The Death Busters (デスバスターズ, Desu Basutāzu?) are a group of antagonists in the Sailor Moon metaseries. They are the primary villains of the third story arc, called Infinity in the manga and S in the anime. In the English dub, they are officially called the Bureau of Bad Behavior, but sometimes referred to as "The Heart Snatchers."
The goal of the Death Busters is the resurrection of Mistress 9 in order to bring the alien creature Pharaoh 90 to Earth, which would wipe out all life in an event known as the Silence. The group is led by Professor Tomoe, a mad scientist, assisted by a woman named Kaolinite. They employ the Witches 5 to help carry out their schemes.
In the anime, creatures called Daimons serve as monsters-of-the-day. These life forms are bred in special pods that release monsters from the most mundane of objects, and are employed by Kaolinite and the Witches 5. They hunt down Pure Heart Crystals, which may contain the mystical Talismans, or may simply be used to give power to Mistress 9.