This is Reaper's Mind Flayer / Tyrannid crossover monstrosity. Pretty nifty. Picked up three of these guys and decided to try large scale OSL. The material is the Reaper Black line of plastic/resin.
Reaper Bones. What can I say, they are awesome. Very little to zero assembly required. These models were just a couple parts each, and went together very easily. Mould lines were easy to remove.
Primed with Badger Stynlrez primer, brushed on. Miniatures painted purley in oils. Mostly Winsor & Newton Winton line. I painted them all at the same time (hooray for oil paints!). Took about 4-5 hours total with futzing with the colors, amping up the brights and muting the rest. I've read online that yellow light is the easiest illusion to pull off, and blue is the hardest. Personally, I think the red fire light is the easiest. Since fire isn't a single color, and we all have a pretty comfortable understanding of how things look like lit by fire, it is pretty sanzzy. I think the blue one turned out better than the yellow one. This might not be an issue with the colors so much as myself. Probably could have made the yellow light brighter near the source and fade more over distance. However, I think the yellow one has a lot of cool details and reflection bits added (hard to tell with my potato camera) that are neat. Sealed with some matt varnish from Reaper Miniatures.
Custom cork with joint compound, topped with Sculpy clay rolled with the Dark Runes texture roller from Green Stuff World. The additional tentacles are also done in Sculpy using Green Stuff World's Roll Maker. Gotta say, the extra firm Sculpy is the way to go using the texture rollers or the roll maker. It is tougher to work with, but it holds the imprints much better, and stick WAY less. Softer Sculpy is much harder to work with. Everything was covered in a mixture of Mod Podge and black acrylic paint.