Slime Molds (list)

RENAME TITLE "MOULDS" not "MOLDS"

A collection of monsters or creatures, largely comprised of collections of small creatures that form together to create large identifiable masses that conform to various characteristics. These fit into three large categories: slimes & molds, which spread outwards from a source, producing a large bulk that will 'grow' over floors, walls and ceilings, typically in subterranean locations; metamorphs, capable of some mobility, comprised of tiny creatures that will reform themselves into solid shapes or 'limbs' in order to attack and consume prey; and puddings, oozes & jellies, that do not harden their bodies (ranging from semi-liquid to gelatinous), attacking prey by producing enzymes or acids that consumes flesh and other materials, among other effects.

Individual species are shown below (links contain substantial misinformation that departs from the original source - individual pages to be created on this wiki at a later time).

Jellies

• gelatinous cube, a nearly invisible transparent scavenger of dungeon corridors, secreting an acid-like digestive enzyme that paralyzes victims (is not described as an 'ooze' in the original Monster Manual).
• ochre jelly, resembling a giant amoeba, comprised of a pulpy, translucent mass that secretes a fluid that dissolves flesh.
• stun jelly, a form of ochre jelly that grows vertically over walls, typically with only a few inches thickness. Transparent, in torch or lamplight it will tend to reflect the surface beneath its mass, producing a camouflaging effect.

Metamorphs (distinct from shape-changers)

• lurker above, an large organism formed of many jelly-like creatures that proliferate and grow over dark ceilings, dropping to smother prey
• mimic, an organism capable of reforming its body into order to create heavy, hard pseudopods for attack; possessed of an intelligence gained through communal experience shared among the tiny creatures forming its mass.
• trapper, a variation of the lurker above; instead of dropping from above, it is an organism comprised of tiny crystalline creatures that wait on the floor in order to close themselves crossing its surface.

Molds

• brown mold, a subterranean furry growth that absorbs heat from its surroundings and from creatures passing nearby.
• gas spore (mold), a fibrous mold semi-contained in a floating gas bag a few centimeters across.
• russet mold, a reddish-brown mold spreading over the surface of the exposed water of mires, fens and bogs, known to release dangerous spores when disturbed.
• yellow mold, a subterranean growth that attacks creatures through the use of an asphyxiating cloud (note the link is misleading - see monster manual).

Oozes

• gray ooze, a gooey translucent mass that prefers horizontal surfaces while consistently moving upwards, seeking the highest flat surface it can locate in a subterranean environment. Secretes an enzyme that corrodes metal and eats flesh.

Puddings

• black pudding, a large coagulated pool of living organic mire that attacks through the secretion of acid that dissolves flesh, cellulose and metal. Will typically seep towards the low places; often found in pit bottoms.
• white pudding, a thicker variety of black pudding found outdoors in icy climes, where it waits in low places beneath the snow for prey.
• yellow pool, a 20-foot diameter mass that rests as a thin, watery fluid; once entered, the pool will congeal while fibres at its base grab victims until the pool can turn rock hard. The victim is slowly digested, often experiencing agony for several hours before death occurs.

Slimes

• dragon vomit slime, a brightly colored mold dwelling in sub-arctic wilderness, often growing to cover several acres over the course of a summer season before retreating again in winter.
• green slime, a sludge-like growth resembling a bright green, sticky wet mass that prefers the upper walls and ceilings of caves, sewers and passageways, dripping when it senses movement below.

See,
Identify Slime
Slime Molds (study)