Exorcists

The Exorcists are Angels that are annually sent from Heaven to kill a portion of Hell's population due to its overpopulation in an event that is call "The Extermination".

They are the overarching antagonists in Hazbin Hotel.

Appearance
Exorcists appear to have a fairly uniform appearance, each being black, white and gray humanoids with the only color being on their faces.

They possess two large goat-like horns on their head, above which sits a halo with a central gem and three smaller crystals on both sides. Along with two large wings on their backs, allowing them flight. Their face is covered with an LED screen mask capable of various expressions.

Exorcists appear to be mostly armed with angelic weapons styled in spears similar in design to those of a harpoon. Illustrations of the Exorcists in the pilot also depict them with swords and possibly arrows, but this has yet to be shown outside the illustration. According to Vivziepop, they possess a variety of weapons such as guns, knives, swords, etc.

Personality
While little is known of the Exorcists, they appear cold and murderous. They are often depicted with a large grin, although their masks are capable of other expressions, as seen in the official trailer.

During an Extermination, they appear to primarily target demons who are outside, it is unclear if they will attempt to enter buildings to locate targets. They do not seem to hold much regard for their weapons and will often leave them in their victims, which are then gathered by Hell's denizens following the extermination.

According to Vivziepop, Exorcists are very bloodthirsty and love violent things.

Trivia

 * According to Vivziepop, only the Exorcists can really and truly kill the citizens of Hell using their special tools. While non-Exorcists can kill other sinners they must do so with scavenged Exorcist weaponry.
 * When asked why there is a reason that Exorcists and presumably other Angels are robotic, Vivziepop said that she can't say much, but she did confirm that they're not exactly robots. However, they do wear LED screen masks on their faces.