Mine is Dr. Facilier
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Is my age showing?
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Facilier is one of the scariest Disney villains. While many Disney villains can easily be called evil, most of them are blustery and a little bumbling. Dr. Facilier is cold and calculating, very rarely letting his anger get the better of him as is most villains' folly. Top it off with his frequent communing with all sorts of dark magic.
While most heroes, and for that matter, villains in Disney movies are given sidekick characters that are basically there to sell stuffed animals. Dr. Facilier isn't having any of that. His sidekick is his own sentient shadow, which silently acts as a character of its own, fulfilling Facilier's will in some very cool, and very creepy, manners.