Hades

Hades is the very embodiment of inexorability. His certainty is not a pose, but a fundamental quality of being, a cold given, like the granite bed of an underground river. He does not doubt, does not waver, for his power is absolute and eternal. This certainty engenders an absolute, chilling indifference. He does not hate, does not love, feels not the slightest interest in the passions, hopes, or sufferings of the living and the dead. His gaze is the gaze of eternity for a moment: worthless, devoid of meaning.

His cruelty is not a flash of rage, but systematic, calm, and dispassionate. It is the cruelty of the very law of the universe: death comes to everyone, the sun does not ask whether the grain is ready for the heat, nor winter whether the flower is ready for the frost. He is the final arbiter, and his judgments are not malicious, they are simply carried out. It is useless to beg a glacier not to crush a ledge, or to try to melt a diamond with tears. His heart is not an organ, but a black hole, absorbing any attempt to reach it. He is not evil. He is the end. And this is his ultimate, terrifying cruelty.