If you lived deep inside a glacier, far from the light of day and the warmth of the sun, you would hate heat. Its very existence would threaten your home, your habitat, your environment, your belongings, the resources on which you rely. Even the tiny flame of a torch, which could have no effect on the ancient ice down there, would symbolise the power which warmth has over cold. You would want it extinguished, stamped out. You would see its invasion into your home as an affront. And you would want to eject or kill any warm-blooded intruders from the surface who might bring the threat of heat into your frozen world.
This is the mentality of intelligent beings in the depths of a glacier dungeon.