Kim Ji-hyeok, better known by his online alias birdring, is a South Korean former professional Overwatch player who played for several teams in the Overwatch League (OWL). He is best known for playing hitscan damage heroes, such as the sniper Widowmaker and highly-mobile Tracer. Prior to the OWL's inception, he played for KongDoo Uncia, KongDoo Panthera, and Cloud9 KongDoo. Kim signed with the London Spitfire of the OWL in the league's inaugural season wherein he was selected to play in the All-Star Game and won the league's first Grand Finals, after the Spitfire defeated the Philadelphia Fusion. After two seasons with the Spitfire, Kim signed with the Los Angeles Gladiators. After two seasons with the Gladiators, Kim retired from professional Overwatch.