Yoo Sangah is a deeply kind person who has a strong sense of responsibility. It is not an act to conceal her true nature but an intrinsic part of her personality, no matter the external circumstances. She always tries to be a pillar of strength for others, often to the point of self sacrifice.
Jung Heewon is a member of Kim Dokja's party. She was part of the marginalized group from Geumho station. She becomes one of the most vital party members, sometimes referred to as the "sword" of the group.
Lee Jihye is an ex-high school student and a current member of <Kim Dokja's Company>. She was originally a character in Ways of Survival, fighting under Yoo Joonghyuk's leadership and one of the 100 strongest incarnations.
Lee Gilyoung is a young boy who is a member of Kim Dokja's party. He had the insects that allowed some of the party to survive Main Scenario 1. He is not a character from the original novel.
Shin Yoosung is one of Kim Dokja's and Yoo Joonghyuk's party members, and Kim Dokja's sponsored Incarnation. She is a character from the original Ways of Survival, and the child whose 41st round adult self appeared in Main Scenario 5 as the Disaster of Floods.