| “ | You're a killer, Dean Winchester, and so am I. And if we go too long without something to track or trap or punch or gut, well, things get a bit ugly. Don't they? The Men of Letters keep me busy. They point me in a direction and bang. Off to the races. It's not a bad life. | ” |
Beings killed by Arthur Ketch.
Angels[]
Regular Angels[]
- Executioner Angel - Shot with angel-killing bullets alongside Dean Winchester.
- Prison Camp Angels - Shot with angel-killing bullets alongside Dean Winchester.
Demons[]
Regular Demons[]
- One of the Bar Attackers - Stabbed with an angel blade.
- Asmodeus' Guard - Stabbed in the abdomen with the archangel blade while rescuing Gabriel.
Monsters[]
- Countless unnamed monsters - Killed over the course of his career as an assassin for the British Men of Letters.
Vampires[]
- London Vampire - Decapitated after it was captured by the British Men of Letters.
- Dozens of unnamed vampires in America - Killed with Mary Winchester during Project V.
- Countless unnamed vampires - Killed over his career as an operative for the British Men of Letters.
Humans[]
Hunters[]
- Eileen Leahy - Killed by Arthur's hellhound on his orders. Later resurrected by Sam Winchester.
- Six unnamed hunters - Killed by Arthur's hellhound on his orders.
British Men of Letters[]
- Lady Toni Bevell - Slit her throat in the Men of Letters bunker.
- Mick Davies - Shot in the back of the head with a silenced pistol on the orders of Doctor Hess.
Psychics[]
- Magda Peterson - Shot twice with a silenced pistol on the orders of the British Men of Letters.
Witches/Magic Practitioners[]
- Three unnamed witches - Tortured and their throats slit in his search for Rowena MacLeod.
Regular Humans[]
- Agent Camp - Throat slit on the orders of the British Men of Letters.
- Pvt. Norton - Throat slit on the orders of the British Men of Letters.
- Rick Sanchez - Throat slit on the orders of the British Men of Letters.
- Six unnamed soldiers - Throats slit on the orders of the British Men of Letters.
- D. Winters - Throat slit on the orders of the British Men of Letters.
- Site 94's Prison Guard - Throat slit on the orders of the British Men of Letters.
- Countless unnamed humans - Assassinated on the orders of the British Men of Letters.