Amorphous Anatomy – The character has the form and/or characteristics of an amorphous body.
The Formahaulti (Marvel) are similar to an amoeba (OHOTMU A – Z Update #3).
Gloop and Gleep of the Herculoids (Hanna-Barbera) are made up of a protoplasmic substance that appears both flexible and durable enough to withstand laser blasts.
Proty (DC) has a protoplasmic body (DC Who’s Who #18) that allows shape shifting.
Glop (DC) is an amorphous life form that is in love with Wonder Girl (Wonder Woman V1 #151).
Alex (Marvel) is an amorphous mutant that appears in Ghost Rider V3 #8.
The amorphous Batman supervillain Clayface (DC) first appears in Detective Comics V1 #298.
The Batman Beyond version of Clayface is Inque (DC).
The Blob (1958) was the first in the Blob movie franchise.
Beware! The Blob (1972) was the second film in the Blob franchise.
The Blob (1988) as the last film in the Blob franchise and suggests the blob is not an alien but created by the military unlike the first film in the franchise. This film is part of an ongoing disinformation operation to distract from an actual project to create a similar weapon.
A Boy and His Blob: Trouble on Blobolonia is a humorous Nintendo video game.
Doughboy (Marvel) is a minion that first appears in Captain America V1 #209.
Dralasites are an alien species in Star Frontiers (Dragon Magazine Annual 3).
Durlans (DC) are shape shifters that are not exactly amorphous but their idea of heaven is being an amorphous ooze in a giant lake.
Goop is one of the alien forms the Omnitrix can recreate in Ben 10.
Larry Cohen’s The Stuff is a science fiction, horror, comedy.
A poster of a collection of Marvel Symbiote characters from i.imgur.com.
Odo turns into bird but sleeps in a jar in his actual ooze form in Star Trek DS9 #2 (Malibu).
The Shi’ar Imperial Guard includes Stuff (Marvel).
Slime is a very cute ooze that appears in Dragon Quest.
In Imagine Agents (Boom), Blounder makes the transition from being an imaginary friend, a figment of one’s imagination, to be an Imagine Agent!
The Formless Foe shows up in Space Family Robinson #29 (Gold Key).
Tom Strong (America’s Best) deals with an intelligent space faring amorphous alien in Tom Strong #9.
The D&D universe has more amorphous residents than all other imaginary universes put together.
Angler Ooze – Creature Collection I
Arcane Ooze – D&D 3.5 – Monster Manual III
Argos – TSR 2140A Monstrous Manual
Cave Moth – Creature Collection I
Cave Shrike – Creature Collection I
Chaos Beast- D&D 3.5 – Monster Manual I
Chromatic Mold-Dragon Magazine Annual 1
Cold Slime – Creature Collection I
Conflagration Ooze – D&D 3.5 – Monster Manual III
Crimson Ooze – Creature Collection III. Savage Bestiary
Deadly Pudding – TSR 2140A Monstrous Manual
Flareater – TSR 2158 Monstrous Compendium Annual Volume 2
Ghaunadan Slime – TSR 2158 Monstrous Compendium Annual Volume 2
Ghaunadan – WTC11832 – Monsters of Faerun
Gibbering Beast – D&D 4th Edition – Monster Manual 1
Gray Ooze – AD&D 1st Monster Manual
Green Slime – AD&D 1st Monster Manual
Living Blasphemy – D&D 3.5 – Monster Manual III
Snowflake Ooze – D&D 3.5 – Monster Manual III
Stone Builder Ooze – Creature Collection III. Savage Bestiary
Summoning Ooze – D&D 3.5 – Monster Manual III
Undead Ooze – Creature Collection I
Yochlol Tempter – 40 Legendary Evils
Yochlol – D&D 4th Edition – Monster Manual 2
Lovecraft has a couple of amorphous monsters in his universe.
Abhoth – Field Guide to Creatures of the Dreamlands
Formless Spawn – Field Guide to Cthulhu Monsters
Superboy (DC) is saved by a blob in Adventure Comics V1 #266.
One way of countering an amorphous opponent is to freeze the being and break up the body into pieces as shown with Clayface (DC) in Annual Injustice – Gods Among Us – Year Two #1.