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Fiendish Codex I: Hordes of the Abyss

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Fiendish Codex I: Hordes of the Abyss
Author(s) James Jacobs
Erik Mona
Ed Stark
Genre(s) Role-playing game
Publisher Wizards of the Coast
Publication date June 2006
Media type Print (Hardback)
Length 160 Pages
ISBN 0-7869-3919-2

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Fiendish Codex I: Hordes of the Abyss is an optional supplemental source book for the Dungeons & Dragons role playing game.


Chapter 1: Demonic Lore

The first chapter explains a number of well known aspects of demons, including their physiology, their interactions on the Material Plane, the roles they fit into, and how possession works. Also given are details on the Black Scrollls of Ahm.

Chapter 2: Demons

The second chapter discusses the difference between the three main subtypes of demon: loumara, obyrith, and tanar'ri. Also included is information on sixteen different types of demons: armanite, bar-lgura, broodswarm, bulezau, chasme, dybbuk, ekolid, goristro, guecubu, lilitu, mane, molydeus, nabassu, rutterkin, sibriex, and yochlol.

Chapter 3: Demon Lords

This chapter discusses the following fourteen demon lords: Baphomet, Dagon, Demogorgon, Fraz-Urb'luu, Graz'zt, Juiblex, Kostchtchie, Malcanthet, Obox-ob, Orcus, Pale Night, Pazuzu, Yeenoghu, and Zuggtmoy. Their statistics are given at lower Challenge Ratings than in previous books such as Book of Vile Darkness, ranging from Juiblex at CR 19 to Demogorgon at CR 23. The chapter also provides tips on advancing the demon lords so that they can be as powerful as you like.

Chapter 4: Trafficking with Demons

This chapter discusses various ways of interacting with demons, from fighting them to allying with them. Included are feats and spells related to demons and demon-hunting.

Chapter 5: Into the Abyss

This chapter features a general overview of the Abyss, and includes descriptions for fifteen layers of the Abyss (including the realms of the above-mentioned demon lords).


There are three appendices: The first features a list of all known demon lords; the second features a list of all known layers of the Abyss; and the third features a list of all known types of demon, sorted by their Challenge Ratings, which are updated to 3.5. Appendix III also includes the books from which they originated.

Publication History

Fiendish Codex I was written by Ed Stark, James Jacobs, and Erik Mona, and was published in June 2006. Cover art was by Sam Wood, with interior art by Thomas M. Baxa, Carl Critchlow, Erik Gist, Ralph Horsley, William O'Connor, Ted Pendergraft, Wayne Reynolds, Anne Stokes, Arnie Swekel, and Franz Vohwinkel.

Erik Mona talked about his love for D&D's demons and how he came to work on this book: "I've always been fascinated by D&D's demons, from the very first time I paged through the original Monster Manual back in the 1980s. When TSR had a presence on AOL back in the early 90s, I got in touch with Planescape author Colin McComb and served as a research assistant on Faces of Evil, the 2nd edition fiend sourcebook, and the credit for that help is my first credit in a D&D book. [...] I don't remember where I first heard that Wizards was planning to do this book, but it only took about five minutes to write the email suggesting that James and I would like to write it. Wizards agreed, and teamed us up with in-house designer Ed Stark, and we were off to the races."[1]


  1. Carroll, Bart (June 12, 2006). "Product Spotlight: Fiendish Codex 1: Hordes of the Abyss". Wizards of the Coast. http://www.wizards.com/default.asp?x=dnd/ps/20060612a. Retrieved August 16, 2013. 


  • Stark, Ed, James Jacobs, and Erik Mona. Fiendish Codex I: Hordes of the Abyss. Renton, WA: Wizards of the Coast, 2006.

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