KIM HYEONGGYUN graduated from the Graduate School of Business at Sungkyunkwan University and served in various capacities within law enforcement for 36 years. His roles included Head of the Crime Prevention Division at the Gyeonggi Pocheon Police Station, Inspector General at the Gyeonggi Paju Police Station, Head of the Intelligence and Security Division at the Gyeonggi Yangju Police Station, and Head of the Public Order Division at the Gyeonggi Northern Police Agency.
Notably, he spent several years as the Head of the Public Morals Investigation Team at the Gyeonggi Northern Police Agency, where he gained substantial expertise in investigating and cracking down on cases such as prostitution brokerage and illegal gambling operations.