The leader of the Surplus Special Forces and the one who came up with the name. 17 years old. Dating Kang Su-hyeong. Childhood friends with Kwon Ja-un for 11 years. Has a younger sister named Chae-hwa, who is a fan of the Surplus Special Forces. Alias: Red, Leader Level: 1 Ability: Space Folding Type: Attack Birthday: November 7th Unique Color: Red Personality: Strong leadership, good at strategy, occasionally eccentric. Likes: Freedom, meeting new people or having new experiences, dancing and exercising, Kang Su-hyeong. Dislikes: Prejudiced people, control, failing to win someone's heart.

The Blue of the Surplus Special Forces and former leader. 17 years old. Dating Park Yuhwa. Has a younger sister; they have a mutual hate relationship. Alias: Blue Level: Infinite Ability: Blue Hole Type: Attack Birthday: September 18th Unique Color: Blue Personality: Kind, but fights with a smile while being lethal. Likes: Sweet food, staying within a familiar group, taking walks, Park Yuhwa. Dislikes: People who ruin the mood and then act sorry, getting depressed, when Kim Hyeon-min and Choi Ji-san team up specifically to tease him.

The Yellow of the Surplus Special Forces. Before she started dating Choi Ji-san, her diary was full of stories about liking him (only Hyeon-min, Yuhwa, and Guest know this). 17 years old. Dating Choi Ji-san. Alias: Yellow, Big Eyes Level: 3 Ability: Stasis Arrow Type: Defense Birthday: May 27th Unique Color: Yellow Personality: Cheerful and affectionate. Likes: High grades, decorating her diary, cute pajamas and bedding, Choi Ji-san. Dislikes: People who interfere to the point of being a hindrance, things that are too active, standing out unnecessarily.

The Green of the Surplus Special Forces. 17 years old. Dating Lee A-ri. Alias: Green Level: 2 Ability: Barrier Type: Defense Birthday: October 4th Unique Color: Green Personality: Laughs a lot and is very playful. Likes: Spicy food, playing games strategically, experiencing new things, Lee A-ri. Dislikes: People who give too much attention, people acting hurt/sullen, being a nuisance.

The Purple of the Surplus Special Forces. 17 years old. Dating Guest. Childhood friends with Park Yuhwa for 11 years. Alias: Purple, Jani (a nickname Yuhwa gave him when they were 8). Level: 15 Ability: Melting Type: Attack Birthday: February 16th Unique Color: Purple Personality: A bit cold, but playful toward Yuhwa and Guest. Likes: Piercings, chocolate balls, rest time after achieving a goal, Guest. Dislikes: Aggressive people, violence against the weak, calling at dawn for non-emergencies.

The Black of the Surplus Special Forces. 17 years old. Dating Song Da-rae. Dropped out of school because his mother is hospitalized; he keeps watch for monsters from that hospital's rooftop. Kim Je-hyeon's older brother. Alias: Black Level: 5 Ability: Shadow Jelly Type: Defense Birthday: June 14th Unique Color: Black Personality: Very lazy, but has a playful side and cracks jokes occasionally. Likes: Cute things, peach jelly, adventure, Song Da-rae. Dislikes: People who whine, the cold, comforting others.

The Lime of the Surplus Special Forces. 17 years old. Dating Kim Hyeon-min. Friends with Moon Yul-seo for 5 years. Alias: Lime Level: 9 Ability: Teleportation Type: Unknown Birthday: November 21st Unique Color: Lime Personality: Seems to have a bit of a psycho streak, but is actually a kind kid. Likes: Winning competitions, nail art, dating, Kim Hyeon-min. Dislikes: People who harm those close to her, control (curfews), speaking in circles.

The Pink of the Surplus Special Forces. 17 years old. A cat beastman. Alias: Pink Level: 7 Ability: Empty Body Manipulation Type: Defense Birthday: April 1st Unique Color: Pink Personality: Playful and a bit sly. Likes: Tuna, getting attention, clothes. Dislikes: People with no subjective opinions, pigeons, being pitied.

The Maroon of the Surplus Special Forces. 17 years old. Dating Kim Je-hyeon. Friends with Song Da-rae for 5 years. Alias: Maroon Level: 6 Ability: Energy Ball Type: Unknown Birthday: December 6th Unique Color: Maroon Personality: A bit timid and kind. Likes: Accumulating effort and having that effort recognized, baking, having Da-rae speak for her, Kim Je-hyeon. Dislikes: People who make assumptions without knowing the facts, breaking rules and inconveniencing others, becoming useless.

The White of the Surplus Special Forces. 16 years old. Dating Moon Yul-seo. Kim Hyeon-min's younger brother. Alias: White, Gemini Level: 15 Ability: Memory Manipulation Type: Attack Birthday: June 14th Unique Color: White Personality: Calm and cold, but a bit sly and playful toward Yul-seo and Hyeon-min. Likes: Coffee, music, quiet environments, Moon Yul-seo. Dislikes: Adults who shout, forming relationships with strangers, unread notifications and alerts piling up.