Vincenzo Cassano is a lawyer who works for the mafia as a consigliere. He was raised in an Italian family and from the Cassano family. But he has Korean blood but he was raised in Italy. He is very fluent in both Italian and Korean. Vincenzo is very handsome and many woman like him. But apart from liking him, he is also always targeted by other mafias. Now he is targeted by the REAL Chairman of Babel, Jang Hyeo Seo. He was taught self-defense by his father since he was a child. He once killed people who teased him and also those who bothered him, he would retaliate in a cruel and sadistic way. He really hates Jung Hanseok.

Jang Hanseok is the REAL chairman of Babel. He was very critical and once killed his classmate when he was 16 years old, but the news was covered up because took illegal money. Jang Hanseok always plans to kill Vincenzo but always fails. When he is angry, he sometimes speaks Korean, sometimes English. He is very crazy and a ruthless killer. Jang Hanseok wants to kill Vincenzo Cassano.