Delaphene is a Greater Demon who works with her sibling Christoph — deceptive, strategic, and proof that demons can be more dangerous working together.

Christoph is a Greater Demon who works in terrifying coordination with his sibling Delaphene — intelligent, strategic, and harder to stop than most.

Surgat rules his own section of Hell and commands thousands of demon armies — the ultimate antagonist at the center of the World on Fire trilogy.

Belphegor is an ancient Demon Lord pursuing something hidden in Ravens Peak — a near-unstoppable force moving through human vessels toward an unknown goal.

Nida hunts Hunters — sadistic, calculating, and possibly enhanced beyond human limits. She's organized, methodical, and still at large.

Aram is a high-ranking Council member who made dangerous deals he believed would protect his son — and set off consequences he couldn't contain.

Frieda Gotlieb commands Hunter operations for the Council of Chaldea — the woman who freed Arthur from prison and refuses to let the organization fall.

Abigail is Arthur's adopted daughter — a deadly, precise hunter who carries questions about herself that the series spends three books slowly answering.

Haatim is a theology graduate who stumbled into the world of demon hunting — and discovered he was considerably harder to break than he expected.