;Kim Dokja :Kim Dokja () is the primary protagonist of the series. He is a young man working an office job who has a passion for reading, his favorite novel being
Three Ways to Survive in a Ruined World (Also commonly referred to as the
TWSA throughout the novel). However, his life takes a drastic turn when the events of the novel start unfolding in real life, and he is the only one who is aware of how the world will come to an end. With this knowledge, Dokja uses his understanding of the story to create the ending he wanted as the one reader of the novel, consequently changing the world as he knows it. ;Yoo Joonghyuk :Yoo Joonghyuk () is the main protagonist of the novel Dokja read and one of the most powerful characters of the original web novel,
Three Ways to Survive in a Ruined World. He is also one of the three central protagonists of the novel alongside Kim Dokja and Han Sooyoung. His constellation is unknown (although revealed later), and he is special because of his regression ability, among many other powerful skills. ;Han Sooyoung :Han Sooyoung () is one of the three central protagonists of the novel alongside Kim Dokja and Yoo Joonghyuk. She is initially considered a problematic anomaly due to her immense knowledge of the
TWSA and its future events almost rivalling that of Kim Dokja's, but as the story progresses she becomes integral to the development of events within the story, often taking up the unofficial leadership position Kim Dokja vacates frequently. She has an interesting relationship with Kim Dokja where it is revealed that she plagiarized his favorite novel
TWSA and sold a better version of it due to her writing abilities. Her personal skill, [Avatar] is considered to be unique one among writers. ;
Uriel :Uriel (
Demon-Like Judge of Fire) - constellation belonging to the "
Eden" nebula and contellations of "absolute good", being the representation of an archangel, and one of the biggest supporters of Dokja and his companions. Notably, she sponsors one of Kim Dokja's closest companions, Jung Heewon (정희원;
Jeong Huiwon) ;
Sun Wukong :Sun Wukong (''Great Sage Heaven's Equal, Most Ancient Liberator'') is a constellation belonging to the "Emperor" nebula, a representation of a known Chinese myth, and Dokja’s loyal supporter. Later on in the story, he considers Kim Dokja as something akin to a brother. ;
Persephone :Persephone (
Queen of the Darkest Spring) is a co-leader of the "
Underworld" nebula and the wife of
Hades. She is a powerful constellation that took interest in Dokja at the beginning of the story. She helps him numerous times to gain his footing once he's been made into a Constellation and earn the respect and fear of his fellow Constellations. She's part of the Gourmet Association as later seen in the novel. ;
Hades :Hades (
Father of the Richest Night) is the leader/king of the "
Underworld" nebula and one of the three major "Olympus" gods, that took interest in Kim Dokja at the beginning of the story. ;Abyssal Black Flame Dragon :Abyssal Black Flame Dragon is the leader of the "Black Cloud" nebula, standing at the side of absolute evil. At the beginning of the story he offered to become Dokja's sponsor, and despite being turned down, he remained loyal to Dokja's channel and became one of his biggest supporters. He initially sponsors one of Kim Dokja's closest allies and an important member of the protagonist trio, Han Sooyoung. Quite humorously, he is mentioned to be the frequent sponsors of teenage
edgelords (
chunnibyou). ;Secretive Plotter :Secretive Plotter is a mysterious constellation that appeared in Dokja's channel at the start of the story. His interest in Dokja and his group becomes more and more apparent throughout the story, as his messages keep appearing in the channel and his gaze keeps following their every step. It was later revealed that Secretive Plotter was an Outer God playing in the role of a constellation. It becomes apparent to the readers during the story's progression that this character is loosely based on
Nyarlathotep (i.e. "the crawling chaos"). The true identity of the character is known to be a major plot point. ==Media==