The malformed existence that a Dark Fiend will create within material universe is based on a number of factors, not least being the perceptions of the individual or group entreating its presence. The intents and purpose of their Dark Master is reflected in their daemonic visage and appearance.
Those horrific beings conjoined to the ancient and terrible Lord of Skulls are dire warrior-things, dark of eye, blood-hued and bedecked with armour and weapons of brazen heritage. They are filled with bloodlust, posessed with supernatural bestiality, rage, ultimate frenzy and fury, and excel in arts of war and death. Their presence stirs men to bloodshed, their look turns the spine to ice with fear, and their bellows and war cries freeze those that oppose them.
The vile servants of the Prince of Misdeed are incarnate of the lascivious dreams and depraved imaginings of desperate malcontents. Their disgusting and foul nature is obsured by an aura of ecstasy and beauty, truly obscene in its falsity. Their grotesque conjures are conforted by visions of unnatural serenity, charm and lustful suggestion, driving reason from their toughts and causing unholy admiration and covetousness.
Those supplicants to the Architect of Fate who attract his supernal gaze will be gifted with bizarre, anarchic entities comprised of the raw magic of their master. They are a blaze of chaotic colour, shape-sifting and incorporeal. They are enveloped in an inconstant corona of energy, buzzing and shrieking with unearthly power, sparks of incandescence cascading from their bodies, piercing eyes seeing into souls.
Of all the nefarious devils that serve Chaos, the corrupt minions of the Pestilent Beast are the most physically grotesque. Embodiments of decay, plague and disease, their festering presence and unnatural stench is pervaded by miasma of flies and nauseating putridity. Their swollen sores, exposed innards, wart-strewn and pus-licked skin is sickening in the extreme.