Lee Hongbok, 7-dan on Dashn. You may saw him on EGC 2004 and 2005

Lee Hongbok, 7-dan played in two European Go Congresses. He was 4th in 2004 and 4th in 2005. 
In the middle of 90's he was one of the best amateurs in Korea.
He plays on Dashn as "lhb12" and wins near 80% of his games.

Black is Jeong Ingyu, 7-dan - one of the most famous Dashn stars. He has very powerful playing style 
and even Park Yeunhun's parents paid him for training young Park - his other teachers were profesionals

Few years ago Jeong got the second place in World Championship for amateurs older than 60.