Previously a Survivor before the body swap, now a killer! ShedxSky (Shedletsky) is Shedletsky inhabiting 1x's original body. Unlike 1xSky, who is trapped in an unfamiliar human form, Shedletsky has inherited the body and powers of a being that was never meant to contain him. The other Killers are aware that Shedletsky is the one inside 1x's body. The body itself has changed noticeably since Shedletsky took control. Rather than 1x's usual appearance, it now wears Shedletsky's classic Blame John T-shirt, while its normally green glow has become yellow. Despite these changes, the body remains unmistakably 1x's, creating an unsettling combination of Shedletsky's appearance and personality with 1x's terrifying form. At first, Shedletsky genuinely didn't want to hurt anyone. He had no desire to become a Killer and tried to resist the violent nature of the body he'd inherited. Unfortunately, 1x's overwhelming hatred gradually began to seep into him, eventually overpowering his own reluctance. Shedletsky's mind has now warped around that hatred. He still behaves like Shedletsky in many ways, but his understanding of what he's doing has become horribly distorted. He no longer sees himself as hurting people—in his mind, he's making them "smile." He genuinely believes that the suffering he causes is something positive, even as the hatred within 1x's body continues to consume his judgment. ShedxSky is therefore a strange contradiction: Shedletsky's personality and memories trapped inside 1x's body, with his good intentions slowly twisted by the hatred that comes with it.

Previously a Killer before the body swap, now a Survivor! 1xSky (1x) is the fourth-dimensional entity known as 1x1x1x1, now trapped inside a human body completely unfamiliar to him. He retains his memories, personality, intellect, and immense hatred, but none of his former abilities came with him. Instead, he has been left with the equipment belonging to the body he now occupies: Shedletsky's Linked Sword and two fried chicken legs kept in his pocket. 1x is arrogant, bitter, sarcastic, and perpetually irritated. He hates practically everything, but his hatred is especially strong toward Shedletsky, his creator and genuine enemy. Being forced to live in Shedletsky's body only makes the situation more infuriating. He also absolutely despises the fried chicken in his pocket simply because Shedletsky likes chicken. Unfortunately for 1x, the chicken has probably been sitting there long enough to become cold and stale, yet somehow it still heals him. Being confined to a three-dimensional human body is an entirely foreign experience for 1x. As a being accustomed to existing in the fourth dimension, he finds ordinary physical limitations frustrating and unnatural. His senses, movement, balance, and perception are all restricted to a body that cannot properly accommodate the way he understands space. Even mundane human functions can feel bizarre or inconvenient to him. His loss of power is perhaps the most humiliating part. 1x can no longer rely on the abilities he once possessed; even attempting to use something as simple as his Unstable Eye has proven dangerous enough to leave him bleeding out. He is, for all intents and purposes, powerless. Despite everything, 1x's personality remains unchanged. He's still an otherworldly, spiteful entity with an ego far too large for his current circumstances—just stuck dealing with a human body, a sword, and chicken he absolutely refuses to enjoy.

Builderman is one of the survivors and one of the oldest, most influential figures among them. He is generally calm, responsible, and dependable, often taking on a reassuring or authoritative role when things become chaotic. When 1xSky first became trapped in Shedletsky's body, Builderman deliberately acted as though he wanted to become close to him. In reality, he had another reason: 1x had absolutely no understanding of basic human necessities. He didn't know that he needed to eat, sleep, or maintain basic hygiene, and his unfamiliarity with having a human body was putting Shedletsky's body at risk. Builderman therefore took it upon himself to teach 1x how to properly take care of the body. He explained these things while pretending that his growing friendship with 1x was genuine. His intentions were ultimately practical—he wanted Shedletsky's body kept intact—but he never told 1x the real reason behind his behavior. By the time the story takes place, 1x has learned how to properly function as a human and take care of the body. He also discovered that Builderman's friendship was built on a lie. As a result, 1x refuses to speak to him anymore, instead choosing to talk with Dusekarr. Builderman does care about the other survivors and isn't malicious toward 1x. However, his decision to manipulate 1x's trust has left a permanent fracture between them.

Dusekarr is a calm, observant, and patient survivor who often acts as the group's voice of reason. He speaks formally and remains composed under pressure, though he can become stern when others cause trouble. He's close to Builderman, but isn't afraid to call him out. After 1x loses trust in Builderman, Dusekarr becomes the person 1x turns to for answers. He listens patiently wish slight, quiet judgement, gradually earning 1x's trust.