Killed by the Knights of Hell

Beings killed by the Knights of Hell.

Knights of Hell

 * All of the Knights of Hell except Abaddon - Slaughtered by Cain with the First Blade in response to the Kidnapping of Colette Mullen.

Regular Demons

 * Cecily - Stabbed by Abaddon with an angel blade in response to Cecily giving Crowley information.
 * Abaddon's Demon Guards - Smote by Cain while rescuing his wife.
 * Abaddon's Demon Army - Smote by Cain during an attack at his house.

Men of Letters

 * Ted Bowen and the Men of Letters Elders - Brutally slaughtered by Abaddon on the night of August 12, 1958.
 * Larry Ganem - Throat slit by Abaddon while possessing his wife in 2013.
 * Henry Winchester - Fatally impaled in the abdomen by Abaddon.
 * Entire American chapter - Slaughtered by Abaddon on August 12, 1958.

Hunters

 * Pete - Tortured to death by Abaddon.

Regular Humans

 * Abel - The first murder. Stabbed by Cain with the First Blade as part of his deal with Lucifer to ensure Abel's soul ended up in Heaven.
 * Comic book store clerk - Killed by Abaddon for her clothes.
 * Motel clerk - Throat slit by Abaddon with her nails.
 * Dozens of Cain's descendants - Slaughtered by Cain out of a belief that his bloodline is tainted by the Mark of Cain.
 * Tommy Tolliver - Serial killer stabbed through the chest by Cain with a knife as part of his slaughter.
 * Gavin's friend - Telekinetically impaled upon a metal hook in 1723.
 * Larry Ganem's wife - Killed by Abaddon alongside her husband.
 * Unnamed man - Throat slit by Abaddon for a Goblet of Blood call with Crowley.
 * Colette Mullen - Several bones snapped by Abaddon while possessing Colette, accidentally fatally wounded by Cain with the First Blade.
 * Max Thompson - Ripped apart by Abaddon on August 5, 1958 after Hell learned that he had cured a demon.
 * Thousands of unnamed people - Slaughtered by the Knights of Hell over the centuries they were active, particularly by Cain.