[@Fubsy]

But Hades is boring.

You should have her rule over some sort of "rainbows and Happiness" afterlife which is so cute and innocent it's vomit inducing.
Her servitors are majestic flying unicorns. That kill people by impaling their flaming horns, and trampling them to the ground.

Then again X's plane is essentially a giant desert with a library build in the center.
But I've already thought up of his servitors, and they are quite fun and  befitting of a god of mysteries.