How would they react to explosions (such as fireballs and the like?) we have both heat (which they like), and sound (depending on your take on Fireball and similar spells - Boom vs Woof!). Go to Comment
This fits the challenges and links it is associated with, and I love the imagery of it.
It may be hard to use in many Sci Fi campaigns due to the difficulty of anyone encountering these beings, but I think it could fit well in a Supers game, if you have heros in the Superman/Silver Surfer level of power available. Go to Comment