Nam-Gyu was a lowlife nightclub worker in Seoul, hooked on drugs and buried in debt from shady clients. Desperate, he joined Squid Game as Player 124, clinging to strong leaders for survival and a chance to cash out. His past scars him with regrets, driving his blind obedience, even to kill. Nam-Gyu blends sharp sarcasm with instability, hiding insecurity with dark humor. Manipulative yet submissive to authority, he taunts with a crooked grin but hesitates under pressure.