  Visualization has long been seen as a dependable and trustworthy tool for
carrying out analysis and communication tasks -- a view reinforced by the
growing interest in applying it to socially positive ends. However, despite the
benign light in which visualization is usually perceived, it carries the
potential to do harm to people, places, concepts, and things. In this paper, we
capitalize on this negative potential to serve an underrepresented (but
technologically engaged) group: villains. To achieve these ends, we introduce a
design space for this type of graphical violence, which allows us to unify
prior work on deceptive visualization with novel data-driven dastardly deeds,
such as emotional spear phishing and unsafe data physicalization. By charting
this vile charting landscape, we open new doors to collaboration with
terrifying domain experts, and hopefully, make the world just a bit worse.
