Ex-planet Pluto is named for the God of the Underworld, and its three previously known moons have gloomy names:
Charon, the ferryman of the dead
Nix, goddess of night and Charon's mother
Hydra, a many-headed monster that guarded an entrance to the underworld
So what to name the newly discovered fourth moon? Something really dark and gloomy and a little frightening?
I suggest "John Boehner."