I was trying to throw together a list of monsters either made of or partially constructed with fire or magma/lava. These could be minis made for Hell or in a magma cavern or where ever we could place over the rivers on top of the light boxes and have them glow or maybe an LED in them. So critters that could be made in the translucent dwarvenite and do a similar hide/show paint scheme.
Here is a quick start -
Fire Eels or Snakes
Giant Magma Turtle - Maybe with a removable hut like structure
Burning Hell Hounds or Wolves
Hard Skinned Lizard Men - with glowing underbellies
Burning Skeletons with flames and bones only, no clothes or armor
I'm sure there are tons more...
I didn't pull out a monster manual and it's almost been two decades. gimmie a break.