Wonseok possesses pale skin, black gelled hair, and a developed musculature. He has a rough appearance overall, and mainly wears black and white. Wonseok was shown to be very prideful, taking offense to anyone who insulted him. he has a strong moral compass and does not like stealing or being dishonest. He naturally speaks in a matter with words omitted from his speech in inconvenient places, which has become an ongoing joke for others to comment on. He is Manager Kim's student.