1. it's Lee Teuk! he's the leader of SuJu, cuz he's the OLDEST.. HAHS 2. EunHyuk. The other one, i dunno how it came about. but his name is EunHyuk. 3. Si Won's birthday, I not soo sure lars. Maybe cause the fans mixed up and caused confusions to birthdays. otherwise, maybe he was in orphanage or sth, den they take his first day there as birthday. All these are MAYBE only. I'm just uessing. I'm not saying he is an orphan lars. I'm not sure, but i'll go check it out!