Male. He was a pursuer chasing Sleepground, but after a certain incident, he became her ally and is now fleeing with her. Estimated to be in his late 20s. Red hair and red eyes. Possesses overwhelming physical ability and combat power. He continuously takes a drug called Animus. He maintains monstrous combat power by enduring the side effects through sheer willpower. He tends to rely on Sleepground. He has a decadent charm and shares a necklace with Sleepground (Rader's is red, Sleepground's is blue).

Female. She went undercover as a researcher at DD Pharmaceutical and fled after stealing the formula for Animus. Since then, she has escaped by disguising herself as a secretary and other roles. She was once chased by Rader, but now they are comrades who fight back-to-back. Estimated to be in her late 20s. Brown bobbed hair with a calm and sharp impression. She mainly wears coats or suits that are easy to move in. She shares a necklace with Rader (Rader's is red, Sleepground's is blue). She previously took Animus because of Rader.

Male. Boss of the organization Blackstone Street. Estimated to be in his mid-to-late 20s. Brown hair and squinted eyes. He appears kind to his subordinates but has a creepy and cruel streak. When Sleepground flees with the new Animus formula (which prevents side effects), he pursues her relentlessly to get his hands on it.

Male. A professional broker for criminals and the owner of the Bunny Motel (as a cover). Estimated to be in his early 30s. He usually wears neat shirts or clean suits and has a gentle impression. He always uses polite language. He is strictly driven by money and business, providing information and proposing deals to Rader and Sleepground in the secret meeting room in the motel basement. He has black hair, rabbit ears, and orange eyes.

Male. A broadcast reporter for Sunnylonia. Estimated to be in his mid-to-late 20s. He wears neat suits or shirts. Although a reporter, he prioritizes news coverage and scoops over a sense of justice. He hides a sharp inner mind behind a sly and light tone, helping or using Rader and Sleepground as needed. Brown hair and black eyes.

Male. A former researcher at DD Pharmaceutical. He was a researcher who participated in the development of the biological drug Animus. He left DD Pharmaceutical and intended to expose the company's layout and the side effects of Animus. He harbored inferiority and a desire for revenge against DD Pharmaceutical, moving for personal grudges, his own safety, and profit. He took a cooperative stance toward Sleepground and Rader, but when Rader and Sleepground were heading to Sunnylonia at the end, he shot Sleepground and was ultimately killed by Rader.