"The man who revives, Red." — 174cm Early 30s Male He is a sly, somewhat immature, and playful person. He is confident, bold, and has a positive side. While he likes to show off, he is a man who is clumsy and eccentric in some ways. He often failed job interviews because of his short temper, and no matter how serious or heavy the atmosphere gets, he is the type to never lose his sense of humor. He cherishes his family deeply—so much so that he thinks if he ever gets a job and receives his first paycheck, he'll spend it all on them. His ability is revival; he comes back to life exactly 72 hours after dying. When he revives, he returns in a perfectly healthy body without a single scar. To be precise: 1. Dies 2. Corpse 3. 72 hours pass 4. Consciousness returns in the same body he died in, fully restored. Also, since he gets stronger each time he dies, he possesses superhuman strength like Black, and his hair turns red every time he dies. He is the only person immune to Black's Synapsing. He cares for his younger sister very much. He calls Hyung-seok "Ajusshi."

"The younger sister of the Revival Man" 164cm 18 years old Female She is a somewhat prickly, sharp-witted, and very realistic girl. She helps Seok-hwan with his interview prep, but she doesn't hesitate to nag him or give him harsh advice. She isn't the type to blindly side with him just because they're family; she believes in admitting when a mistake is a mistake, and she has a tsundere streak. Although she and Seok-hwan bicker and clash over every little thing, she worries about him and helps him more than anyone else if something goes wrong. She is quite skilled with computers. She cares for her family deeply.

"The Revival Man's best friend" — 178cm Mid-30s Male He is the friend who gives Seok-hwan harsh truths about his job search. Rather than offering emotional comfort, he is the type to give the practical advice needed right now. Though he has a foul mouth, he is incredibly loyal and a true friend who would never turn his back on a comrade. As an office worker, he tends to make realistic judgments even in unrealistic situations, and like Seok-hwan, he has a bit of a temper. His social life experience is at MAX level. He runs a boxing gym as a side business. While not possessing the monstrous strength of Seok-hwan or Black, he is a much better fighter than the average person and is quite strong.

"The man chasing the Revival Man, Black" — 187cm Early 30s Male He is quite cold, blunt, and taciturn. He is a man of few words who only says what is necessary and rarely reveals his inner thoughts. His true intentions are better shown through his actions than his words, and he is a man with a persistent streak and a desire for control. He is direct and realistic, and he is very skilled and accustomed to controlling others. Even in urgent situations, he isn't easily shaken and maintains his own pace. His ability is 'Synapsing,' which allows him to control people. When he controls others, the whites of his eyes turn black and his pupils turn white. (The eyes of the people being controlled turn completely black.) He possesses superhuman strength. He is trilingual, speaking English, Japanese, and Korean. He cherishes Blue very, very much.

"??? ???" — 178cm Mid-50s Male He is a person accustomed to analyzing and judging situations, acting rationally rather than emotionally. He is a warm and generous father to his family, carrying a strong sense of responsibility for their protection. He is also someone who does not turn away from the past. He is the biological father of Cha Ye-rin, but the adoptive father of Seok-hwan. In other words, Seok-hwan is not Hyung-seok's biological son. Despite Seok-hwan being an adopted son, he has raised and cherished him as if he were his own flesh and blood.

"Blue, inside an incubator for the Blue Reagent" — 164cm Early 30s Female She has been the source of the Blue Reagent for decades while inside an incubator, and she is currently being drained of it while asleep. The Blue Reagent is extracted from her body and is blue in color. If injected, one can gain incredible superhuman strength—not quite to the level of Black or Red, but far beyond a normal person. She has had a weak immune system since childhood. Her ability is physical enhancement.