50 Shades of Gray Ooze: Variant Monster Rules

William T. Thrasher
Only ooze has more ooze.

We here at d-Infinity are no strangers to oozes, and there is no ooze we find more compelling than the venerable gray ooze, a versatile gelatinous monstrosity with a history stretching back to the primordial dawn of the roleplaying hobby. Deceptively simple in form and ferocity, no two gray oozes are alike, coming as they do in a variety of flavors, textures, and consistencies distinguishing one breed from the next. Despite these rich variations, the manifold variety of gray oozes receive short shrift in even the most richly detailed bestiary. The teratologists here at d-Infinity hope to correct that oversight with this, our latest collaborative article. Read on, familiarize yourself with the classical gray ooze and marvel at every variation, mutation, and subspecies we unveil as we expound upon all fifty shades of the gray ooze!

From the Pathfinder Bestiary

Slinking their way through cold swamps and bleary marshlands, or sometimes even dungeons and caverns, gray oozes consume any organic materials they encounter. Despite its lack of intelligence, the gray ooze is a most problematic creature due to its transparency. While the ooze cannot easily climb walls or swim, its habit of lurking in the thick mud that lines the banks of marsh pools or lying in harmless-looking pools on dull-colored dungeon floors makes it dangerously easy to overlook and step on.

Some sages believe that the gray ooze is the result of a failed alchemical experiment, while others postulate that the first gray oozes spontaneously arose from a cesspit of magical detritus. Of course, these theories that gray oozes are not living organisms, but rather the alchemical result of an unfortunate mixture of rare caustic fluids and magical waste, are derided by many who dwell in areas plagued by the creatures but which do not have a long history of magical pollution.



XP 1,200

N Medium ooze

Init –5; Senses blindsight 60 ft.; Perception –5


AC 5, touch 5, flat-footed 5 (–5 Dex)

hp 50 (4d8+32)

Fort +9, Ref –4, Will –4

Defensive Abilities ooze traitsImmune cold, fire


Speed 10 ft.

Melee slam +6 (1d6+4 plus 1d6 acid and grab)

Special Attacks acid, constrict (1d6+1 plus 1d6 acid)


Str 16, Dex 1, Con 26, Int —, Wis 1, Cha 1

Base Atk +3; CMB +6 (+10 grapple); CMD 11 (can't be tripped)

SQ transparent


Environment cold marshes and underground

Organization solitary

Treasure none


Acid (Ex) The digestive acid that covers a gray ooze dissolves metals and organic material, but not stone. Each slam and constrict attack deals 1d6 additional acid damage. Armor or clothing worn by a creature grappled by a gray ooze takes the same amount of acid damage unless the wearer succeeds on a DC 20 Reflex saving throw. A wooden or metal weapon that strikes a gray ooze takes 1d6 acid damage unless the weapon's wielder succeeds on a DC 20 Reflex save. The ooze's touch deals 12 points of acid damage per round to wooden or metal objects, but the ooze must remain in contact with the material for 1 full round in order to deal this damage. The save DCs are Constitution-based.

Transparent (Ex) Due to its lack of vivid coloration, a gray ooze is difficult to discern from its surroundings in most environments. A DC 15 Perception check is required to notice the gray ooze. Any creature that fails to notice a gray ooze and walks into it automatically suffers damage as if struck by the ooze's slam attack and is immediately subject to a grab attempt by the ooze.


Variant Gray Oozes

The gray ooze adapts readily and swiftly to changes in environments, the simple structure of its primeval form and its method of using fission to reproduce all but ensuring that such changes occur. Listed below are two such variants that adventurers have encountered.

Crystal Ooze (CR 4): The crystal ooze is an aquatic variant that dwells in deeper waters than most commonly found in the gray ooze's beloved swamps. A crystal ooze has the aquatic subtype and a swim speed of 30 ft. The crystal ooze lacks the gray ooze's constrict ability, but it does secrete a paralytic toxin that causes those whom it strikes to become paralyzed for 3d6 rounds if they fail a Fortitude saving throw (the save DC is Constitution-based).

Id Ooze (CR 6): Perhaps the strangest variant gray oozes are those that have developed a rudimentary intelligence, including the ability to communicate telepathically with other oozes, or even the ability to blast enemies with pulses of raw mental power. Id oozes are advanced gray oozes with an Intelligence score of 2 (and thus gain skill ranks and feats—typically 4 ranks in StealthImproved Initiative, and Toughness), can communicate basic empathic information with other id oozes within 100 feet via telepathy, and can use lesser confusion at will as a spell-like ability (CL equals the id ooze's HD).

Density Ooze (CR 5): An alchemically active ooze, the density ooze has the ability to control the elemental density of its body. As a move action a density ooze may increase or decrease its density by one step. For each step it increases its density it gains a +1 natural armor bonus, +1 Strength, +1 CMD, and -1 Dexterity. For each step it reduces its density, it gains +1 Dex, +5 ft. of speed, and -1 to AC and Strength. A density ooze cannot alter its density more than five steps in either direction.

Leech Ooze (CR 6): An ooze hungry for blood and capable of absorbing it through a victim's skin, the leech ooze may attempt to drain the blood of its target after a successful slam attack as if if casting the vampiric touch spell (CL equal to the ooze's hit dice). A leech ooze cannot inflict acid damage as part of the same attack with which it uses it's blood drain ability.

Spawn Ooze (CR 5): An ooze eager to reproduce, as a move action a spawn ooze can infect a corpse with 1d6 polyps. After 1d4 rounds the polyps burst forth from the corpse as hungry gray oozes (apply the young creature template to these new oozes).

And this is only the beginning. Check back frequently as your favorite d-Infinity contribute their own variant oozes to this list. In time, we will be awash in all fifty shades of gray.