They Like You for Your Brains

Bored with your monsters? Tired of the same old thing? Here’s a couple of mechanically-unchanged stalwarts with a shiny new finish:

Moon Men
Mysterious beings that appear by night and move silently to feed upon the minds of humans. Moon Men appear as tall humanoids whose heads are hidden beneath gleaming, featureless domes. These scientist-sadists rarely make any attempt to communicate, and treat other sentients with clinical detachment, as if they were mere cattle.

These are good ol’ mind flayers--because tentacles are so last year. The only change would be to dispense with the tentacle attack--or maybe keep it and have pseudopods emerge from a Moon Man’s liquid metal head. With that option, they might literally eat brains, but otherwise its the mind they’re after, not the meat.

Though the picture is Mysterio, the name was inspired by a pulp hero with a similar look.

Brain Parasite
“The brain was in a serious state of liquefaction. Only the brain-stem had any discernable structure. A puncture in the back of the skull likely indicates where the creature insert its venom...Yes, that’s the thing in the preservative vat there. It was completely invisible--or more precisely, simply, unseen--on the victims back until it was killed.  And by then it was too late.”

These reskinned intellect devourers look like the zanti from the Outer Limits and act sort of like the mutant spiders from Metebelis 3, the titular Planet of the Spiders in Doctor Who. I imagine they inject some sort of a toxin into the skull, dissolve the brain slowly, and suck out the sweet, sweet juice over time.