Steed of Slaanesh

Steeds of Slaanesh go by many names: Flesh Lickers, Tongue Flayers, Degraded Ones, '''Whips of Slaanesh. '''They are strange, disturbing creatures that roam in herds along the borders of the Realm of Chaos. Gifted to Champions of Slaanesh or sometimes ridden by the alluring Daemonettes, the Steeds are excellent servants, carrying their riders across uncertain terrain with natural grace and incredible speed, while lashing out at foes with their whip-like tongues.

Like all creatures of Slaanesh, the Steeds have a perverse beauty, combining elegance and sleekness with an unnatural appearance. They are bipedal, with a body shape not unlike that of an ostrich, sans feathers. It has two long, feminine legs, and a crest of vivid green hair that runs down the length of its back. The glossy fur on its legs and upper body is typically lavender, whilst the head, tail, and underside are pastel yellow with mottled deep red markings. About halfway down its long neck, there sometimes grows a vertical row of breasts, marking this thing as a creature of the Serpent. The most disturbing quality of this creature is its conical head equipped with a sphincter-like mouth. Flitting out from this orifice is a long, electric-blue, whip-like tail that ends in a sharp barb.

The Steeds of Slaanesh are rarely encountered away from Daemonettes or Champions of Slaanesh, but when they are, they can be as much of a threat as their masters. Steeds, though dim creatures, are filled with natural cunning and are expert hunters who like to toy with their prey. They may drag off a townsperson whose death cries last for days, driving the locals mad with fear.

Source

 * Warhammer Fantasy RPG 2nd ED -- Tome of Corruption (pg. 229-230).