Seonghyeon

Seonghyeon's full name is Eom Seong-hyeon (엄성현), and he also goes by the English name Sean. He was born in Seo-gu, Daejeon, South Korea. Source: KProfiles

He was scouted by BIGHIT Music at Lotte World in 2018 while he was still in elementary school, marking the beginning of his path toward becoming an idol. Source: NamuWiki

Seonghyeon has a younger sister, born in 2012. Source: CORTIS Fandom Wiki

His well-known nicknames include Eomji, Eomsal, and "Eomma," which means "mom" in Korean—a playful nickname given because of his caring personality. Source: KProfiles

Before fully focusing on music, Seonghyeon trained in both taekwondo and hapkido, experiences he says helped develop the discipline and focus he brings to performing. Source: Starvia

Although he officially joined BIGHIT Music in 2021, Seonghyeon's overall trainee journey lasted about five years, beginning when he was 13 years old in Korean age. Source: KProfiles

During his trainee years, Seonghyeon reportedly created around 100 self-produced songs, building an impressive personal catalog long before CORTIS officially debuted. Source: CORTIS Fandom Wiki

He contributed as a songwriter on all five tracks of CORTIS's debut EP COLOR OUTSIDE THE LINES and also helped create the choreography for "GO!" Source: Kpopping

Seonghyeon is left-handed and wears approximately a 270 mm shoe size. Source: KProfiles

His favorite music genre is psychedelic rock. Interestingly, he has shared that he didn't originally listen to much hip-hop or R&B, only developing an appreciation for those genres later during his training. Source: KProfiles

He dislikes mint chocolate and has named winter as his favorite season. Source: KProfiles

Seonghyeon considers himself both a cat person and a dog person. Outside of music, he enjoys watching movies and dramas, as well as playing basketball, skateboarding, and cycling. Source: KProfiles

If he could spend a day as any fictional character, Seonghyeon says he would choose Ethan Hunt from the Mission: Impossible series. Source: Starvia

Both fans and fellow CORTIS members frequently describe Seonghyeon as the funniest member of the group. While he takes songwriting seriously and pays close attention to detail, he's also known for naturally lifting the mood with his humor. Source: Starvia

Seonghyeon enjoys exploring different types of coffee, saying that trying new brews has become a small ritual that helps put him in a good mood. Source: Kpopping