Vrock

Appereance
''This creature looks like a cross between a large human and a huge vulture. It has strong, sinewy limbs covered with small gray feathers, a long neck topped with a vulture head, and vast feathered wings.


 * Vrocks serve as guards to more powerful demons and as flying assault troops in the abyssal wars.
 * A vrock is about 8 feet tall and weighs about 500 pounds.

Combat
Vrocks are vicious fighters who like to fly down into the enemy and cause as much damage as possible. They prance about in battle, taking briefly to the air and bringing their clawed feet into play. Despite their advantage in mobility, the vrocks’ deep love of battle frequently leads them into melee combats against heavy odds.


 * A vrock’s natural weapons, as well as any weapons it wields, are treated as chaotic-aligned and evilaligned for the purpose of overcoming damage reduction.


 * Dance of Ruin (Su) : To use this ability, a group of at least three vrocks must join hands in a circle, dancing wildly and chanting. At the end of 3 rounds of dancing, a wave of crackling energy flashes outward in a 100-foot radius. All creatures except for demons within the radius take 20d6 points of damage (Reflex DC 18 half ). Stunning, paralyzing, or slaying one of the vrocks stops the dance. The save DC is Charisma-based.


 * Spell-Like Abilities : At will—mirror image, telekinesis (DC 18), greater teleport (self plus 50 pounds of objects only); 1/day—heroism. Caster level 12th. The save DCs are Charisma-based.


 * Spores (Ex) : A vrock can release masses of spores from its body once every 3 rounds as a free action. The spores automatically deal 1d8 points of damage to all creatures adjacent to the vrock. They then penetrate the skin and grow, dealing an additional 1d4 points of damage each round for 10 rounds. At the end of this time, the victim is covered with a tangle of viny growths. (The vines are harmless and wither away in 1d4 days.) A delay poison spell stops the spores’ growth for its duration. Bless, neutralize poison, or remove disease kills the spores, as does sprinkling the victim with a vial of holy water.


 * Stunning Screech (Su) : Once per hour a vrock can emit a piercing screech. All creatures except for demons within a 30- foot radius must succeed on a DC 22 Fortitude save or be stunned for 1 round. The save DC is Constitution-based.


 * Summon Tanar’ri (Sp) : Once per day a vrock can attempt to summon 2d10 dretches or another vrock with a 35% chance of success. This ability is the equivalent of a 3rd-level spell.


 * Skills : Vrocks have a +8 racial bonus on Listen and Spot checks.

Known Vrock
Double Diamond Triangle Saga by James M. Ward and David Wise.
 * Arrikk: From Hellbound: War Games, page 65
 * The Cuckoo: Standing Stone (presumably referenced again in Heart of Nightfang Spire)
 * Grzzlat: I2 Tomb of the Lizard King (on the random encounters table)
 * Jaazzpaa: Dungeon #25 "The Standing Stones of Sundown"
 * Rhunad: Heart of Nightfang Spire
 * Shaakat, Rejik, and Morbaat: The Paladins, book two of the Forgotten Realms'
 * Jenky: A horribly powerful Vrock that at one point had affairs on the Prime Material Plane.