Whew, we aren't far into this list and it's already getting steamy in here. Volvagia is the fire dragon that resides in Ocarina of Time's Fire Temple (or The Hidden Palace in The Adventure of Link). The temple itself is so hot that if you aren't a goron you'll need some sort of heat protection to even go in there. To live in a place like that, you have to be pretty hot yourself. And indeed, Volvagia is hot. It can hide in lava, breathe fire, and burn you just for invading its personal space. It's also known to eat gorons, and one can only assume that it would do the same to any other creature than wanders too close. If normal logic holds true, it's probably even hotter on the inside, so you might want to steer clear of this one.
In some games there are actually enemies that live in the lava and only come out to attack. From the Mario series, two such enemies are Podoboos and Blargg. Due to his greater size, Blargg wins his spot on the list as a big, beautiful baddie. It's unclear just how hot Blarggs are, but they seem to be utterly unperturbed by the lava surrounding them, so we can only assume that they are around the same temperature as molten lava. It may even be the case that the creatures are made of lava themselves, though it is more likely that they are some kind of dinosaur and simply appear to be made of lava because of being covered in it.
Know an obvious hottie that I missed or have a burning question? Leave it in the comments!