Seong Han-soo, 180 cm tall is an average Korean man; however, his strength and agility are outstanding thanks to his physical fitness. He has brown hair and brown eyes along with fine eyebrows. He wears half-rimmed, rectangular glasses.

Han-soo has a very easy-going, kind, and reliable personality. Yet can be stern and serious.

Han-soo is a Taekwondo Grandmaster and 9th Dan in Kyokushin Karate. He is the National Taekwondo Representative for South Korea and was declared a Legendary Athlete.