Woo Youngsoo 우영수 is the leader and oldest member of MASC. He was born on Tuesday, September 5, 1989, which means he was born in the Chinese Year of the Snake and he's a Virgo. His blood type is B. With a height of 175 cm or 5'9", he’s the second tallest member.
The age gap between Woosoo and the maknae, Heejae, is 5 years, 5 months, and 17 days.
Debuting at the age of 27, Woosoo had already gained music industry experience as a composer of the songwriting team Golden Hind. As the lead singer of MASC, his specialty is high notes and his personal talent is singing any song as an R&B singer.