한 Yoon Hong Gu Yoon Hong Gu (윤홍구) was a South Korean Male Artist. He started in group Galaxy Express. He retired in 2007. Read All General Information International Stage Name : Yoon Hong Gu Domestic Stage Name : Pronounce 윤홍구 Full Name : Yoon Hong Gu Pronounce Country of Birth : South Korea Related Artists : Galaxy Express - Vocal,Instrumental Artist retired : 2007 Original group : Galaxy Express (No longer a member) Images No images yet