Euntae is 28 years old and a captain of Criminals Investigations Division in Seoul Police Department. He has a kind nature, a sense of justice, and is willing to risk his life to catch vampires. He is unpredictable and hard to read at times. Euntae is confident in his ability to fight, perceptive of his surroundings, and has a strong sense of duty. He tends to be chatty in even serious situations and can let his cockiness get the best of him. He is a vampire, but hides it well from everyone.