1D20 Random Vicious Gargoyle Encounter Table For Your Old School Campaigns

The souls of the worshipers that make bargains with the powers of Chaos become trapped within the Outer Darkness. These souls attract a myriad of particles of stone, dirt, dust, and worse in the darkness between worlds this becomes a pseudo living body for the monster. Minds, former lives, personality including individuality are finally scrubbed clean by the ever changing forces of chaos & mutation. These beings become trapped within living stone like flesh that becomes a prison of living Hell for centuries. Black wizards, sorcerers, etc. of the lowest orders  call them into the world of the living.They serve the will of their masters longing to rip into the flesh of trespassers, & adventurers. There are thousands of these beings floating around the orbit of Saturn & Jupiter awaiting the beckoned call of the Great Old Ones & many gods of evil intent.

"One was a snarling, murderous, cat-headed monster, with retracted lips revealing formidable fangs, and eyes that glared intolerable hatred from beneath ferine brows. This creature had the claws and wings of a griffin, and seemed as if it were poised in readiness to swoop down on the city of Vyones, like a harpy on its prey."

Clark Ashton Smith, The Maker Of Gargoyles

 These monsters are summoned by a simple 'Monster summoning' rite but the caster must have an absolute command of these raving beasts for they are of the lowest intelligence. But they have an incredible cunning that only top apex predators have.
They must be commanded to guard a particular area or territory for they are violent and fickle creatures at best. At worst they are raving psychotic monsters of most terrible aspect. They eat what they can catch and haunt ruins, dungeons, and other places of black occult activity.
Many black magick cults promise immortality in exchange for the souls of their members, which they grant after a twisted fashion. These souls are given over to demonic horrors that weave bodies of stone like flesh and dust around the newly created monsters. These monsters vent their violent & angry tempers on the world of living with a vengeance.

"Then, as he still gazed irresolutely at the group before him, and its vague reflection in the glass beyond, there came a thunderous crash, and the panes of the window with their pictured scene were shattered inward in a score of fragments. Ere the litter of falling glass had reached the tavern floor, a swart and monstrous form flew into the room, with a beating of heavy vans that caused the tapers to flare troublously, and the shadows to dance like a sabbat of misshapen devils. The thing hovered for a moment, and seemed to tower in a great darkness higher than the ceiling above the heads of Reynard and the others as they turned toward it. They saw the malignant burning of its eyes, like coals in the depth of Tartarean pits, and the curling of its hateful lips on the bared teeth that were longer and sharper than serpent-fangs."
Clark Ashton Smith The Maker of Gargoyles

All entries inspired by Clark Ashton Smith's The Maker of Gargoyle story.

From the Advanced Dungeons & Dragons Characters Coloring Book (1983)

     These monsters gain a +1 to their damage in melee due to the violence that warps & colours their perceptions. They hate & fear priests and clerics of religions of order which they will attack on sight being reminded of their inhumanity & depravity.

