A modern staple of fantasy legends, the Slime Monster is an amorphous, shapeless, gooey creature best represented by the original Dragon Quest Slime. They are typically weak, but certain slimes, such as massive ones, ones made of special materials, or ones that are immune to damage, can be quite dangerous and deadly. Its usual attack is to engulf its prey.
The Slime is an iconic creature from Dragon Quest, but the existence of slime monsters dates back at least as far as Dungeons and Dragons, to the Gelatinous Cube. Which is suggested to be an invention of Gary Gygax.
The gelatinous cube is an invention of Gary Gygax, and first appeared in the Monster Manual (1977), rather than being lifted from outside sources and adapted to a roleplaying setting, as were many mythological monsters like the minotaur and dryad.
However, similar blob-like monsters date as far back as the year 1958, from the cult classic flim "The Blob".
Unfortunately, I can find no reference to what might have inspired The Blob OR Gary Gygax's Gelatinous Cube.
So I ask - what work of Fantasy/SciFi first introduced the concept of a monster that:
- Is made of slime/goo
- Is shapeless/formless
- Attacks by engulfing its prey