Demon Last Name Generator

Demons in myth almost never had surnames, which is exactly why writers and game designers invent them: a last name turns a single fiend into a family, a house, or a dynasty with debts and rivalries. There are four reliable ways to build one, and this list includes all of them so you can match your setting.

The first is to borrow a Goetic demon's name as a family name. Ars Goetia names such as Marchosias, Naberius, Dantalion, and Decarabia already sound like aristocratic surnames, so 'Vesper Marchosias' or 'House Halphas' reads instantly as infernal nobility. Dante's Malebranche (Malacoda, Barbariccia, Rubicante) work the same way with an Italian flavour. The second is Latin: adjectives like Atrox, Vorax, Maledictus, and Perditus were used in exorcism texts and Renaissance demonology and make crisp, formal surnames. The third borrows the geography of Hell (Avernus, Gehenna, Phlegethon, Malbolge, Cania), which is common in D&D-style infernal houses. The fourth is the invented harsh-consonant surname (Vorthax, Kzarrath, Zeth-Kariss), often hyphenated to suggest a lineage or a pact.

Gothic compound surnames such as Ashgrave, Blightmoor, or Blackcandle are the softest option and suit half-demons, tieflings, and cambions living among mortals. Whatever style you choose, keep it consistent within one family so the bloodline sounds real.