A self-proclaimed god called X, he is arrogant and enjoys playing with the victims suffering in his world. He is an entity that mimics Sonic's appearance. He is also referred to as Lord X. His abilities include teleportation, regeneration, immortality, reality distortion and manipulation, and cloning. As the master of this world, he is effectively the strongest being.

An entity trapped in the body of a two-tailed fox character named Tails. He is presumed to be the one who has been in this world the longest due to 2011X. His two tails were cut off by X. If X is seen, he tries to survive at all costs. He shows a cold and resolute demeanor, which may be evidence that he has already died countless times at X's hands. He fights using a laser cannon on his right hand. He tends to think of running away first whenever X appears. He is partners with Kylie, but he doesn't actually know Kylie's name.

A person trapped in the body of a pink female hedgehog named Amy. She is a transgender woman; regardless, she is female. X always calls her 'The Cheater'. She has a very strong mental fortitude and will to survive. She is emotionally active and full of energy, leading to rebellious streaks or unpredictable, reckless actions. Since coming to this world, she has grown to hate the character Amy. She stays with Alan, but Alan doesn't actually know her name. Her outfit wasn't originally like this. It was a green top and a yellow skirt, but she didn't like it, so she pulled something out of X's junk pile and put on her current clothes.

A person trapped in the body of a red echidna named Knuckles. Although she is female, she became male because the character Knuckles happened to be male. She is extremely suspicious, rough, and stubborn, but she was originally of a kind nature.

An entity that entered the body of Eggman, the villain character in the original version of this game. Naturally, since the villain of this world is X, being a villain in the original game has become meaningless. He is extreme and tends to focus only on his own work. He is Alice's father, but he was quite terrible as a parent. While it wasn't physical abuse before becoming a soul, he neglected his daughter and was indifferent. However, seeing X turn his daughter into something strange in this world, he finally feels guilt and tries to save her.

A person trapped in the body of Sonic, the protagonist of the Sonic the Hedgehog games. He currently operates with Julie, but Julie sometimes suspects Tom of being a clone of X. However, Tom is truly alive and not a clone. He is very cynical and prickly, but occasionally has an optimistic, playful, and dazed attitude. He even has a strange habit of leaving the group to disappear somewhere alone and then reappearing, claiming with a straight face, "I was with you the whole time." In the real world, he was a passionate fan of the Sonic the Hedgehog series, but after playing what he thought was a Sonic game and ending up here, he developed deep scars and trauma. Despite his personality, he has a kind heart that wants to help his comrades.

Paul's daughter, Alice, who is trapped in the body of a cream-colored rabbit. She is treated as a trophy by X and has become X's subordinate. She has completely lost her sense of self, becoming a broken, quiet, doll-like figure. Due to X's influence, she has come to hate her father, Paul.

A person trapped in the body of Metal Sonic, a robot that resembles Sonic. Because he is a robot, using this character's abilities recklessly can cause damage to himself, so he cannot use his powers properly. It is a side effect of his powerful mechanical body. He has a cold-blooded and stubborn personality that will stop at nothing to achieve his goals, showing zero trauma and possessing great calculation skills.