1d20 Tanar'ri

1. Holgoch, a Dretch. A philosophical creature, but a ravenous one. Keeps dismembering its debate partners. Will mock you if you mention that it is a Dretch - “A category so broad as to be useless, morsel." 
2. Chilperian, a Vrock. Deeply in trouble. Paranoid and gluttonous. Gorged itself on soul-larvae meant for the flesh-lined table of Orcus. Forced to flee Thanatos. Feels it can no longer keep running. Convinced it’s being hunted. 
3. Koltif, a Dretch. Once boss of a hideous maze-like district of Lemoriax, the Twisted City. Huge claws. Two heads, a sign of favour from Demogorgon - except, it was embarrassed in combat, by a mere mortal. Its second head is now dead and rotten, a fly-ridden weight on its neck. Wishes to reclaim its fame and station. 
4. Ukylhk, an Uridezu. A ratlike, hunched thing, covered in weeping welts. Its head resembles a rat’s skull, crowned with a fused rib cage, bloodied and covered in strips of meat. Fervent, vicious servant of Orcus. The fervent devotion displayed by this creature is extremely unsettling and repulsive to other Tanar’ri. It’s usually left alone to tend to its personal shrine to Orcus, unless needed for errands. 
5. Schugan, a Barlgura. This thuggish thing has four arms, and a tongue the length of a horse. Considers itself prince among barlguras, although this is certainly untrue. Has found itself tricked into the service of Graz’zt. Bitter. 
6. Yrelgor, a Babau with the face of a weeping child. Red-black, with barbed claws and a prominent hooked spines along its back. It breathes reeking clouds of blue smoke when angry. It wears a moth-eaten cloak of purple velvet. It is a member of Graz’zt’s court, occupying the closest position a Tanar’ri can manage to ‘castellan’. It’s a sycophant and a coward. 
7. Haspigor, a Vrock. Proud and gigantic among it’s Vrock cousins. Shimmering red feathers. Believes itself the spawn of Pazuzu, an Obyrith Lord, and true heir to the title ‘prince of demons’. Believes its aura of terror and venomed claws will allow it to stand up to Demogorgon. This is unlikely, to say the least. Its beak has a wicked hook. Battlecry is reminiscent of a pen full of pigs screaming in pain. 
8. Ja’acian, an Armanite. Adamant armour nailed with silver spikes to its upper body. Head has a long, distended jaw with maggoty gums and a whipping, spiked tongue. Hooves are all hooked and spiked with stolen green steel. Arrogant and violent, even for a Tanar’ri. 
9. Naloscag, a Maurezhi. Distended, eyeless ghoulish face. Wears a cloak stitched from flayed mortal faces and naught else. Travels with a gang of hideous ghouls, which lurk with it through tunnels and sewers in search of prey. 
10. Bovuulch, a Chasme. Works for various cults in the City of Doors, in exchange for copious amounts of raw meat. It shapes horrid little statues of itself out of the meat, in a pillared cave on the Plain of Infinite Portals. It calls this cave its Grand Temple. It wants to get itself a cult. 
11. Gerigan, a Barlgura. A giggling, feeble sadist, with long, bony limbs and bluish-white fur. Many half-formed, cataracted eyes have sprouted along the undersides of its arms and back. It considers itself a prophet. 
12. Ik-chit-kilchat, a centipede-like Adaru. Face of an elderly woman on a scuttling black centipede, with seventy red legs. Lets out stinking clouds of brownish vapour as it moves. Collects fingers and toes. Primarily Baatezu, but treasures the toes of celestials and mortals. It’s prize - the long toe-claw of an astral berbalang. 
13. Augolich, a Hezrou. Replaced its teeth with huge shards of flint. A minion of the vicious godling Vaprak. Has an iron cage wired onto its back which contains a Hound Archon called Idalia. Augolich uses the Archon’s suffering to power grim magics. Its favourite sound is screaming, of any kind. 
14. Zagarzjec, a Nabassu. A leathery, dark green thing, with long, tapering limbs covered in hundreds of tiny tendrils. Massive, reflective white eyes, and translucent wings. Completely deaf and constantly howling. Hunts around the edges of the tiny mortal communities that struggle along in the Abyss, preying on the lonely and afraid. 
15. Gor-Gorith, a Molydeus. One of Orcus’ most vicious servants. Hunting Chilperian the Vrock. Its two heads, snake and wolf, viciously despise each other. Wears a cape of rotting baatezu limbs, harvested from the war-fields of Avernus. Wields a flail made from the spine of a storm giant, which crackles and smokes as the demon wields it. 
16. Xakokoohl, a Nalfeshnee. Missing its jaw. A second jawlike structure, a tongue covered in tiny, black teeth, has taken up the job. Constantly dribbles squirming ichor which transforms into flies and worms when it passes. Pulsing tumour on upper arm causes agonizing migraines in nearby mortals. Considers itself on the verge of ascension to Demon Lord. 
17. Draggonach, a Klurichir. Has viciously acidic spit. An Obyrith, Kholokaan, lives inside a cavity in Draggonach’s head. The creature is unaware of it’s passenger, feeling no pain, and believes the Obyrith’s whispered commands to be the workings of his own diseased mind. Wields two flaming axes. Kholokaan can poke out from a ragged hole on the back of Draggonach’s neck - a sinuous, slime covered worm, with five protuberant mandibles and a baleful green eye between them. 
18. Hurygorum, a Nalfeshnee, who suffered 20 years of embarrassing servitude, bound to an evil paladin by a powerful spell. Has returned to The Abyss to find it’s domains in disarray. Is mechanically executing its former lieutenants and myrmidons, where it can find them. Thick, oozing gut is home to a hive of creatures that resemble spider-legged lampreys, which it sics on it’s enemies. 
19. Golgk, a Goristro. A prodigious creature. Has a gigantic, front heavy head, wrapped in ratty black silk and stabbed with jewelled pins. Born in the flesh-pits of Baphomet’s laboratories, but exiled for being just too stupid. Has found its way to the court of Graz’zt, who keeps it around for muscle, even if he can barely stand the sight or smell of it. In his spare time, Golgk likes to pop quasits like grapes, and bully mortal residents of Zelatar, the City of Lies. 
20. T’thyghonaar, a Myrmixicus. A 40-foot long serpent, with a dragon skull head, four scything limbs and a lamprey mouth at the tip of its tail. Swims the brackish, monstrous oceans of the Abyss, not powerful enough to escape the whims of its creator, Dagon, but too strong to be commanded without some repercussion. Likes to hunt and eat surviving Obyriths, to spite its hated creator. Wields a giant scythe forged out of a thousand stolen green-steel blades. Regularly swims down the Styx to Hades, to hunt Yugoloths and destroy ships.