A bunch of my demons are linked in my signature. I think those are most of the demons I've made, though I'm currently poking around with the Messenger Soul of
@TenfoldShields ' Mazscyllic.
Speaking of that Messenger Soul...
Rumah, the Lantern Upon the Deep
Demon of the Second Circle
Messenger Soul of the Archoness of the Abyss
When a demon sails upon the seas of Kimbery, and the darkness of the Ebon Dragon eclipses the light of Ligier overhead, for most it is a sentence of death. The indigo sea is near-invisible against the darkness of the sky, and waves the size of hills can overtake a ship without notice. The faint light of the dying stars offers little aid - but there is one hope. In such circumstances, demonic sailors pray for the glimpse of a dim red light across the dark waters - for that light is kept by Rumah, the Lantern Upon the Deep, and within it even demons can find succor. Some say that the light is a lure which will entrap the one who follows it - but if this is the case, it is not because the sanctuary is false, but because the relief it offers is all too real.
Rumah is a craftsman and lighthouse-keeper by trade, but one would not guess this by looking upon their naked form. In themselves, Rumah takes the shape of a great, pale worm crowned with a halo of delicate crimson feelers and eyes like black pearls. Through their pale skin faintly shines the substance which gives them their name; a strange ambergris which glows in the hue of cinnabar, and which they can bring forth from their mouth to produce objects in all manner of shapes. However, this shape is rarely seen by others, for Rumah finds their own form repulsive and goes to great lengths to conceal it, changing their size and hiding within cunning constructs built of the nacre their skin can exude, and with which they prefer to interact with the world. It is only on rare occasions that Rumah will take their full shape, a worm greater in length than the most splendid sea-vessels of the Realm, armor themselves in steel-hard nacre, and go to war as a writhing, smashing storm of flesh.
This is a rare occurrence, though; it is difficult to rouse the wrath of the Lantern Upon the Deep, whose heart bleeds for the countless demons lost upon the cruel seas of Kimbery. Thus, they build great lighthouses of nacre and stone, and set atop them guiding statues of their ambergris. In the light so shed, storms and waves are calmed, winds subdued and venoms and diseases halted - though not cured. Towns quickly grow at the foot of these beacons, where sailors and castaways alike seek for shelter. Rumah appoints governors in such places, those they believe will rule wisely in their name - though they have never been able to resist any sign that their benevolence is recognized, and many such satraps are mere flatterers who squeeze their populace dry of value while delivering glowing reports to the reclusive Lantern. Such tributes soothe Rumah's heart and offer hope to them that perhaps one day their mother might overlook their pathetic appearance, and forbear to embrace them once again. In aid of this, she sends missionaries amongst her people, preaching of a deeper sanctuary, even more benevolent, and on such promises demons walk into the sea and down, down to the abyss. Mazscyllic has yet to grant such an audience to her reviled child, but accepts Rumah's gifts with silence.
Summoning (Obscurity 3/6): Sorcerers summon the Lantern Upon the Deep for the use of their ambergris, their steel-hard nacre and their knowledge of the making of cunning automata and constructs. The Lantern is easy to flatter and persuade with gifts and over-wrought thanks, and so many sorcerers have used their light to halt plagues to give time for treatment to take place, incorporated their ambergris into artefacts to ward against poison, or used their might to anchor spells to command winds and waters. In a few places in Creation, organic-looking pillars of nacre bear red lamps aloft, whose light shimmers by night on glass-smooth seas.
The Lantern Upon the Deep may escape Malfeas when a ship is lost on the sea and the crew prays for deliverance, but the only one who could intervene is dead or close to death. In such circumstances, Rumah may slip the bonds of Hell and inhabit the body of such a one, setting a new light to guide ships to safety and calm the seas. They gain Limit whenever their worm-form is seen by others without their consent - a consent they rarely give.
(Credit to
@TenfoldShields for Mazscyllic; to be found in
The Dialogues of Iridescent Sin)