Thralhavoc is a demon lord

Demon lord (Dungeons & Dragons)

In the Dungeons & Dragons fantasy role-playing game, demon lords are demons who have gained great power and established a position of preeminence among demonkind. Each demon lord has a unique appearance and set of abilities. Most control at least one layer of the Abyss...

, in the Dungeons & Dragons

Dungeons & Dragons

Dungeons & Dragons is a fantasy role-playing game originally designed by Gary Gygax and Dave Arneson, and first published in 1974 by Tactical Studies Rules, Inc. . The game has been published by Wizards of the Coast since 1997...

roleplaying game.

Publication history

Thralhavoc was first mentioned in Hellbound: The Blood War (1996).

Thralhavoc received further details in third edition in Fiendish Codex I: Hordes of the Abyss

Fiendish Codex I: Hordes of the Abyss

Fiendish Codex I: Hordes of the Abyss is an optional supplemental source book for the 3.5 edition of the Dungeons & Dragons roleplaying game.-Chapter 1: Demonic Lore:...

(2006).

Description

Thralhavoc, the Shadowmaster, is an Abyssal lord whose portfolio includes undead shadows

Shadow (Dungeons & Dragons)

In the Dungeons & Dragons fantasy role-playing game, the shadow is an undead creature.-Publication history:The shadow was introduced to the game in its first supplement, Greyhawk ....

 and subterfuge.

Realm

Thralhavoc once ruled the 348th layer of the Abyss, but abandoned it to focus on more important tracts of land. Now even the name of the Abyssal layer has faded - the Guvners call it Indifference.

Additional reading

• McComb, Colin
  Colin McComb
  Colin McComb is an American writer and game designer born in Evanston, Illinois. He is married to musician Robin Moulder. They currently live in Grosse Pointe Park, Michigan, with their two children...
  
  . McComb, Colin. On Hallowed Ground
  On Hallowed Ground
  On Hallowed Ground is an accessory book for the Advanced Dungeons & Dragons fantasy role-playing game, for the Planescape campaign setting.-Contents:This book contains information about deities' planar domains from 20 separate pantheons...
  
  (TSR
  TSR, Inc.
  Blume and Gygax, the remaining owners, incorporated a new company called TSR Hobbies, Inc., with Blume and his father, Melvin Blume, owning the larger share. The former assets of the partnership were transferred to TSR Hobbies, Inc....
  
  , 1996).