These are the people who have been corrupted by Nihil, and turned into his own personal informants/assassins/spies. Unlike the rest of his armies, they stay in Remnant and Ru'uan, and remained so after Nihil's banishment. Now, they wait for their master to be freed, gathering information and gaining allies till the fateful day when their master will rise again, and calls them forth to serve him once again.

Name: Nathan Tanner
Gender: Male
Height: 6'4" ft tall
Age: 25
Race: Human
Occupation: Former Demon Hunter/Agent of Nihil
Appearance

Weapons: A shadowoak longbow, a few dozen shadowglass throwing knives, two shadowoak hand crossbows, two shadowglass hunting knives, and several grenades(Poison, shrapnel, shadow, smoke, and explosive).
Fighting style: Same as Alexa's, seeing as they trained together alongside Huston Everest.
Personality: Cold-hearted, nihilistic, calm, loyal to Nihil, brutal (to Nihil's enemies), methodical, precise, ruthless, sadistic, sometimes a jokester, relentless, merciless.
Backstory: Once a demon hunter who trained with Alexa Robins and Huston Everest, he made the mistake of facing Nihil on his own and lost. Instead of killing him, Nihil corrupted him, turning him into his second agent.

Name: Catherine Robins
Gender: Female
Height: 5'8" ft tall
Age: 22
Race: Human
Occupation: Agent of Nihil
Appearance

Weapons: Twin curved shadowglass swords, twin silenced pistols with shadowglass rounds, several grenades (Shrapnel, shadow, tear gas, smoke, flashbang, concussion, poison, explosive).
Fighting style: Has a balanced fighting style, fighting both defensively and offensively. Was also personally trained by Nihil Umbra.
Personality: Cold, emotionless, calm, precise, merciless, relentless, ruthless, methodical, cold-hearted, prideful (Of being the head of Nihil's agents), bloodthirsty, brutal (To Nihil's enemies), sadistic, extremely loyal to Nihil, nihilistic, charming, deceptive, calculating, intelligent.
Backstory: The little sister of Alexa Robins, she was spared from the slaughter of her family by the order of Nihil Umbra himself. He raised her, teaching her how to fight and kill in his name. She now sees him as her true father, and believes her family, especially Alexa, left her to die and now seeks revenge against her former sister. She is his first and most loyal agent.

Name: Syltaris
Gender: Male
Height: 6'8" ft tall
Age: 10,874
Race: Elf
Occupation: Former Elven general/Agent of Nihil
Appearance

Weapons: Curved/serrated shadowglass katana, shadowglass rapier, a silenced pistol with shadowglass rounds.
Powers
Necromancy
Shadow/Dark/Blood magic
Shadow manipulation/control
Blood manipulation
Unnatural speed, strength, endurance, agility and reflexes
Fighting style: Fights elegantly and gracefully, his fighting style looking more like a dance, but is extremely lethal.
Personality: Graceful, loyal to Nihil, brutal (To Nihil's enemies), cold, cold-hearted, calm, precise, deceptive, charming, relentless, ruthless, merciless, calculating, sadistic, elegant.
Backstory: Born in an alternate dimension, his world was quickly taken over by Nihil's armies. He was the only one of their armies who survived, fending off hunderds of Nihil's soldiers at the same time. Impressed by his ability, Nihil faced the Elven general himself, quickly defeating him and putting him on his knees. Instead of executing him, he corrupted the general and had him kill all those who opposed his rule.

Name: X1-60385, Codenamed "Viper"
Gender: Male
Height: 7 ft tall
Age: 32
Race: Cybernetically and genetically enhanced human
Occupation: Ex Atlas supersoldier/Agent of Nihil
Appearance

Weapons: Two serrated shadowglass combat knives, silenced assault rifle with shadowglass rounds, silenced sniper rifle with shadowglass rounds, two silenced pistols with shadowglass rounds, several grenades(Shrapnel, shadow, tear gas, smoke, flashbang, concussion, poison gas, explosive).
Fighting style: Fights silently, prefers killing his opponents without them ever knowing he was there. But if forced to fight up close, he is a blur on the battlefield, his immense combat prowess and efficiency further amplified by the corruption.
Personality: Cold, calm, precise, methodical, cold-hearted, loyal to Nihil, silent/rarely speaks, mysterious, deadly, ruthless, relentless, merciless, introvert, calculating, professional.
Backstory: The subject of a program codenamed Project: Viper, made by General Ironwood himself in secret to try to kill Nihil, Nihil found out about it easily. He covertly infiltrated the underground compound where "Viper" was, and corrupted him in his sleep. Nihil then ordered him to kill everyone in the compound, and destroy all research. He succeeded in doing so, and escaped.

