These creatures are the dumbest of their kind and most likely lumbered right into a forest fire to see the pretty lights. But now they are badly burned, half their body or more scarred bone-white or charred and oozing depending on how recent the fire was. They are in terrible, constant pain and thus unpredictable and very dangerous. (may fight or not but once fighting never roll for morale, +2 to hit and damage, will fight for an additional 2 hit die after all its hit points are gone)
They tend to come down into the lowlands wandering randomly or looking for easy to catch prey like fat merchants.
They are one of the few reasons human rangers work in groups.
Elves treat them with great caution attempting to lure them into icy-cold mountain streams, which soothes their pain, and then dispatching them with arrows to ear or eye.
St Boll was said to have laid healing hands on one as it crushed him to death in its grasp. The calmed creature became a protector of the local church for the rest of its short life.
Thanks to Richard in a previous post for this idea. Has there ever been a supplement or module that provided multiple maps for the same area in different seasons? I don't recall any. I think it could quadruple the interesting bits of a small starting sandbox. Imagine mountain trails snowed impassable in Winter. Fords flooded in Spring. Different trade routes, pilgrim routes and road encounters. Festivals. Different wandering monsters. Weather. Man, this really makes me want to try and do it.
ps did the 5e playtest not come with a map? Because I'm getting a bunch of hits looking for "Caves of Chaos map" leading to this post. Or maybe they made a new one and people want to compare it to the original?