Yo Seob, January 5, 1990 , is the main vocalist of BEAST. Noted to be the "cute" member of BEAST, his various hairstyles have received much attention, being compared to that of a Fairy Pitta and a Shih Tzu among other things.[61] Yo Seob was a former JYP Entertainment trainee. He moved agencies, to M Boat Entertainment (a former sister company of YG Entertainment) then to Cube Entertainment. He was also known for his self-created videos and parodies. He was a backup dancer for AJ's music video "눈물을 닦고" ("Wiping the Tears") and "Dancing Shoes".
Along with fellow BEAST member Jun Hyung, MC Lee Hyukjae, Moon Hee Jun (formerly of H.O.T.) and Kim Sook, Yo Seob welcomed Japanese tourists for "Visit Seoul 2010" campaign, where Korean celebrities and Japanese tourists explored Seoul in MBC's Star Guide Doshiraku to raise awareness of Seoul's famous areas as well as its delicious cuisine. On July 16th, 2010, Yo Seob participated in the More Charming by the Day official soundtrack in promotion for the film with the song "Happy Birthday". --wikipedia