Today is EXO-K's D.O's birthday!! D.O is one of the two main singers in EXO-K. D.O is turning 20 today, still super young, but he isn't the youngest in EXO-K. His birth name is Do Kyung Soo. I love D.O's eyes... Actually I think his stage name, D.O, looks kind of like his eyes; very big, very round. When he opens his eyes up all the way they are huge; I think one fan once asked who the guy was with "the big goo-goo eyes". He has a great voice, my personal favorite member of EXO-K, he can beatbox, which was surprising to find out... Happy Birthday D.O!!!