There’s not much information about his brother. has also starred in various television dramas and movies such as Pure Love (2016), My Annoying Brother (2016), Positive Physique (2016), Room No.7 (2017), 100 Days My Prince (2018), Along with the Gods: The Two Worlds, and Swing Kids (2018). Apart from his group's activities, D.O. Kyungsoo’s family member that has been always discussed by his fans is his brother Do Seung-soo, who is three years older than him. Doh Kyung-soo (Korean: 도경수; born January 12, 1993), better known by his stage name D.O., is a South Korean singer and actor. (디오), is member of the group EXO and its sub-group EXO-K. google.com Do Kyung-soo’s Family Background tumblr.com. Do Seungsoo (도승수) is D.O. They have three years of difference Childhood picture of Kyungsoo and Seungsoo He is best known as a member and one of the main vocalists of the South Korean-Chinese boy group Exo. Kyungsoo’s father was a professional painter, and his mother was a hairdresser. He is also known for being an actor. 's older brother. Do Kyung-soo (Hangul: 도경수), better known as D.O. Kyungsoo has an older brother named Do Seung-soo.