Name: Rachel Harrison
Gender: Female
Height: 5'4" ft tall
Age: 30
Race: Human
Occupation: Former Huntress/Agent of Nihil
Appearance

Weapons: Shadowglass rapier, a silenced pistol with shadowglass rounds.
Semblance: Has the unique ability to alter people's senses, such as causing them to see something that isn't there.
Fighting style: Has a fluid and fast-paced fighting style, never staying in one place, and uses her rapier to quickly dispatch any close opponents while simultaneously using her pistol to incapacitate or kill foes who are further away, so as to kill them up close.
Personality: Loyal to Nihil, graceful, elegant, deceptive, lethal, ruthless, relentless, merciless, slightly sadistic, perfectionist, percise, professional, cold-hearted, cold, calm, no-nonsense.
Backstory: A huntress who accompanied Summer Rose, Nihil resurrected and corrupted her, wiping any memories of her past and replacing them with a fake one where her family has always served Nihil, and as such she was the next in line to serve.

Name: Ashley Williamson
Gender: Female
Height: 5'2" ft tall
Age: 28
Race: Human
Occupation: Assassin/Agent of Nihil
Appearance

Weapons: Twin shadowglass daggers, several dozen shadowglass throwing knives, shadowglass wristblades, and smoke grenades.
Fighting style: Always fights under the cover of night, using the darkness to her advantage. If faced with a fight she can't escape from or avoid, she fights with the grace of a dancer and the ferocity of a lion.
Personality: Loyal to Nihil, ruthless, relentless, merciless, graceful, deceptive, cold-hearted, natural charmer, calm, calculating, intelligent, professional, meticulous(When it comes to assassinations).
Backstory: Hired by a mysterious employer to kill a man, she took the contract and set out to find her target. Upon finding him, she quickly cut him down without a second thought, only to suddenly be cornered by Nihil's shades and Nihil himself. Nihil, in a surprising turn of events, doesn't kill her but explains to her that she just killed one of his best agents, and that she needs to pay him back. Nihil offered her the spot in exchange for her life, and she readily accepted this gracious offer, knowing exactly who Nihil is.

Name: Talzeim
Gender: Male
Height: 6'5" ft tall
Age: ???
Race: Human
Occupation: Necromancer/Agent of Nihil
Appearance

Powers
Shadow manipulation
Necromancy
Blood manipulation
Nearly all kinds of magic
Summoning
Poison manipulation
Personality: Loyal to Nihil, powerhungry, relentless, ruthless, merciless, slightly psychotic, cold-hearted, intelligent, deceptive.
Backstory: He was once a weak necromancer, mocked by his peers. But one day he found out that Nihil could grant him the power he so longed for. He sought the shadow demon out, and fell on his knees begging for the dark lord to grant him power. Amused by this human, Nihil agreed to his request, in exchange for him becoming one of his agents.

Name: Valys
Gender: Male
Height: 6'10" ft tall
Age: 1,778
Race: High Elf
Occupation: Assassin/Agent of Nihil
Appearance

Weapons: Twin curved shadowglass daggers, two curved shadowglass sabers, a shadowglass armblade, shadowglass wristblades, several dozen shadowglass throwing knives, a shadowoak longbow.
Powers
Illusion manipulation/creation
Shadow manipulation
Blood manipulation
Most kinds of magic
Fighting style: Disorients his opponents with his abilities, then while they are distracted he quickly slits their throats, then vanishes into the shadows without a trace.
Personality: Cold, silent, ruthless, relentless, merciless, calm, precise, lethal, deceptive, no-nonsense, loyal to Nihil, cold-hearted, sadistic, professional.
Backstory: Born in Tamriel, he was an assassin for the Dark Brotherhood, who's skill in silencing targets impressed Valek and even Nihil himself. He was taken by Nihil's shades and corrupted by him, turning him into one of Nihil's most valuable assassins.

