Lim Yo-hwan, known online as SlayerS_'BoxeR', is a former professional player of the real-time strategy computer game StarCraft. He is often referred to as The Terran Emperor, or simply The Emperor, and is widely considered to be one of the most successful players of the genre as well as a pop culture icon.

The Starleague, or the Ongamenet Starleague (OSL), was a professional South Korean StarCraft individual league run by Ongamenet. It first ran StarCraft: Brood War competitions but transitioned to StarCraft II: Wings of Liberty after that game's release. The Starleague was broadcast on Korean cable television. The league folded after the 2012 season.