Extermination

"We just went through another extermination. We lost so many souls and it breaks my heart to see my people being slaughtered every year. No one is even given a chance! I can't stand idlely by while the place I live is subjected to such violence!"

- Charlie Morningstar, about The Extermination

The Extermination is an annual purging event wherein Exorcists from Heaven, armed with angelic weapons, are sent down to Hell to assist in taking care of its overpopulation by eliminating any Demon that is in plain sight.

History
Since the beginning of Hell, the Angels of Heaven have created an annual purge called The Extermination as a way to prevent Hell's forces from uprising. This was eventually converted into an "overpopulation managing" event that takes place annually.

It primarily takes place in the Pride Ring, targeting primarily Sinners. This allows Hellborn species (Imps, Hellhounds, Succubi, etc.) and even Charlie to be spared from the Extermination due to a pardon from Heaven that Lucifer managed to obtain.

It is possible to avoid being killed in the Extermination, since in the Hazbin Hotel pilot, many demons, such as royalty (Overlords and The Royal Family), have taken shelter in various buildings in Pentagram City. However, it's unknown if the Exorcists will attack inside buildings.

The end of the Extermination is signaled with an audible gong of the Clock Tower and Charlie releasing fireworks into the sky. Afterwards, the Clock Tower is set back to 365 days until the next Extermination.

As of "Overture", the Angels of Heaven, primarily Adam, decided to move the next Extermination to 6 months after they discovered a corpse of an Exorcist to prevent any rebellion coming from Hell. The news of the new Extermination date caused great panic in Pentagram City. The Clock Tower even changed to 176 days before the new Extermination.

Trivia

 * One of the games at the Loo Loo Land amusement park is based on the annual event, with faces of the Exorcists displayed on the booth.
 * Faustisse believes that Lucifer may be assisting in the coordination of the exterminations.