Gwak "Bdd" Bo-seong (Hangul: 곽보성) is a mid laner for Kingzone DragonX
Gwak "Bdd" Bo-seong joined CJ Entus as a sub mid laner in April 2015 but was unable to play a single game for them due to being underage. He finally turned 17 on March 1st, 2016, and he made his competitive debut in the 2016 LCK on March 2nd in a series against Kongdoo Monster, which CJ won 2-1. Bdd is a versatile mid laner. Despite his ability to play several meta and non-meta champions, Bdd is especially fond of assassins, citing Zed as one of his favorite champions to play.
During the 2016 LCK Spring Season, CJ went 8-10 in sets, finishing in eighth place overall for the spring split. Sky played as the starting midlaner for CJ during the first round robin while Bdd was still underage, but Bdd assumed the starting mid position after he turned 17, just in time for the second round robin. However, it was not enough to make playoffs.
CJ Entus had a very poor showing in the 2016 LCK Summer Season, going 3-15 total in set score. Neither Bdd's benching and subsequent reinstating as the starting mid laner seemed to make no difference in their abysmal results. Locked into tenth place in the LCK season, CJ Entus participated in the 2017 LCK Spring Promotion. In the first round they were swept 2-0 by Kongdoo Monster, bringing them down to the loser's bracket. There, they beat SBENU Korea 2-0 before falling to ESC Ever in a 3-0 sweep to become relegated from the LCK. This marked the first time an original Kespa team was relegated from the LCK.