Gin (ジン Jin) - Black Organization

Gin (ジン Jin) is a member of the Black Organization and a primary antagonist of the series. He is the organization member who gave Shinichi Kudo the experimental poison APTX 4869 which turned him into Conan Edogawa.[2] He is frequently paired on missions with Vodka. In the English manga, he was first introduced as Melkior, but later was reverted to Gin. This is likely due to the fact that Conan is often reminded of the Black Organization by references to alcohol.