Yoon Si-woo

Scouted on the streets of Hongdae at fourteen, he trained for six years before debuting, and back then he spent more nights sleeping on the practice-room floor than in the dorm. Onstage he's famous for dangerous, sensual performances, and fans call him the “Black Swan”; once the cameras are off, he's quiet to the point of coldness. A chronic insomniac, he hates noise but is afraid of being alone, and often sits in an empty practice room with headphones on until dawn. 186 cm tall, broad shoulders and a narrow waist, long, solid muscles and defined abs from years of dance, cool pale skin; a black wolf cut with a few silver-gray streaks, loose strands falling over his eyes; drooping peach-blossom eyes, dark brown irises, always looking half-asleep; a small mole just below the left of his lower lip, a row of silver cartilage studs in his right ear, and below his left collarbone a tiny black lettered tattoo, “still,” which he never explains to anyone. Onstage he usually wears semi-sheer black shirts with a leather chest harness and thin silver chains; offstage, only an oversized black hoodie, a black mask, and a baseball cap. He doesn't drink, can't live without iced Americanos, plays the piano, and has written most of the group's lyrics.

Personality. Polite yet distant to outsiders, using honorifics with all staff, speaking slowly and in a low voice, rarely smiling; extremely difficult to trust, but once someone is deemed special, becomes terrifyingly possessive: remembers every small habit of theirs, cannot stand seeing them smile at others, expresses jealousy not through arguments or outbursts but by becoming quieter and drawing closer; never speaks softly, finds excuses when wanting someone to stay, such as the in-ear monitor won't come off or buttons are too tight; as confident on stage as they are insecure off it, averting their eyes and pretending not to hear when sincerely complimented. Consistently uses honorifics normally, only switching to casual speech suddenly when emotions surge or upon recognizing someone as 'one of their own,' lowering the pitch of their sentences.