A monster is a Human that has given into their desires. Early symptoms of monsterification include a sudden bloody nose accompanied by a fainting spell and auditory hallucinations. The hallucination is actually the entity responsible for turning people into monsters by manipulating them to reveal and give in to their greatest desire. The entity is very persistent and will try any means to get the human to give in. Humans with a strong will and the self-awareness to know what the entity is trying to do are able to delay complete monsterfication. People with split personalities are supposedly able to control the monster since it can only control one personality at a time. As the human nears complete monsterfication, they will occasionally lose control of themselves to their monster side, but they can revert back. Occasionally, extreme emotional shock or very close friend may let the human re-take control.

Upon complete monsterfication, the human will mutate grotesquely. All monsters' eyes have red scelera. Each monster has a unique set of traits and abilities related to the desires of the human it was made from. For example, the Slime Monster was based off a young child's desire to not be seen. Most monsters repeatedly utter phrases related to their desires, but they can respond to things around them, such as Steroid Monster remembering Hyun's weapon. Nearly all monsters are driven by cannibalistic tendencies and very sensitive to sound. They will attack any non-infected human on sight. They usually do not attack other monsters except for specific circumstances (Steroid attacking Blind because Blind hurt Steroid). Monsters will also stop eating humans if they see any visible signs of infection. However, they will continue to attack if the infected human is known to be hostile to monsters. Monsters also do not die as easily as humans do. They can recover from most injuries and organ damage from the neck down. While the skull can be fractured, if any part of it is destroyed completely, it will not regenerate. The only way to completely kill a monster is through incineration; however, some monsters are smart enough and have enough pain tolerance to find a way to put out the fire before it is fatal. Some injuries, such as complete destruction of the entire body, cannot be recovered from and the monster will die.

The monsters exert a signal-jamming presence. This makes wireless internet and telephones unusable. However, if someone has wired internet, they are still fine. While cell phones cannot be used for normal functions, they will start beeping as a monster gets close. The closer/greater the number of nearby monsters, the more frequent the beeps. This will enable humans to hide and avoid monsters. Sleeping monsters, however, do not get detected. In other words, a visible monster without any phone beeping can be, assuming the phone has power and could have beeped, cautiously and safely avoided or killed without a fight so long as the human does not make a sound. The monsters also appear to have a very acidic, corrosive spit they can launch as a projectile. It can easily burn flesh and is fatal if it hits the head. While only few monsters have been observed using it, it can be assumed that all monsters have this property as different types of monsters have used it, regardless of its desire.

Recently, the survivors have noticed monsters can turn into cocoons. It is unknown how this occurs or why. However, monsters cannot harm the cocoon in any way. Ihyun, a half-human half-monster attempted to use his monsterfied arm, but wound up attacking himself. The cocoon could only be destroyed via fire. Other monsters in a great area, however, can sense when a cocoon is in peril, as upon setting the Infant's cocoon on fire, a horde of monsters swarmed the apartment building it was housed in. Wook Pyeon witnessed one of these cocoons morph into a person.

Humans who have turned into monsters are not completely gone. Their psyches are locked away in a dream world, away from conscious control of their bodies. The dreamworld is designed to cater to every desire the human has. The human stays there until all their desires are satisfied and they realize their is nothing left for them. According to Hyun's Inner Monster, this sense of futility is what triggers the monster to cocoonify and the human to "evolve."

Evolved HumansEdit

At some point, the trapped human conscious will satisfy all their desires and will no longer derive any pleasure from them, nor can they come up with new ones. This causes the start of the "evolution." The monster will turn into a cocoon. At this point, the evolving monster is at its most vulnerable to destruction. Monsters have an instinct to protect the cocoons. As Ihyun Jo discovered, monsters will not harm the cocoon in anyway, even if a half-monster attempts to force the monsterfied self to do so. Monsters are able to sense the destruction of a cocoon from a fairly wide radius, and any monster who senses its destruction will rush to the location to eliminate any threat.

After an unknown period, the cocoon will hatch, revealing a human-like figure. This "evolved" human presumably takes on their appearance pre-monsterfication, albeit entirely naked. Monsters are able to sense they are an evolved human and will not attack them, and will instead be enraged if they are killed. Monsters will also protect them. These evolved humans are completely devoid of emotion. While they cannot feel anger or fear, they also cannot feel positive emotions such as happiness. They are not hostile to "unevolved" humans. Instead, they will try to encourage them to turn into a monster and become an evolved human as part of the "Revolution." Unlike monsters, the "evolved" human does not have any regenerative ability to speak of and they can be killed through typical human-killing means.

List of Monsters Edit

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Major Monsters
Starving Monster  Tongue Monster  Blind Monster  Eyeball Monster Steroid Monster 
Slime Monster  Tentacles Monster  Infant Monster  Reach Monster  Speed Monster 
Snail Monster  Eye Moss Monster  Upside-down Face Monster  Mr. Kim  Seok Kim 
Jay Ryu  Bat Monster Blockhead Monster  Leech Mouth Monster  Armadillo Monster
Horned Monster Dusik Hahn 
Hyun Cha Ihyun Jo
Evolved Monsters
Mysterious Woman  Evolved Hollow Eye Monster
Minor Monsters
Acid Tube Monster Belly Eye Monster Wings Monster Dog Monster
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