Kim Bo-sung (김보성), born Heo Seok (허석), June 27, 1966, is a South Korean actor and television personality. He began as a figure in action films during the 1990s and, over time, reinvented himself as a television host and media personality thanks to his motto of "loyalty" (uirí, meaning "loyalty"). His career spans cinema, television, advertising, and social activism, making him a highly recognizable face in South Korean popular culture.