Lucifer is both a powerful archangel and a human-like character. His powers differ slightly from his comic book counterparts. He's immortal and invulnerable, unaffected by aging or diseases
Eru Ilúvatar is the single omniscient, omnipotent, and omnibenevolent creator. He exists eternally in Timeless Halls and possesses the Flame Imperishable. Created Ainur first, who came from parts of his mind. Presented his thoughts in music, leading to the Creation of Eä. Created natural laws and fixed conditions for the world
Created by God to contain his first beasts, Leviathans. Contains 30-40 million souls, each destined to prey on others. Features unique plant life, including Leviathan Blossom. Hierarchy appears fluid, with Leviathans as apex monsters
Born on May 18, 2017, Jack is Lucifer and Kelly Kline's son. First Nephilim sired by an Archangel. Initially disowned by Lucifer but later accepted his role
Novel follows epistolary nested narrative with Walton, Frankenstein, and monster. Walton's letters introduce himself as Victor Frankenstein on North Pole expedition
Fallen angel and father of Charlie Morningstar. Rules Hell and leads Seven Deadly Sins, representing Pride sin. Has white skin, blonde hair, and distinctive white and red clothing. Possesses six white wings with red feathers