Psychic Elemental
Extremely dangerous elementals that could retrieve and manipulate information in the thoughts of living creatures. Wild forms were completely wiped out during the Terraforming Era, but fragments of them are still in use as Service Spirits.
Colloquially called "Brain Lickers."
Slug-like
as service spirit: 5-6 inches
High: wild types categorized as calamity class at minimum
"Chewing" or "licking" surface thoughts
Attempts to alter the motivations of attackers or disorient them by consuming their short-term memory
Anywhere with a self-sustaining population of sentient beings
Mainly solitary - too many individuals in one place will starve each other out
Continued exposure of living individuals to a Psychic elemental's feeding will leave "saliva" remnants within brain tissue. These coagulate into eggs that develop into polyps and eventually hatch out of the host brain.
None - not capable of much movement
Surface thoughts and memories of living creatures
Sea slugs, leeches, eels
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Continued exposure of living individuals to a Psychic elemental's feeding will leave "saliva" remnants within brain tissue. These coagulate into eggs that develop into polyps and eventually hatch out of the host brain.