Oh Il-nam, aka The Host or Player 001, is the main evil of the first season of the South Korean Netflix drama series Squid Game portrayed by O Yeong-su. We met him at the very beginning of the series when he seemed to be the usual old man in a green tracksuit participating in the Squid Game as a destitute player. Because of his brain tumor, he was just enjoying the games as a way to have fun before his death. Squid Game cursor with Player 001 aka Oh Il-Nam.