Name: Evelyn Roana
Gender: Female
Height: 5 ft tall
Age: 19
Race: Human
Occupation: Assassin/Agent of Nihil
Appearance

Weapons: Shadowglass katana, several dozen shadowglass throwing knives, several shadow and smoke grenades, shadowglass wristblades, a silenced pistol with shadowglass rounds, and a shadowglass dagger.
Fighting style: Uses the environment to her advantage, utilizing her knowledge in parkour and athletic ability to quickly dispatch her opponents and disappear.
Personality: Loyal to Nihil, cold-hearted, ruthless, relentless, merciless, graceful, flirtatious at times, childish at times, calm, cold, deceptive.
Backstory: Born in a medieval type world, Nihil's armies appeared one day and quickly gained a foothold upon the world, rapidly gaining ground while Nihil and his council set up operations in her home city. Whether because of foolishness or bravery, she decided to try to kill Nihil herself. She slipped past the guards and made her way up to Nihil's chambers, opening the door to find Nihil sleeping. She quickly drew her dagger and stabbed down on him, only for him to disappear, revealing that it was a clone all along as Nihil appeared behind her and threw her against the wall. Impressed by her ability, he offered her a place as one of his agents in exchange for her family's lives. She hesitantly accepted, being corrupted by Nihil and her memories wiped clean. Now, she serves him loyally.

Name: Heather Daliys
Gender: Female
Height: 6'6" ft tall
Age: 30
Race: Human
Occupation: Mercenary/Agent of Nihil
Appearance

Weapons: Shadowglass katana, shadowoak longbow, several dozen shadowglass throwing knives, smoke grenades.
Fighting style: Has a fighting style just like a samurai.
Personality: Loyal to Nihil, relentless, ruthless, merciless, cold, calm, honorable in combat, cold-hearted, deceptive, hard to anger, professional.
Backstory: A feared and respected mercenary, she was hired by Nihil's cult to act as security. Her skill in combat caused the cult to inform their master of her, who went over to inspect her himself. Nihil tested her skill, and was impressed with how she managed to survive(barely). He then quickly corrupted the merc, and turned her into an agent.

Name: Natalya Blackwood
Gender: Female
Height: 6'3" ft tall
Age: 8,692
Race: Pure-blood vampire
Occupation: Vampire noble/Agent of Nihil
Appearance

Weapons: Two shadowglass rapiers, shadowglass wristblades, two shadowglass stilettos.
Powers
Enhanced speed, strength, endurance, agility, reflexes
Enhanced senses
Shapeshifting
Summoning
Blood manipulation
Shadow manipulation
Charm
Hypnotic voice
Fighting style: Uses her speed to her advantage to quickly end any battle she is in, as being in a long-lasting one tends to work against her.
Personality: Loyal to Nihil, flirtatious, seductive, relentless, ruthless, merciless, sadistic, bloodthirsty, calm, cold-hearted.
Backstory: She sought out Nihil for power in exchange for anything he wanted, which was a very obvious attempt at trying to seduce the dark lord. Nihil simply brushed off her attempts and gave her the power she wanted, in exchange for her loyalty.

Name: Sabrina Halloway
Gender: Female
Height: 5'8" ft tall
Age: 21
Race: Human
Occupation: Assassin/Agent of Nihil
Appearance

Weapons: Shadowoak longbow, several dozen shadowglass throwing knives, shadowglass dagger, smoke and shadow grenades, shadowglass wristblades.
Fighting style: Fights from a distance, using her bow to expertly take out any opponents before they get close to her. If forced to fight close, she uses her wristblades to take them by surprise.
Personality: Loyal to Nihil, ruthless, relentless, merciless, professional, jokester at times, calm, cold-hearted, sort of laid-back, cautious.
Backstory: She was born in the same world as Evelyn Roana, but instead of trying to kill Nihil, she saw his occupation of her world as an opportunity. She sought an audience with the dark lord, offering him her allegiance in exchange for money and the chance to kill the king. Nihil agreed to her proposal, and lent her some of his soldiers. She stormed the castle with his soldiers and personally killed the royal family, allowing the corruption that Nihil secretly implanted within her to take root.

Name: Reis
Gender: Male
Height: 9 ft tall
Age: ???
Race: ???
Occupation: Agent of Nihil
Appearance

Weapons: Shadowglass broadsword which he wields one-handed, several dozen shadowglass throwing knives.
Powers
Weapon Summoning
Unnatural speed, strength, endurance, agility, and reflexes
Almost all kinds of magic
Fighting style: Uses his unnatural speed to close any distance with his enemy, and utterly destroys them.
Personality: Loyal to Nihil, relentless, ruthless, merciless, brutal (To Nihil's enemies), silent, serious, professional, sadistic, bloodthirsty, emotionless, nihilistic, likes humiliating weak opponents, mysterious, intimidating, no-nonsense.
Backstory: Not much is known about this black swordsman, but all that is known is when Nihil traveled the different realms, he came across him. The swordsman then challenged Nihil to a duel, offering his allegiance if he won. The man actually came close to beating Nihil, until Nihil unleashed his full power and finally beat him. True to his word, Reis swore himself to Nihil's service, and has served well ever since.

