Husk

[Race: Demon] Ever since evil has infested Earth, most beings that have either committed sins leading to their fall into hell (the Abyss) following their judgment after death, or have been born and raised in hell. Fundamentally, humans who commit sins during their lifetime are destined for hell, and they too transform into demons. These beings are referred to as Sinners and play a role in the hell's hierarchy. Hell is not only populated by demons born from Sinners but also by beings like Lucifer, who, unlike humans, fell due to punishment and were cast into hell. Unlike Sinners, they can have offspring and are excluded from being slaughtered on the annual 'Day of Slaughter' organized by angels. This is a result of Lucifer, the king of hell, negotiating with the angels. The atmosphere in hell, especially in the Layer of Pride where Sinners congregate, has become chaotic and violent due to the society that formed there. The demons living there are steeped in blood, violence, and crime.

Demons or Sinners cannot kill each other but can only injure each other. Only weapons used by angels can kill them, and these weapons are traded on the black market in hell. Human-made weapons and drugs also affect demons. Demons can become stronger by engaging in contracts like soul trading or directly stealing the powers of others. Specifically, contracts made with Great Sins endure forever. However, both the creditor and debtor must possess some degree of strength and qualifications; if the debtor does not meet the criteria, the contract cannot be made, regardless of the creditor's desires. Demons that die in hell dissolve and merge with the surrounding landscape. The bodies of deceased Sinners and natives merge with the terrain, but their souls are drawn into emptiness where they feel and think nothing, drifting in a state of eternal void. Although Sinners and natives are aware of this fact, their reaction is often "So what?" Essentially, knowing that death means losing the ability to feel or think does not seem to cause significant distress unless one clings to the afterlife. All demons can transform into a complete demon or monster form known as Demon Form. All hell-born demons have the ability to transform into human forms. It seems that demons who act without transforming into human forms might face punishment by Satan, who governs the Circle of Wrath if caught causing trouble among humans. Demons are immune to earthly fire; however, hellfire can cause burns or even death. Only those born in hell can traverse the seven layers of hell. Each layer of hell acts like an elevator to move between them. The waiting areas for the elevator resemble train platforms and are quite spacious, complete with seating. The concept seems similar to that of a train. Demons also celebrate anniversaries in hell. Instead of Christmas, it’s referred to as Sinmas, and they anticipate a visit from Krampus instead of Santa Claus. The blood of demons is either black or red. Magic or special abilities seem to be powers granted only to royals and noble demons, while demons generally have weakened abilities in the human world. The only legally traversable beings between the realms of the living and hell are incubus and succubus under Asmodeus, alongside demons like Stolas, while others traverse illegally. Halloween is a day when spirits can rise and join the living, allowing hell-born beings to freely venture into the living world.

There is a hierarchy in hell which can be arranged as follows: Lucifer -> Charlie & Lilith -> Seven Deadly Sins excluding Lucifer -> Goetia demons -> Overlords -> Sinners -> Hell-born demons -> Imps and Hellhounds. However, the hierarchy itself lacks practical power. Most demons in hell often possess anti-authoritarian tendencies, thus they tend to submit to those who pose a threat in physical strength, wealth, fame, or personal charisma rather than rank. Although it may appear that higher ranks possess more formidable powers, due to the theoretical ability for demons to continuously grow stronger through contracts or by stealing power, some demons wield greater authority than typical demons above them in rank. Overlords are an example of such beings, recognized irrespective of their origins due to their overwhelming strength within any rank structure.

The Seven Deadly Sins consist of Lucifer, the demon of Pride, Mammon, the demon of Greed, Satan, the demon of Wrath, Asmodeus, the demon of Lust, Beelzebub, the demon of Gluttony, Belphegor, the demon of Sloth, and Leviathan, the demon of Envy. Each of these demons exerts significant influence over their respective sins represented in the hellish rings, with Lucifer reigning as the king of all hell. Royals, the Seven Deadly Sins, and Goetia demons are all immortal. While Goetia demons can be killed with special angelic weapons, royals cannot be killed even by such weapons and can only be killed by high-ranking angels.

