A dark infernal library with shelves of black-bound books
AI-generated dramatization art (2026-09-27) — not a depiction of any real person or a historical record. The glossary as a place: an infernal library.

Glossary

Twenty terms, from the character's world and the tradition it draws on. Fiction and tradition are marked per entry.

Adversary

From Hebrew ha-satan, “the adversary” or “the accuser” — in the Hebrew Bible, a title for a prosecuting figure in the divine court (notably Job 1–2), not yet a proper name. Tradition.

Avernus

A crater lake in Italy treated by Roman writers as an entrance to the underworld; by extension, the underworld itself. Tradition (classical).

Beelzebub

A name appearing in the Gospels (e.g., Mark 3:22) for a prince of demons; in later demonology, a high-ranking fallen figure, often the character’s second-in-command. From Hebrew ba’al zevuv, “lord of the flies” (possibly a hostile pun on a Philistine deity). Tradition.

Brimstone

Sulfur — the traditional substance of infernal fire and punishment (“fire and brimstone”). Also this site’s design accent. Tradition.

Crossroads

In folk legend, the place to meet the devil at midnight and strike a bargain — a liminal space, neither here nor there. Tradition (folklore).

Demon

From Greek daimon, originally a neutral term for a spirit or guiding intelligence; in later Christian usage, a fallen angel in the adversary’s service. Tradition.

Diabolos

Greek for “slanderer” or “accuser” — the New Testament’s usual term, source of English “devil.” Tradition.

Exorcism

A rite of expelling possessing spirits, present in many traditions. In fiction, the dramatic counter-move to the bargain. Tradition.

Familiar

In early-modern witchcraft lore, a spirit attendant to a witch — and, in stories, sometimes the devil in a convenient shape. Tradition (folklore).

Gehenna

A valley outside Jerusalem associated in the Hebrew Bible with abhorrent rites; in later Jewish and Christian writing, an image of postmortem punishment. Tradition.

Grimoire

A book of supposed magical instruction — the prop in a thousand bargain stories. Tradition (folklore).

Hellmouth

In medieval art and mystery plays, the gaping jaws of a beast representing the entrance to hell. Tradition.

Iblis

The figure in the Qur’an who refuses the command to bow to Adam and becomes the archetypal tempter; al-Shaytan (“the Satan”) is the related title. Surveyed neutrally on the Mythology page. Tradition (Islamic).

Infernal

Of or relating to hell — the court’s preferred adjective for everything from architecture to etiquette. Character usage + tradition.

Lucifer

Latin for “light-bringer,” the morning star; applied to the fallen figure via the Latin Vulgate’s rendering of Isaiah 14:12. In the character’s lore, a former title it still answers to. Tradition.

Mephistopheles

The devil’s negotiator in the Faust legend (Marlowe, Goethe) — the literary ancestor of the character’s bargain scenes. See Bargains & Temptations. Tradition (literary).

Pandemonium

Milton’s name for the infernal capital in Paradise Lost (1667) — “the high capital of Satan and his peers.” Adopted as the name of the character’s capital in the Pit. Tradition (literary) + character usage.

Purgatory

In some Christian traditions, an intermediate state of purification — pointedly not part of the character’s jurisdiction, a fact it mentions with professional courtesy. Tradition.

Sabbath

In early-modern witchcraft lore, the nocturnal assembly of witches presided over by the devil — a hostile fantasy of the persecutors, treated here as folklore, not fact. Tradition (folklore).

Theomachy

“War against god” — the literary theme of the Fall as cosmic rebellion, central to Milton and to the character’s backstory. Tradition (literary).


Source notes