creatures unwilling or unable to pass from this world into the next, creatures such as these were known in the Underdark previously; the End of All Times has only served to swell their numbers.

Fairly weak ghosts with 50% concealment and various weakening auras / spells