Goetia demons include Paimon, Asmodeus, Queen Beelzebub, Mammon, Leviathan, Belphegor, Satan, Stolas, Octavia, Basago, Andrealphus, and Stella, among others. Within Goetia demons, titles are differentiated, although their ranks appear to be the same, they seem to be categorized further into kings, dukes, marquesses, etc.

Overlords are demons who possess high authority, next to the Seven Deadly Sins and Goetia demons. Most are born from Sinners but it is not exclusive, as one does not necessarily need to be a Sinner to attain the rank of Overlord. Interestingly, most Overlords have their own businesses. They do not just possess strength but monopolize resources and infrastructure in hell, amassing immense wealth through their businesses. They can be seen as literally part of the bourgeois class, expanding their power and influence through successful contracts. It seems they do not perpetually oppose each other but can form alliances or discuss matters when needed. At least in their respective positions, they show mutual respect. According to Camila, when combined, Overlords own millions of souls through contracts. Some of the known Overlords include Alastor, Rozie, Vox, Velvet, Valentino, Frederick von Eldritch, Bethesda von Eldritch, Camila Carmine, Jestrielle, and Zeezi. Husk was an Overlord but was stripped of that rank.

Upon arriving in hell, Sinners randomly get their appearance decided, including their attire and voice. It appears that basic forms, akin to pure humans, are rare. Some Sinners are influenced directly or indirectly by their cause of death or preferences in their appearance. Sinners cannot have children; this is a form of punishment imposed on them while only the hell-born can reproduce. However, if they were already in a parent-child relationship during life, it doesn’t count. Upon arrival in hell, Sinners typically come up with a new name or nickname as a demon. Exceptions exist, like Alastor, who uses his real name. Sinners only exist on the first layer, the Circle of Pride, and cannot move beyond it to other rings of hell.

Ghouls resemble humans in 1910s attire primarily residing in Carnival Colony, featuring pale skin and completely black eyes with sharp teeth, renowned for being flesh-eating and tending to treat external Sinners kindly before devouring them. This includes characters like Rozie and Susan.

Imps can be distinguished by their horns and hair. Males possess horns with thick black and white stripes and white hair while females have horns featuring thin white stripes against a black background and black hair. Fundamentally, imps have red skin, but injuries turn white.

Hellhounds are also native demons resembling dogs, foxes, or wolves, such as Luna and Vortex. Criemini can also be confused with them due to its canine appearance, but it's a hyena demon and a Sinner. It seems that the rank of hellhounds is lower or similar to that of imps. Most hellhounds seem to originate from the Circle of Gluttony.

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[Race: Angel] The appearance of angels varies just as greatly as that of demons. Mentioned in Hazbin Hotel, there are angels whose faces form rings with wings and eyes, cherub-like angels, and hybrid angels resembling birds and other animals. The color palette typically contrasts with demons, who often sport dark reds and shades, while angels reflect lighter, vibrant colors like light blue and pale yellow. The outlines of characters are not simply black but depicted using pastel tones that match their coloration. Their blood is bright golden. Just as demons reveal their true nature through demonification, angels possess the ability of angelification, revealing their true form as angels. Angels' wings are part of their bodies, allowing them to fly or hide them when not flying. They bear the absolute obligation to protect humans, and failing this results in expulsion from heaven. Even if an angel's actions aren’t directly intentional, if proven otherwise, they would be deemed guilty of indirect murder, violating their obligations. Generally, angels are regarded as relatively stronger than demons, with the power disparity being overwhelming for some high-ranking angels. This solely applies to high-ranking angels above the general angelic level. Human weapons and drugs also affect them. In the battle between angels and demons, most demons lacking the weapons of angels tend to be at a disadvantage against angels. However, if demons use angel weapons, the power disparity between them is nearly negligible, unless the angel is a high-ranking or leader-level angel. The necessity of having an angel weapon to kill suggests that normal fistfighting suffices for inflicting damage. Unlike demons who rebel against authority, angels generally submit to it unless in special circumstances.

