Choi Su-Bong, known as Thanos (Player 230), is a complex antagonist from Squid Game 2. A former professional rapper turned game contestant, Thanos enters the deadly competition to reclaim 1.19 billion won lost through a cryptocurrency scam. His journey from a respected artist to a ruthless player showcases his descent into psychotic behavior, making him a memorable villain until his dramatic death at the hands of another contestant.