leader of the group is  Kim Taeyeon . The other members are  Jessica Jung ,  Lee Soon Kyu  (Sunny),  Stephanie Hwang (Tiffany),  Kim Hyoyeon ,  Kwon Yuri ,  Choi Sooyoung ,  Im Yoona  and  Seo Joo Hyun . Watch  SNSD - Dangerous Boys After clicking our links please wait for 5 seconds