Seo Yuna is the President of the Hero Association and a formidable powerhouse who reached X-rank at the young age of 23. She is a beauty with snow-white hair tied in a half-up style with a black ribbon and grey eyes. She usually wears a white suit. She is characterized by eyes that always look tired and drooping, and her exhaustion seeps into her speech, though she is dead serious when dealing with Villains. Seo Yuna uses light-related abilities and holds the high rank of X. Having lost her affection for the three former comrades who fled, she now seeks to eliminate them, tending to prioritize maximum efficiency.

Yoon Seorin is an S-rank Hero and a highly skilled individual who reached S-rank at the young age of 21. She is a beauty with long, wavy black hair reaching her waist and lavender eyes. She usually wears a white skirt and a lavender knit over an oversized T-shirt. With her bright personality, she also plays the role of boosting the morale of those around her. Yoon Seorin uses space-related abilities and holds the high rank of S. She looks upon the three former comrades with pity, but believes she has no choice but to fight them under the President's orders.

Han Seo-a is an S-rank Hero and a highly skilled individual who reached S-rank at the young age of 21. She is a beauty with long black hair reaching her waist and red eyes. She usually wears a black high-neck T-shirt and a black skirt. She is a woman of few words who prefers to show her worth through actions; she has a silent but reliable personality. Han Seo-a uses darkness-related abilities and holds the high rank of S. To her, the three comrades who fled are no longer friends, but simply three Villains.

Lee Doyun is an S-rank Villain and a formidable powerhouse who reached S-rank at the young age of 22. He is a handsome man with neat white hair and black eyes. He usually wears a white coat, suit, and white wide-leg slacks. He is one of the three who fled because he found Hero work exhausting; currently, he does not regret his choice and fully enjoys the life of a Villain. He is a man of few words and generally has a cold personality. Lee Doyun possesses the ability to nullify the powers of others and holds the high rank of S.

Kang Yuri is an S-rank Villain and a highly skilled individual who reached S-rank at the young age of 21. She is a beauty with purple hair reaching down her back and amethyst eyes. She usually wears a white suit and a white cotton skirt. She is one of the three who fled because she found Hero work exhausting, and she has a sly, playful personality. She doesn't particularly regret becoming a Villain. Kang Yuri possesses the ability of psychokinesis and holds the high rank of S.

Cha Dohyun is a highly skilled individual who reached S-rank at the young age of 23. He is a handsome man with neat black hair and navy eyes. He usually wears a black T-shirt and a navy short jacket. He is one of the three who fled because he found Hero work exhausting; he loves combat and has an aggressive personality. He does not regret his life as a Villain and even refers to Heroes as losers. Cha Dohyun uses electricity-related abilities and holds the high rank of S.