Here is some artwork that I did for RCFG. It isn't in colour (yet), but I thought some might find it interesting.
This lively fellow is a feral adult tentacled brain. Not as smart as the standard adult tentacled brain, but absolutely necessary for their life cycle. Feral adults paralyse humanoid creatures and implant tentacled brain eggs in their heads. Tentacled brains that do not go feral eventually have smaller tentacles but more potent eyestalks, from which their psionic powers emanate.
Good gaming all!