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 idly 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 cull the overpopulation by eliminating as many Sinners as possible.

Description
The extermination takes place in the Pride Ring, targeting only Sinners, while Hellborn species (and Charlie) are spared from the Extermination due to a pardon from Heaven that Lucifer managed to obtain. This means that the other six Rings of Hell are left untouched from Exorcists, since Sinners cannot traverse to the other Rings and are confined to the Pride Ring.

It is possible to avoid being killed in the Extermination, since in the Hazbin Hotel pilot, many demons, such as Overlords and demonic royalty, took shelter in various buildings in Pentagram City. However, it is unknown if the Exorcists will attack inside buildings.

The end of the Extermination is signaled with an audible gong of the Clock Tower. Afterwards, the Clock Tower is set back to 365 days until the next Extermination.

In "Welcome to Heaven", it is revealed the Extermination itself is a Seraphim's rule that no angel except the Exorcists must know about it.

History
When the population and power of Hell grew, the Angels of Heaven 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.

In the Hazbin Hotel pilot, Charlie released fireworks into the sky after the extermination ended. Whether she does this annually or this one time is unknown.

In "Overture", Adam decided to move the next Extermination to be in 6 months to prevent any rebellion or uprising from Hell after they discover that an Exorcist was killed. The Clock Tower changed to 176 days to reflect the new Extermination date and the news of the new date caused great panic in Pentagram City, and possibly in all of Pride itself.

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.