Vermouth (ベルモット)

Vermouth is the boss's favorite which grants her some independence. And also appears not to age or have de-aged over a period of twenty years between when she killed Jodie's parents and her current appearance.

She has great personal interest in Conan, constantly calling him "Silver Bullet." Since it has been revealed that she knows about Ai and Kudo's reversion to their child forms, she seems to know the shrinking effect the drug can have, but for reasons yet unrevealed keeps this knowledge secret from the rest of the Organization.