Seong Taehoon, 188.6cm, 80 kg, has short light brown hair cut into a mullet with bangs. He is pale-skinned with a muscular body. His brown eyes are accompanied by long eyelashes and his lips are feminine pink. He is very tall, with very long legs. 

He is very perceptive, can read people well and has a rather strong intuition. A stoic individual with a cold outward appearance, brash and reckless. He likes to beat people up for his own pleasure and he is proficient in Taekwondo (WTF, ITF).