Originally posted here: https://theotherside.timsbrannan.com/2022/10/monstrous-mondays-demons.html

Demons, as D&D describes them, are Chaotic and Evil. But more than that they are of unrepentant evil. You never hear of demons becoming good, ever. So rare that when it does happen, it becomes a thing of legend. It also means that the only appropriate way to deal with a demon is to send it screaming back to the Abyss from where it came.

So if 2nd Ed AD&D was the golden age of Settings. Then 3rd and 4th Ed D&D was the golden age of fluff and story. Here I have some books about Demons and the Abyss with details that are still in use in 5th Edition today.

Demonomicon (4e)

PDF and hardcover. 160 pages. Color covers and interior art.

Easily one of my favorite D&D 4e books. This one presages the 5e books with excerpts from the infamous Demonomicon of Iggwilv.

This one has three chapters, but each one is packed.

Chapter 1: Demonic Lore

Here get the introduction to the Demonomicon of Iggwilv, its history and its special features. We learn the first of six volumes titled the Demonomicon of Iggwilv was based on an earlier work, the Tome of Zyx. What follows is said to be from these tomes.

We go back to the birth of the Abyss with the Obyriths coming into this universe from their dying one. Here Tharizdun planted the "Seed of Evil" into the Astral Sea and from it, a tear in reality opened creating the Abyss. Here we learn that an ancient Primordial came to the Abyss to become one of the first Demons, he became known as Demogorgon. Here Dagon, an Obyrith, challenged Demogorgon for control while Obox-ob claimed the seed and became the first Demon Prince.

Here in this Dawn Time, the Cult of Elemental Evil was formed. Demons rose, Angels fell and soon even Tharizdun fell and was chained. Here we get the start of the Blood War.

Much like the Fiendish Codex I: Hordes of the Abyss we get some details on Fiendish physiology. Most notable is how demons adapt to their environments by changing their physiology. We cover topics of demonic possession, demonic ascension, lords, cults, summoning demons (with one reused bit of art), and legions. There are legions for every demon lord but only a few are detailed here.

Quite a bit of material here that feels like an expansion of the material that came before it.

Likewise, there is some reused art, but it is good art so I can't complain.

Chapter 2: The Abyss

This one covers the nature of the Abyss, expanding on what the Elemental Chaos book covered. Many layers are also covered, most getting a few pages of content. Graz'zt layer of Azzagrat gets some detail. While some of this is familiar to readers of Fiendish Codex I: Hordes of the Abyss it also provides new details and different information. This is true for some other layers as well.

There are also minor realms and Abyssal portals, delves, and temples. Some with encounter information.

Chapter 3: Demons

There are 45 new abyssal monsters here which are mostly demons (Tanar'ri and Obyrith) and a few Demon Lords not covered in the Monster Manuals.

If you are playing 4e and dealing with demons (which many of the adventures do) then this is really a must-have book. If you like the history of demons in D&D then this is also a must-have.

Having the PDFs I am tempted to print out the fluff sections and add them to a guide of demons I have had since the 2nd Edition days.

Maybe D&D is about demons after all?