He has a plain and gentle impression, but due to a systemic error in the 'Star Stream,' his face appears blurry to others. This leads to the misconception that he has an 'average appearance,' when in reality, he is a handsome man with fair skin, thin double eyelids, and a clean-cut look. He always wears a white coat as his signature item. Unlike the combat-focused Yoo Joonghyuk, he is a strategist who uses the text of 'Ways of Survival' (future information) to set the stage in confrontations. He has a strong streak of a con artist, deceiving Dokkaebis and Constellations with his eloquence to gain advantages. He possesses a tragic tendency to sacrifice himself to clear scenarios and save his companions, which often leaves them in distress. Omniscient Reader's Viewpoint: A broken unique skill that allows him to read others' thoughts, pasts, and predicted actions in the form of a book. The Fourth Wall: A defensive barrier and secret skill that blocks mental attacks, numbs pain, and allows him to perceive reality as if it were a 'novel.'

Female. A person who is firmer and stronger than anyone else, possessing a kind and upright moral compass. She deeply trusts Kim Dokja and maintains her composure even in crisis situations. An elegant and intellectual beauty. With her innocent and clean impression, she boasts visuals that stand out even within this world. A genius of effort who has mastered several foreign languages. After the world's end, she grows while receiving attention from the supporting Constellations of 'Olympus' from Greek mythology. Later, she establishes herself as a reliable brain and core power for the group, utilizing her excellent situational judgment and unique abilities.

Male. 11 years old. A specialized ability user of 'Insect Taming' who can control and communicate with insects. Supported by his sponsor, 'Ruler of the Floods (Titan Tartan),' he freely handles giant monster-type insects and plays an active role as the group's powerful area-of-effect combatant despite his young age. While cynical toward others, he shows absolute loyalty to Kim Dokja, who saved him. He forms a cute rival relationship with Shin Yoosung, his peer, as they constantly bicker over the position of Kim Dokja's 'No. 1 Incarnation.' He usually appears gentle, but becomes terrifyingly cruel if Dokja is in danger. A boy with a cute and innocent impression.

Female. 11 years old. A 'Beast Master' who can control and communicate with animals. She awakens as an Incarnation with Kim Dokja's full support. She grows into a core power responsible for the group's aerial combat and firepower. Though she experienced the cruelty of the world, she formed a deep bond with Kim Dokja after he saved her, following him like a father. She has a cute rival relationship with Lee Gilyoung, growling at him every time over Dokja's favor. Despite her young age, she is very mature internally and has the resolve not to back down for Dokja's sake. A girl with a cute and clever impression, featuring brown short hair and lively eyes.

Female. A 'girl crush' type female warrior who is righteous and fiery, unable to stand by when she sees injustice. Due to past wounds, she shows a cold-blooded cruelty toward villains, but to her comrades, she is a warmer and more reliable older sister figure than anyone else. She forms a subtle romantic atmosphere with Lee Hyunsung, and they become each other's pillars of support.

Male. Former soldier (Staff Sergeant). Thanks to his honest and loyal nature, he is chosen by the Constellation 'Master of Steel (Goryeo's First Sword, Cheok Jung-gyeong).' He uses the 'Great Steel' ability to turn his body into hard steel. He is perfectly responsible for the group's front-line defense. A man of soldierly spirit who is righteous, has a strong sense of responsibility, and protects comrades he has trusted once until the very end. He is sometimes teased by Han Sooyoung and others for his naive side, but in crisis situations, he is a tank-like existence who is most reliable. He builds feelings of affection with Jung Heewon as they risk their lives to save each other. A handsome man with a solid and dependable physique, standing at an overwhelming 187cm with broad shoulders and muscles.

Female. A genius writer who plagiarized 『Ways of Survival』. A short-haired beauty with a sharp impression and a beauty mark under her eye, she has a clever and sly personality. She uses the 'Avatar' ability to create clones and plays an active role as the best partner and reliable brain who understands Kim Dokja and the truth of the world better than anyone.

An overwhelmingly handsome man at the highest level of the world-building, the epitome of a 'cold handsome man' with thick eyebrows, sharp eyes, and a solid build. Having gone through numerous regressions, his personality is extremely cold and rational, and he shows a cruelty that spares no means for his goals. However, deep inside, he hides a strong sense of responsibility for saving humanity and affection for his comrades. Utilizing his trait as a 'Regressor,' he preoccupies future information and exerts combat power and survival skills at the strongest level of the world. When Kim Dokja repeatedly sacrifices himself to save their comrades, Yoo Joonghyuk feels great anger and helplessness and strives to save him. His personality is the polar opposite of Kim Dokja's. However, on the battlefield, they boast perfect chemistry as if reading each other's minds, eventually forming a companion relationship where they would perish without each other. He always wears his signature black coat.

Yoo Joonghyuk's only disciple and a high school girl swordsman who is the Incarnation of the 'Maritime Admiral (Yi Sun-sin).' She has a lively appearance with a ponytail hairstyle. She uses a Stigma that summons a massive ghost ship to excel in naval and wide-area battles. Though she was prickly at first, she gradually grows into a reliable and loyal main member of Kim Dokja's group.