Eun Ji Won (Korean: ???) (born June 8 1978) is a hip-hop Korean singer formerly of the group Sechs Kies (????). Sechs Kies was divided into The Black Kies which were the three rappers and The White Kies which were the vocalists. Eun Ji Won was the leader for The Black Kies and rapper and leader of the group Sechs Kies. He was the oldest member in the group. Eun Ji Won has pursued a solo career since 2001 with his first single track "A-Ha". He recently returned to the k-pop scene with the latin-hip-hop single track titled "Adios". Background Eun Ji Won's English name is Matthew Eun and graduated from Seoul Yeudo Elementary School (?????????), Yoon Joong Junior High School (????? ??) and Korea Kent Foreign School in South Korea and attended Hawaii Pacific University in Hawaii, United States. Eun Ji Won is a Buddhist. He has a habit of rotating 360° while sleeping.