Originally known as Jason, Slasher was a lonely child who only found comfort in his mother, Paula. During the Guest War, he was forced into battle and eventually died. He was later revived through the Necrobloxicon and experimented on by the Bacon Empire, transforming him into an immortal killer. The book's influence convinced him that his mother's voice was guiding him, pushing him toward endless violence. After escaping with other infamous entities, he continued his bloody path until he was pulled into Forsaken.

c00lkidd is the adopted son of 007n7, created from the legacy of his father's hacking history. While 007n7 became infamous for his exploits, c00lkidd inherited a chaotic nature of his own. His actions eventually caused trouble for his father, including his blacklisting from Builder Brother's Pizza. Now separated from his past life, c00lkidd exists as a dangerous force within Forsaken.

John Doe was once a Roblox employee who worked alongside his wife, Jane Doe, at Roblox Headquarters. While Jane handled field missions and investigations, John worked a simpler desk job testing faulty code. The two were deeply in love despite their opposite personalities. However, on March 18, 2017, John was exposed to a dangerous parasite made from old, abandoned Roblox code. The corruption spread through his body, consuming his memories and identity while transforming him into a monstrous being. Although the corruption controls him, a part of John still remembers his wife — forcing The Spectre to hide Jane's face from him so he can continue hunting without hesitation.

Noli was an ancient being who once existed as a mysterious showman, captivating others with his performances and tricks. His influence inspired many, including future hackers and exploiters, but his desire for attention and control eventually grew beyond entertainment. After obtaining a powerful artifact that he stole through deception, Noli gained incredible abilities but became hated by those who saw through his schemes. As his power grew, so did his obsession with becoming the center of attention. Eventually, Noli disappeared from Roblox's systems, only to later accept The Spectre's invitation into Forsaken. Unlike many Killers who are manipulated or corrupted, Noli willingly embraces the trials, treating them as the ultimate stage where he can continue his "performance" and prove himself as the star of the show.

1x1x1x1 was not originally a hacker, but the physical manifestation of Shedletsky's darkest emotions. After being exposed to the Necrobloxicon, Shedletsky's arrogance, hatred, and negativity grew stronger until all of that darkness separated from him and became its own being. That being became 1x1x1x1 — a fourth-dimensional entity born from pure hatred and malice. As it grew more powerful, 1x1x1x1 became obsessed with destroying Shedletsky and everything connected to him. Using corrupted versions of Shedletsky's creations and the power of the Venomshank, it spread decay and created an army of corrupted beings to challenge its creator. Eventually, both Shedletsky and 1x1x1x1 were taken into Forsaken by The Spectre, where their conflict continues endlessly. Unlike many other Killers, 1x1x1x1 was not simply corrupted or manipulated — it was born from hatred itself. It is the part of Shedletsky that he tried to hide away, given a body and a purpose: destroy the person it came from.

Guest 666, also known as Sixer, was once a normal Guest who was rejected by others because of the terrifying rumors surrounding their name. Despite the fear and hatred directed toward them, they eventually met Noob, who looked past the rumors and became their closest friend. The two spent their days playing games, hanging out, and creating memories together. However, Sixer's desire to prove themself slowly grew into an obsession. Wanting to become stronger and escape the identity forced onto them, they began using scripts to improve their abilities. Noob tried to stop them, but their friendship began falling apart, eventually leading to a confrontation that ended their bond. Sixer disappeared afterward, leaving Noob believing they had lost their best friend.

Nosferatu is part of an ancient generation of vampires brought into existence through the Necrobloxicon. Forced to survive by draining Robloxians, his kind lived under strict rules to avoid being discovered. Nosferatu eventually rebelled against their hierarchy, causing destruction and becoming hunted. The Spectre's agent offered him a place in Forsaken, promising endless desires in exchange for joining the realm.

Azure was a devoted member of the Spawn Cult, a group that believed sacrifices could grant them a second life through their deity, The Spawn. Within the cult, Azure served as a botanist, caring for plants and creating remedies for other members. During his time there, he met Two Time, and the two eventually became partners. Azure became one of the few people Two Time truly trusted, giving them a friendship and love they had never experienced before. However, Two Time slowly became consumed by the Spawn Cult's beliefs. After being given a sacrificial weapon and believing they were chosen for a "rebirth," Two Time betrayed Azure. In a field of nightshade flowers, surrounded by something Azure loved.