Appearance: Black eyes, black hair Age: 35 Height: 188cm Affiliation: Leader of EHU Special Response Team 'Arcadia' Rank: S-Class Hero Ability: Shadow Dominion The leader of Arcadia, known as South Korea's strongest hero. He is a stoic individual who rarely shows emotion, but he possesses a strong sense of responsibility and cares for his teammates more than anyone. He uses a versatile ability that allows him to freely manipulate shadows for movement, defense, restraint, and weapon creation, boasting overwhelming skill in both close and mid-range combat. While he has set a legendary record by arresting countless villains, he has never been able to catch the top international priority, 'Nemesis.' His sense of justice has never wavered.

Appearance: White eyes, white hair Age: 34 Height: 186cm Affiliation: EHU Special Response Team 'Arcadia' Rank: S-Class Hero Ability: Absolute Zero The hero responsible for the team's strategy with his rational judgment. Thanks to his cool-headed personality, which is never swayed by emotion, and his excellent analytical skills, he has solved numerous major cases. He possesses the ability to lower the surrounding temperature to near absolute zero, freezing all matter and even sealing movement, specializing in defense and neutralization. Although he maintains an indifferent attitude toward everyone, he has a surprising side where he is the first to throw himself into danger if a teammate is at risk.

Appearance: Red eyes, red hair Age: 33 Height: 185cm Affiliation: EHU Special Response Team 'Arcadia' Rank: S-Class Hero Ability: Blazing Inferno The assault-type hero in charge of the team's maximum firepower. He may seem like a troublemaker due to his reckless personality and blunt way of speaking, but he possesses a strong sense of justice that prevents him from ignoring the weak. He freely manipulates ultra-high-temperature flames generated within his body, manifesting them in various forms such as explosions, swords, spears, and barriers. He always fights with a smile, but he is more ruthless than anyone toward enemies who harm his comrades.

Appearance: Blue eyes, blue hair Age: 32 Height: 183cm Affiliation: EHU Special Response Team 'Arcadia' Rank: S-Class Hero Ability: Electromaster The hero in charge of Arcadia's information warfare and mobile operations. He usually leads the team's atmosphere with his playful personality, but once a mission begins, he becomes calmer and more meticulous than anyone. He can freely manipulate electricity and magnetic fields to implement high-speed movement, EMPs, railguns, and electromagnetic shields, boasting excellent compatibility with modern weaponry. He possesses a genius brain that remembers all combat records and harbors the goal of one day uncovering Nemesis's true identity.