Name: Alina Mercer
Gender: Female
Height: 5'8" ft tall
Age: 26
Race: Human
Occupation: Former demon hunter/Agent of Nihil
Appearance

Weapons: Same as Nathan's.
Fighting style: Same as Nathan's.
Personality: Loyal to Nihil, cold-hearted, calm, ruthless, relentless, merciless, sadistic, bloodthirsty, professional, precise, serious, no-nonsense.
Backstory: One of the very few suvivors to escape the destruction of the Maelstrom academy, she was found by Nihil's agents and taken secretly. He erased her memories and corrupted her, turning her into another of his puppets. She was also Nathan's girlfriend before the destruction of Maelstrom.

Name: Xiric
Gender: Male
Height: 6'6" ft tall
Age: 9,876
Race: Dark Elf
Occupation: Eldritch Knight/Agent of Nihil
Appearance

Weapons: Two shadowglass longswords, several dozen shadowglass throwing knives, shadowoak longbow, shadowglass shield.
Powers
-Dark/Unholy/Blood/Shadow magic
-Necromancy
-Eldritch magic
-Summoning
-Elemental magic
Fighting style: Uses his magic to enhance his capabilities and sow chaos and confusion among his enemies, quickly cutting them down.
Personality: Loyal to Nihil, relentless, ruthless, merciless, bloodthirsty, sadistic, brutal, insane, nihilistic, cold-hearted, power-hungry.
Backstory: Driven by his thirst for power, he slaughtered his village and took their souls, moving from place to place for a few millennia massacring villages and towns. All this death drew the attention of Nihil, who went to investigate. When Xiric saw Nihil, he immediately sensed the vast power the shadow demon had, and begged him for more power. Nihil agreed, but only in return for his utter allegiance.

Name: Ekera
Gender: Female
Height: 6'4" ft tall
Age: 6,595
Race: Dark Elf
Occupation: Rogue/Agent of Nihil
Appearance

Weapons: Shadowoak longbow, several dozen shadowglass throwing knives, smoke grenades, various traps, twin shadowglass knives.
Fighting style: Fights with ferocity and grace, combining archery with close combat.
Personality: Loyal to Nihil, ruthless, relentless, merciless, cold, calm, serious, cold-hearted, brutal, graceful, professional, deceptive, charming, flirtatious.
Backstory: Found by Nihil's shades during an invasion, she was brought before Nihil. Thinking on her feet, she offered him her skills and allegiance in exchange for her live. He agreed, and turned her into an agent.

Name: Drale
Gender: Male
Height: 8 ft tall
Age: 16,769
Race: Pure-blood vampire
Occupation: Vampire King/Agent of Nihil
Appearance

Weapons: Shadowglass longsword, several dozen shadowglass throwing knives.
Powers
Shapeshifting
Animal manipulation
Smoke manipulation
Dark/Shadow magic
Blood magic
Unholy magic
Elemental magic
Summoning
Invisibility
Necromancy
Enhanced speed, strength, endurance, agility, and reflexes
Fighting style: Fights up-close with a mixture of summoned creatures and magic.
Personality: Loyal to Nihil, ruthless, relentless, merciless, bloodthirsty, brutal, nihilistic, taunting, cold-hearted, calm.
Backstory: The king of a vampiric kingdom in another realm, his kingdom was threatened by the humans of his world. But then Nihil came, easily crushing the humans and saving the vampires. The king was so impressed by Nihil's power and armies that he pledged himself and his entire kingdom to Nihil's rule.

Notes
-All agents of Nihil are immortal, regardless of race thanks to the corruption coursing through their veins.
-All agents possess the abilities to manipulate and control blood and shadows, thanks to the corruption.
-All agents are ranked above Nihil's armies, and are given the authority to command a small sect if a mission requires it.
-They answer only to Nihil himself, and will only answer to his generals if given a direct order to.
-Almost every agent acts professional, respectful and well-mannered to Nihil and his family, except for Evelyn Roana, Ekera and Natalya Blackwood, who have a problem trying to flirt with Nihil whenever his wives aren't around.
-All agents address Nihil as Master or Lord Nihil, except for Catherine Robins, who sometimes addresses him as Father.
-All agents can speak telepathically to Nihil or each other, thanks to their direct bond.
-The agents consider each other as brothers and sisters in arms, and will protect each other with their lives.
-Evelyn Roana, Sabrina Halloway and Catherine Robins are very close to Hershey, being kind and caring to her, acting as friends and sisters to the only daughter of Nihil.
-Agents of Nihil can never die nor be released from their service by other beings, as their life force and their very souls are bound to Nihil's own life force. The only way for them to be released from his service is by his own hand.