 1D20 Random Vicious Gargoyle Encounter Table 

1. Garusai - A gargoyle that once served a black magician and picked up 1d4 black magic spells of first level. This monster delights in taking out warriors and fighters whenever it can. It has a small stash of magic items that it will use to bargain with for its freedom from its dark god master. It loves to carve its name into its victims after a kill. 
2. Brarus Otrus - A former gladiator and black wizard who was done in by her husband but now has become a monster of the nether darkness, she takes her vengeance out on all living beings and has a yen for the lower intestines of her victims. She can read  Latin and Hyperborean, she loves to recite black poems as rips apart her victims. 
3. Htrrus Thal - The former black wizard of a coven who became the sacrifice to his own dark god. This left the soul of the wizard a hollow and terrible thing that was scrubbed clean by the forces of darkness. Now it longs to hurt & maime any it comes across often keeping and eating its victims hearts. 
4. Arusi No - The soul of a boy given the form and violence of a monster through the means of black magick. This vicious monster longs for its own innocence but takes its anger at its fate on any it comes across with vicious and dangerous claws. 
5.  Trysu Frus - This former fat man and killer for a dangerous black cult is now the guardian and assassin for several black occult groups that rely on its talents to clean up their messes. This gargoyle has twelve minor treasure caches scattered across the country and its looking for a black wizard to break its condition and free its soul. Until then it vicious kills send chills up the spines of locals and its name is used to frighten children. 
6. Brus Tri Rursu - A former prince of power who was given over to the talons of a black god. This gargoyle loves to torment and hunt the rich as well as stupid for pay of black cults. It hunts on the wing and leaves 'presents' of dead animals and pets for its victims. 
7. Aruro The Wanderer was once an explorer from another world that pissed off a black wizard of the darkness who feasted on the fool's soul. Now it passes its time reciting poetry and hunting the enemies of the wizard that created it. 
8. Orus Rex - The king predator is a former king's hunter that slept with the king's wife and maid servant. His privates & brains were given over to a cult of black wizards and this mighty hunter was the result. He loves to hunt lovers, cheating husbands and black witches. Orus has a forty percent magick resistance created by his dark masters who nightly blast him with the blackest curses. 
9. Boicyal has become the avatar of the Dark Ones to a local cult of 1d6 Lovecraftian cultists lead by a dark wizard of 4th level. This gargoyle has come to relish its position of murderer and assassin to its master. A violent and yet silent soul, this being's eyes betray its thoughts of wanton chaos and depravity.
10. Thrus The Myriad is a collection of souls knitted into its current hideous form that serves 1d6 black cabals of wizards. This thing loves gems and to collect the eyes of wizards so that it can stare into the black abyss of the final rewards after it makes a kill.  It has 1d6 souls stores in bottles along its hide out. 
11. Bris Thal - A former princess who willingly walked into the darkness and embrace of her gods. She has served many masters and has collected hundreds of treasures in her time. She has become a power broker to several black cabals whom she pits against one another to match her price. She is a power broker and information seller flitting from world to world on her black wings. She retains the vicious and violent nature that she had in life. 
12. Rue rie Rex - The king of the dungeon has become the head of a cult of gargoyles who raid other black cults for their treasures. He will work as a mercenary for any black cults who may meet his price. His gargoyles are highly cunning and have high chance of casing their own clients for a raid. 
13. The Blood Soaked Warrior is a gargoyle who serves the blood handed cult and has for centuries. He has no proper name is actually an extension of his dark master's will but there are those in his clutch who whisper he was once a prince who was wronged. As the centuries dawn he might have become more self aware and then seek the dead world where his legendary legacy awaits.  
14.  The black priestess Kell is a gargoyle in a long line of warriors who serve a small goddess who carries out an agenda of guarding dungeons and treasures. She has a string of clients 
15.  Gru's Rell a former psycho killer who was punished by being made into a perfect instrument of vengeance of a black cabal of sorcerers. He now carries out the wishes of his black hearted masters will relish and longs for the time when their entrails will decorate his claws. He moves from world to world carrying out a streak of violence as a gesture to his black god. 
16. Resu Thurs - Created on a Thursday in the month of the black goddess this gargoyle has obsession with  time and kills each Thursday so that he can add another cat's eye gem to his thousand and three collection marking his kills. He is convinced that his freedom will be granted when he collects one million kills. 
17. 'A rrus The Black Mother' a former queen who was given the form of a black gargoyle warrior to wreck vengeance on her enemies. Her form was merged with her warrior husband's to make a better murderer. Her violence has claimed the lives of many and she guards the most precious of her cult's treasures. 
18. True' Val The Cat Headed - A warrior gargoyle who was the head of a black cleric cat cult whose body was warped into its current form to guard the cult that he founded. He guards all of the holy of unholies of his former cult now. Able to cast 1d4 second level black magic spells this hunter is without peer and collects the ears of Elves which he hates with an incredible violence. 
19. Rrus Rerllei A former cult of Cthulhu priestess who was given over to the vengeance of a cult of Hastur.  This priestess now guards her former rival's cult members but she has a mind of her own and has murdered twelve cult members over the centuries and secreted away two treasure boxes.  When her curse comes true her current employers will find themselves as sacrifices for her dark god. 
20.  Areus The Undying is a former priest who turned himself into a gargoyle to save his black cult from twelve warriors of Law. His sacrifice proved his cult with their much needed sacrifices and he was granted immortality. He will regenerate wounds as a troll and has the abilities of a priest of darkness. Very few live to find out these secrets as he guards a Lovecrafian relic of dangerous aspect. He is vicious, violent, and a dangerous hunter of souls.