You didn't have to fear many things in the Kingdom. However, The Speaker was undoubtedly one of them.
The Speaker, also known as the Voice of God, also known as The King's Hand, also known as The Grand General of the Kingdom's Armies, is as you can tell, a powerful figure in the afterlife. He (or she) bears a crown of flames, that is said will instantly incinerate any demon or fallen Angel that comes near her (or him). The face has no specific features. The eyes are empty pockets of skin stretched taut over his sockets. His (or hers) face bears no mouth, where they would be one there is the same skin stretched over the faint outlines of teeth and jaw. It is rather more a skull than a proper head, with a film of snow covering it.
When the Speaker speaks, it does not speak with one voice, but with two. A male and a female voice, speaking in perfect unison. The Speaker's body is androgynous, representative of the fact that the Speaker encompasses the entire Kingdom and the will of the King itself, which does not associate with one gender or the other. In the World (that is, the mortal world, as opposed to the immortal Kingdom), it is common to refer to God as "he" or "her" depending upon the speaker, matching God's pronoun with your own. A man would refer to God as "he" and a woman would refer to God as "she".
The Speaker is the conduit through which God's will is passed down to the Kingdom, and from there to the World. The Speaker adheres strictly to the God's commandments, which the Speaker originally transcribed and passed on to the denizens of the World, and the slightest variation is met with punishment. At times of war, the Speaker leads the armies into battle.