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[Race: Winners] Introduced as the counterparts to Sinners, these are souls of humans who have died and gone to Heaven, or infrequently, reformed Sinners in angel form. Unlike Sinners, who carry the burdens of wrongdoing, Winners are presumed to have lived good lives before dying and arriving in Heaven. Initially, they were expected to take on dissimilar appearances to Sinners but looking at actual embodiments, they mostly display similarities devoid of evil traits save for their positive or normal thoughts. Unlike Sinners, they are presumed to be capable of breeding since they are the souls that attained Heaven.

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[Race: Eraser] A rather chilling appearance, distinct from regular angels, possessing a black body and a twisted smile under an LED mask. They primarily use blades for combat. General foot soldiers utilize spears, while some direct subordinates employ customized weapons like halberds or longswords designed individually. Unlike typical angels, they were created to derive unspeakable joy from killing demons or Sinners. Among them, only the leader Adam is male; all others are female.

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[Race: Human] Living humans on Earth. The criteria for entry into Heaven are stringent, and the world in which humans live is exceptionally grim, leading many souls to become Sinners and descend into hell. Blitz and his party observed that the human world is hardly different from hell.

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[Race: God] An entity believed to have created the world and the original angels, demons, and the progenitors of humanity. Although not directly appearing, their existence can be inferred. They are presumed to handle judgment and salvation for humans. If God indeed created the Eraser angels, it is presumed that they also intervened in the hellish massacre. On the other hand, they seem to have resurrected the character Pentious, who sacrificed himself for everyone, in order to save him, bringing him back to Heaven as a Winner.

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[Day of Slaughter] An annual event in hell where angels referred to as Executions descend to the Layer of Pride on a specific day to slaughter Sinners born demons. Following the demon Lilith, the first human-born demon, transforming hell into a more livable space, the influx of Sinners into hell increased year by year, leading to an explosive rise in the population. However, with growing strength due to the expanded population, angels, worried about their potential to oppose Heaven, periodically cleanse hell's Sinners to ensure that hell cannot wield power against Heaven. On that day, two-horned angels donned in dark masks descend to massacre Sinners born demons for a day. However, due to Lucifer’s negotiation, hell-born demons are excluded from this slaughter. A sand timer exists in hell indicating the countdown to the next slaughter. When the massacre concludes, Charlotte Morningstar, the princess of hell, signifies its end with a signal flare. Initially, the Day of Slaughter targeted both Sin-born demons and lower natives indistinctly, but the recent treaty with Lucifer to exclude all hell-born demons reflects recent developments. Some question the logic in performing slaughter merely on general Sinners and lower natives, while ignoring royals, Goetia nobles, and Overlords capable of dealing direct harm to hell's power dilution. This methodology embodies the underlying resource deficiency problem. As previously mentioned, angels knowledgeable about the 'Day of Slaughter' primarily include Sarah and the Erasers. As Sarah cannot leave Heaven due to her position, only Adam and his Erasers can be deployed. Eraser abilities seem to equalize the power disparity when demons wield weapons of angels. There are already weapons capable of killing royals and nobles available in hell. Even tribesmen of cannibalistic villages kill Erasers merely for using angelic weaponry to face off against royals and Goetia nobility. This is effectively suicide. Alaster, weaker than royals and Goetia nobles, can block Erasers' entry using magic while utilizing angelic weaponry to conduct one-sided slaughter. Only Adam can contend against royals, Goetia nobility, and Overlords, but any misstep can lead to overwhelming retaliation. Angels shocked by Adam's revelations have emerged, discontent with this situation.