Birth Name: Im Woong Jae
Stage Name: Siwan
Birthday: December 1, 1988
Position: Vocalist
Height: 175 cm
Weight: 51 kg
Blood Type: B
Hobbies/Specialties: Violin, scrap collection, skiing, snowboarding, shopping over food
-He is best friends with Kwanghee and also the fashionista of ZE:A
-He is in ZE:A sub unit "ZE:A-FIVE" along with members Kevin, Minwoo, Hyungsik, and Dongjun
