YMMV / The Real Ghostbusters S 5 E 13 The Halloween Door

• Magnificent Bastard: Boogaloo is a fun-loving demon lord. 2000 years ago, the world was infested with demons. The Druids struck a deal with the demons, the worst of them would go back to the spirit world and humanity would have one day to remember them, Halloween. Wanting to break the Halloween deal, Boogaloo sends his minion Fairweather to Earth. Fairweather is disguised as a human and helps an anti-Halloween extremist, Dr. Crowley, build an anti-Halloween machine. Crowley activates the machine, wiping out all traces of Halloween, and breaking the Halloween deal. Boogaloo and his minions appear on Earth and Boogaloo has his minions destroy Crowley's machine and free all the ghosts from the Containment Unit. Boogaloo is one of the few villains who almost achieved complete victory.