Sonoko Suzuki

Sonoko Suzuki (Serena Sebastian in the english translation) is Ran Mouri's best friend since childhood, aside from Shinichi Kudo. Her family is very wealthy, but she and Ran work hard to make sure that doesn't come between them. She is slightly boy-crazy, but is a very good friend. She has a crush on the Kaito Kid, and is in a long-distance relationship with Makoto Kyogoku. She often tries to get Ran to date someone else, instead of simply waiting for Shinichi to come back. This always fails.

When Kogoro is not available to be Conan's puppet, he sometimes uses Sonoko instead. She, like Kogoro, chooses to take credit for this, calling herself the 'Deduction Queen'.