- Complete Monster: The Juggernaut - according to his backstory he was a serial killer who would pick up female hitchhikers on the road and drive them back to his junkyard, then tear them apart with his bare hands and feed them to his dogs.
- The Jackal - when he was alive he had an insatiable lust for women, rape, and murdering prostitutes.
- Cyrus Kritikos who has orchestrated the abduction of Kathy and Bobby so that Arthur will become the 13th ghost to trigger The Machine's activation. He also has no hesitation to put the children in danger knowing it's the only reason why Arthur will sacrifice himself.
- Creepy Sexy: The Angry Princess.
- Jerkass Woobie: The Torn Prince and the Pilgrimess, who became jerks after death for obvious reasons and the Angry Princess and the Bound Woman, who were tragic and bitchy victims.
- The Woobie: Arthur and his family, especially his poor wife, the Withered Lover. Also, the Dire Mother.
- Also Dennis, his powers make his life a living hell.
- Woobie, Destroyer of Worlds: The Great Child and the Hammer.